CLC2058 Dual 4V to 36V Amplifier

Transcription

1 Comlinear CLC8 Dual 4V to 6V Amplifier FEATURES n Unity gain stable n db voltage gain n.mhz gain bandwidth product n.mω input resistance n db power supply rejection ratio n 9dB common mode rejection ratio n 4V to 6V single supply voltage range n ±V to ±8V dual supply voltage range n Gain and phase match between amps n CLC8: improved replacement for NJM48 and MC48 n CLC8: Pb-free SOIC-8 APPLICATIONS n Active Filters n Audio Amplifiers n Audio AC- Decoder Systems n General purpose dual ampliifer General Description The COMLINEAR CLC8 is a dual voltage feedback amplifier that is internally frequency compensated to provide unity gain stability. The CLC8 offers.mhz of bandwidth at a gain of. The CLC8 also features high gain, low input voltage noise, high input resistance, and superb channel separation making it well suited for audio filter applications in set-top-boxes, DVD players, and televisions. The COMLINEAR CLC8 is designed to operate over a wide power supply voltage range, ±V to ±8V (4V to 6V). It utilizes an industry standard dual amplifier pin-out and is available in a Pb-free, RoHS compliant SOIC-8 package. Typical Application - nd Order Low-Pass Audio Filter R kω V EE =-V C pf Comlinear CLC8 Dual 4V to 6V Amplifier Rev D V IN C µf/v R kω C pf R.kΩ R4 6.8kΩ (6) 4 CLC8 () 8 V CC =V (7) C.µF C6.µF C4 µf/v R kω V OUT Ordering Information Part Number Package Pb-Free RoHS Compliant Operating Temperature Range Packaging Method CLC8ISO8X SOIC-8 Yes Yes -4 C to 8 C Reel Moisture sensitivity level for all parts is MSL-. Exar Corporation Kato Road, Fremont CA 948, USA Tel Fax

2 CLC8 Pin Configuration CLC8 Pin Description Pin No. Pin Name Description OUT Output, channel OUT 8 V S -IN Negative input, channel -IN IN -V S OUT -IN IN IN Positive input, channel 4 -V S Negative supply IN Positive input, channel 6 -IN Negative input, channel 7 OUT Output, channel 8 V S Positive supply Comlinear CLC8 Dual 4V to 6V Amplifier Rev D 8- Exar Corporation / Rev D

3 Absolute Maximum Ratings The safety of the device is not guaranteed when it is operated above the Absolute Maximum Ratings. The device should not be operated at these absolute limits. Adhere to the Recommended Operating Conditions for proper device function. The information contained in the Electrical Characteristics tables and Typical Performance plots reflect the operating conditions noted on the tables and plots. Parameter Min Max Unit Supply Voltage 4 (±) V Differential Input Voltage 6 (±) V Input Voltage (±) V Power Dissipation (T A = C) - SOIC-8 mw Reliability Information Parameter Min Typ Max Unit Junction Temperature C Storage Temperature Range -6 C Lead Temperature (Soldering, s) 6 C Package Thermal Resistance SOIC-8 C/W Notes: Package thermal resistance (q JA ), JDEC standard, multi-layer test boards, still air. Recommended Operating Conditions Parameter Min Typ Max Unit Operating Temperature Range -4 8 C Supply Voltage Range 4 (±) 6 (±8) V Comlinear CLC8 Dual 4V to 6V Amplifier Rev D 8- Exar Corporation / Rev D

