U4224B
Time Code Receiver
Description
The U4224B is a bipolar integrated straight through receiver circuit in the frequency range of 40 to 80 kHz.
The device is designed for radio controlled clock applications.
Features
D
D
D
D
Very low power consumption
Very high sensitivity
High selectivity by using two crystal filters
Power down mode available
D
Only a few external components necessary
D
Digitalized serial output signal
D
AGC hold mode
Block Diagram
PON
GND
V
CC
3
1
15
Power Supply
TCO
16
Decoder
93 7727 e
11
10
9
FLB
FLA
DEC
IN
2
4
SB
Q1A
AGC
Amplifier
5
6
13
14
Q2B
Rectifier &
Integrator
7
REC
8
INT
12
SL
Q1B Q2A
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
1 (17)
TEMIC [ TEMIC SEMICONDUCTORS ]
