TA375FN/ TA375FNG TOSHIBA Bipolar Linear Integrated Circuit Silicon Monolithic TA375FN, TA375FNG AM/FM RF/IF Detector IC for Low Power Wireless System The TA375FN is an RF/IF detector IC for AM/FM radio. The IC incorporates an RF amp, -level comparator, and local 8 circuit Features RF frequency: 4 to 45 MHz (multiplication is used) to 45 MHz (multiplication is not used) IF frequency:.7 MHz Operating voltage range:.4 to 5.5 V Current dissipation: 5.8 ma (FM)/5.4 ma (AM) (except current at oscillator circuit) Current dissipation at BS: µa (typ.) Small package: 4-pin SSOP (.65 mm pitch) Weight:.9 g (typ.) Block Diagram SAW 4 LPF 3 LPF 9 8 7 6 5 4 AF RSSI REF AM/FM MIX GND RF- CHARGE AM/FM RSSI Comparator RF- DEC 3 RF- 8 Detector OSC- V CC - Lo LoBS MIX V CC IF- IF- DEC GND 3 4 5 6 7 8 9 BS QUAD V CC DATA BPF 3--3
TA375FN/ TA375FNG Pin Description (the values of resistor and capacitor in the internal equivalent circuit are typical.) Pin No. Pin Name Function Internal Equivalent Circuit OSC Local oscillator input pin. 5 kω pf 5 kω 5 kω 5 kω 5 kω V CC-Lo Local power supply pin 3 LOBS Lo switch pin. H: 8 circuit pin. L: Through pass 3 7 kω 4 MIX Mixer output pin. The output impedance of the pin is typically 33 Ω. 4 45 Ω 5 V CC Power supply pin. 6 IF IF amp input pin. 3 kω 7 IF DEC IF amp input pin. Used as a bias coupling pin. 7 Ω 7 Ω 6 7 8 GND GND pin. 9 BS Battery saving pin. 9 4 kω 3--3
TA375FN/ TA375FNG Pin No. Pin Name Function Internal Equivalent Circuit QUAD Phase-shift input terminal for the FSK Demodulator. Connect to the discriminator or LC. kω pf 5 Ω 8 kω 8 kω V CC Power supply pin. DATA FM/AM waveform shaping output pin. Open collector output. Connect a pull-up resistor. kω 3 RF RF signal input pin. 6 kω 4 RF DEC Emitter pin for internal transistor. 3 3 kω 6 RF RF amp output pin. 4 5 CHARGE Control terminal for quick charge circuit. To use the quick charge circuit, attach a capacitor. 5 5 Ω kω 5 kω 7 GND GND pin. 8 MIX Mixer input pin. 8.4 kω 5 Ω 9 AM/FM Changeover switch for ASK/FSK. Hi: AM Lo: FM 9 3 kω 3 3--3
TA375FN/ TA375FNG Pin No. Pin Name Function Internal Equivalent Circuit REF Threshold input terminal for -level FM/AM comparator. 4 3 5 Ω 5.5 kω kω kω COMP 33 kω DATA RSSI RSSI output pin. 3 kω AF Output terminal for FM demodulator. 3 kω 3 LPF FM/AM LPF input pin. 3 5.5 kω 4 5 Ω 4 LPF FM/AM LPF output pin. Equivalent circuits are given to help understand design of the external circuits to be connected. They do not accurately represent the internal circuits. 4 3--3
TA375FN/ TA375FNG Functions. Waveform Shaper Circuit (comparator) The output data (pin ) are inverted.. RSSI Function DC potential corresponding to the input level of IF (pin 6) is output to RSSI (pin ). Output to RSSI (pin ) is converted to a voltage by the internal resistance. Thus, connecting external resistance R to pin varies the gradient of the RSSI output as shown below. Note that due to the displacement of temperature coefficients between external resistor R and the internal IC resistor IC resistor, the temperature characteristic of the RSSI output may change. Also, the maximum RSSI value should be V CC V or less, because AM doesn t correct movement Filter AMP when voltage of RSSI high. 3 kω R After R is connected IF input level Figure Figure 3. V CC Pin and GND Pin Use the same voltage supply for V CC Lo ( pin) and V CC (5 pin) and V CC ( pin) (or connect them). Also, use the same voltage supply source for GND (7 pin) and GND (8 pin) (or connect them). 