U4222B Datasheet, PDF (1/9 Pages) TEMIC Semiconductors – Radio Controlled Clock Receiver

TELEFUNKEN Semiconductors
U4222B
Radio Controlled Clock Receiver
Description
The U4222B is a bipolar integrated straight through
receiver circuit for the frequency of 40 kHz. The device
is designed for radio controlled clock applications, in
particular for the Japanese transmitter JG2AS.
Features
D Low power consumption
D Very high sensitivity
D High selectivity by quartz resonator
D Stop-function available
D Only a few external components necessary
D Digitized serial output signal
Block Diagram
PON
14
TCO
13
VCCA
16
GND
15
Power supply
IN2
1
Amplifier 1
IN1
2
NC
12
Driver
NC
VCCD
10
9
NC
Comparator
11
AGC
Amplifier 2
Demodulator
CAGC
4
3
GND (analog)
86
OUTA1 INA2
Figure 1.
7
5
GND (digital) ^CDEM
93 7599 e
Rev. A1: 13.08.1996
Preliminary Information
1 (9)