CXA1691AM/AS. FM/AM Radio. Description CXA1691AM/AS is a one-chip FM/AM radio IC designed for radio-cassette tape recorders.

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1 / Radio CXA69/AS Description CXA69/AS is a one-chip / radio IC designed for radio-cassette tape recorders. CXA69 CXA69AS 28 pin SOP (Plastic) 30 pin SDIP (Plastic) Features Small number of peripheral components. Low current consumption (=3 V) For : ID=5.8 ma (Typ.) For : ID=4.7 ma (Typ.) Built-in / select switch. Large output of amplifier. =6 V, EIAJ output=450 mw (Typ.) when load impedance 8 Ω Function section RF amplifier, Mixer and (incorporating variable capacitor). IF amplifier Quadrature detection Tuning LED driver section RF amplifier, Mixer and (with RF ) IF amplifier (with IF ) Detector Tuning LED driver section Electronic volume control muting Absolute Maximum Ratings (Ta=25 C) Supply voltage 4 V Operating temperature Topr 0 to +60 C Storage temperature Tstg 50 to +25 C Allowable power dissipation PD 700 mw (CXA69) PD 000 mw (CXA69AS) Recommended Operating Conditions Supply voltage 2 to 7.5 V (CXA69) 2 to 8.5 V (CXA69AS) Structure Bipolar monolithic IC Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. E98425-TE

2 Block Diagram CXA69 Ripple DET IF / BAND FILTER IN METER NC IF IN IF IN SELECT IF DET TUNING METER POWER P FE DISCRIMINATOR IF FE MUTE NF VOL Reg NC FE / DISCRI RF RF IN RF IN FE CXA69AS Ripple FILTER IN DET IF METER IF IN / BAND IF IN SELECT NC IF DET TUNING METER POWER P FE DISCRIMINATOR FE IF MUTE NC DISCRI NF VOL Reg RF RF IN NC RF IN FE 5 / FE 2

3 Standard Circuit Design Data (The pin numbers in the parenthesis are for CXA69AS.) Voltage (V) No. Symbol =3 V =6 V Equivalent circuit Description (, 2) MUTE 2 2 (3) DISCRI k Phase-shift circuit Connect.2k ceramic discriminator 3 (4) NF Negative feedback pin (28) Power amplifier output pin 4 4 (5) VOL CONT k Connect variable resistor for electronic volume control. 80k 5 5 (6) k local oscillation circuit 6 (7) 8 (9) REG V (REG) variable capacitor pin Regulator pin.25 V (Typ.) 7 7 (8) local oscillation circuit 3

4 Voltage (V) No. Symbol =3 V =6 V Equivalent circuit Description 9 (0) RF p Connect RF tuning coil 2 (3) RF IN k 8k RF input pin 0 0 () RF IN RF input pin (2) NC 3 (4) (FE ) 4 (5) / FE IF output pin of and. Connect IF filter. and bands selection 5 (6) BAND SELECT switch pin. During it becomes and during open it becomes. 6 (7) IF IN 6 2k Input pin of IF. 7 (8) IF IN Input pin of IF. 8 (9) NC 4

5 Voltage (V) No. Symbol =3 V =6 V Equivalent circuit Description 9 9 (20) METER V N 3 Meter drive circuit (For tuning indicator) 20 (2) pin of W band. 2 (22) / During, it determines time constant of pin of J band. 22 (23) / k 39k 2 During, it determines 23 time constant of. 23 (24) DET Detection output pin 24 (25) IN 24 k 4 4 Power amplifier input pin 82k 25 (26) RIPPLE FILTER k 73k Ripple filter 90k 26 (27) Power supply pin 28 (29, 30) Power The pin voltage of pin 6 during, it is the same pin voltage of pin 22 (23) during J BAND and is the same pin voltage of pin 2 (22) during W BAND. 5

6 Electrical Characteristics (See the Electrical Characteristics Test Circuit, Ta=25 C, =6 V) No Item circuit current circuit current front end voltage gain detection output level IF knee level detection output distortion factor meter current front end voltage gain Symbol ID ID2 GV 2 THD IB GV2 SW conditions A B A A A A A B A A B A A B A A B A A A B A A A B A A A B A A A B A A A A A A A Test Point IA IA VA IM VB Conditions No signal, No signal, VIN=40 dbµv, 00 MHz VIN3=90 dbµv, 0.7 MHz ( khz, 22.5 khz DEV) VIN3=level at a point 3 db down from VIN3=90 dbµv, 0.7 MHz ( khz, 22.5 khz DEV) VIN3=90 dbµv, 0.7 MHz ( khz, 75 khz DEV) VIN3=60 dbµv, 0.7 MHz VIN2=60 dbµv, 660 khz Min. Typ. Max. Unit ma ma db mvrms dbµv % ma db IF voltage gain detection output level meter current detection output distortion factor Audio voltage gain Audio distortion factor Muting level GV3 3 IB2 THD2 GV4 THD3 4 A A A A A A A A A A A A A A A A A B B A A A B A B A B IM VE VE VE VIN3 when 455 khz ( khz, 30 % MOD) output is 34 dbm VIN3=85 dbµv, 455 khz ( khz, 30 % MOD) VIN3=85 dbµv, 455 khz ( khz, 30 % MOD) VIN2=95 dbµv, 660 khz ( khz, 30 % MOD) VIN3=60 dbµv, 0.7 MHz VIN4= 30 dbm, khz Distortion factor for 50 mw output VIN3=60 dbµv, 0.7 MHz VIN4= 20 dbm, khz Muting level for 50 mw output VIN4= 20dBm, khz Attenuation for 60 dbµv input with VIN3 OFF dbµv mvrms ma % db % db 0 dbµv= µv 6

