t4225b ATMEL Corporation, t4225b Datasheet - Page 8

• Manufacturer Part Number: t4225b
• Description: Low-cost Time-code Receiver
• Manufacturer: ATMEL Corporation

Test Circuit (for Fundamental Function)
T4225B
8 (16)
Ivcc
V
3 V
CC
Iin
1M
Vin
~
100k
1.657V
V
IN1
IN
Vd
CC
Vsb
T4225B
STABILISATION
GND
Vtco
300k
Stco
AMPLIFIER
TCO
SB
AGC-
1M
Ssb
Spon
Isb
PON
Q1A
Vrec
Figure 16.
Ipon
82p
1M
Q2B
Q1B
10M
Irec
82p
Q2A
REC
DECODING
RECTIFIER
Srec
Vrec
680p 3.3 n
INT
Test point: DVM with high and low input
10M
current lxx by conversion into a voltage.
line for measuring of a voltage Vxx or a
Sint
Iint
DEC
FLB
FLA
SL
420k
1M
Vint
Sdec
100M
Vint
Rev. A3, 03-Dec-98
Isl
10M
Idec
Ssl
Vdec
95 10549