13-81
NTN8250C/D Vocoder Board
Electrical Parts List
Notes:
1. For optimum performance, order replacement diodes, transistors, and circuit
modules by Motorola part number only.
2. When ordering crystals, specify carrier frequency, crystal frequency, crystal
type number, and Motorola part number.
3. Part value notations:
p=10
-12
n=10
-9
µ=10
-6
m=10
-3
k=10
3
M=10
6
4. ITEM refers to the component reference designator. SIDE refers to the location
of the component on the board; S1=Side 1, S2=Side 2.
5. THE NTN8250 Vocoder kits use an 8-layer printed circuit board.
ITEM
MOTOROLA
PART NUMBER
DESCRIPTION
CAPACITOR, Fixed: unless
otherwise stated
C401 thru 410 2113932K15 0.1µF
C411, 412 2113930F46 62pF
C413 2113932K15 0.1µF
C414 2113930F39 33pF
C415 2113930F46 62pF
C416 2113930F03 1pF
C417 2113931F17 470pF
C418 2113930F03 1pF
C419 2113930F25 8.2 pF
C420 2113743A23 .22µF
C421 2113930F03 1pF
C422 2113931F17 470pF
C423 2113930F34 20pF
C424 thru 433 2113932K15 0.1µF
C434 2113743A23 .22µF
C435 thru 440 2113932K15 0.1µF
C441, 442 2311049A42 3.3 µF
C443 2113932K15 0.1µF
C444, 445 2113932K15 Not Placed
C446 2113931F13 330pF (NTN8250D only)
DIODE: See Note 1.
CR402 4813825A06 PIN Diode, 35V
JUMPER:
JU401 0662057B47 Not Placed
JU402 0662057B47 0
JU403 0662057B47 0
COIL, RF:
unless otherwise stated
L401 2462587E71 1800nH Chip Inductor
RESISTOR; Ω:
R401 0662057A73 10K
R402 0662057A97 100K
R403 thru 407 0662057A73 10K
R408 0662057A97 100K
R409 0662057A93 68K
R410 thru 413 0662057A73 10K
R414 0662057B12 390K
R415 0662057A49 1K
R416 0662057B47 0
R417 0662057A63 3.9K
R418 0662057A73 10K
R419 0662057B22 1M
R420 0662057A57 2.2K
R421 thru 424 0662057A97 100K
R425, 426 0662057A73 10K
INTEGRATED CIRCUIT MODULE:
See Note 1.
U401 thru 403 5105462G87 32K X 8 DSP-SRAM
U404 5105625U73 256K X 8 FLASH ROM
U405 5105457W70 DSP (Digital Signal
Processor)
U406 5105457W19 ADSIC (ABACUS/DSP Support IC)
CRYSTAL: See Note 2
Y401 4805573W01 33 MHz Crystal
MISCELLANEOUS:
8405258Z04 PC Board (NTN8250C)
or 8405258Z05 PC Board (NTN8250D)
LAYER 1 (L1)
LAYER 2 (L2)
LAYER 3 (L3)
LAYER 4 (L4)
INNER LAYERS
LAYER 5 (L5)
LAYER 6 (L6)
MAEPF-18828-A
SIDE 1
SIDE 2
8-LAYER CIRCUIT BOARD DETAIL VIEWING
COPPER STEPS IN PROPER LAYER SEQUENCE
LAYER 7 (L7)
LAYER 8 (L8)
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