CXA1619AM/AS FM/AM Radio For the availability of this product, please contact the sales office. Description CXA1619AM/AS 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=450 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 CXA1619AM 28 pin SOP (Plastic) CXA1619AS 30 pin SDIP (Plastic) 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 (CXA1619AM) PD 1000 mW (CXA1619AS) Recommended Operating Conditions Supply voltage VCC 2 to 7.5 V (CXA1619AM) VCC 2 to 8.5 V (CXA1619AS) 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— E98419-TE CXA1619AM/AS Block Diagram CXA1619AM AF GND OUT 28 27 Ripple AF VCC FILTER IN 26 25 24 DET AFC AFC OUT AGC AGC 23 22 21 AM IF DET AGC AF POWER AMP FM/AM FM AM BAND IF IN IF IN SELECT 17 16 15 IF GND METER NC 20 19 18 TUNING METER AM FE FM IF FM DISCRIMINATOR FM FE 1 GND 2 3 FM NF DISCRI 4 5 6 VOL AM OSC AFC 7 8 9 FM Reg OSC OUT FM RF 10 AM RF IN 11 NC 12 13 14 FM FE FM/AM RF IN GND FE OUT CXA1619AS AF GND GND OUT 30 29 28 VCC Ripple AF FILTER IN 27 26 25 DET AFC AFC OUT AGC AGC 24 23 22 AM IF DET AGC AF POWER AMP IF GND METER NC 21 20 19 FM/AM FM AM BAND IF IN IF IN SELECT 18 17 16 TUNING METER AM FE FM IF FM DISCRIMINATOR FM FE 1 2 GND GND 3 4 FM NF DISCRI 5 6 7 VOL AM OSC AFC 8 9 FM Reg OSC OUT —2— 10 FM RF 11 AM RF IN 12 NC 15 13 14 FM FE FM/AM RF IN GND FE OUT CXA1619AM/AS Standard Circuit Design Data No. 1 (1, 2) Symbol GND (The pin numbers in the parenthesis are for CXA1619AS.) Voltage (V) VCC=3 V VCC=6 V FM AM FM AM 0 0 0 Equivalent circuit Description 0 2 2 (3) FM DISCRI Phase-shift circuit Connect ceramic discriminator 1k 2.18 2.70 4.88 5.43 1.2k 3 (4) NF VCC 1.5 1.5 3.0 3.0 ×100 Negative feedback pin 27 ×100 27 (28) AF OUT 1.5 1.5 3.0 3.0 GND 3 Power amplifier output pin 4 20k 4 (5) VOL CONT Connect variable resistor for electronic volume control. 1.25 1.25 1.25 1.25 80k GND 5 5 (6) AM OSC 1.25 1.25 1.25 1.25 6 (7) AFC 1.25 8 (9) REG OUT ∗ 1.25 3.6k ∗ 1.25 1.25 1.25 1.25 AM local oscillation circuit AFC variable capacitor pin 8 1.25V (REG) 6 Regulator pin 1.25 V (Typ.) 7 7 (8) FM OSC 1.25 1.25 1.25 1.25 FM local oscillation circuit —3— CXA1619AM/AS No. Symbol Voltage (V) VCC=3 V VCC=6 V FM AM FM AM Equivalent circuit 1.25 1.25 1.25 1.25 9 Description 3p 9 (10) FM RF Connect FM RF tuning coil 8k 12 (13) FM RF IN 0.3 0 0.3 10 (11) AM RF IN 1.25 1.25 1.25 1.25 12 0 FM RF input pin 1k 10 11 (12) NC 13 (14) GND (FE GND) 0 0 0 0 0 0 0 0 AM RF input pin VCC AM FM/AM 14 (15) FE OUT FM IF output pin of FM and AM. Connect IF filter. 