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| MCP3202_08 Datasheet, PDF (1/32 Pages) Microchip Technology – 2.7V Dual Channel 12-Bit A/D Converter with SPI Serial Interface | |||
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MCP3202
2.7V Dual Channel 12-Bit A/D Converter
with SPI Serial Interface
Features
⢠12-Bit resolution
⢠±1 LSB maximum DNL
⢠±1 LSB maximum INL (MCP3202-B)
⢠±2 LSB maximum 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
⢠100 ksps maximum sampling rate at VDD = 5V
⢠50 ksps maximum sampling rate at VDD = 2.7V
⢠Low power CMOS technology
⢠500 nA typical standby current, 5 µA maximum
⢠550 µA maximum active current at 5V
⢠Industrial temp range: -40°C to +85°C
⢠8-pin MSOP, PDIP, SOIC and TSSOP packages
Applications
⢠Sensor Interface
⢠Process Control
⢠Data Acquisition
⢠Battery Operated Systems
Functional Block Diagram
VDD VSS
Description
The Microchip Technology Inc. MCP3202 is a
successive approximation 12-bit Analog-to-Digital
(A/D) Converter 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) versions. 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 100 ksps at 5V and 50 ksps
at 2.7V. The MCP3202 device operates over a broad
voltage range (2.7V - 5.5V). Low-current design
permits operation with typical standby and active
currents of only 500 nA and 375 µA, respectively. The
MCP3202 is offered in 8-pin MSOP, PDIP, TSSOP and
150 mil SOIC packages.
Package Types
PDIP, MSOP, SOIC, TSSOP
CS/SHDN 1
CH0 2
CH1 3
VSS 4
8 VDD/VREF
7 CLK
6 DOUT
5 DIN
CH0
CH1
Input
Channel
Mux
DAC
Comparator
Sample
and
Hold
Control Logic
12-Bit SAR
Shift
Register
CS/SHDN DIN CLK DOUT
© 2008 Microchip Technology Inc.
DS21034E-page 1
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