MCP3301 MCP3301 13-Bit Differential Input, Low Power A/D Converter with SPI Serial Interface Features General Description Full Differential Inputs The MCP3301 13-bit analog-to-digital (A/D) converter features full differential inputs and low power consump- 1 LSB max DNL tion in a small package that is ideal for battery-powered 1 LSB max INL (MCP3301-B) systems and remote data acquisition applications. 2 LSB max INL (MCP3301-C) Incorporating a successive approximation architecture Single supply operation: 4.5V to 5.5V with on-board sample and hold circuitry, the 13-bit A/D 100 ksps sampling rate with 5V supply voltage converter is specified to have 1 LSB Differential Non- 50 nA typical standby current, 1 A max linearity (DNL) and 1 LSB Integral Nonlinearity (INL) 450 A max active current at 5V for B-grade devices and 2 LSB for C-grade devices. The industry-standard SPI serial interface enables 13- Industrial temp range: -40C to +85C bit A/D converter capability to be added to any PIC 8-pin MSOP, PDIP, and SOIC packages microcontroller. Mixed Signal PICtail Demo Board (P/N: The MCP3301 features a low current design that per- MXSIGDM) compatible mits operation with typical standby and active currents Applications of only 50 nA and 300 A, respectively. The device is capable of conversion rates of up to 100 ksps with Remote Sensors tested specifications over a 4.5V to 5.5V supply range. Battery-operated Systems The reference voltage can be varied from 400 mV to Transducer Interface 5V, yielding input-referred resolution between 98 V and 1.22 mV. Functional Block Diagram The MCP3301 is available in 8-pin PDIP, 150 mil SOIC, and MSOP packages. The full differential inputs of this V V V device enable a wide variety of signals to be used in REF DD SS applications such as remote data acquisition, portable instrumentation, and battery-operated applications. Package Types CDAC MSOP, PDIP, SOIC Comparator V V - REF 1 8 DD IN+ Sample & Hold 13-Bit SAR IN(+) CLK 2 7 IN- Circuits + IN(-) D 3 6 OUT V 4 5 CS/SHDN SS Shift Control Logic Register CS/SHDN CLK D OUT 2001-2011 Microchip Technology Inc. DS21700E-page 1MCP3301 *Notice: Stresses above those listed under Maximum 1.0 ELECTRICAL ratings 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 Maximum Ratings* operational listings of this specification is not implied. Exposure to maximum rating conditions for extended periods V ...................................................................................7.0V DD may affect device reliability. All inputs and outputs w.r.t. V ............... -0.3V to V +0.3V SS DD Storage temperature .....................................-65C to +150C Ambient temperature with power applied......-65C to +125C Maximum Junction Temperature .................................. 150C ESD protection on all pins (HBM) .................................> 4 kV ELECTRICAL CHARACTERISTICS Electrical Characteristics: Unless otherwise noted, all parameters apply at V = 5V, V = 0V, and V = 5V. Full differential DD SS REF input configuration (Figure 1-5) with fixed common mode voltage of 2.5V. All parameters apply over temperature with T = -40C to +85C (Note 7). Conversion speed (F is 100 ksps with F = 17*F AMB SAMPLE) CLK SAMPLE Parameter Symbol Min Typ Max Units Conditions Conversion Rate Maximum Sampling Frequency 100 ksps See F specifications (Note 8) F SAMPLE CLK Conversion Time t 13 CLK CONV periods Acquisition Time t 1.5 CLK ACQ periods DC Accuracy Resolution 12 data bits + sign bits Integral Nonlinearity INL 0.5 1 LSB MCP3301-B 1 2 MCP3301-C Differential Nonlinearity DNL 0.5 1 LSB Monotonic with no missing codes over temperature Positive Gain Error -3 -0.75 +2 LSB Negative Gain Error -3 -0.5 +2 LSB Offset Error -3 +3 +6 LSB Dynamic Performance Total Harmonic Distortion THD -91 dB Note 3 Signal to Noise and Distortion SINAD 78 dB Note 3 Spurious Free Dynamic Range SFDR 92 dB Note 3 Common-Mode Rejection CMRR 79 dB Note 6 Power Supply Rejection PSR 74 dB Note 4 Note 1: This specification is established by characterization and not 100% tested. 2: See characterization graphs that relate converter performance to V level. REF 3: V = 0.1V to 4.9V 1 kHz. IN 4: V = 5V DC 500 mV 1 kHz, see test circuit Figure 1-4. DD P-P 5: Maximum clock frequency specification must be met. 6: V = 400 mV, V = 0.1V to 4.9V 1 kHz REF IN 7: MSOP devices are only specified at 25C and +85C. 8: For slow sample rates, see Section 5.2.1 Maintaining Minimum Clock Speed for limitations on clock frequency. 9: 4.5V - 5.5V is the supply voltage range for specified performance DS21700E-page 2 2001-2011 Microchip Technology Inc.