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The Microchip Technology Inc. MCP3204/3208 devices are successive approximation 12-bit Analog- to-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, and Integral Nonlinearity (INL) is offered in ±1 LSB (MCP3204/3208-B) and ±2 LSB (MCP3204/3208-C) versions. Communication with the devices is done using a simple serial interface compatible with the SPI protocol. The devices are capable of conversion rates of up to 100ksps. 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 500nA and 320µA, respectively. The MCP3204 is offered in 14-pin PDIP, 150mil SOIC and TSSOP packages, and the MCP3208 is offered in 16-pin PDIP and SOIC packages.
MCP3208 Maximum Ratings
VDD.........................................................................7.0V All inputs and outputs w.r.t. VSS ...... -0.6V to VDD +0.6V Storage temperature ..........................-65 to +150 Ambient temp. with power applied......-65 to +125 Soldering temperature of leads (10 seconds) ..+300 ESD protection on all pins...................................> 4kV
MCP3208 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 • 100ksps max. sampling rate at VDD = 5V • 50ksps max. sampling rate at VDD = 2.7V • Low power CMOS technology - 500 nA typical standby current, 2µA max. - 400 µA max. active current at 5V • Industrial temp range: -40 to +85 • Available in PDIP, SOIC and TSSOP packages
MCP3208 Typical Application
• Sensor Interface • Process Control • Data Acquisition • Battery Operated Systems