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MCP3208T-BI/ST Datasheet(PDF) 1 Page - Microchip Technology |
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MCP3208T-BI/ST Datasheet(HTML) 1 Page - Microchip Technology |
1 / 40 page © 2008 Microchip Technology Inc. DS21298E-page 1 MCP3204/3208 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 VDD = 5V • 50 ksps max. sampling rate at VDD = 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 Functional Block Diagram Description 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, 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. Package Types Comparator Sample and Hold 12-Bit SAR DAC Control Logic CS/SHDN VREF VSS VDD CLK DOUT Shift Register CH0 Channel Mux Input CH1 CH7* * Note: Channels 5-7 available on MCP3208 Only DIN VDD CLK DOUT 1 2 3 4 14 13 12 11 10 9 8 5 6 7 VREF DIN CH0 CH1 CH2 CH3 CS/SHDN DGND AGND NC VDD CLK DOUT 1 2 3 4 16 15 14 13 12 11 10 9 5 6 7 8 VREF DIN CS/SHDN DGND CH0 CH1 CH2 CH3 CH4 CH5 CH6 CH7 NC AGND PDIP, SOIC, TSSOP PDIP, SOIC 2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Serial Interface |
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