856 Adafruit

MCP3004 MCP3008 MCP3004/3008 2.7V 4-Channel/8-Channel 10-Bit A/D Converters with SPI Serial Interface Features Description 10-bit resolution The Microchip Technology Inc. MCP3004/3008 devices are successive approximation 10-bit Analog- 1 LSB max DNL to-Digital (A/D) converters with on-board sample and 1 LSB max INL hold circuitry. The MCP3004 is programmable to 4 (MCP3004) or 8 (MCP3008) input channels provide two pseudo-differential input pairs or four Analog inputs programmable as single-ended or single-ended inputs. The MCP3008 is programmable pseudo-differential pairs to provide four pseudo-differential input pairs or eight On-chip sample and hold single-ended inputs. Differential Nonlinearity (DNL) and Integral Nonlinearity (INL) are specified at 1 LSB. SPI serial interface (modes 0,0 and 1,1) Communication with the devices is accomplished using Single supply operation: 2.7V - 5.5V a simple serial interface compatible with the SPI 200 ksps max. sampling rate at V =5V DD protocol. The devices are capable of conversion rates =2.7V 75 ksps max. sampling rate at V DD of up to 200 ksps. The MCP3004/3008 devices operate Low power CMOS technology over a broad voltage range (2.7V - 5.5V). Low-current 5 nA typical standby current, 2 A max. design permits operation with typical standby currents of only 5 nA and typical active currents of 320 A. The 500 A max. active current at 5V MCP3004 is offered in 14-pin PDIP, 150 mil SOIC and Industrial temp range: -40C to +85C TSSOP packages, while the MCP3008 is offered in 16- Available in PDIP, SOIC and TSSOP packages pin PDIP and SOIC packages. Applications Package Types Sensor Interface PDIP, SOIC, TSSOP Process Control Data Acquisition CH0 1 14 V DD CH1 2 13 V Battery Operated Systems REF CH2 3 12 AGND CLK CH3 4 11 Functional Block Diagram NC 5 10 D OUT NC D 6 9 IN V V SS DGND 7 8 DD CS/SHDN V REF CH0 PDIP, SOIC CH1 Input Channel CH0 1 16 V DAC DD Max CH1 2 15 V REF CH7* CH2 3 14 AGND Comparator CH3 4 13 CLK 10-Bit SAR CH4 5 12 D Sample OUT and CH5 6 11 D IN Hold CH6 7 10 CS/SHDN CH7 8 9 DGND Shift Control Logic Register CS/SHDN D CLK D IN OUT * Note: Channels 4-7 are available on MCP3008 Only 2008 Microchip Technology Inc. DS21295D-page 1MCP3004/3008 NOTES: DS21295D-page 2 2008 Microchip Technology Inc.