Texas Instruments VCA8500BOARD, User Manual

Page: 13 / 17

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7.3 Schematic
Printed-Circuit Board Layout, Bill of Materials, and Schematic
Table 1. Bill of Materials (continued)
Item Qty Mfg Mfg Part# Ref Des Description Value or Function
28 1 Vishay/Dale CRCW04021001F100 R195 RES, SMT, 0402 RES, SMT, 1k
Ω
, 1/16W, 1%, 100ppm
29 5 Vishay/Dale CRCW04024701F100 R140–R143, R185 RES, SMT, 0402 RES, SMT, 4.7 k
Ω
, 1/16W, 1%,
100ppm
30 20 Vishay/Dale CRCW040249R9F100 R5, R6, R23, R24, R43, R44, RES, SMT, 0402 RES, SMT, 49.9
Ω
, 1/16W, 1%,
R71, R72, R99, R100, R126, 100ppm
R137, R151, R159, R166,
R184, R190, R191, R198,
R207
31 16 Vishay/Dale CRCW04021001F100 R123, R125, R131, R135, RES, SMT, 0402 RES, SMT, 0402, 1k
Ω
, 1%, 1/16W
R145, R149, R156, R158,
R163, R165, R171, R183,
R192, R197, R204, R206
32 9 Panasonic ERJ-2RKF4020X R173–R181 RES, SMT, 0402 RES, SMT, 0402, 402
Ω
, 1%, 1/16W
33 10 Panasonic ERJ-2RKF6341X R1, R2, R11, R12, R37, R38, RES, SMT, 0402 RES, SMT, 0402, 6.34 k
Ω
, 1%, 1/16W
R61, R62, R89, R90
34 16 Vishay/Dale CRCW0402499RFKED R128, R129, R139, R144, RES, SMT, 0402 RES, SMT, 0402, 499
Ω
, 1%, 1/16W
R154, R155, R161, R162,
R168, R169, R188, R189,
R201, R202, R209, R210
35 9 1902D STANDOFFS Hex 4-40 With 1/4" 4-40 Screws
SPECIAL NOTES AND INSTRUCTIONS
Notes: 1) Line items 4, 5, 9, 12, 13, 23, 26B – Components are not installed.
2) Line items 24 and 25 – W1 Short all three pads. Short W2 and W3.
3) Line item 20B – U19 Use OPA820 in place of the OPA642
The schematic drawings appear on the following page.
SLOU216 – January 2008 VCA8500BOARD 13
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