MCP3001 MCP3001 2.7V 10-Bit A/D Converter with SPI Serial Interface Features Package Types 10-bit resolution PDIP, MSOP, SOIC, TSSOP 1 LSB max DNL V 1 8 V REF DD 1 LSB max INL IN+ 2 7 CLK On-chip sample and hold IN 3 6 D OUT SPI serial interface (modes 0,0 and 1,1) CS/SHDN V 4 5 Single supply operation: 2.7V - 5.5V SS 200 ksps sampling rate at 5V 75 ksps sampling rate at 2.7V Illustration not to scale Low power CMOS technology Functional Block Diagram - 5 nA typical standby current, 2 A max - 500 A max active current at 5V V V SS DD V REF Industrial temp range: -40C to +85C 8-pin PDIP, SOIC, MSOP and TSSOP packages Applications DAC Sensor Interface Process Control Comparator Data Acquisition 10-Bit SAR IN+ Sample and Battery Operated Systems Hold IN- Description Shift Control Logic The Microchip Technology Inc. MCP3001 is a succes- Register sive approximation 10-bit A/D converter (ADC) with on- board sample and hold circuitry. The device provides a CS/SHDN CLK D OUT single pseudo-differential input. Differential Nonlinear- ity (DNL) and Integral Nonlinearity (INL) are both spec- ified at 1 LSB max. Communication with the device is done using a simple serial interface compatible with the SPI protocol. The device is capable of sample rates up to 200 ksps at a clock rate of 2.8 MHz. The MCP3001 operates over a broad voltage range (2.7V- 5.5V). Low current design permits operation with a typical standby current of only 5 nA and a typical active current of 400 A. The device is offered in 8-pin PDIP, MSOP, TSSOP and 150 mil SOIC packages. SPI is a trademark of Motorola Inc. 2007 Microchip Technology Inc. DS21293C-page 1MCP3001 1.0 ELECTRICAL PIN FUNCTION TABLE CHARACTERISTICS Name Function 1.1 Maximum Ratings* V +2.7V to 5.5V Power Supply DD V .........................................................................7.0V DD V Ground SS All inputs and outputs w.r.t. V ...... -0.6V to V +0.6V SS DD IN+ Positive Analog Input Storage temperature ..........................-65C to +150C IN- Negative Analog Input Ambient temp. with power applied .....-65C to +125C CLK Serial Clock ESD protection on all pins (HBM)........................> 4kV *Notice: Stresses above those listed under Maximum ratings D Serial Data Out OUT may cause permanent damage to the device. This is a stress CS/SHDN Chip Select/Shutdown Input rating only and functional operation of the device at those or any other conditions above those indicated in the operational V Reference Voltage Input REF listings of this specification is not implied. Exposure to maxi- mum rating conditions for extended periods may affect device reliability. ELECTRICAL CHARACTERISTICS All parameters apply at V = 5V, V = 0V, V = 5V, T = -40C to +85C, f = 200 ksps and f = 14*f , DD SS REF AMB SAMPLE CLK SAMPLE unless otherwise noted. Typical values apply for V = 5V, T =25C, unless otherwise noted. DD AMB Parameter Sym Min Typ Max Units Conditions Conversion Rate: Conversion Time t 10 clock CONV cycles Analog Input Sample Time t 1.5 clock SAMPLE cycles 200 ksps V = V = 5V Throughput Rate f SAMPLE DD REF 75 ksps V = V = 2.7V DD REF DC Accuracy: Resolution 10 bits Integral Nonlinearity INL 0.5 1 LSB Differential Nonlinearity DNL 0.25 1 LSB No missing codes over tem- perature Offset Error 1.5 LSB Gain Error 1 LSB Dynamic Performance: Total Harmonic Distortion THD -76 dB V = 0.1V to 4.9V 1 kHz IN Signal to Noise and Distortion SINAD 61 dB V = 0.1V to 4.9V 1 kHz IN (SINAD) Spurious Free Dynamic Range SFDR 80 dB V = 0.1V to 4.9V 1 kHz IN Reference Input: Voltage Range V 0.25 V V Note 2 REF DD Current Drain I 90 150 A REF 0.001 3 A CS = V = 5V DD Note 1: This parameter is guaranteed by characterization and not 100% tested. 2: See graph that relates linearity performance to V level. REF 3: Because the sample cap will eventually lose charge, clock rates below 10 kHz can affect linearity perfor- mance, especially at elevated temperatures. DS21293C-page 2 2007 Microchip Technology Inc.