4. Local Oscillator Circuit The local oscillator circuit is external-input-only. The device incorporates no transistor for oscillation. Input to pin at a level from 95 to 5dBµV. Adjust the values of constants C7 and C8 shown in the application circuit diagram so that the input level will become approximately dbµv. By switching the Lo switch (LOBS), the frequency set by the external circuit can be used as-is without using the 8 circuit. Lo Switch (LOBS) H L Local oscillation status 8 circuit in operation 8 circuit halted/through pass 5. RF Amp Current Adjustment The RF amp current dissipation can be regulated by varying resistor R as shown in the figure below. When R = kω, the current dissipation is approximately 6 µa. R 4 RF DEC Figure 3 5 3--3
6. Battery-Saving (BS) Function and Lo Switch LOBS Function TA375FN/ TA375FNG The IC incorporates a battery-saving function and a Lo switch function. These function offer the following selection. FM Mode (FM/AM pin: L) BS Pin/LOBS Pin Circuit Status in the IC IC Current Dissipation (at no signal) H/H Circuits in operation: 8 circuit Mixer RF amp Comparator IF amp Detector circuit RSSI Comparator capacitor charger circuit 5.8 ma (typ.) H/L 8 circuit only halted, Frequency set by External circuit can be used as-is. 3.5 ma (typ.) L/H 8 circuit only in operation.6 ma (typ.) L/L All circuits ma (typ.) AM Mode (FM/AM pin: H) BS Pin/LOBS Pin Circuit Status in the IC IC Current Dissipation (at no signal) H/H Circuits in operation: 8 circuit Mixer RF amp Comparator IF amp RSSI Comparator capacitor charger circuit 5.4 ma (typ.) H/L 8 circuit only halted, Frequency set by External circuit can be used as-is. 3. ma (typ.) L/H 8 circuit only in operation.6 ma (typ.) L/L All circuits ma (typ.) 6 3--3
7. RF Amp Gain TA375FN/ TA375FNG RF amp gain (G v (RF) ) is a reference value calculated as follows. Measure G RF in the following figure. G v (RF) is calculated as follows: G v (RF) = G RF G v (MIX). µf 7 nh pf kω 6 pf pf 6 pf 8 6 3 33 nh SG 5dBµV 4 6 G RF. µf Figure 4 8. IF Amp Gain The intended value is 75dB. 9. Waveform-Shaping Output Duty Cycle The specified range of electrical characteristics is only available for single-tone.. Local Frequency Range (after multiplying frequency by 8) When the multiplier circuit is used, the local frequency will be in the range 5.7 MHz to 439.3 MHz.. Treatment of FM Terminal when Using AM When using AM, it is not necessary to treat the QUAD pin (pin ). Leave it open or connected to an FM external circuit. To use the bit rate filter, connect the RSSI pin (pin ) to the bit rate filter through a resistor. The AF- pin (pin ) should be left open. R9 R8 C8 C7 AF RSSI Bit rate filter for FM R9 C8 36 kω AF RSSI Bit rate filter for AM Figure 5 Figure 6 Using AM causes current to flow through the AM/FM pin (pin 9). Ground the AM/FM pin (pin 9) or connect it to the BS pin (pin 9). 7 3--3
. Control Terminal for Quick Charge Circuit (CHARGE) TA375FN/ TA375FNG CHARGE (5 pin) is control terminal for quick charge circuit. REF ( pin) control terminal for quick charge a given period by time constant of internal resistance and outside capacitance. Enabling the CHARGE pin requires an external capacitor. In normal operation, connect a capacitor having the same capacitance as that of the capacitor connected to the REF pin (pin ). If the connected external capacitor (C) is. µf, the quick charge time is 7 ms (typically). 