Ikegami HTM-1550R Service Manual page 79

TC74VHC541FS
GI
Al l
A2 3
A3 4
A4 5
AS 6
A6 7
A7 8
A8 9
GND 10
20 Vee
19 G2
'--1>--+-LJl8 YI
'---1?---t--U
17 Y2
'---1:>-----t----t
116 Y3
'--{>-+--0
15 Y4
'---1?---t--U
14 YS
-~J
,13 Y6
~~J•12 Y7
>----n11 YB
(TOP VIEW)
TC4W53FU
LM4040CIM3X-25
SOT-23
MP7633JS
1 01JT1
~FEE.OBA.CK
1
mm
2
VREFIN
Vss
'
Voo I+)
BIT I (MSB) 4
BIT 10 (LSBI
BIT9
BITS
BIT 7
LT1085IT
TABIS
OUTPUT
FRONT VIEW. ·
TPAGKAGE
:,HEAO PLASTIC T0-220
a.M
=
so~cm
TC7W08F
DECODER
DECODER
CLOCK
GENERATOR
TLC2932IPWR
LOGIC VDO
SELECT
VCO OUT
F..,-A
F..,-B
PFO OUT
LOGIC GNO
- 65 -
TC4S66F
CXD1171M
6MSB'S
CURRENT
CELLS
CURRENT CELLS
(FOR FULL SCALE}
BIAS VOLTAGE
GENERATOR
2LSB'S
CURRENT
CELLS
MAX232DW
vc·o v
00
C1+ 16
Vee
Ra.,~
Vs+ 2
GND
Vco111
VCO GND
C1-
3 T10UT
VCO INHIBIT
C2+
4
R11N
PFO INHIBIT
C2- 5 R10UT
NC
6
T11N
Vs-
T20UT
7 T2IN
R2IN
8 R20UT
TD62504FB
01 Ol OJ 04 OS Of 07
11 11 I) 14 15 16 17 (OM-E
2 DVDD
23
ovoo
22 AVDD
21
K)
10
19 AVDO
AVoo
VG
VREF
IREF
AV,s
ovss