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MCP3202 Datasheet, PDF (1/20 Pages) Microchip Technology – 2.7V Dual Channel 12-Bit A/D Converter with SPI Serial Interface
MCP3202
2.7V Dual Channel 12-Bit A/D Converter
with SPI® Serial Interface
FEATURES
• 12-bit resolution
• ±1 LSB max DNL
• ±1 LSB max INL (MCP3202-B)
• ±2 LSB max INL (MCP3202-C)
• Analog inputs programmable as single-ended or
pseudo-differential pairs
• On-chip sample and hold
• SPI® serial interface (modes 0,0 and 1,1)
• Single supply operation: 2.7V - 5.5V
• 100ksps max. sampling rate at VDD = 5V
• 50ksps max. sampling rate at VDD = 2.7V
• Low power CMOS technology
- 500nA typical standby current, 5µA max.
- 550µA max. active current at 5V
• Industrial temp range: -40°C to +85°C
• 8-pin PDIP SOIC and TSSOP packages
APPLICATIONS
• Sensor Interface
• Process Control
• Data Acquisition
• Battery Operated Systems
DESCRIPTION
The Microchip Technology Inc. MCP3202 is a succes-
sive approximation 12-bit Analog-to-Digital (A/D) Con-
verter with on-board sample and hold circuitry. The
MCP3202 is programmable to provide a single
pseudo-differential input pair or dual single-ended
inputs. Differential Nonlinearity (DNL) is specified at
±1 LSB, and Integral Nonlinearity (INL) is offered in
±1 LSB (MCP3202-B) and ±2 LSB (MCP3202-C) ver-
sions. Communication with the device is done using a
simple serial interface compatible with the SPI protocol.
The device is capable of conversion rates of up to
100ksps at 5V and 50ksps at 2.7V. The MCP3202
device operates over a broad voltage range (2.7V -
5.5V). Low current design permits operation with typi-
cal standby and active currents of only 500nA and
375µA, respectively. The MCP3202 is offered in 8-pin
PDIP, TSSOP and 150mil SOIC packages.
PACKAGE TYPES
PDIP
CS/SHDN 1
CH0 2
CH1 3
VSS 4
8
VDD/VREF
7 CLK
6
DOUT
5
DIN
SOIC, TSSOP
CS/SHDN 1
CH0 2
CH1 3
VSS
4
8
VDD/VREF
7 CLK
6
DOUT
5
DIN
FUNCTIONAL BLOCK DIAGRAM
VDD VSS
CH0
CH1
Input
Channel
Mux
Sample
and
Hold
DAC
Comparator
12-Bit SAR
Control Logic
Shift
Register
CS/SHDN DIN CLK
DOUT
© 1999 Microchip Technology Inc.
Preliminary
DS21034A-page 1
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