SONY CXA1619BM/BS FM/AM Radio For the availability of this product,please contact the sales office Description CXA1619BM/BS is a one-chip FM/AM radio IC CXA1619BM CXA1619BS designed for radio-cassette tape recorders and 28 pin SOP (Plastic) 30 pin SDIP (Plastic) headphone tape recorders,and has the following functions. Features Small number of peripheral components. Low current consumption (Vcc=3 V) For FM:ID=5.8 mA (Typ.) Absolute Maximum Ratings(Ta=25C) For AM:ID=4.7 mA (Typ.) ·Supply voltage Vcc 14 V Built-in FM/AM select switch Operating temperature Topr -10to+60 C Large output of AF amplifier. ·Storage temperature Tstg -50t0+125 C EIAJ output=500 mW(Typ.)when Allowable power dissipation Vcc=6 V.load impedance 8 PD 700 mW (CXA1619BM) Function Po 1000 mW FM section (CXA1619BS) RF amplifier,Mixer and OSC (incorporating AFC variable capacitor). Recommended Operating Conditions ·IF amplifier Supply voltage Vcc 2to7.5 V Quadrature detection (CXA1619BM) ·Tuning LED driver Vcc 2to 8.5 V AM section (CXA1619BS) RF amplifier,Mixer and OSC (with RF AGC) IF amplifier(with IF AGC) ·Detector ·Tuning LED driver AF section Electronic volume control 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. 1 E99214-TE
—1— E99214-TE 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. Absolute Maximum Ratings (Ta=25 °C) • Supply voltage VCC 14 V • Operating temperature Topr –10 to +60 °C • Storage temperature Tstg –50 to +125 °C • Allowable power dissipation PD 700 mW (CXA1619BM) PD 1000 mW (CXA1619BS) Recommended Operating Conditions Supply voltage VCC 2 to 7.5 V (CXA1619BM) VCC 2 to 8.5 V (CXA1619BS) Description CXA1619BM/BS is a one-chip FM/AM radio IC designed for radio-cassette tape recorders and headphone tape recorders, and has the following functions. Features • Small number of peripheral components. • Low current consumption (VCC=3 V) For FM : ID=5.8 mA (Typ.) For AM : ID=4.7 mA (Typ.) • Built-in FM/AM select switch. • Large output of AF amplifier. EIAJ output=500 mW (Typ.) when VCC=6 V, load impedance 8 Ω Function FM section • RF amplifier, Mixer and OSC (incorporating AFC variable capacitor). • IF amplifier • Quadrature detection • Tuning LED driver AM section • RF amplifier, Mixer and OSC (with RF AGC) • IF amplifier (with IF AGC) • Detector • Tuning LED driver AF section • Electronic volume control Structure Bipolar monolithic IC FM/AM Radio CXA1619BM CXA1619BS 28 pin SOP (Plastic) 30 pin SDIP (Plastic) CXA1619BM/BS
SONY CXA1619BM/BS Block Diagram CXA1619BM FM/AM AF Ripple AF DET AFCAFC F FM AM BAND GND OUT Vcc FILTER IN OUT AGCAGC GND METER NC IF IN IF IN SELECT 28— 2⑦202524 232221 15 AM IF DET AGC TUNING METER AF POWER AMP AM FE FMIF FM DISCRIMINATOR FM FE 1 ② ③ ④⑤⑥⑦⑧⑨0①②③①4 GND FM NF VOL AM AFC FM Reg FM AM NC FM FE FM/AM DISCRI oSc OSC OUT RF RFIN RF IN GNDFE OUT CXA1619BS FM/AM AF Ripple AF DET AFCAFC IF FM AM BAND GND GND OUT VCC FILTER IN OUT AGCAGC GND METER NC IF IN IF IN SELECT AM IF DET AGC TUNING METER AF POWER AMP AM FE FM IF FM DISCRIMINATOR FM FE (个②③④⑤⑥⑦8⑨0①2③—14—1⑤ GND GND FM NF VOL AM AFC FM Reg FM AM NC FM FE FM/AM DISCRI oSc OSC OUT RF RF IN RF IN GND FE OUT -2-
