PIN ASSIGNMENTS
External VREF+
Analog In
External VREF-
Ground
1
2
3
4
8
7
6
5
PIN FUNCTIONS
Name
Function
Analog Signal Input
Start Convert. A high-to-low transition on
this input begins the conversion cycle and
enables serial data output.
Clock that drives A/D conversion cycle and
the synchronous serial data output
Serial Data. Tri-state serial data output for
the A/D result driven by the CLOCK input
External voltage reference for top of refer-
ence ladder
External voltage reference for bottom of
reference ladder
Analog and Digital +3 V to +5 V
Power Supply Input
Analog and Digital Ground
VDD
Data Out
Analog In
Start Convert
Clock
Start Convert
Clock
Data Out
External V
REF
+
External V
REF
-
V
DD
GND
ORDERING INFORMATION
PART NUMBER
SPT7830SCS
SPT7830SIS
TEMPERATURE RANGE
0 to +70
°C
–40 to +85
°C
PACKAGE
8L SOIC
8L SOIC
Die*
SPT7830SCU
+25
°C
*Please see the die specification for guaranteed electrical performance.
SPT7830
8
12/29/99
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
