MCP3002_08 Datasheet, PDF (1/34 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 maximum DNL
• ±1 LSB maximum 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 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
V_DD V_SS
Description
The Microchip Technology Inc. MCP3002 is a
successive approximation 10-bit Analog-to-Digital
(A/D) Converter with on-board sample and hold
circuitry. The MCP3002 is programmable to provide a
single pseudo-differential input pair or dual single-
ended inputs. Differential 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
CH0 ₂
CH1 3
V_SS 4
8
V_DD/V_REF
7 CLK
6
D_OUT
5
D_IN
CH0
CH1
Input
Channel
Mux
Sample
and
Hold
DAC
Comparator
10-Bit SAR
Control Logic
Shift
Register
CS/SHDN D_IN CLK
D_OUT
© 2008 Microchip Technology Inc.
DS21294D-page 1