—2— CXA1619BM/BS Block Diagram CXA1619BM CXA1619BS FM/AM BAND SELECT AM IF IN FM METER NC IF IN IF GND AFC AGC AFC AGC DET OUT AF IN Ripple VCC FILTER AF GND OUT GND FM DISCRI NF AM OSC AFC FM OSC Reg OUT FM RF AM RF IN NC FM RF IN FE GND FM/AM FE OUT VOL TUNING METER FM IF FM DISCRIMINATOR FM FE AF POWER AMP 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 AM IF DET AGC AM FE FM/AM BAND SELECT AM IF IN FM METER NC IF IN IF GND AFC AGC AFC AGC DET OUT AF IN Ripple VCC FILTER AF GND GND OUT GND FM DISCRI NF AM OSC AFC FM OSC Reg OUT FM RF AM RF IN NC FM RF IN FE GND FM/AM FE OUT GND VOL AM IF DET AGC AM FE FM FE FM IF 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 AF POWER AMP TUNING METER FM DISCRIMINATOR 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15
SONY CXA1619BM/BS Standard Circuit Design Data (The pin numbers in the parenthesis are for CXA1619BS.) Voltage(V) No. Symbol Vcc=3 V Vcc=6V Equivalent circuit Description FM AM FM AM 1 GND 0 0 0 (1,2) 0 ② Phase-shift circuit Connect 2(3) FM DISCRI 2.182.704.885.43 ceramic discriminator 3(4)NF 1.51.53.03.0 Vcc Negative feedback pin ×100 ×100 27(28) AF OUT 1.51.53.0 3.0 GND Power amplifier output pin ④ 320kJ Connect variable resistor for 4(5) VOL CONT 1.251.251.251.25 electronic volume control. 80k ⑤ 5(6) AM OSC 1.251.251.251.25 3.6k AM local oscillation circuit 6(7） AFC 1.25 1.25 ⑧ AFC variable capacitor pin 1.25V 8(9) REG OUT 1.251.251.251.25 ⑥ (REG) Regulator pin 1.25 V(Typ.) ⑦ 7(8) FM OSC 1.251.251.251.25 FM local oscillation circuit -3-
—3— CXA1619BM/BS Standard Circuit Design Data (The pin numbers in the parenthesis are for CXA1619BS.) Voltage (V) No. Symbol VCC=3 V VCC=6 V Equivalent circuit Description FM AM FM AM 1 (1, 2) 2 (3) 3 (4) 27 (28) 4 (5) 5 (6) 6 (7) 8 (9) 7 (8) GND FM DISCRI NF AF OUT VOL CONT AM OSC AFC REG OUT FM OSC 0 0 0 0 2.18 2.70 4.88 5.43 1.5 1.5 3.0 3.0 1.5 1.5 3.0 3.0 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 ∗ 1.25 ∗ 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 2 1k 1.2k 3 27 VCC GND ×100 ×100 4 GND 20k 80k 5 3.6k 6 8 1.25V (REG) 7 Phase-shift circuit Connect ceramic discriminator Negative feedback pin Power amplifier output pin Connect variable resistor for electronic volume control. AM local oscillation circuit AFC variable capacitor pin Regulator pin 1.25 V (Typ.) FM local oscillation circuit
