YOUDA INTEGRATED CIRCUIT YD1191

SINGLE-CHIP FM/AM RADIO IC—YD1191

DESCRIPTION
The YD1191 is a one-chip FM/AM radio IC designed for radio-cassette tape recorders.

FEATURES
*Small number of peripheral components.
*Low current consumption (Vcc=3V)
For FM:ID=5.3mA (Typ.)
For AM:ID=3.4mA (Typ.)
*Built-in FM/AM select switch.
*Built-in RF AGC, IF AGC circuit.
*Tuning LED driver.
*Large output of AF amplifier.
Vcc=6V,EIAJ output=500mW (Typ.)
When load impedance 8Ω

BLOCK DIAGRAM

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AM IF DET AGC
TUNING
AM RF AMP METER
AF Power AMP FM IF AMP
FM DISCRIMINATOR

FM FE

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WuXi YouDa Electronics Co., Ltd

Add: No.5 Xijin Road, National Hi-Tech Industrial Development Zone, Wuxi Jiangsu China
Tel: 86-510-85205117 86-510-85205106 Fax: 86-510-85205110 Website: www.e-youda.com
SHENZHEN OFFICE Tel： 86-755-83740369 Fax： 86-755-83741418
Ver 5.0 1 of 4 2006-6-20
 YOUDA INTEGRATED CIRCUIT YD1191

ABSOLUTE MAXIMUM RATINGS (Tamb=25℃)

PARAMETER SYMBOL VALUE UNIT

Supply Voltage Vcc 9 V
Power Dissipation PD 700 mW
Operating Temperature Topr -10～+70 ℃
Storage Temperature Tstg -50～+125 ℃

ELECTRICAL CHARACTERISTICS (Tamb=25℃, VCC=6V，Unless otherwise specified)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

AM, Vin=0 3.5 10.0
Quiescent Current Iccq mA
FM, Vin=0 7.0 14.0
FM:
Front End
AV1 Vin1=40dBμV/100MHz 32 39 46 dB
Voltage Gain
Vin1=90dBμV/10.7MHz
Detection Output VD1 39 77.5 155 mV
(1kHz,22.5kHz DEV)
IF Knee Level VSEN1 Vin3=level at a point 3dB down 24 32 dBμV
DetectionOutput Vin1=90dBμV/10.7MHz
THD1 0.3 2.0 %
Distortion Factor (1KHz, 75kHz DEV
FM Meter Current IBI Vin3=60dBμV/10.7MHz 1.8 3.5 7.0 mA
AM:
Front End
Av2 Vin2=80dBμV/1660kHz 15 22 29 dB
Voltage Gain
455kHz(kHz 30% MOD), output
IF Voltage Gain VSEN2 14 20 27 dBμ
is -3.4dBm
Vin3=85dBμV/455kHz
Detector Output VD2 39 77.5 155 mV
(1kHz, 30%MOd)
Vin3=85dBμV/455kHz
Meter Current IB2 1.3 3.0 7.0 mA
(kHz, 30%MOD)
Detection Output Vin2=95dBμV/1660kHz
THD2 0.6 2.0 %
Distortion Factor (1kHz, 30%MOD), Vcc=7.8V
Vin3=60dBμV/10.7MHz
Audio Voltage Gain Av3 27 31.5 36 dB
Vin4=30dBm/1kHz
Vin3=60dBμV/10.7MHz
Audio Distortion
THD3 Vin4=-20dBm/1kHz 0.3 2.5 %
Factor
Output is 50mW
Vin3=0dBμV/10.7MHz
Muting Level Av4 Vin4=-20dBm/1kHz 8 15 22 dB
Output is 50mW

WuXi YouDa Electronics Co., Ltd 2 of 4 Website: www.e-youda.com

 BATT SW2

R6
C10
0.01μF

1k
EPJ
R5
AM

WuXi YouDa Electronics Co., Ltd

330Ω
APPLICATION CIRCUIT

C21

C20 0.1μF
220μF 2.2KΩ R4 SW1FM

C17 10μF
C14 10μF
C12 10μF

C18 470μF
C13 4.7μF

C16 0.022μF

+
+
+
+

+
+
C15
C19
0.1μF CF1 T1 C11

0.47μF
100pF
YOUDA INTEGRATED CIRCUIT

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YD1191

3 of 4
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C22

+
R3 R4 C7
CF3 C8 C5 ANT

0.01μF
100kΩ1pF +
150Ω 4.7μF 10μF
C6
L4 L3 L2 L1 0.01μF
10 kΩ BPF
R2 C4 C3 C1
6pF 22pF C2 2pF
50kΩ 18pF
RV1
YD1191

Website: www.e-youda.com
 YOUDA INTEGRATED CIRCUIT YD1191

OUTLINE DRAWING

WuXi YouDa Electronics Co., Ltd 4 of 4 Website: www.e-youda.com