MCP3004_08 Datasheet, PDF (1/40 Pages) Microchip Technology – 2.7V 4-Channel/8-Channel 10-Bit A/D Converters with SPI Serial Interface

MCP3004/3008
2.7V 4-Channel/8-Channel 10-Bit A/D Converters
with SPI Serial Interface
Features
• 10-bit resolution
• ± 1 LSB max DNL
• ± 1 LSB max INL
• 4 (MCP3004) or 8 (MCP3008) input channels
• 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.
• 500 µA max. active current at 5V
• Industrial temp range: -40°C to +85°C
• Available in PDIP, SOIC and TSSOP packages
Applications
• Sensor Interface
• Process Control
• Data Acquisition
• Battery Operated Systems
Functional Block Diagram
V_REF
V_DD V_SS
CH0
CH1
CH7*
Input
Channel
Max
Sample
and
Hold
DAC
Comparator
10-Bit SAR
Control Logic
Shift
Register
CS/SHDN D_IN CLK D_OUT
* Note: Channels 4-7 are available on MCP3008 Only
Description
The Microchip Technology Inc. MCP3004/3008
devices are successive approximation 10-bit Analog-
to-Digital (A/D) converters with on-board sample and
hold circuitry. The MCP3004 is programmable to
provide two pseudo-differential input pairs or four
single-ended inputs. The MCP3008 is programmable
to provide four pseudo-differential input pairs or eight
single-ended inputs. Differential Nonlinearity (DNL)
and Integral Nonlinearity (INL) are specified at ±1 LSB.
Communication with the devices is accomplished using
a simple serial interface compatible with the SPI
protocol. The devices are capable of conversion rates
of up to 200 ksps. The MCP3004/3008 devices operate
over a broad voltage range (2.7V - 5.5V). Low-current
design permits operation with typical standby currents
of only 5 nA and typical active currents of 320 µA. The
MCP3004 is offered in 14-pin PDIP, 150 mil SOIC and
TSSOP packages, while the MCP3008 is offered in 16-
pin PDIP and SOIC packages.
Package Types
PDIP, SOIC, TSSOP
CH0 1
CH1 2
CH2 3
CH3 4
NC 5
NC 6
DGND 7
14 V_DD
13 V_REF
12 AGND
11 CLK
10 D_OUT
9 D_IN
8 CS/SHDN
PDIP, SOIC
CH0 1
CH1 2
CH2 3
CH3 4
CH4 5
CH5 6
CH6 7
CH7 8
16 V_DD
15 V_REF
14 AGND
13 CLK
12 D_OUT
11 D_IN
10 CS/SHDN
9 DGND
© 2008 Microchip Technology Inc.
DS21295D-page 1