SONY CXA1619BM/BS Voltage (V) No. Symbol Vcc=3 V Vcc=6V Equivalent circuit Description FM AM FM AM 9(10) FM RF 1.251.251.251.25 ⑨ Connect FM RF tuning coil 8k 12(13)FM RF IN 0.30 0.30 1k FM RF input pin ⑩ 10(11) AM RF IN 1.251.251.251.25 Vcc AM RF input pin 11(12) NC 0 0 0 0 GND 13(14) (FE GND) 0 0 0 0 AM FM FM/AM IF output pin of FM and AM. 14(15) 0.360.20.360.2 FE OUT 220 Connect IF filter. M- Vcc FM and AM bands selection BAND 15(16) switch pin.During GND it SELECT 1.3001.300 becomes AM and during 1⑤ open it becomes FM. 77 GND 16(17) AM IF IN 0 0 0 0 2k Input pin of AM IF. 17(18) FM IF IN 0.34 0 0.88 0 Input pin of FM IF. 18(19) NC 0 0 0 0 一4-
—4— CXA1619BM/BS Voltage (V) No. Symbol VCC=3 V VCC=6 V Equivalent circuit Description FM AM FM AM 9 (10) 12 (13) 10 (11) 11 (12) 13 (14) 14 (15) 15 (16) 16 (17) 17 (18) 18 (19) FM RF FM RF IN AM RF IN NC GND (FE GND) FM/AM FE OUT BAND SELECT AM IF IN FM IF IN NC 1.25 1.25 1.25 1.25 0.3 0 0.3 0 1.25 1.25 1.25 1.25 0 0 0 0 0 0 0 0 0.36 0.2 0.36 0.2 1.30 0 1.30 0 0 0 0 0 0.34 0 0.88 0 0 0 0 0 9 3p 8k 1k 12 10 VCC AM FM 220 14 15 GND VCC 16 2k Connect FM RF tuning coil FM RF input pin AM RF input pin IF output pin of FM and AM. Connect IF filter. FM and AM bands selection switch pin. During GND it becomes AM and during open it becomes FM. Input pin of AM IF. Input pin of FM IF
SONY CXA1619BM/BS Voltage(V) No. Symbol Vcc=3 V Vcc=6V Equivalent circuit Description FM AM FMAM 1⑨ 1.25V-◆- ×3 Meter drive circuit 19(20) METER 1.61.64.5 4.5 (For tuning indicator) GND 20(21) GND 0 0 0 0 AFC pin of W band. 21(22) AFC/AGC 1.251.491.251.49 During AM,it determines time constant of AGC AFC pin of J band. 22(23) AFC/AGC 1.251.251.251.25 During AM,it determines time constant of AGC. GND 23(24) DET OUT 1.251.01.251.0 Detection output pin 24 11k 24(25)AFIN 0 00 0 Power amplifier input pin GND Vcc 17k RIPPLE 25(26) 2.712.715.45.4 25 FILTER ≤73k Ripple filter 而 90k 26(27) Vcc 3.0 3.06.0 6.0 Power supply pin 28 GND 0 0 0 0 Power GND (29,30) The pin voltage of pin 6 during AM,it is the same pin voltage of pin 22(23)during J BAND and is the same pin voltage of pin 21(22)during W BAND. -5-
—5— CXA1619BM/BS Voltage (V) No. Symbol VCC=3 V VCC=6 V Equivalent circuit Description FM AM FM AM 19 (20) 20 (21) 21 (22) 22 (23) 23 (24) 24 (25) 25 (26) 26 (27) 28 (29, 30) METER GND AFC/AGC AFC/AGC DET OUT AF IN RIPPLE FILTER VCC GND 1.6 1.6 4.5 4.5 0 0 0 0 1.25 1.49 1.25 1.49 1.25 1.25 1.25 1.25 1.25 1.0 1.25 1.0 0 0 0 0 2.71 2.71 5.4 5.4 3.0 3.0 6.0 6.0 0 0 0 0 GND 19 ×3 N 1.25V 22 21 23 33k 39k GND 24 11k ×4 ×4 82k GND 25 17k 73k 90k VCC Meter drive circuit (For tuning indicator) AFC pin of W band. During AM, it determines time constant of AGC AFC pin of J band. During AM, it determines time constant of AGC. Detection output pin Power amplifier input pin Ripple filter Power supply pin Power GND ∗ The pin voltage of pin 6 during AM, it is the same pin voltage of pin 22 (23) during J BAND and is the same pin voltage of pin 21 (22) during W BAND