PIN ASSIGNMENTS
PIN FUNCTIONS
Name Function
GND
V
DD
OGND
OV
DD
REF
L
Analog ground
Analog +5 V
Output ground
Supply voltage for digital outputs 3 V/5 V
Reference pin low, input for external
reference, bypass with capacitor (10 µF)
when internal reference is selected.
Reference pin high, input for external
reference, bypass with capacitor (10 µF)
when internal voltage is selected.
2.5 V common mode voltage reference output
Non-inverted analog input
Inverted analog input
Clock input pin
Complement of clock input pin, internally
biased to 1.5 V; if single-ended clock is used,
bypass to GND with 10 µF
Digital outputs; D0 = LSB; 3 V/5 V compatible
Out-of-range bit; 3 V/5 V compatible
GND
V
DD
REF
L
REF
H
EXT/INT
V
CM
GND
V
DD
V
IN
1
2
3
4
5
6
7
8
9
28
27
26
25
24
23
D0
D1
D2
D3
D4
OGND
OV
DD
OGND
OV
DD
D5
D6
D7
D8
D9 (MSB)
REF
H
SPT7864
28L SSOP
22
21
20
19
18
17
16
15
V
CM
V
IN
V
IN
CLK
CLK
V
IN
10
Sleep
11
CLK
12
CLK
13
OR
14
D0–D9
OR
EXT/INT EXT/INT = 1, external reference used; internal
reference powered down
EXT/INT = 0, internal reference used;
internally pulled down
Sleep
Sleep = 1, normal operation; internally pulled
up
Sleep = 0, powered-down mode
ORDERING INFORMATION
PART NUMBER
SPT7864SCR
TEMPERATURE RANGE
0 to +70 °C
PACKAGE TYPE
28L SSOP
SPT7864
8
11/20/01
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
