Datasheet

ADS8322
www.ti.com SBAS215A –JULY 2001–REVISED JANUARY 2010
PIN ASSIGNMENTS
TERMINAL
NO NAME DESCRIPTION
1 DB15 Data Bit 15 (MSB)
2 DB14 Data Bit 14
3 DB13 Data Bit 13
4 DB12 Data Bit 12
5 DB11 Data Bit 11
6 DB10 Data Bit 10
7 DB9 Data Bit 9
8 DB8 Data Bit 8
9 DB7 Data Bit 7
10 DB6 Data Bit 6
11 DB5 Data Bit 5
12 DB4 Data Bit 4
13 DB3 Data Bit 3
14 DB2 Data Bit 2
15 DB1 Data Bit 1
16 DB0 Data Bit 0 (LSB)
17 BUSY High when a conversion is in progress.
18 V
D
+ Digital Power Supply, +5VDC.
19 DGND Digital Ground
An external CMOS-compatible clock can be applied to the CLOCK input to synchronize the conversion
20 CLOCK
process to an external source.
21 CONVST Convert Start
22 RD Synchronization pulse for the parallel output.
23 BYTE Selects eight most significant bits (low) or eight least significant bits (high). Data valid on pins 9-16.
24 CS Chip Select
25 –IN Inverting Input Channel
26 +IN Noninverting Input Channel
27 AGND Analog Ground
28 +V
A
Analog Power Supply, +5VDC.
29 NC No connection
30 NC No connection
31 REF
IN
Reference Input. When using the internal 2.5V reference, tie this pin directly to REF
OUT
.
Reference Output. A 0.1μF capacitor should be connected to this pin when the internal reference is
32 REF
OUT
used.
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