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CXA-1191 Dataheets PDF



Part Number CXA-1191
Manufacturers Unisonic Technologies
Logo Unisonic Technologies
Description FM/AM Radio
Datasheet CXA-1191 DatasheetCXA-1191 Datasheet (PDF)

UTC CXA1191 FM/AM Radio DESCRIPTION LINEAR INTEGRATED CIRCUIT The UTC CXA1191 is a one-chip FM/AM radio IC designed for radio-cassette tape recorders and headphone tape recorders. SOP-28 FEATURES *Small number of peripheral components *Low current consumption (Vcc=3V) FM: lD=5.3mA (Typ.) AM: lD=3.4mA (Typ.) *Built-in FM/AM select switch *Large current of AF amplifier DIP-28 FUNCTIONS FM section RF amplifier, Mixer and OSC (incorporating AFC variable capacitor) IF amplifier Quadrature detect.

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UTC CXA1191 FM/AM Radio DESCRIPTION LINEAR INTEGRATED CIRCUIT The UTC CXA1191 is a one-chip FM/AM radio IC designed for radio-cassette tape recorders and headphone tape recorders. SOP-28 FEATURES *Small number of peripheral components *Low current consumption (Vcc=3V) FM: lD=5.3mA (Typ.) AM: lD=3.4mA (Typ.) *Built-in FM/AM select switch *Large current of AF amplifier DIP-28 FUNCTIONS 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 FM muting Structure Bipolar silicon monolithic IC ABSOLUTE MAXIMUM RATINGS(Ta=25°C) PARAMETER Supply voltage Operating temperature Storage temperature Allowable power dissipation SYMBOL Vcc Topr Tstg PD VALUE 9 -10 ~ +60 -50 ~ +125 700 (SOP-28) 1000 (DIP-28) UNIT V °C °C mW UTC UNISONIC TECHNOLOGIES CO., LTD. 1 UTC CXA1191 PARAMETER Supply voltage LINEAR INTEGRATED CIRCUIT SYMBOL Vcc Vcc RECOMMENDED OPERATING CONDITIONS VALUE 2 ~ 7.5 (SOP-28) 2 ~ 8.5 (DIP-28) UNIT V V BLOCK DIAGRAM GND 28 AF OUT 27 Vcc 26 RIPPLE FILTER 25 AF IN 24 DET OUT 23 AFC AQC 22 AFC AQC 21 IF END 20 METER 19 NC 18 FM IF IN 17 AM IF IN 16 FM/AM BAND SELECT 15 AM IF DET AGC AF POWER AMP TUNING METER AM FE FM IF FM DISCRIMINATOR FM FE 1 MUTE 2 FM DISCRI 3 NF 4 VOL 5 AM OSC 6 AFC 7 FM OSC 8 RUG OUT 9 FM RF 10 AM RF IN 11 NC 12 FW RF IN 13 FM GND 14 FM/AM IF OUT UTC UNISONIC TECHNOLOGIES CO., LTD. 2 UTC CXA1191 PIN CONFIGURATIONS PIN SYMBOL FM 1 2 MUTE FM DISCRI 0 2.18 LINEAR INTEGRATED CIRCUIT VOLTAGE(V) Vcc=3V AM 0 2.7 EQUIVALENT CIRCUIT AM 0 5.43 1K 2K 2 DESCRIPTION Vcc=6V FM 0 4.88 Phase-shift circuit, Connect ceramic discriminator. 3 27 NF AF OUT 1.5 1.5 1.5 1.5 3.0 3.0 3.0 3.0 Vcc X100 27 X100 GND 3 Negative feedback pin Power amplifier output pin 4 VOL CONT 1.25 1.25 1.25 1.25 4 Connect variable resistor 20K for electronic volume control. 