UTC TA7640AP LINEAR INTEGRATED CIRCUIT
AM/FM IF PROCESSOR
DESCRIPTION
The UTC TA7640AP Is A Monolithic Integrated Circuit
Designed For The Radios Cassette Tape Recorder.
FEATURES
*Low Operating Current
*Low External Component
*Internal AM/FM Switch
*Wide Operating Voltage : Vcc=3.8V
DIP-16
BLOCK DIAGRAM
Vcc=5V
4.7kΩ
100
µF
INPUT
0.01
µF
0.047
µF
0.015
µF
16
15
14
13
12
11
10
9
AM IF AMP
FM IF AMP
IF AMP
FREQUENCY
DETECTOR
AM/FM
SWITC
H
DC AMP
IF AMP
MIXER
LOCAL
OSC
REGULATOR
AM AMP
DRIVER
1
2
3
4
5
68kΩ
6
7
8
0.047
µF
AM
FM
10
µF
22
µF
UTC
UNISONIC TECHNOLOGIES CO., LTD.
1
QW-R110-007,A
UTC TA7640AP LINEAR INTEGRATED CIRCUIT
ABSOLUTE MAXIMUM RATINGS
(Ta=25°C)
PARAMETER
Voltage
Led Driving Current
Power Dissipation
Operating Temperature
Storage Temperature
NOTE :Ta>25°C,6mw/°C
SYMBOL
VCC
ILAMP
PD
TOPR
TSTG
VALUE
8
10
750
-25 ~-+75
-55~-+150
UNIT
V
mA
mW
°C
°C
DC ELECTRICAL CHARACTERISTICS
(VCC=5V)
PARAMETER
Pin 1 AM Mixer Input
Pin 2 AM Mixer Bypass
Pin 3 AM Local OSC
Pin 4 Voltage Regulator
Pin 5 AM IF Out
Pin 6 Level Meter Out
Pin 7 Led Driver Output
Pin 8 GND
Pin 9 Dectector
Pin 10 Vcc
Pin 11 FM Decter Out
Pin 12 AM IF Bypass
Pin 13 AM IF Input
Pin 14 AM IFBypass
Pin 15 FM IF Input
Pin 16 AM Mixer Output
SYMBOL
AM
V1
V2
V3
V4
V5
V6
V7
V8
V9
V10
V11
V12
V13
V14
V15
V16
0
1.4
5
5
1.5
1.5
1.5
1.5
5
1.5
1.5
2.3
2.3
1
1
TYP
FM
0
0
2.3
2.3
0.9
0.9
0
1.5
5
5
1.5
1.5
1.5
1.5
5
UNIT
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
V
AC ELECTRICAL CHARACTERISTICS
(Ta=25°C,V
CC
=5V,FM;f=10.7MHz,
∆f=22.5KHz,
FM=400Hz AM;
f=1MHz, Mod=30%,FM=400Hz)
PARAMETER
Supply Current
FM
Input Limiting Voltage
Detector Output
Signal Noise Ratio
Total Harmonic
Distortion
Am Rejection
SYMBOL
ICC(1)
ICC(2)
VIN(lim)
VOD
S/N
THD
AMR
CHART
1
TEST CONDITIONS
FM
AM
VIN=0
VIN=0
-3dB
VIN=66dBµ
VIN=80dBµ
VIN=80dBµ
VIN=80dBµ
MIN
TYP
10
7
40
MAX
15
10
46
114
UNIT
mA
1
1
1
1
1
dBµ
mVrms
dB
%
dBµ
57
85
65
0.05
38
UTC
UNISONIC TECHNOLOGIES CO., LTD.
2
QW-R110-007,A
UTC TA7640AP LINEAR INTEGRATED CIRCUIT
PARAMETER
Leverl Meter Driving
Voltage
Led Driving Sensitivity
AM
Gain
Detector Output Voltage
Signal To Noise Ratio
Total Harmonic
Distortion
Signal Meter Output
Level Meter Driving
Voltage
Oscillation Stop Voltage
Pin 5 Output Impedance
Vstop
R09
1
RDUMP=∝
f=1KHZ
1.5
3
V
KΩ
VM
VL
1
1
VIN=100dBµ
IL=1mA
1.6
1.75
32
1.9
V
dBµ
GV
VOD
S/N
THD
1
1
1
1
VIN=26dBµ
VIN=60dBµ
VIN=60dBµ
VIN=60dBµ
20
65
30
95
47
1
60
125
mVrms
mVrms
dB
%
VL
1
IL=1mA
46
52
dB
SYMBOL
VM
CHART
1
TEST CONDITIONS
VIN=100dBµ
MIN
1.6
TYP
1.75
MAX
1.9
UNIT
V
TEST CIRCUIT
10Ω
0.022
µF
0.022
µF
Vcc=5V
mA
0.01
µF
4.7kΩ
0.015
µF
FM IN
75Ω
220Ω
FM\AM
OUT
16
15
14
13
12
11
10
9
Vin
UTC TA7640AP
1
AM IN
50Ω
0.033
µF
2
3
4
5
68kΩ
6
LED
390
Ω
7
8
33kΩ
47
µF
0.047
µF
Vin
FM CLOSE
FM OPEN
0.047
µF
50Ω
100Ω
VL(ON)
22
µF
UTC
UNISONIC TECHNOLOGIES CO., LTD.
3
QW-R110-007,A
PCB设计
