MCP3002_07 Datasheet, PDF (1/28 Pages) Microchip Technology – 2.7V Dual Channel 10-Bit A/D Converter with SPI™ Serial Interface

MCP3002
2.7V Dual Channel 10-Bit A/D Converter
with SPI™ Serial Interface
Features
• 10-bit resolution
• ±1 LSB max DNL
• ±1 LSB max INL
• 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
• 200 ksps max sampling rate at V_DD = 5V
• 75 ksps max sampling rate at V_DD = 2.7V
• Low power CMOS technology:
- 5 nA typical standby current, 2 µA max
- 550 µA max. 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
Description
The Microchip Technology Inc. MCP3002 is a succes-
sive approximation 10-bit Analog-to-Digital (A/D) Con-
verter with on-board sample and hold circuitry. The
MCP3002 is programmable to provide a single pseudo-
differential input pair or dual single-ended inputs. Differ-
ential Nonlinearity (DNL) and Integral Nonlinearity
(INL) are both specified at ±1 LSB. 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 200 ksps at 5V and 75 ksps
at 2.7V. The MCP3002 device operates over a broad
voltage range (2.7V - 5.5V). Low current design permits
operation with a typical standby current of 5 nA and a
typical active current of 375 µA. The MCP3002 is
offered in 8-pin MSOP, PDIP, TSSOP and 150 mil
SOIC packages.
Package Types
MSOP, PDIP, SOIC, TSSOP
CS/SHDN 1
8
CH0 2
7
CH1 3
6
V_SS 4
5
V_DD/V_REF
CLK
D_OUT
D_IN
Functional Block Diagram
V_DD V_SS
CH0
CH1
Input
Channel
Mux
Sample
and
Hold
DAC
Comparator
10-Bit SAR
Control Logic
Shift
Register
CS/SHDN D_IN CLK
D_OUT
© 2007 Microchip Technology Inc.
DS21294C-page 1