0.36 0.2 0.36 0.2 220 14 VCC 15 (16) BAND SELECT 1.30 0 1.30 FM and AM bands selection switch pin. During GND it becomes AM and during open it becomes FM. 0 15 GND 16 (17) AM IF IN 0 0 0 0 17 (18) FM IF IN 0.34 0 0.88 0 0 0 0 0 18 (19) NC 16 2k Input pin of AM IF. Input pin of FM IF. —4— CXA1619AM/AS No. Symbol Voltage (V) VCC=3 V VCC=6 V FM AM FM AM Equivalent circuit Description 19 ×3 1.25V 19 (20) METER Meter drive circuit (For tuning indicator) 1.6 1.6 4.5 4.5 N GND 20 (21) GND 0 0 0 0 21 (22) AFC/AGC 1.25 1.49 1.25 1.49 22 (23) AFC/AGC 1.25 1.25 1.25 1.25 22 33k 39k 21 23 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. GND 23 (24) DET OUT 1.25 1.0 1.25 1.0 Detection output pin 11k 24 24 (25) AF IN 0 0 0 ×4 0 ×4 Power amplifier input pin 82k GND VCC 25 (26) RIPPLE FILTER 17k 2.71 2.71 5.4 5.4 25 73k Ripple filter 90k 26 (27) VCC 28 GND (29, 30) 3.0 3.0 6.0 6.0 0 0 0 Power supply pin 0 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. —5— GV3 VD3 IB2 THD2 GV4 THD3 AM IF voltage gain AM detection output level AM meter current AM detection output distortion factor Audio voltage gain Audio distortion factor 10 11 12 13 14 IB1 FM meter current 7 9 THD1 FM detection output distortion factor 6 GV2 VD2 FM IF knee level 5 AM front end voltage gain VD1 FM detection output level 4 8 ID1 ID2 GV1 Symbol AM circuit current FM circuit current FM front end voltage gain Item 1 2 3 No. Electrical Characteristics —6— A A A B B A — A A — A A — A A A A A A A B B B B A A A A A A A A A 6 A A A A — — — — B A — — — — B A A A A A A — — A A — — A A — — A A — — A 1 A A A SW conditions 2 3 4 5 B A A A B A A B B A A B VE VE VD IM VD VD VB IM VD VD VD Test Point IA IA VA 27 — Distortion factor for output of 50 mW VIN4=–20 dBm, 1 kHz — 1.3 39 14 15 1.8 — — 39 — — 32 Min. VIN4=–30 dBm, 1 kHz VIN2=95 dBµV, 1660 kHz (1 kHz, 30 % MOD) VIN3=85 dBµV, 455 kHz VIN3 when 455 kHz (1 kHz, 30 % MOD) output is –34 dBm VIN3=85 dBµV, 455 kHz (1 kHz, 30 % MOD) VIN2=60 dBµV, 1660 kHz VIN3=60 dBµV, 10.7 MHz VIN3=90 dBµV, 10.7 MHz (1 kHz, 22.5 kHz DEV) VIN3=level at a point 3 dB down from VIN3=90 dBµV, 10.7 MHz (1 kHz, 22.5 kHz DEV) VIN3=90 dBµV, 10.7 MHz (1 kHz, 75 kHz DEV) No signal, AM No signal, FM VIN1=40 dBµV, 100 MHz Conditions 0.9 31.5 0.6 3.0 77.5 20 22 3.5 0.3 24 77.5 4.8 7.6 39 Typ. mA mA dB Unit dBµV dB mA % dBµV % dB % mA 0 dBµV=1 µV 2.5 36 2.0 7.0 155 mVrms 27 29 7.0 2.0 32 155 mVrms 10.0 14.0 46 Max. (See the Electrical Characteristics Test Circuit, Ta=25 °C, VCC=6 V) CXA1619AM/AS —7— VIN3 VB VA VIN1 VIN2 2k 330 24p S2 30p CF1 B A 0.01µ 100 S3 B A IFT 2k 0.01µ 10µ REG Electrical Characteristics Test Circuit 13 12 B S5 B S4 A A 16 0.01µ 15 FM/AM BAND AM SELECT IF IN 17 AM RF IN 10 FM RF 9 18 IM 19 0.01µ 20 IF NC METER GND NC 11 0.01µ FM IF IN FM/AM FE FM FE OUT GND RF IN 14 10p 1000p 150µH 43p BPF 150 21 22 AFC AGC 4.7µ AFC AGC 1µ FM OSC 7 B 5 24p S6 4 S1 3 1µ 26 0.047µ 100µ 5k 25 2 CF3 150 1 470µ 28 GND CF1 CF3 IFT OSC 8 33k 33k 24k 24k GND VCC VE : AM 455kHz C.F. : FM DISCRIMINATOR : AM 455kHz IFT : AM OSC 0.047µ 27 AF OUT FM GND DISCRI 1µ 50k Ripple FILTER VCC NF B A VOL VIN4 A 24 AF IN AM OSC 0.012µ VD 1µ 23 DET OUT AFC 6 8p 30p CXA1619AM Reg OUT 8 30p 100k OSC AFC CXA1619AM/AS —8— AM FM S1 ANT C10 0.01µ R4 2.2k C11 100p BPF Application Circuit 1 CF1 15 R5 330 16 FM/AM BAND AM SELECT IF IN 17 AM RF IN 10 FM RF 9 18 19 C12 10µ 50V 20 IF NC METER GND CF2 FM