... the analog plusTM compa
EXAR Corporation 48720 Kato Road, Fremont, CA 94538 Phone
PRELIMINARY
DVDD
CISOUT |
|
|
|
2 | TP1 | t | 1 |
g |
AGND
VDCEXT 
|
| U1 |
|
|
| 15 | VREF+ | DVDD | 1 |
C3 | C4 |
| DGND | 10 |
1uF | 0.1uF |
| AVDD | 20 |
AGND |
|
| AGND | 14 |
|
|
|
|
19 | RED | DB7/LD | 9 | |
| 8 | |||
18 |
| DB6/SDATA | 7 | |
| GRN | DB5/SCLK | 6 | |
17 |
| DB4 |
| |
| 5 | |||
| BLU | DB3 |
| |
| 4 | |||
|
| DB2 |
| |
|
| 3 | ||
|
| DB0DB1 |
| |
|
| 2 | ||
16 |
| 1211 | ||
VDCEXT ADCCLK | ||||
| ||||
|
| CLAMP |
| |
|
| SYNCH | 13 | |
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| C1 |
|
| C2 |
| |
|
|
|
|
|
| |||
0.1uF 0.01uF
AVDD
C5DGND
C6
0.1uF | 0.01uF |
AGND
DB7/LD
DB6/SDATA
DB5/SCLK
DB4
DB3
DB2
DB1
DB0
ADCCLK
SYNC
XRD9827
J1
POWERJACK
L1
10uH
C32
OPEN
DGND
|
|
|
|
|
| U2 |
|
|
|
|
| |||||||
|
|
| 1 |
|
|
|
|
|
|
|
|
| 3 |
|
|
| ||
|
|
| IN |
|
|
|
| OUT |
|
|
| |||||||
|
|
| C8 |
|
|
| GND |
|
|
|
|
| ||||||
|
|
| 0.22uF |
| 2 |
|
|
|
|
|
|
|
|
| ||||
|
|
|
|
|
|
|
|
|
|
|
| |||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| AGND |
|
|
|
|
|
|
|
|
|
|
| ||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
| DGND |
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| ||||
|
|
| C10 |
| 2 |
|
|
|
|
|
|
|
|
|
| |||
|
|
|
|
|
|
|
|
|
|
|
|
| ||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
| 0.22uF | GND |
|
|
|
|
|
| ||||||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
| 1 | IN |
|
|
| OUT |
| 3 |
|
|
| |||||
|
|
|
|
|
|
|
|
|
|
|
|
|
| |||||
|
|
|
|
| U3 |
|
|
|
|
|
|
|
| |||||
C9
0.1uF
C11
0.47uF
AVDD
L2 OPEN
DVDD
POWER SUPPLY
CIRCUITS
DVDD
|
|
| R3 |
|
|
| JP1 | GO TO LED ON THE | |||
|
|
|
|
|
|
|
|
|
| 1 | |
|
|
|
|
|
|
|
|
|
| CASE OF SCANNER | |
|
|
| 1K |
|
|
| 2 |
| |||
|
|
|
|
|
|
|
|
|
| HEADER 2 | |
|
|
|
|
|
|
|
|
|
|
|
|
| DGND |
|
|
|
|
|
H:\PROJECT\ORCADWIN\9827\9827REFB.DSN |
|
|
|
|
| |
|
|
|
|
|
|
|
Title | XRD9827 REFERENCE BOARD |
|
|
|
|
|
|
|
|
|
|
| |
|
|
|
|
|
|
|
Size | Document Number |
|
|
|
| Rev |
B | XRD9827REF |
|
|
|
| B |
|
|
|
|
|
| |
Date: | Thursday, July 23, 1998 | Sheet | 1 | of | 3 |
|
18
