Datasheet

ADS8323
SBAS224C –DECEMBER 2001–REVISED JANUARY 2010 www.ti.com
PIN ASSIGNMENTS
TERMINAL
NO NAME I/O
(1)
DESCRIPTION
1 DB15 DO Data Bit 15 (MSB)
2 DB14 DO Data Bit 14
3 DB13 DO Data Bit 13
4 DB12 DO Data Bit 12
5 DB11 DO Data Bit 11
6 DB10 DO Data Bit 10
7 DB9 DO Data Bit 9
8 DB8 DO Data Bit 8
9 DB7 DO Data Bit 7
10 DB6 DO Data Bit 6
11 DB5 DO Data Bit 5
12 DB4 DO Data Bit 4
13 DB3 DO Data Bit 3
14 DB2 DO Data Bit 2
15 DB1 DO Data Bit 1
16 DB0 DO Data Bit 0 (LSB)
17 BUSY DO High when a conversion is in progress.
18 +DV
DD
P Digital Power Supply, +5VDC.
19 DGND P Digital Ground
An external CMOS-compatible clock can be applied to the CLOCK input to synchronize the
20 CLOCK DI
conversion process to an external source.
21 CONVST DI Convert Start
22 RD DI Synchronization pulse for the parallel output.
Selects eight most significant bits (low) or eight least significant bits (high). Data valid on pins
23 BYTE DI
9-16.
24 CS DI Chip Select
25 –IN AI Inverting Input Channel
26 +IN AI Noninverting Input Channel
27 AGND P Analog Ground
28 +AV
DD
P Analog Power Supply, +5VDC.
29 NC — No connection
30 NC — No connection
31 REF
IN
AI 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
32 REF
OUT
AO
reference is used.
(1) AI is analog input, AO is analog output, DI is digital input, DO is digital output, and P is power-supply connection.
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