7 Electrical Characteristics Test Circuit REG VIN2 VIN VA 330 2k 00 B A S µH 43p 0p 00k 50k BPF 24p B A µ 50 30p 30p 000p 8p S 0.µ CF3 33k 33k 24p 2k MUTE IFT / IF FE IN NC IN RF REG VOL NF DISCRI 24k 24k VB CF CXA69 VIN3 30p S3 B A B BAND SELECT S5 B A A S4 IF IN IF IN NC METER IF µ 4.7µ µ DET 0.02µ B S6 IM VIN4 IN RIPPLE A 5k µ 0.047µ00µ 470µ 0.047µ CF : CF3 : IFT : : 8 455kHz C.F. DISCRIMINATOR 455kHz IFT VE 7

8 Application Circuit ANT BPF L C 2p L2 C2 8p L3 C3 22p L4 C4 6p RV 50k RV2 0k 4 C5 / IF 3 FE C6 2 RF IN 0 NC RF 9 RF 8 REG 7 C7 p 6 R 00k C8 4.7µ R3 50 CF3 C22 0.µ VOL NF DISCRI MUTE CXA69 S C 00p R4 2.2k C0 T BAND SELECT IF IN IF IN NC METER IF CF R5 330 CF2 C2 C3 4.7µ R6 k C4 DET IN RIPPLE D C µ C5 0.47µ/ C9 0.µ C7 C8 470µ 6.3V C20 0.µ C2 220µ 0V Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. S2 EPJ BATT 8

9 Application Circuit 2 ANT L C 2p L2 C2 8p L3 C3 22p L4 C4 6p BPF 5 C5 / IF 4 FE C6 3 RF IN 2 NC RF 0 RF 9 REG 8 C7 p 7 R 00k C8 R µ 50 CF3 C22 3 VOL NF DISCRI NC MUTE 2 0.µ CXA69AS S C 00p R4 2.2k C0 T BAND SELECT IF IN IF IN NC METER IF DET IN RIPPLE CF R5 330 CF2 C2 C3 R6 k C4 4.7µ D C µ C5 0.47µ/ C9 0.µ C7 C8 470µ 6.3V C20 0.µ C2 220µ 0V Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. RV 50k R2 0k S2 EPJ BATT 9

10 Coil data S IFT 3 S Core diameter ø 0.06 mm 2UEW f (khz) L (µh) to Equivalent to L-5K7-H5 R2-684X. Mitsumi Electric Co., Ltd. or 7TRS-844X TOKO Co., Ltd. Core diameter ø 0.07 mm UEW CO (pf) to 3 80 QO QO Number of widings (t) to 3 to 3 4 to Number of widings (t) to 3 to 2 2 to 3 4 to Equivalent to 2K7-H5 R2-8558A. Mitsumi Electric Co., Ltd. or 7MC-7789N TOKO Co., Ltd. RF φ 4mm φ 0.6mm 4.5t φ 4mm φ 0.6mm 3.5t bar antenna Primary f (khz) 796 L (µh) 650 Primary 9 t Secondary 20 t Secondary BPF PFWE8 (88 to 08 MHz) Soshin Electric Co., Ltd. CF SFU-455B Murata Mfg. Co., Ltd. Or BFCFL-455 TOKO Co., Ltd. CF2 SFE0.7MA5 Murata Mfg. Co., Ltd. CF3 CDA0.7MC Murata Mfg. Co., Ltd. 0

11 ± ± CXA69/AS Package Outline Unit : mm CXA69 28PIN SOP (PLASTIC) ± M PACKAGE STRUCTURE PACKAGE MATERIAL EPOXY RESIN SONY CODE SOP-28P-L04 LEAD TREATMENT SOLDER PLATING EIAJ CODE SOP028-P-0375 LEAD MATERIAL 42/COPPER ALLOY JEDEC CODE PACKAGE MASS 0.7g CXA69AS 30PIN SDIP (PLASTIC) to ± ± MIN 0.5 MIN Two kinds of package surface:.all mat surface type. 2.All mirror surface type. PACKAGE STRUCTURE MOLDING COMPOUND EPOXY RESIN SONY CODE EIAJ CODE SDIP-30P-0 SDIP030-P-0400 LEAD TREATMENT LEAD MATERIAL SOLDER/PALLADIUM PLATING COPPER ALLOY JEDEC CODE PACKAGE MASS.8g NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame).