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5 4 3 2 1

D D

R392
2.2M 10% .5W
OHMIN

1
R427 Q321
Q323 2.2M 10% .5W 2N5089
BUK 456-1000B C SOT23 6 8 1.75VREF->ADBUF
1.75VREF->ADBUF

2

3
R263 Q321 B 1B1C1E S4 IN4
D 2 2.2M 10% .5W D 2 RFP4N100 R264
G 3 G E 7
1 C 1 D4 U318D
S 3 CR322 B 1 S 3 2.2M 10% .5W DG211DY

6
???
2 E U537B
CR510
Q322 TLP590A
2N5089 A K BYD17GSOD
SOT23
1B1C1E R369

4

7
U341
R370 R372 1 8

V+
C203 2.2M 10% .5W 2.2M 10% .5W 2 OFSN T
3 IN- 36 5%
5 IN+ 6 OGRD

V-
OVER OUT OGRD
820pF 1%
LF351M CR509 11 9 OHMCAL
OHMCAL

4
GLASS S3 IN3
300V BYD17GSOD
Q312
R377 2N4392 10
VR306 VR305 D3 U320C
2.2M 10% .5W C575
10000pF PF
DDDDDF DG211DY
DIP
63V

R382 CR335 CR333 U330.5.15.17 BZV55C22 BZV55C22
2.2M 10% .5W ??? ???

C594 C593

1
Q324 10000pF PF 10000pF PF
+15V

IN1
2N4392 DIP DIP U323A
63V 63V
DG211DY
U334.9

D1

S1
Q? VR511
2N4392

16

10

13
MMBZ5226BL

7
8

9

3
R349

2

3
2.7K

VEE
VSS
VDD
B
A

X

Y
RGRD

MUX
C
U537A C
U325
TLP590A
R286 6 MC14052B
620 5% EN
CR536.3 1 2

X3
Y3

X2
Y2

X1
Y1

X0
Y0
A K
or R355,R356,R357 +15V

11
4

15
2

14
5

12
1
2.274K 1% PTF56
+15V +15V R356 U332

7

1
8
750 0.1% MC14052B U324
+
9.2mA ohm source 1 3 3
in Rev L
12 Y0 Y + 6
R359
R358
X0 MUX 2
-
R362 2.2M 10% .5W 5 13 AD707JR
7.15K 0.1% Y1 X
2.2M 10% .5W R333 980uA ohm source 14 -
2.2M 10% .5W CR331 X1

4

5
U310.13 1N3595 R365 78.7K 0.1% 2 10
89uA ohm source 15 Y2 A 9
R337 X2 B 16 -15V
VDD +15V
2.2M 10% .5W 4 8
U310.14 CR332 11 Y3 VSS 7

EN
1N3595 R366 X3 VEE
Q331.G 1M

6
7uA ohm source

CR324 CR323 R443 770nA ohm source
1N3595 1N3595 1K 5%
R354
100M 1% .5W
70nA ohm source

SIP Resistor network
D2 D2 R215.1 R215.2
1B1C1E SP4W
G G 500, 24.5K,0/1%