U4223B ATMEL Corporation, U4223B Datasheet - Page 8

• Manufacturer Part Number: U4223B
• Description: Time-code Receiver With A/d Converter
• Manufacturer: ATMEL Corporation

Test Circuit (for Fundamental Function)
U4223B
8 (18)
1.657V
Vcc
Ivcc
3V
Vd
Iin
1M
Sd0
Vd0
Vin
~
300k
Sd1
100k
Vd1
VCC
D1
D0
IN
300k
Sd2
Vsb
Vd2
STABILISATION
GND
CONVERTER
D2
ANALOG
300k
DIGITAL
Sd3
Vd3
AMPLIFIER
SB
D3
AGC–
300k
1M
Ssb
Figure 17. Test circuit
Isb
Q1A
Spon
Î Î
Vrec
U4223B
PON
82p
Q1B
Ipon
10M
Irec
1M
Q2B
REC
CONTROL
DECODING
RECTIFIER
82p
TIME
Srec
Vrec
Q2A
680p
INT
Sint
10M
3.3n
Iint
Test point: DVM with high and
low input line for measuring a
voltage Vxx or a current Ixx
by conversion into a voltage
DEC
CLK
FLB
FLA
SL
420k
1M
Vint
1M
Sdec
100M
Rev. A7, 06-Mar-01
Vint
Isl
10M
Iclk
Idec
Ssl
Vclk
Vdec