PIN ASSIGNMENTS
PIN FUNCTIONS
Name
AGND
VRHF
VRHS
VRLS
VRLF
VCAL
VIN
Function
28
27
26
25
24
23
22
21
1
2
3
4
5
6
7
8
9
D10
D9
AGND
Analog Ground
VRHF
Reference High Force
Reference High Sense
Reference Low Sense
Reference Low Force
Calibration Reference
Analog Input
VRHS
D8
N/C
VRLS
VRLF
D7
D6
D5
VIN
AGND
VCAL
OVDD
OGND
SOIC
AVDD
DVDD
DGND
CLK
Analog VDD
20 D4
19 D3
18 D2
17 D1
Digital VDD
AVDD 10
DVDD 11
Digital Ground
Input Clock ƒCLK = FS (TTL)
Output Enable
DGND
12
EN
D0–9
D10
Tri-State Data Output, (D0=LSB)
Tri-State Output Overrange
Data Valid Output
Digital Output Supply
Digital Output Ground
No Connect
CLK
13
D0
EN
16
15
14
DAV
DAV
OVDD
OGND
N/C
VRLF
1
2
3
4
5
6
7
8
24 D7
23 D6
22 D5
VIN
AGND
AGND
VCAL
OVDD
21
TQFP
20 OGND
19 D4
18 D3
17 D2
AVDD
AVDD
DVDD
ORDERING INFORMATION
PART NUMBER
SPT7855SCS
SPT7855SCT
SPT7855SIS
SPT7855SIT
TEMPERATURE RANGE
0 to +70 °C
PACKAGE TYPE
28L SOIC
32L TQFP
28L SOIC
32L TQFP
0 to +70 °C
–40 to +85 °C
–40 to +85 °C
SPT7855
11
5/25/01
CADEKA [ CADEKA MICROCIRCUITS LLC. ]
