U4224B Datasheet, PDF (8/17 Pages) TEMIC Semiconductors – Time Code Receiver

U4224B
Test Circuit (for Fundamental Function)
Ivcc
Iin
1M
V_CC
3V
Vd
Ipon
1.657V
300k
Test point: DVM with high and low input
line for measuring of a voltage Vxx or a
current lxx by conversion into a voltage.
Stco
Vtco
Spon
1M
82p
1M
Isl
TCO PON Q2B Q2A
Ssl
U4224B
100k
SL
10M
Sdec
V_CC STABILISATION
DECODING ^FLB
AGC-
AMPLIFIER
IN
RECTIFIER
FLA
100M
DEC
Idec
Vdec
GND
SB
Q1A
Q1B REC INT
~
Vin
82p
680p 3.3 n 420k
Vrec
Srec
Ssb
Sint
Vsb
1M
10M
10M
Vint
Vrec
Vint
Isb
Irec
Iint
94 8384 e
8 (17)
TELEFUNKEN Semiconductors
Rev. A3, 02-Apr-96