3. Bit Rate Filter for FM The current FM bit rate filter is used as a tertiary filter. If the filter is to be used at a rate other than bps, please change the filter constant. Quadratic Filter (NRZ) R R9 R8 C C9 C8 bps 68 kω 68 kω 68 kω. µf 56 pf 33 pf 4 bps 68 kω 68 kω 68 kω 47 pf 7 pf 5 pf 48 bps 68 kω 68 kω 68 kω pf 5 pf 68 pf 4. Bit Rate Filter for AM The current AM bit rate filter is used as a quadratic filter. If the filter is to be used at a rate other than bps, please change the filter constant. Quadratic Filter (NRZ) (the bit rate filter time constant takes into account the internal resistance RSSI (3 kω)) R R C C9 bps 36 kω 68 kω 47 pf 5 pf 4 bps 36 kω 68 kω pf 68 pf 48 bps 36 kω 68 kω pf 39 pf When the filter constants shown below are used, it is not necessary to set the R constant value. R R C C9 bps 3 kω 68 pf pf 4 bps 3 kω 33 pf 5 pf 48 bps 3 kω 8 pf 8 pf In addition, the current AM bit rate filter can be used as a tertiary filter. If the filter is to be used at a rate other than bps, please change the filter constant. 8 3--3
TA375FN/ TA375FNG Quadratic Filter (NRZ) (the bit rate filter time constant takes into account the internal resistance RSSI (3 kω)) R R9 R C C9 C8 bps 36 kω 68 kω 68 kω. µf 56 pf 33 pf 4 bps 36 kω 68 kω 68 kω 47 pf 7 pf 5 pf 48 bps 36 kω 68 kω 68 kω pf 5 pf 68 pf When the filter constants shown below are used, it is not necessary to set the R constant value. R R9 R C C9 C8 bps 3 kω 3 kω.33 µf pf 8 pf 4 bps 3 kω 3 kω.5 µf pf 39 pf 48 bps 3 kω 3 kω 68 pf 47 pf 8 pf For the cutoff frequency of the bit rate filter, specify a sufficiently high value for the bit rate to be used. Specifying a relatively high cutoff frequency for the bit rate filter enables a low capacitor to be used at the REF pin, therefore making the pulse rise quickly. When AM is used, the internal resistance of RSSI is used. So, take the output resistance into account when specifying a cutoff frequency. 9 3--3
TA375FN/ TA375FNG Cautions for Designing Circuit Board Patterns Observe the following cautions when designing circuit patterns for this product. Local Oscillator Circuit (pin ) Isolate the local oscillator circuit block sufficiently from the RF amp block. Isolate the local oscillator circuit block securely so that its output will not get in the IF input, IF filter, or mixer input. Do not place the local oscillator circuit block too close to the ceramic filter. Subdivide the ground pattern for the local oscillator circuit block, and connect the subdivisions with thin lines. Mixer Output Block (pin 4) to IF Input Block (pin 6) Isolate the input and output patterns of the IF filter securely from each other. Demodulator Circuit Block (pin ) Isolate the demodulator circuit block sufficiently from the IF input block (pin 6). Do not place the LC too close to the IC device. Data Output Block (pin ) Isolate the data output block sufficiently from the IF input block (pin 6). Isolate the output pattern of the data output block from other circuits as much as possible, so any noise from a stage subsequent to the output will not affect them. RF Amp Circuit Block () Preventing RF amp oscillation Do not place the patterns connected to pins 3 and 4 too close to each other. Isolate the patterns connected to the input block (pin 3) and output block (pin 6) from each other. Make the RF input signal line relatively thin. Place a relatively wide ground pattern between the RF- pin (pin 3) and RF-DEC pin (pin 4). Connect the RF- pin (pin 6) and MIX- pin (pin 8) with the shortest possible pattern. () Attaining a sufficient gain To attain a sufficient RF amp gain, select an optimum value for the input matching circuit block (pin 3) according to the board circuit pattern. IC Mounting Area Provide a ground pattern under the IC device, and prepare relatively many through holes. 3--3
