MCP3204-CI/ST Microchip Technology, MCP3204-CI/ST Datasheet - Page 15

• Manufacturer Part Number: MCP3204-CI/ST
• Description: IC ADC 12BIT 2.7V 4CH SPI14TSSOP
• Manufacturer: Microchip Technology

Specifications of MCP3204-CI/ST

• Data Interface: Serial, SPI™
• Number Of Bits: 12
• Sampling Rate (per Second): 100k
• Number Of Converters: 1
• Voltage Supply Source: Single Supply
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP (0.173", 4.40mm Width)
• Resolution (bits): 12bit
• Sampling Rate: 100kSPS
• Input Channel Type: Pseudo Differential, Single Ended
• Supply Voltage Range - Analog: 2.7V To 5.5V
• Supply Current: 320µA
• Package: 14TSSOP
• Resolution: 12 Bit
• Architecture: SAR
• Number Of Adcs: 1
• Number Of Analog Inputs: 4|2
• Digital Interface Type: Serial (4-Wire, SPI)
• Input Type: Voltage
• Polarity Of Input Voltage: Unipolar
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

3.0
The descriptions of the pins are listed in
TABLE 3-1:
3.1
Digital ground connection to internal digital circuitry.
3.2
Analog ground connection to internal analog circuitry.
3.3
Analog inputs for channels 0 - 7 for the multiplexed
inputs. Each pair of channels can be programmed to be
used as two independent channels in single-ended
mode or as a single pseudo-differential input, where
one channel is IN+ and one channel is IN. See
Section 4.1 “Analog Inputs”, “Analog Inputs”, and
Section 5.0 “Serial communications”, “Serial Com-
munications”, for information on programming the
channel configuration.
3.4
The SPI clock pin is used to initiate a conversion and
clock out each bit of the conversion as it takes place.
See Section 6.2 “Maintaining Minimum Clock
Speed”, “Maintaining Minimum Clock Speed”, for con-
straints on clock speed.
© 2008 Microchip Technology Inc.
PDIP, SOIC,
MCP3204
TSSOP
5, 6
—
—
—
—
10
11
12
13
14
PIN DESCRIPTIONS
Digital Ground (DGND)
Analog Ground (AGND)
Analog Inputs (CH0 - CH7)
Serial Clock (CLK)
1
2
3
4
7
8
9
PIN FUNCTION TABLE
PDIP, SOIC
MCP3208
10
12
13
14
15
16
11
—
1
2
3
4
5
6
7
8
9
Table
CS/SHDN
Symbol
3-1.
DGND
AGND
D
V
CH0
CH1
CH2
CH3
CH4
CH5
CH6
CH7
CLK
V
D
NC
OUT
REF
DD
IN
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Analog Input
Digital Ground
Chip Select/Shutdown Input
Serial Data In
Serial Data Out
Serial Clock
Analog Ground
Reference Voltage Input
+2.7V to 5.5V Power Supply
No Connection
3.5
The SPI port serial data input pin is used to load
channel configuration data into the device.
3.6
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.
3.7
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.
Serial Data Input (D
Serial Data Output (D
Chip Select/Shutdown (CS/SHDN)
MCP3204/3208
Definition
IN
)
DS21298E-page 15
OUT
)