MCP3201_08 Datasheet, PDF (1/36 Pages) Microchip Technology – 2.7V 12-Bit A/D Converter with SPI Serial Interface

MCP3201
2.7V 12-Bit A/D Converter with SPI Serial Interface
Features
• 12-bit resolution
• ±1 LSB max DNL
• ±1 LSB max INL (MCP3201-B)
• ±2 LSB max INL (MCP3201-C)
• 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 V_DD = 5V
• 50 ksps maximum sampling rate at V_DD = 2.7V
• Low power CMOS technology
• 500 nA typical standby current, 2 µA maximum
• 400 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
V_REF
V_DD V_SS
Description
The Microchip Technology Inc. MCP3201 device is a
successive approximation 12-bit Analog-to-Digital
(A/D) Converter with on-board sample and hold
circuitry. The device provides a single pseudo-differen-
tial input. Differential Nonlinearity (DNL) is specified at
±1 LSB, and Integral Nonlinearity (INL) is offered in
±1 LSB (MCP3201-B) and ±2 LSB (MCP3201-C)
versions. Communication with the device is done using
a simple serial interface compatible with the SPI
protocol. The device is capable of sample rates of up to
100 ksps at a clock rate of 1.6 MHz. The MCP3201
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
300 µA, respectively. The device is offered in 8-pin
MSOP, PDIP, TSSOP and 150 mil SOIC packages.
Package Types
MSOP, PDIP, SOIC, TSSOP
V_REF 1
IN+ 2
IN– 3
V_SS 4
8 V_DD
7 CLK
6 D_OUT
5 CS/SHDN
IN+ Sample
and
IN-
Hold
DAC
Comparator
12-Bit SAR
Control Logic
Shift
Register
CS/SHDN CLK
D_OUT
© 2008 Microchip Technology Inc.
DS21290E-page 1