TA375FN/ TA375FNG Maximum Ratings (unless otherwise specified, Ta = 5 C. the voltage is with reference to the ground level.) Characteristics Symbol Rating Unit Supply voltage V CC 6 V Power dissipation P D 78 mw Operating temperature range T opr 4 to 85 C Storage temperature range T stg 55 to 5 C The maximum ratings must not be exceeded at any time. Do not operate the device under conditions outside the above ratings. Operable Range (unless otherwise specified, Ta = 5 C. the voltage is with reference to the ground level.) Characteristics Symbol Test Circuit Test Condition Min Typ. Max Unit Operating voltage range V CC.4 5. 5.5 V RF operating frequency f RF RF operating frequency f RF Local frequency f LO When frequency multiplication is used When frequency multiplication is not used When frequency multiplication is used ( 8) 4 45 MHz 45 MHz 5.7 439.3 MHz Operating ranges indicate the conditions for which the device is intended to be functional even with the electrical changes. Electrical Characteristics (unless otherwise specified: Ta = 5 C, V CC = 5 V, fin (RF) = fin (MIX) = 34.9 MHz, fin (IF) =.7 MHz) Characteristics Symbol Test Circuit Test Condition Min Typ. Max Unit Current dissipation at battery saving I cco 3 BS = L, LOBS = L 5 µa RF amp gain G v (RF) (5) The input and output impedances are 5 Ω. 9. 6. 3. db Mixer conversion gain G v (MIX) 7 5 db RSSI output voltage V RSSI V in (IF) = 35dBµVEMF.5.5.45 V RSSI output voltage V RSSI V in (IF) = 65dBµVEMF.8.5.3 V RSSI output voltage 3 V RSSI3 V in (IF) = dbµvemf.6.95.3 V RSSI output resistance R RSSI 3 38 kω Comparator input resistance R COMP 75 5 kω Data output voltage (L level) V DATAL (3) I DATAL = 5 µa.4 V Data output leakage current (H level) I DATAH (4) µa BS pin H-level input voltage V BSH. 5.5 V BS pin L-level input voltage V BSL. V LOBS pin H-level input voltage V LOBSH. 5.5 V LOBS pin L-level input voltage V LOBSL. V 3--3
TA375FN/ TA375FNG FM Mode (Ta = 5 C, V CC = 5. V, fin (RF) = fin (MIX) = 34.9 MHz, fin (IF) =.7 MHz, dev = ± khz, fmod = 6 Hz (single wave)) Characteristics Quiescent current consumption (for FM) Symbol Test Circuit I ccqfm () Test Condition Min Typ. Max Unit BS/LOBS/FMAM = H/H/L Fin (Lo) = 4.7 MHz 4.3 5.8 7.3 ma Demodulated output level Vod V in (IF) = 8dBµVEMF 3 4 55 mvrms Waveform shaping duty ratio DRfm () V in (IF) = 8dBµVEMF For single tone 45 5 55 % AM Mode (Ta = 5 C, V CC = 5. V, fin (RF) = fin (MIX) = 34.9 MHz, fin (IF) =.7 MHz, AM = 9%, fmod = 6 Hz (square wave)) Characteristics Quiescent current consumption (for AM) Symbol Test Circuit I ccqam () Test Condition Min Typ. Max Unit BS/LOBS/FMAM = H/H/H Fin (Lo) = 4.7 MHz 4. 5.4 6.8 ma Reference characteristic data DRam () V in (IF) = 8dBµVEMF For single tone 45 5 55 % Reference Characteristic Data * Characteristics Symbol Test Circuit Test Condition Typ. Unit IF amp input resistance R (IF) 33 Ω RF amp gain G v (RF) 3 db RF amp input resistance R (RF). kω RF amp input capacitance C (RF). pf RF amp output capacitance C (RF). pf Mixer input resistance R (MIX).5 kω Mixer input capacitance C (MIX).5 pf Mixer output resistance R (MIX) 33 Ω Mixer intercept point IP3 96 dbµv *: These characteristic data values are listed just for reference purposes. They are not guaranteed values. Reference Characteristic Data (FM mode) * Characteristics Symbol Test Circuit Test Condition Typ. Unit Limiting sensitivity Vi (LIM) IF input 35 Signal-to-noise ratio S/N (8) V in (IF) = 4dBµVEMF 4 db Signal-to-noise ratio S/N (8) V in (IF) = 8dBµVEMF 57 db *: These characteristic data values are listed just for reference purposes. They are not guaranteed values. dbµv EMF 3--3
