MCP3201-BI/MS MICROCHIP [Microchip Technology], MCP3201-BI/MS Datasheet - Page 15

• Manufacturer Part Number: MCP3201-BI/MS
• Description: 2.7V 12-Bit A/D Converter with SPI Serial Interface
• Manufacturer: MICROCHIP [Microchip Technology]

3.0
The descriptions of the pins are listed in
Additional descriptions of the device pins follows.
TABLE 3-1:
3.1
Positive analog input. This input can vary from IN- to
V
3.2
Negative analog input. This input can vary ±100 mV
from V
3.3
The CS/SHDN pin is used to initiate communication
with the device when pulled low and will end a
conversion and put the device in low power standby
when pulled high. The CS/SHDN pin must be pulled
high between conversions.
© 2008 Microchip Technology Inc.
REF
MSOP, PDIP, SOIC,
+ IN-.
SS
MCP3201
PIN DESCRIPTIONS
Positive Analog Input (IN+)
Negative Analog Input (IN-)
.
Chip Select/Shutdown (CS/SHDN)
TSSOP
1
2
3
4
5
6
7
8
PIN FUNCTION TABLE
CS/SHDN
Symbol
D
V
Table
CLK
V
V
IN+
IN-
REF
OUT
DD
SS
3-1.
Reference Voltage Input
Positive Analog Input
Negative Analog Input
Ground
Chip Select/Shutdown Input
Serial Data Out
Serial Clock
+2.7V to 5.5V Power Supply
3.4
The SPI clock pin is used to initiate a conversion and to
clock out each bit of the conversion as it takes place.
See Section 6.2 “Maintaining Minimum Clock
Speed” for constraints on clock speed.
3.5
The SPI serial data output pin is used to shift out the
results of the A/D conversion. Data will always change
on the falling edge of each clock as the conversion
takes place.
Serial Clock (CLK)
Serial Data Output (D
Description
MCP3201
DS21290E-page 15
OUT
)