IF IN NC 11 L2 C1 2p L3 FM OSC 7 C7 1p 21 22 6 R6 1k DET OUT D1 24 AF IN VOL 4 NF 3 C15 0.47µ 50V 25 C17 10µ 50V C19 0.1µ 26 Ripple FILTER VCC L4 AM OSC 5 C16 0.022µ R7 23 C3 22p R1 100k AFC C14 4.7µ 50V AFC AGC C13 10µ 50V AFC AGC CXA1619AM Reg OUT 8 C2 18p 2 CF3 1 R3 C18 470µ 6.3V 27 28 150 C21 220µ 10V GND C20 0.1µ AF OUT FM GND DISCRI C8 4.7µ 50 C4 6p 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. T1 C6 0.01µ 13 12 FM/AM FE FM FE OUT GND RF IN 14 C5 10µ L1 R2 10k S2 EPJ RV1 50k BATT CXA1619AM/AS —9— AM FM S1 ANT C10 0.01µ R4 2.2k C11 100p BPF Application Circuit 2 CF1 16 R5 330 17 FM/AM BAND AM SELECT IF IN 18 AM RF IN 11 FM RF 10 19 20 C12 10µ 50V 21 IF NC METER GND CF2 FM IF IN NC 12 L2 C1 2p L3 8 FM OSC 22 23 R6 1k 6 D1 25 AF IN 5 VOL 4 NF C15 0.47µ 50V 26 C17 10µ 50V C19 0.1µ 27 Ripple FILTER VCC L4 AM OSC C16 0.022µ R7 24 C14 4.7µ 50V AFC AGC C13 10µ 50V AFC AGC AFC 7 C3 22p R1 100k DET OUT C7 1p CXA1619AS Reg OUT 9 C2 18p 3 CF3 2 R3 C18 470µ 6.3V 28 29 30 GND GND 1 150 C21 220µ 10V GND C20 0.1µ AF OUT FM GND DISCRI C8 4.7µ 50 C4 6p 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. T1 C6 0.01µ 13 14 FM/AM FE FM FE OUT GND RF IN 15 C5 10µ L1 R2 10k S2 EPJ RV1 50k BATT CXA1619AM/AS CXA1619AM/AS Coil data AM OSC Core diameter ø 0.06 mm 2UEW S 3 4 2 5 f (kHz) 1 6 796 L (µH) 1 to 3 270 QO 1 to 3 125 Number of widings (t) 1 to 3 4 to 6 107 29 Equivalent to L-5K7-H5 R12-1684X. Mitsumi Electric Co., Ltd. or 7TRS-8441X TOKO Co., Ltd. AM IFT 3 Core diameter ø 0.07 mm UEW S 4 2 5 1 6 CO (pF) 1 to 3 180 QO 1 to 3 90 Number of widings (t) 1 to 2 2 to 3 4 to 6 111 35 7 Equivalent to 21K7-H5 R12-8558A. Mitsumi Electric Co., Ltd. or 7MC-7789N TOKO Co., Ltd. FM RF φ 4mm φ 0.6mm 4.5t FM OSC φ 4mm φ 0.6mm 3.5t AM bar antenna f (kHz) 796 Primary L (µH) 650 Primary 91 t Secondary 20 t Secondary BPF CF1 CF2 CF3 PFWE8 (88 to 108 MHz) Soshin Electric Co., Ltd. SFU-455B SFE10.7MA5 CDA10.7MC1 Murata Mfg. Co., Ltd. Or BFCFL-455 TOKO Co., Ltd. Murata Mfg. Co., Ltd. Murata Mfg. Co., Ltd. —10— CXA1619AM/AS Package Outline Unit : mm CXA1619AM 28PIN SOP (PLASTIC) + 0.4 18.8 – 0.1 + 0.4 2.3 – 0.15 28 15 + 0.2 0.1 – 0.05 14 1 + 0.1 0.2 – 0.05 1.27 0.45 ± 0.1 0.24 0.5 ± 0.2 9.3 10.3 ± 0.4 + 0.3 7.6 – 0.1 0.15 M PACKAGE STRUCTURE SONY CODE SOP-28P-L04 EIAJ CODE SOP028-P-0375 JEDEC CODE PACKAGE MATERIAL EPOXY RESIN LEAD TREATMENT SOLDER PLATING LEAD MATERIAL 42/COPPER ALLOY PACKAGE MASS 0.7g 30PIN SDIP (PLASTIC) + 0.1 05 0.25 – 0. CXA1619AS + 0.4 26.9 – 0.1 30 + 0.3 8.5 – 0.1 10.16 16 0° to 15° 15 1 + 0.4 3.7 – 0.1 0.5 MIN 1.778 0.5 ± 0.1 3.0 MIN Two kinds of package surface: 1.All mat surface type. 2.All mirror surface type. 0.9 ± 0.15 PACKAGE STRUCTURE MOLDING COMPOUND EPOXY RESIN SONY CODE SDIP-30P-01 LEAD TREATMENT SOLDER/PALLADIUM PLATING EIAJ CODE SDIP030-P-0400 LEAD MATERIAL COPPER ALLOY PACKAGE MASS 1.8g JEDEC CODE NOTE : PALLADIUM PLATING This product uses S-PdPPF (Sony Spec.-Palladium Pre-Plated Lead Frame). —11—