TA375FN/ TA375FNG Typical Test Circuit (FSK) V CC C. µf C9 56 pf R 68 kω R9 R8 68 kω C8 68 kω 33 pf 4 3 LPF LPF pf C7 C5. µf V CC pf C3 kω L4 7nH C 6 pf. µf 9 8 7 6 5 4 AF RSSI REF AM/FM MIX GND RF CHARGE RSSI AM/FM Comparator R6 C > = C5 C. µf pf C kω R5 C9 RF DEC 3 pf RF 8 Detector OSC MIX IF IF LOBS V CC DEC GND BS QUAD V CC DATA 3 4 5 6 7 8 9 V CC C. µf V CC C3 V CC BPF. µf. µf C6. µf V CC Detector C4 R3 4.7 kω. µf C7 V CC. µf R4 kω V CC DATA µf Test Circuit () V RSSI () D R SG. µf 6 Ω 6 pf V SG. µf 5 Ω 6 kω V CC (3) V DATAL (4) I DATAH.5 V V R = kω V CC.5 V V V V CC kω 3. V V 3 V 3. V V 3 I = V/ 3 3 3--3
TA375FN/ TA375FNG (5) G v (RF) (6) G v (MIX) SG pf 3 6 5 Ω pf 5 kω SG pf 3 4 5 Ω. µf 6 (7) G v (MIX) vs V LO (8) S/N, SG SG. µf 4 5 Ω pf 8 6 5 Ω. µf SG SG. µf 4 5 Ω pf 3 5 Ω Buff Test Circuit I ccqfm I ccqam 5 Ω SG 5 Ω SG 8 kω 7 4 9. µf 8 kω 4 7. µf 3 9 5 3 9 9 5 A A V CC V CC Test Circuit 3 I cco kω 8 7 9 4 5 6 A V CC 4 3--3
TA375FN/ TA375FNG Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) Quiescent current consumption ICC (ma) 7 6 5 4 3 Quiescent Current Consumption Supply Voltage Characteristics f (Lo) in = 4.7 MHz V (Lo) in = dbµv * No switching pin current is included. BS FM_ALL AM_ALL Multiplication off Multiplication only 3 4 5 6 Quiescent current consumption ICCqfm (ma) 8 7 6 5 4 3 Quiescent Current Consumption Supply Voltage Characteristics FM Mode C 5 C 4 C f (Lo) in = 4.7 MHz V (Lo) in = dbµvemf * No switching pin current is included. 3 4 5 6 Supply voltage V CC (V) Supply voltage V CC (V) 8 Quiescent Current Consumption Supply Voltage Characteristics AM Mode RF Amp Conversion Gain Supply Voltage Characteristics 7 C 5 Quiescent current consumption ICCqam (ma) 6 5 4 3 5 C 4 C f (Lo) in = 4.7 MHz V (Lo) in = dbµvemf * No switching pin current is included. 3 4 5 6 RF amp conversion gain (db) 5 5 3 35 4 45 5 5 C C 4 C f (RF) in = 34.9 MHz V (RF) in = 5dBµVEMF RF at spectrum * Input/output impedance = 5 Ω 3 4 5 6 Supply voltage V CC (V) Supply voltage V CC (V) RF amp conversion gain (db) 3 4 5 6 RF Amp Frequency Characteristics DEC (R5) = 75 Ω DEC (R5) = kω 7 V (RF) in = 5dBµV 8 RF at spectrum 9 * Input/output impedance = 5 Ω 3 5 S curve output voltage (V).5.5.5 6 S Curve Characteristics (IF ) f (IF) in =.7 MHz + f V (IF) in = 5dBµVEMF AF at multi meter 4 C C 5 C 4 4 6 RF input frequency f (RF) in (MHz) Detuning frequency (khz) 5 3--3
TA375FN/ TA375FNG Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) RSSI output voltage VRSSI (V).5.5.5 RSSI Output Voltage Characteristics (IF, MIX, and RF inputs) MIX (multiplication is used) RF IF MIX (multiplication is not used) f (RF) in = f (MIX) in = 34.9 MHz/ f (IF) in =.7 MHz f (Lo) in = 4.7/34. MHz V (Lo) in = dbµv RSSI at multi meter 4 6 8 RSSI output voltage VRSSI (V).5.5.5 RSSI Output Voltage Characteristics (MIX inputs) f (MIX) in = 34.9 MHz f (Lo) in = 4.7 MHz V (Lo) in = dbµv LOBS = H RSSI at multi meter 4 C C 5 C 4 6 8 Input level Vin (dbµvemf) MIX input level V (MIX) in (dbµvemf) S/N Characteristics (IF input) in the FM Mode S/N Characteristics (IF input) in the AM Mode S + N S + N, N (db) 3 N AMR 4 f (IF) in =.7 MHz 5 Dev = ± khz fmod = 6 Hz 6 FIL at audio 7 4 6 8 S + N, N (db) 3 