4 Electrical Characteristics T A = C, V s = V, -V s = -V, R f = R g =kω, R L = kω to V S /, G = ; unless otherwise noted. Symbol Parameter Conditions Min Typ Max Units Frequency Domain Response UGBW SS BW SS BW LS Unity Gain Bandwidth -db Bandwidth Large Signal Bandwidth G =, V OUT =.V pp, V S = V, R f = 4.6 MHz G =, V OUT =.V pp, V S = V, R f = 4.86 MHz G =, V OUT =.V pp, V S = V.49 MHz G =, V OUT =.V pp, V S = V. MHz G =, V OUT = V pp, V S = V. MHz G =, V OUT = V pp, V S = V.74 MHz GBWP Gain-Bandwidth Product. MHz Time Domain Response t R, t F Rise and Fall Time V OUT =.V step; (% to 9%), V S = V ns V OUT =.V step; (% to 9%), V S = V 98 ns OS Overshoot V OUT =.V step % SR Slew Rate Distortion/Noise Response THDN e n Total Harmonic Distortion plus Noise Input Voltage Noise V step, V S = V.6 V/µs 4V step, V S = V.8 V/µs V OUT = V RMS, f = khz, G =, R L = kω, V S = V. % > khz, V S = V nv/ Hz > khz, V S = V nv/ Hz X TALK Crosstalk Channel-to-channel, khz 6 db DC Performance V IO Input Offset Voltage () V S = V to V mv I b Input Bias Current () V CM = V 7 4 na I OS Input Offset Current () V CM = V na PSRR Power Supply Rejection Ratio () DC, R S kω 8 db A OL Open-Loop Gain () R L = kω, V OUT = V to V 8 db I S Supply Current () Total, R L =. 4. ma Input Characteristics CMIR Common Mode Input Range (,) V S = V ± V CMRR Common Mode Rejection Ratio () DC, R S kω 7 9 db R IN Input Resistance. MΩ Output Characteristics R OUT Output Resistance 4 Ω V OUT Output Voltage Swing () R L = kω ± ±4 V R L = kω ± ± V I SOURCE Output Current, Sourcing V IN = V, V IN- = V, V OUT = V ma I SINK Output Current, Sinking V IN = V, V IN- = V, V OUT = V 6 ma Comlinear CLC8 Dual 4V to 6V Amplifier Rev D Notes:. % tested at C at V S = ±V. 8- Exar Corporation 4/ Rev D

5 Typical Performance Characteristics T A = C, V s = V, -V s = -V, R f = R g =kω, R L = kω to V S /, G = ; unless otherwise noted. Non-Inverting Frequency Response Inverting Frequency Response Normalized Gain (db) V OUT =.V pp. Frequency (MHz) Large Signal Frequency Response Normalized Gain (db) G = R f = G = G = G = Vout = Vpp Vout = 4Vpp Normalized Gain (db) V OUT =.V pp -. Frequency (MHz) -db Bandwidth vs. V OUT -db Bandwidth (MHz) 4 G = - G = - G = - G = - Comlinear CLC8 Dual 4V to 6V Amplifier Rev D -. Frequency (MHz) V OUT (V PP ) Small Signal Pulse Response Large Signal Pulse Response.. Output Voltage (V). -. Output Voltage (V) Time (us) Time (us) 8- Exar Corporation / Rev D

6 Typical Performance Characteristics T A = C, V s = V, -V s = GND, R f = R g =kω, R L = kω to V S /, G = ; unless otherwise noted. Non-Inverting Frequency Response Inverting Frequency Response Normalized Gain (db) V OUT =.V pp. Frequency (MHz) Large Signal Frequency Response Normalized Gain (db) G = R f = G = G = G = Vout = Vpp Vout = Vpp Normalized Gain (db) V OUT =.V pp -. Frequency (MHz) -db Bandwidth vs. V OUT -db Bandwidth (MHz) 4 G = - G = - G = - G = - Comlinear CLC8 Dual 4V to 6V Amplifier Rev D -. Frequency (MHz)..... V OUT (V PP ) Small Signal Pulse Response Large Signal Pulse Response Output Voltage (V)...4 Output Voltage (V) Time (us) Time (us) 8- Exar Corporation 6/ Rev D

7 Typical Performance Characteristics T A = C, V s = V, -V s = -V, R f = R g =kω, R L = kω to V S /, G = ; unless otherwise noted. Open Loop Voltage Gain vs. Frequency Supply Current vs. Temperature Open Loop Gain (db) RL=K... Frequency (KHz) Maximum Output Voltage Swing vs. Frequency Maximum Swing Voltage (V) RL=K, THDN<% Supply Current (ma) Temperature ( C) Maximum Output Voltage Swing vs. R L Output Voltage Swing (V) Postive Voltage Swing Negative Voltage Swing Comlinear CLC8 Dual 4V to 6V Amplifier Rev D. Frequency (KHz) -6. Resistance Load (KΩ) Input Offset Voltage vs. Temperature Input Bias Current vs. Temperature 4 Input Offset Voltage (mv) Input Bias Current (na) Temperature ( C) Temperature ( C) 8- Exar Corporation 7/ Rev D

