MCP3201 Datasheet, PDF (1/20 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
• 100ksps max. sampling rate at V_DD = 5V
• 50ksps max. sampling rate at V_DD = 2.7V
• Low power CMOS technology
- 500nA typical standby current, 2µA max.
- 400µA 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. MCP3201 is a succes-
sive approximation 12-bit Analog-to-Digital (A/D) Con-
verter with on-board sample and hold circuitry. The
device provides a single pseudo-differential input. Dif-
ferential 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 100ksps at a
clock rate of 1.6MHz. The MCP3201 operates over a
broad voltage range (2.7V - 5.5V). Low current design
permits operation with typical standby and active cur-
rents of only 500nA and 300µA, respectively. The
device is offered in 8-pin PDIP, TSSOP and 150mil
SOIC packages.
PACKAGE TYPES
PDIP
V_REF 1
IN+ 2
IN– 3
V_SS 4
SOIC, TSSOP
8 V_DD
7 CLK
6 D_OUT
5 CS/SHDN
V_REF
1
IN+ ²
IN– ³
V_SS ⁴
8
V_DD
7 CLK
6
D_OUT
5 _CS/SHDN
FUNCTIONAL BLOCK DIAGRAM
V_REF
V_DD V_SS
IN+ Sample
and
IN-
Hold
DAC
Comparator
12-Bit SAR
Control Logic
Shift
Register
CS/SHDN CLK
D_OUT
© 1999 Microchip Technology Inc.
Preliminary
DS21290B-page 1