4 5 6 7 8 9 S + N N f (IF) in =.7 MHz AM = 9% fmod = 6 Hz FIL at audio 4 6 8 IF input level V (IF) in (dbµvemf) IF input level V (IF) in (dbµvemf) S + N, N (db) 3 4 5 6 7 S/N Characteristics (MIX input) in the AM Mode when Multiplication is Used 4 C 5 C C 5 C 4 C C C f (MIX) in = 34.9 MHz f (Lo) in = 4.7 MHz f (Lo) in = dbµv Dev = ± khz fmod = 6 Hz FIL at audio 4 C 5 C 4 6 8 S + N, N (db) 3 4 5 6 7 8 9 S/N Characteristics (MIX input) in the AM Mode when Multiplication is Used S + N N f (MIX) in = 34.9 MHz f (Lo) in = 34. MHz V (Lo) in = dbµv AM = 9% fmod = 6 Hz (rectangular wave) FIL at audio 4 6 8 MIX input level V (MIX) in (dbµvemf) MIX input level V (MIX) in (dbµvemf) 6 3--3
TA375FN/ TA375FNG Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) 3 Mixer Conversion Gain Supply Voltage Characteristics 4 Mixer Conversion Gain Frequency Characteristics Mixer conversion gain GV (db) C 5 C f (MIX) in = 34.9 MHz V (MIX) = 6dBµV f (Lo) in = 4.7 MHz 4 C V (Lo) in = dbµv 3 MIX at spectrum 4 * Terminated with the IF input impedance 5 3 4 5 6 Mixer conversion gain GV (MIX) (db) 4 C 8 C 6 V (MIX) in = 6dBµV 5 C V (Lo) in = dbµv 4 LOBS = L (direct input) MIX at spectrum * Terminated with the IF input impedance 8 3 5 Local input level V (L o ) in (dbµv) MIX input frequency f (MIX) in (MHz) 3 Mixer Conversion Gain Local Input Level Characteristics 3 Mixer Conversion Gain Local Input Level Characteristics Mixer conversion gain GV (MIX) (db) 3 5 Multiplication is not used Multiplication is used f (MIX) in = 34.9 MHz V (MIX) in = 6dBµV f (Lo) in = 4.7 MHz MIX at spectrum * Terminated with the IF input impedance 6 7 8 9 Mixer conversion gain GV (MIX) (db) 3 4 5 4 C 5 C C f (MIX) in = 34.9 MHz V (MIX) in = 6dBµV f (Lo) in = 4.7 MHz MIX at spectrum * Terminated with the IF input impedance 6 7 8 9 Local input level V (L o ) in (dbµv) Local input level V (L o ) in (dbµv) Attenuation level (db) 5 5 5 5 6 5 C 4 C Detuning Characteristics C f (IF) in = 5dBµVEMF f (IF) in =.7 MHz + f Dev = ± khz fmod = 6 Hz FIL at audio 4 4 6 Mixer output level V (MIX) out (dbµv) 6 4 8 6 4 4 f (MIX) in = 34.9 MHz f (Lo) in = 4.7 MHz V (Lo) in = dbµv fmod = 6 Hz MIX at spectrum Desired wave Mixer Intercept Point Interference wave 6 8 Detuning frequency (khz) 7 3--3
TA375FN/ TA375FNG Reference Data (This is characteristics data when it used evaluation boards. This is not guarantee on condition that it is stating except electrical characteristics.) Demodulation distortion (db) 5 5 3 35 4 6 Demodulation Distortion Characteristics f (IF) in =.7 MHz Vin = 5dBµV Dev = ± khz AM/FM = L FIL at audio * The FIL output signal is measured with a noise meter after amplified. 4 4 6 Demodulation output (mvrms) 45 4 35 C 3 5 5 5 Demodulation Output Supply Voltage Characteristics (FM) 5 C 4 C f (IF) in =.7 MHz V (IF) in = 5dBµVEMF Dev = ± khz fmod = 6 Hz FIL at audio 3 4 5 6 Detuning frequency (IF ) (khz) Supply voltage V CC (V) 54 Waveform Shaping Duty Ratio Supply Voltage Characteristics FM Mode 5 Waveform shaping output duty ratio DR (%) 5 48 46 44 4 4 38 36 34 C 5 C 4 C f (IF) in =.7 MHz V (IF) in = 5dBµVEMF Dev = ± khz fmod = 6 Hz DATA at oscilloscope 3 4 5 6 Supply voltage V CC (V) 8 3--3
