MCP3204-CI/ST Microchip

MCP3204 MCP3208 MCP3204/3208 2.7V 4-Channel/8-Channel 12-Bit A/D Converters with SPI Serial Interface Features Description 12-bit resolution The Microchip Technology Inc. MCP3204/3208 devices are successive approximation 12-bit Analog- 1 LSB max DNL to-Digital (A/D) Converters with on-board sample and 1 LSB max INL (MCP3204/3208-B) hold circuitry. The MCP3204 is programmable to 2 LSB max INL (MCP3204/3208-C) provide two pseudo-differential input pairs or four 4 (MCP3204) or 8 (MCP3208) input channels single-ended inputs. The MCP3208 is programmable Analog inputs programmable as single-ended or to provide four pseudo-differential input pairs or eight pseudo-differential pairs single-ended inputs. Differential Nonlinearity (DNL) is specified at 1 LSB, while Integral Nonlinearity (INL) is On-chip sample and hold offered in 1LSB (MCP3204/3208-B) and 2LSB SPI serial interface (modes 0,0 and 1,1) (MCP3204/3208-C) versions. Single supply operation: 2.7V - 5.5V Communication with the devices is accomplished using = 5V 100 ksps max. sampling rate at V DD a simple serial interface compatible with the SPI 50 ksps max. sampling rate at V = 2.7V DD protocol. The devices are capable of conversion rates Low power CMOS technology: of up to 100 ksps. The MCP3204/3208 devices operate - 500 nA typical standby current, 2 A max. over a broad voltage range (2.7V - 5.5V). Low current - 400 A max. active current at 5V design permits operation with typical standby and active currents of only 500nA and 320A, Industrial temp range: -40C to +85C respectively. The MCP3204 is offered in 14-pin PDIP, Available in PDIP, SOIC and TSSOP packages 150 mil SOIC and TSSOP packages. The MCP3208 is offered in 16-pin PDIP and SOIC packages. Applications Sensor Interface Package Types Process Control PDIP, SOIC, TSSOP Data Acquisition CH0 1 14 V DD Battery Operated Systems CH1 13 2 V REF CH2 3 12 AGND CH3 11 CLK 4 Functional Block Diagram NC 5 10 D OUT NC 9 D 6 IN V V DD SS DGND 7 8 CS/SHDN V REF PDIP, SOIC CH0 CH1 Input CH0 1 16 V Channel DD DAC Mux CH1 2 15 V REF CH7* CH2 3 14 AGND Comparator CH3 4 13 CLK CH4 5 12 D 12-Bit SAR OUT Sample CH5 6 11 D IN and Hold CH6 7 10 CS/SHDN CH7 8 9 DGND Shift Control Logic Register CS/SHDND CLK D IN OUT * Note: Channels 5-7 available on MCP3208 Only 2008 Microchip Technology Inc. DS21298E-page 1MCP3204/3208 Notice: Stresses above those listed underMaximum 1.0 ELECTRICAL Rating may cause permanent damage to the device. This is CHARACTERISTICS 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 Absolute Maximum Ratings to maximum rating conditions for extended periods may affect V ...................................................................................7.0V device reliability. DD All inputs and outputs w.r.t. V ............... -0.6V to V +0.6V SS DD Storage temperature .....................................-65C to +150C Ambient temp. with power applied ................-65C to +125C Soldering temperature of leads (10 seconds) .............+300C ESD protection on all pins.............................................> 4 kV ELECTRICAL SPECIFICATIONS Electrical Characteristics: Unless otherwise noted, all parameters apply at V = 5V, V = 0V, V = 5V, DD SS REF T = -40C to +85C,f = 100 ksps and f = 20*f A SAMPLE CLK SAMPLE Parameters Sym Min Typ Max Units Conditions Conversion Rate Conversion Time t 12 clock CONV cycles 1.5 clock Analog Input Sample Time t SAMPLE cycles Throughput Rate f 100 ksps V = V = 5V SAMPLE DD REF 50 ksps V = V = 2.7V DD REF DC Accuracy Resolution 12 bits Integral Nonlinearity INL 0.75 1 LSB MCP3204/3208-B 1.0 2 MCP3204/3208-C Differential Nonlinearity DNL 0.5 1 LSB No missing codes over-temperature Offset Error 1.25 3 LSB Gain Error 1.25 5 LSB Dynamic Performance Total Harmonic Distortion -82 dB V = 0.1V to 4.9V 1 kHz IN Signal to Noise and Distortion 72 dBV = 0.1V to 4.9V 1 kHz IN (SINAD) Spurious Free Dynamic 86 dBV = 0.1V to 4.9V 1 kHz IN Range Reference Input Voltage Range 0.25 V V Note 2 DD Current Drain 100 150 A 0.001 3.0 A CS = V = 5V DD Analog Inputs Input Voltage Range for CH0- V V V SS REF CH7 in Single-Ended Mode Input Voltage Range for IN+ in IN- V +IN- REF pseudo-differential Mode Note 1: This parameter is established by characterization and not 100% tested. 2: See graphs that relate linearity performance to V levels. REF 3: Because the sample cap will eventually lose charge, effective clock rates below 10 kHz can affect linearity performance, particularly at elevated temperatures. See Section 6.2 Maintaining Minimum Clock Speed, Maintaining Minimum Clock Speed, for more information. DS21298E-page 2 2008 Microchip Technology Inc.