80K GND 5 AM OSC 1.25 1.25 1.25 1.25 5 AM local oscillation circuit 3.6K 6 8 7 AFC REG OUT FM OSC 1.25 1.25 1.25 * 1.25 1.25 1.25 1.25 1.25 * 1.25 1.25 8 6 7 AFC variable capacitor 1.25V Regulator pin 1.25V REG (Typ.) FM local oscillation circuit pin UTC UNISONIC TECHNOLOGIES CO., LTD. 3 UTC CXA1191 9 12 FM RF FM RF IN 1.25 0.3 LINEAR INTEGRATED CIRCUIT 1.25 0 1.25 0.3 1.25 0 9 1.25V 12 1K BK Connect FM RF tuning coil. FM RF input pin 10 AM RF IN 1.25 1.25 1.25 1.25 10 Vcc AM RF input 11 13 14 NC GND (FE GND) FM/AM FE OUT 0 0 0.36 0 0 0.2 0 0 0.36 0 0 0.2 IF output pin of FM and AM, Connect IF filter AM FM 220 14 15 BAND SELECT 0.84 0 0.88 0 Vcc FM and AM bands selection switch pin. During GND it becomes 10K 15 AM and during open it becomes FM. GND 16 AM IF IN 0 0 0 0 16 2K Input pin of AM IF 17 FM IF IN 0.34 0 0.88 0 Input pin of FM IF 10 17 360 24K 5.6K GND 18 NC 0 0 0 0 24K UTC UNISONIC TECHNOLOGIES CO., LTD. 4 UTC CXA1191 19 METER 1.6 LINEAR INTEGRATED CIRCUIT 1.6 4.5 4.5 Meter drive circuit 19 1.25V (For tuning indicator) N GND 20 21 GND AFC/AGC 0 1.25 0 1.49 0 1.25 0 1.49 22 AFC pin of W band. During AM, it determines time constant of AGC. 22 AFC/AGC 1.25 1.25 1.25 1.25 21 AFC pin of J band. During AM, it determines time constant of AGC. Detection output pin GND 23 DET OUT 1.25 1.0 1.25 1.0 24 AF IN 0 0 0 0 24 11K Power amplifier input pin GND 25 RIPPLE FILTER 2.71 2.71 5.4 5.4 Vcc Ripple filter 17K 25 73K 90K 26 28 *Note: Vcc GND 3.0 0 3.0 0 6.0 0 6.0 0 Power supply pin Power GND The pin voltage of pin 6 during AM, it is the same pin voltage of pin22 (23) during J BAND and is the same pin voltage of pin 21 (22) during W BAND. UTC UNISONIC TECHNOLOGIES CO., LTD. 5 UTC CXA1191 NO ITEM LINEAR INTEGRATED CIRCUIT SYMBOL SW CONDITIONS TEST POINT CONDITIONS MIN TYP MAX UNIT ELECTRICAL CHARACTERISTICS (Ta=25°C,Vcc=6V) 1 2 3 4 5 6 1 2 3 4 AM circuit current FM circuit current FM front end voltage gain FM detection output level ID1 ID2 GV1 VD1 A B A A A A A B A A B A A B A A B A A - A B A IA IA VA VD No signal, AM No signal, FM VIN1=40dBµV,100MHZ VIN3=90dBµV,10.7 MHZ (1 kHz,22.5kHz DEV) 5 FM IF knee level VD2 A - A B A VD VIN3 level at a point 3 dB down from VIN3=90dBµV,10.7 MHZ (1 kHz,22.5kHz DEV) 6 FM detection output distortion factor 7 8 9 FM meter current AM front end voltage gain AM IF voltage gain IB1 GV2 GV3 A - A B A IM VB VD THD1 A - A B A VD VIN3=90dBµV,10.7 MHZ (1 kHz,75kHz DEV) VIN3=60dBµV,10.7 MHZ VIN3=60dBµV,1660 kHZ VIN3 w hen 455kHz (1kHz, 30% MOD) output is – 34dBm 10 AM detection output level VD3 A A - A A A VD VIN3=85dBµV,455kHZ (1kHz, 30% MOD) 11 AM meter current IB2 A A - A A A IM VIN3=85dBµV,455kHZ (1kHz, 30% MOD) 12 AM detection output distortion factor THD2 A A B B A A VD VIN2=60dBµV,1660kHZ (1kHz, 30% MOD),Vcc=7,8V 13 Audio voltage gain GV4 A - B VE VIN3=60.


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