Reference Data (with a broadband ceramic filter (8 k) used) TA375FN/ TA375FNG -db SAD sensitivity (dbµvemf) 3 4 5 6 -db SAD Sensitivity Characteristics FM Modulation f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio 7 4 6 8 -db SAD sensitivity (dbµvemf) 8 6 4 4 6 8 34.6 Sensitivity Detuning Characteristics (AM and FM modulation) AM Dev = ±8 k Dev = ± k Dev = ±4 k Dev = ±6 k f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio 34.7 34.8 34.9 35 35. 35. FM modulation Dev (khz) RF input frequency f (RF) in (MHz) -db SAD sensitivity (dbµvemf) 3.5.5.5.5 -db SAD sensitivity Supply Voltage Characteristics Dev = ± khz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio AF pin voltage (V).5.5.5 S Curve Supply Voltage Characteristics 4dBµVMF 3dBµVMF dbµvmf dbµvmf dbµvmf fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at multi meter.5 3 4 5 6 Supply voltage V CC (V) 34.4 34.55 34.7 34.85 35 35.5 35.3 35.45 RF input frequency f (RF) in (MHz) S + N, AMR (db) 3 4 S/N and AMR RF Input Characteristics (Dev = ± k) S + N AMR f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio S + N, AMR (db) 3 4 S/N and AMR RF Input Characteristics (Dev = ±4 k) S + N AMR f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio 5 6 N 5 6 N 7 4 6 8 7 4 6 8 RF input level V (RF) in (dbµvemf) RF input level V (RF) in (dbµvemf) 9 3--3
Reference Data (with a broadband ceramic filter (8 k) used) TA375FN/ TA375FNG Demodulation output Vod (mvrms) 4 8 6 4 Demodulation Output Supply Voltage Characteristics Dev = ±6 khz Dev = ±4 khz Dev = ± khz f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at mult meter Waveform shaping output duty ratio DR (%) 6 58 56 54 5 5 48 46 44 4 Waveform Shaping Output Duty Ratio Supply Voltage Characteristics Dev = ± k Dev = ±4 k f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv DATA at oscilloscope 3 4 5 6 4 3 4 5 6 Supply voltage V CC (V) Supply voltage V CC (V) Reference Data (with a narrowband ceramic filter (5 k) used) -db SAD sensitivity (dbµvemf) 3 4 5 6 7 -db SAD Sensitivity FM Modulation Characteristics f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv SAW FILTER 3 4 5 6 -db SAD sensitivity (dbµvemf) 8 6 4 4 6 8 34.7 -db SAD Sensitivity Frequency Characteristics (AM and FM) AM Dev = ±4 khz Dev = ± khz f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv SAW FILTER FIL at audio 34.75 34.8 34.85 34.9 34.95 35 35.5 35. FM modulation (khz) RF input frequency f (RF) in (MHz) -db SAD sensitivity (dbµvemf).5.5.5 3 3.5 4 4.5 -db SAD Sensitivity Supply Voltage Characteristics f (RF) in = 34.9 MHz Dev = ± khz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio AF pin voltage (V).5.5.5 S Curve Supply Voltage Characteristics 4dBµVEMF 3dBµVEMF 5dBµVEMF dbµvemf dbµvemf dbµvemf fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at multi meter 5.5.5 3.5 4.5 5.5 Supply voltage V CC (V) 34.4 34.55 34.7 34.85 35 35.5 35.3 35.45 RF input frequency f (RF) in (MHz) 3--3
Reference Data (with a narrowband ceramic filter (5 k) used) TA375FN/ TA375FNG S + N, N, AMR (db) 3 4 S/N and AMR RF Input Characteristics (Dev = ± k) N S + N AMR f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio S + N, N, AMR (db) 3 4 5 S/N and AMR RF Input Characteristics (Dev = ±4 k) N S + N AMR f (RF) in = 34.9 MHz fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv FIL at audio 5 6 6 4 6 8 7 4 6 8 RF input level V (RF) in (dbµvemf) RF input level V (RF) in (dbµvemf) Waveform shaping output duty ratio DR (%) 6 58 56 54 5 5 48 Waveform Shaping Output Duty Ratio Supply Voltage Characteristics 46 Dev = ± 44 4 4 Dev = ±4 f (RF) in = 34.9 MHz V (RF) in = dbµv fmod = 6 Hz f (Lo) in = 4.7 MHz V (Lo) in = dbµv DATA at oscilloscope 3 4 5 6 Supply voltage V CC (V) 3--3
