Replaceable Parts 16-13
U426,U608 IC, CMOS ANAL SWITCH, DG444DY, IC-866
U427,U428,U430 INTEGRATED CIRCUIT SMT IC-1278
U429,U629 IC, INSTRUMENTATION AMPLIFIER,
IN
A128UA
IC-1125
U431,U432,U443,U631,U632 IC, VOLT COMPARATOR, LM393D IC-775
U433,U621 INTEGRATED CIRCUIT IC-1331
U434,U624 IC, DUAL OP-AMP, LF353M IC-842
U437,U442,U637,U642 IC, VOLTAGE REFERENCE, SOIC8 IC-1065
U440,U622 INTEGRATED CIRCUIT SMT IC-1328
U441,U641 POWER OUTPUT STAGE AUTOMATIC
BIAS SYSTEM
IC-1159
U445 IC, VOLTAGE REGULATOR, LM317T IC-317
U446,U646 IC, POS NAND GATES/INVERT, 74HCT14 IC-656
U447,U647 12-BIT VOLTAGE OUTPUT DAC IC-1130
U450,U650 SYNCHRONOUS DC/DC CONTROLLER IC-1255
U451,U651 DUAL FET OPAMP IC-1128
U453 IC, CMOS ANALOG SWITCH, DG211DY IC-768
U454 IC, HI-SPEED BIFET OP-AMP, AD711JR IC-894
U456,U626 IC, DUAL D-TYPE F/F, 74HC74 IC-773
U458 INTEGRATED CIRCUIT IC-1302
U459 INTEGRATED CIRCUIT IC-1299
U460 TINYLOGIC CMOS INVERTER IC-1282
U463,U467 INTEGRATED CIRCUIT SMT IC-1298
U611 DUAL ±15V ZERO DRIFT OPAMP IC-1126
U620 DUAL 12-BIT MDAC IC-1122
U645 IC, VOLTAGE REG, LM317M IC-846
VR400,VR401,VR600,VR601 DIODE, ZENER, 6.2V, MMSZ6V2 DZ-97
VR402,VR602 DIODE, ZENER, 6.44V,1N4577AGED DZ-58
VR403,VR603 DIODE, ZENER, 22V, BZX84C22 DZ-86
VR404,VR604 DIODE, ZENER DZ-121
VR405,VR406,VR605,VR606,VR607 DIODE, ZENER, 12V, MMSZ12T1 DZ-112
VR407 DIODE, ZENER, 3V, CMPZ4619 DZ-118
Y400,Y600 OSCILLATOR, HIGH SPEED, CMOS,
12MHZ
CR-37
Table 16-2
Model 2306 analog board parts list (cont.)
Circuit designation Description Keithley part no.
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