U4224B Datasheet, PDF (1/17 Pages) TEMIC Semiconductors – Time Code Receiver

Time Code Receiver
U4224B
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 Very low power consumption
D Very high sensitivity
D High selectivity by using two crystal filters
D Power down mode available
D Only a few external components necessary
D Digitalized serial output signal
D AGC hold mode
Block Diagram
GND ³
V_CC ¹
PON
15
Power Supply
TCO
16
93 7727 e
Decoder
11 _FLB
10 _FLA
9 _DEC
IN ²
AGC
Amplifier
4 5 6 13 14
SB Q1A Q1B Q2A Q2B
Rectifier & ¹² _SL
Integrator
7
8
REC
INT
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96
1 (17)