Application Circuit (FSK) pf TA375FN/ TA375FNG CF: SFELAM7FA-B (Murata Mfg. Co., Ltd.)--broadband (8 k) SFELAM7JAA-B (Murata Mfg. Co., Ltd.)--narrowband (5 k) LC: P-5DJ (Sumida Corporation) 3--3 C. µf C9 µf C 33 kω kω R 56 pf R 3.6 kω C8 pf C7 9 8 7 6 5 4 RSSI REF AM/FM MIX AM/FM RSSI Comparator GND RF 3 CHARGE RF DEC 6 pf SAW RF 8 OSC MIX LOBS IF GND BS QUAD 3 4 5 6 7 8 9 DATA X. µf R C3 C6 47 pf C3. µf C6. µf. µf R4 kω C C9 R. µf 56 pf 68 kω R8 68 kω C8 68 kω pf C C9 R5 pf R9 R6 33 pf 7 nh kω kω L4 C 6 pf. µf 33 nh pf C3 C7 pf C5. µf 4 LPF 3 LPF AF RF C8 Detector BPF IF DEC C. µf C > = C5 C L5 Lo DATA 4.7 MHz C5. µf R3 4.7 kω Detector C7
Application Circuit (ASK) pf TA375FN/ TA375FNG CF: SFELAM7FA-B (Murata Mfg. Co., Ltd.)--broadband (8 k) SFELAM7JAA-B (Murata Mfg. Co., Ltd.)--narrowband (5 k) 3 3--3. µf 4.7 MHz C9 µf C. µf 33 kω kω R 56 pf 3.6 kω C8 pf C7 9 8 7 6 5 4 RSSI REF AM/FM MIX AM/FM RSSI Comparator GND RF 3 CHARGE RF DEC 6 pf SAW RF 8 OSC MIX LOBS IF GND BS 3 4 5 6 7 8 9 DATA X C R C3 C6 47 pf C3. µf C6. µf C7 MiR4 kω C C9 R C C9 pf. µf 56 pf 68 kω R5 R6 7 nh kω 33 nh 33 pf kω L4 C8 C 6 pf. µf 4 3 pf C3 C5. µf LPF R9 LPF AF RF C8 Detector Lo IF DEC QUAD BPF To pin 9 DATA µf C. µf C( > = C5) L5 68 kω 36 kω To pin 9. µf
TA375FN/ TA375FNG Package Dimensions Weight:.9 g (typ.) 4 3--3
TA375FN/ TA375FNG RESTRICTIONS ON PRODUCT USE 77EBA TOSHIBA is continually working to improve the quality and reliability of its products. Nevertheless, semiconductor devices in general can malfunction or fail due to their inherent electrical sensitivity and vulnerability to physical stress. It is the responsibility of the buyer, when utilizing TOSHIBA products, to comply with the standards of safety in making a safe design for the entire system, and to avoid situations in which a malfunction or failure of such TOSHIBA products could cause loss of human life, bodily injury or damage to property. In developing your designs, please ensure that TOSHIBA products are used within specified operating ranges as set forth in the most recent TOSHIBA products specifications. Also, please keep in mind the precautions and conditions set forth in the Handling Guide for Semiconductor Devices, or TOSHIBA Semiconductor Reliability Handbook etc.. The TOSHIBA products listed in this document are intended for usage in general electronics applications (computer, personal equipment, office equipment, measuring equipment, industrial robotics, domestic appliances, etc.). These TOSHIBA products are neither intended nor warranted for usage in equipment that requires extraordinarily high quality and/or reliability or a malfunction or failure of which may cause loss of human life or bodily injury ( Unintended Usage ). Unintended Usage include atomic energy control instruments, airplane or spaceship instruments, transportation instruments, traffic signal instruments, combustion control instruments, medical instruments, all types of safety devices, etc.. Unintended Usage of TOSHIBA products listed in this document shall be made at the customer s own risk. The products described in this document are subject to the foreign exchange and foreign trade laws. The information contained herein is presented only as a guide for the applications of our products. No responsibility is assumed by TOSHIBA CORPORATION for any infringements of intellectual property or other rights of the third parties which may result from its use. No license is granted by implication or otherwise under any intellectual property or other rights of TOSHIBA CORPORATION or others. The information contained herein is subject to change without notice. 5 3--3