8 Typical Performance Characteristics T A = C, V s = V, -V s = -V, R f = R g =kω, R L = kω to V S /, G = ; unless otherwise noted. Supply Voltage vs. Supply Current Crosstalk vs. Frequency ICC (ma)..4. IEE Functional Block Diagram - Input Input -. ICC -. Supply Voltage (/-V) IEE (ma) Crosstalk (db) Frequency (MHz) V CC Comlinear CLC8 Dual 4V to 6V Amplifier Rev D Output V EE 8- Exar Corporation 8/ Rev D

9 Application Information Basic Operation Figures,, and illustrate typical circuit configurations for non-inverting, inverting, and unity gain topologies for dual supply applications. They show the recommended bypass capacitor values and overall closed loop gain equations. Input Input R g - V s -V s 6.8μF.μF.μF 6.8μF R f R L Output G = (R f/r g) Figure. Typical Non-Inverting Gain Circuit R R g - V s -V s Figure. Typical Inverting Gain Circuit V s 6.8μF.μF.μF 6.8μF 6.8uF R f R L G = - (R f/r g) Output For optimum input offset voltage set R = R f R g Power Dissipation Power dissipation should not be a factor when operating under the stated k ohm load condition. However, applications with low impedance, DC coupled loads should be analyzed to ensure that maximum allowed junction temperature is not exceeded. Guidelines listed below can be used to verify that the particular application will not cause the device to operate beyond it s intended operating range. Maximum power levels are set by the absolute maximum junction rating of C. To calculate the junction temperature, the package thermal resistance value Theta JA (Ө JA ) is used along with the total die power dissipation. T Junction = T Ambient (Ө JA P D ) Where T Ambient is the temperature of the working environment. In order to determine P D, the power dissipated in the load needs to be subtracted from the total power delivered by the supplies. P D = P supply - P load Supply power is calculated by the standard power equation. P supply = V supply I RMS supply V supply = V S - V S- Power delivered to a purely resistive load is: P load = ((V LOAD ) RMS )/Rloadeff The effective load resistor (Rload eff ) will need to include the effect of the feedback network. For instance, Rload eff in figure would be calculated as: R L (R f R g ) Comlinear CLC8 Dual 4V to 6V Amplifier Rev D Input -.uf.uf R L Output These measurements are basic and are relatively easy to perform with standard lab equipment. For design purposes however, prior knowledge of actual signal levels and load impedance is needed to determine the dissipated power. Here, P D can be found from 6.8uF G = -V s Figure. Unity Gain Circuit P D = P Quiescent P Dynamic - P Load Quiescent power can be derived from the specified I S values along with known supply voltage, V Supply. Load power 8- Exar Corporation 9/ Rev D

