MCP3204/3208

2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Serial Interface

Features

• 12-bit resolution

• ± 1 LSB max DNL

• ± 1 LSB max INL (MCP3204/3208-B)

• ± 2 LSB max INL (MCP3204/3208-C)

• 4 (MCP3204) or 8 (MCP3208) 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

• 100 ksps max. sampling rate at V_DD = 5V

• 50 ksps max. sampling rate at V_DD = 2.7V

• Low power CMOS technology:

- 500 nA typical standby current, 2 µA max.

- 400 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

Description

The Microchip Technology Inc. MCP3204/3208 devices are successive approximation 12-bit Analogto-Digital (A/D) Converters with on-board sample and hold circuitry. The MCP3204 is programmable to provide two pseudo-differential input pairs or four single-ended inputs. The MCP3208 is programmable to provide four pseudo-differential input pairs or eight single-ended inputs. Differential Nonlinearity (DNL) is specified at ±1 LSB, while Integral Nonlinearity (INL) is offered in ±1 LSB (MCP3204/3208-B) and ±2 LSB (MCP3204/3208-C) versions.

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 100 ksps. The MCP3204/3208 devices operate 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 320 µA, respectively. The MCP3204 is offered in 14-pin PDIP, 150 mil SOIC and TSSOP packages. The MCP3208 is offered in 16-pin PDIP and SOIC packages.

Functional Block Diagram

Absolute Maximum Ratings†

V_DD...................................................................................7.0V

All inputs and outputs w.r.t. V_SS ............... -0.6V to V_DD +0.6V

Storage temperature .....................................-65°C to +150°C

Ambient temp. with power applied ................-65°C to +125°C

Soldering temperature of leads (10 seconds) .............+300°C

ESD protection on all pins.............................................> 4 kV

†Notice: Stresses above those listed under "Maximum Ratings" may cause permanent damage to the device. This is a stress rating only and functional operation of the device at those or any other conditions above those indicated in the operation listings of this specification is not implied. Exposure to maximum rating conditions for extended periods may affect device reliability.

Package Types

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