SPT
8
9/8/98
SPT7870
PIN FUNCTIONS
NAME
I/O
DESCRIPTION
VIN
I
Analog Input
D0-D9
O
Digital Output Data (D0 = LSB)
D10
O
Overflow
CLK
I
Clock (Internal Pull-Down to Ground)
NCLK
I
Inverted Clock
(Internal Pull-Down to -1.3 V)
LINV
I
Invert Least Significant Bits (D0-D8);
CMOS/TTL Level; Invert=+5 V;
Internal Pull-Down to Ground
MINV
I
Invert MSB (D9);
CMOS/TTL Level; Invert=+5 V;
Internal Pull-Down to Ground
VT
N/A
Internal Top Reference Decoupling
(+1 V typical)
VM
N/A
Internal Mid-Point Reference Decoupling
(0 V typical)
VB
N/A
Internal Bottom Reference Decoupling
(-1 V typical)
VCC
I
+5 V Analog Supply
VEE
I
-5.2 V Supply
N/C
-
Not Connected
AGND
I
Analog Ground
DGND
I
Digital Ground
ORDERING INFORMATION
PART NUMBER
TEMPERATURE RANGE
PACKAGE
SPT7870SIQ
-40 to +85
°C
44L Cerquad
SPT7870SCU
+25
°C
Die*
*Please see the die specification for guaranteed electrical performance.
VB
N/C
N/C
VM
N/C
VIN
N/C
N/C
VT
VCC
VCC
DØ
D1
D2
D3
D4
D5
D6
D7
D8
D9
D1Ø
1
2
3
4
5
6
7
8
9
10
11
33
32
31
30
29
28
27
26
25
24
23
44L Cerquad
PIN ASSIGNMENTS
Signal Processing Technologies, Inc. reserves the right to change products and specifications without notice. Permission is hereby expressly
granted to copy this literature for informational purposes only. Copying this material for any other use is strictly prohibited.
WARNING - LIFE SUPPORT APPLICATIONS POLICY - SPT products should not be used within Life Support Systems without the specific
written consent of SPT. A Life Support System is a product or system intended to support or sustain life which, if it fails, can be reasonably
expected to result in significant personal injury or death.
Signal Processing Technologies believes that ultrasonic cleaning of its products may damage the wire bonding, leading to device
failure. It is therefore not recommended, and exposure of a device to such a process will void the product warranty.
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