10 can be calculated as above with the desired signal amplitudes using: (V LOAD ) RMS = V PEAK / ( I LOAD ) RMS = ( V LOAD ) RMS / Rload eff The dynamic power is focused primarily within the output stage driving the load. This value can be calculated as: P DYNAMIC = (V S - V LOAD ) RMS ( I LOAD ) RMS Assuming the load is referenced in the middle of the power rails or V supply /. Figure 4 shows the maximum safe power dissipation in the package vs. the ambient temperature for the packages available. Maximum Power Dissipation (W).. SOIC Ambient Temperature ( C) Overdrive Recovery An overdrive condition is defined as the point when either one of the inputs or the output exceed their specified voltage range. Overdrive recovery is the time needed for the amplifier to return to its normal or linear operating point. The recovery time varies, based on whether the input or output is overdriven and by how much the range is exceeded. The CLC8 will typically recover in less than ns from an overdrive condition. Figure 6 shows the CLC8 in an overdriven condition. Input Voltage (V) - - Input Output 4 Time (us) V IN = 7.V pp G = Figure 6. Overdrive Recovery - - Output Voltage (V) Comlinear CLC8 Dual 4V to 6V Amplifier Rev D Figure 4. Maximum Power Derating Driving Capacitive Loads Increased phase delay at the output due to capacitive loading can cause ringing, peaking in the frequency response, and possible unstable behavior. Use a series resistance, R S, between the amplifier and the load to help improve stability and settling performance. Refer to Figure. Input R g - R f R s C L R L Output Figure. Addition of R S for Driving Capacitive Loads Layout Considerations General layout and supply bypassing play major roles in high frequency performance. CADEKA has evaluation boards to use as a guide for high frequency layout and as an aid in device testing and characterization. Follow the steps below as a basis for high frequency layout: Include 6.8µF and.µf ceramic capacitors for power supply decoupling Place the 6.8µF capacitor within.7 inches of the power pin Place the.µf capacitor within. inches of the power pin Remove the ground plane under and around the part, especially near the input and output pins to reduce parasitic capacitance Minimize all trace lengths to reduce series inductances Refer to the evaluation board layouts below for more information. 8- Exar Corporation / Rev D

11 Evaluation Board Information The following evaluation boards are available to aid in the testing and layout of these devices: Evaluation Board # CEB6 CLC8 Evaluation Board Schematics Products Evaluation board schematics and layouts are shown in Figures 7-9. These evaluation boards are built for dual- supply operation. Follow these steps to use the board in a single-supply application:. Short -Vs to ground.. Use C and C4, if the -V S pin of the amplifier is not directly connected to the ground plane. Figure 8. CEB6 Top View Comlinear CLC8 Dual 4V to 6V Amplifier Rev D Figure 9. CEB6 Bottom View Figure 7. CEB6 Schematic 8- Exar Corporation / Rev D

12 Typical Applications pf Audio_Input L kω µf.8kω 9kΩ µf 6Ω Audio_Output L Normalized Gain (db) V OUT = V pp Audio_Input R DAC Load Resistor DAC Load Resistor kω 68pF 68pF AUDIO AMPLIFIER µf µf.µf V S kω kω.µf Amp RV Ω Amp RV.8kΩ Ω µf V S 8 / CLC8 4 pf 9kΩ 6 / CLC8 7 µf kω kω 6Ω 47pF 47pF Audio_Output R Figure : Typical Circuit for Filtering and Driving Audio in STB or DVD Player Applications -7. Frequency (khz) Figure : AC Reponse of Figure (V S =V, R L =6Ω) Crosstalk (db) V OUT = V pp -. Frequency Response (khz) Figure : Cross-Talk Performance of Figure (V S =V, R L =6Ω) Comlinear CLC8 Dual 4V to 6V Amplifier Rev D 8- Exar Corporation / Rev D

13 Mechanical Dimensions SOIC-8 Package Comlinear CLC8 Dual 4V to 6V Amplifier Rev D For Further Assistance: Exar Corporation Headquarters and Sales Offices 487 Kato Road Tel.: () Fremont, CA USA Fax: () NOTICE EXAR Corporation reserves the right to make changes to the products contained in this publication in order to improve design, performance or reliability. EXAR Corporation assumes no responsibility for the use of any circuits described herein, conveys no license under any patent or other right, and makes no representation that the circuits are free of patent infringement. Charts and schedules contained here in are only for illustration purposes and may vary depending upon a user s specific application. While the information in this publication has been carefully checked; no responsibility, however, is assumed for inaccuracies. EXAR Corporation does not recommend the use of any of its products in life support applications where the failure or malfunction of the product can reasonably be expected to cause failure of the life support system or to significantly affect its safety or effectiveness. Products are not authorized for use in such applications unless EXAR Corporation receives, in writing, assurances to its satisfaction that: (a) the risk of injury or damage has been minimized; (b) the user assumes all such risks; (c) potential liability of EXAR Corporation is adequately protected under the circumstances. Reproduction, in part or whole, without the prior written consent of EXAR Corporation is prohibited. 8- Exar Corporation / Rev D

14 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Exar: CLC8ISO8X