UTC-IC 7642

UTC 7642
LINEAR INTEGRATED CIRCUIT
ONE CHIP AM RADIO CIRCUIT
DESCRIPTION
UTC 7642 is suitable for low voltage portable Radio,
cassette system and other wireless AM system. The package
of UTC7642 is TO-92.
FEATURE
1
*Low operating voltage: Down to VCC=1.3V
*Low Quiescent Current:ICCO=0.2mA
*Low external component required.
TO-92
EQUIVALENT CIRCUIT
3
R3
12KΩ
2
T1
C1
12pF
R5
12KΩ
R4
12KΩ
R2
3.3KΩ
R6
12KΩ
R11
12KΩ
R13
12KΩ
R15
C4 12KΩ
23pF
C2
12pF
R7
12KΩ
T4
R10
12KΩ
T5
T7
T6
R14
74.6Ω
R12
12KΩ
R8
12KΩ
R1
5.6KΩ
T2
R9
12KΩ
T8
T10
T9
T3
1
ABSOLUTE MAXIMUM RATINGS (Tested at Ta=25°C, unless otherwise specified)
PARAMETERS
Supply Voltage
SYMBOLS
MIN.
VCC
MAX.
UNIT
6
V
Operating Temperature
Topr
-10
60
°C
Storage temperature
TSTG
-55
150
°C
UTC
UNISONIC TECHNOLOGIES CO. LTD
1
QW-R110-015,A
UTC 7642
LINEAR INTEGRATED CIRCUIT
ELECTRICAL CHARACTERISTICS
(Tested at Ta=25°C, VCC=1.3V,fm=1KHZ,fO=1MHZ,MOD=30%, unless other specified)
PARAMETERS
SYMBOLS
Supply Voltage
VCC
Quiescent Current
ICCQ
TEST CONDITIONS
VI=0
MIN.
TYP.
MAX.
1.2
1.3
1.6
UNIT
V
0.14
0.20
0.30
mA
MΩ
Input Resistance
RI
-
3
-
Maximum Sensitivity
SM
VOD=3mV
-
600
-
µV
Detector Output Voltage
VOD
VI=10mV
5
15
30
mV
The Range of AGC
∆A
-
30
-
dB
TEST CIRCUIT
RAGC
1.5kΩ
100kΩ
Vcc
0.01 µF
2
UTC 7642 3
1
75 Ω
Vin
Vout
0.1 µF
APPLICATION CIRCUIT
RAGC 1kΩ
7.5kΩ
100kΩ
57Ω
820Ω
600 µH
140pF
2
1.5V
UTC 7642 3
0.1 µF
1
7pF
0.15 µF
1kΩ
32Ω
0.01 µF
UTC
UNISONIC TECHNOLOGIES CO. LTD
2
QW-R110-015,A
UTC 7642
LINEAR INTEGRATED CIRCUIT
UTC assumes no responsibility for equipment failures that result from using products at values that
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or
other parameters) listed in products specifications of any and all UTC products described or contained
herein. UTC products are not designed for use in life support appliances, devices or systems where
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in
whole or in part is prohibited without the prior written consent of the copyright owner. The information
presented in this document does not form part of any quotation or contract, is believed to be accurate
and reliable and may be changed without notice.
UTC
UNISONIC TECHNOLOGIES CO. LTD
3
QW-R110-015,A