MCP33151D/41D-XX 1 Msps/500 kSPS, 14/12-Bit Differential Input SAR ADC Features Typical Applications Sample Rate (Throughput): High-Precision Data Acquisition - MCP33151D/41D-10: 1 Msps Medical Instruments - MCP33151D/41D-05: 500 kSPS Test Equipment 14/12-Bit Resolution with No Missing Codes Electric Vehicle Battery Management Systems No Latency Output Motor Control Applications Wide Operating Voltage Range: Switch-Mode Power Supply Applications - Analog supply voltage (AV ): 1.8V Battery-Powered Equipment DD - Digital input/output interface voltage (DV ): IO System Design Supports 1.7-5.5V The MCP331x1D-XX Evaluation Kit demonstrates the - External reference voltage (V ): AV -5.1V REF DD performance of the MCP331x1D-XX SAR ADC family Differential Input Operation devices. The evaluation kit includes: (a) MCP331x1D - Input full-scale range: -V to +V REF REF Evaluation Board, (b) PIC32MZ EF Curiosity Board for Ultra Low Current Consumption (typical): data collection, and (c) SAR ADC Utility PC GUI. - During input acquisition (standby): ~1.5 A Contact Microchip Technology Inc. for the evaluation - During conversion: tools and the PIC32 firmware example codes. MCP33151D/41D-10: ~0.66 mA MCP33151D/41D-05: ~0.33 mA Package Types SPI-Compatible Serial Communication: - SCLK clock rate: up to 100 MHz - 3-wire with optional BUSY indicator MSOP-10 ADC Self-Calibration for Offset, Gain, and Linearity Errors: - During power-up (automatic) - On-Demand via users command during normal operation Built In Data Accumulator - Integrate up to 1024 consecutive converted samples TDFN-10 * - Increase ENOB up to 18.5 bits by automatically averaging conversion results AEC-Q100 Qualified: - Temperature grade 1: -40C to +125C Package Options: MSOP-10 and TDFN-10 * Includes Exposed Thermal Pad (see Table 4-1). MCP331x1D-XX Device Offering (Note 1) Performance (Typical) Sample Input Range Part Number Resolution Input Type SNR SFDR THD INL DNL Rate (Differential) (dBFS) (dB) (dB) (LSB) (LSB) MCP33151D-10 14-bit 1 Msps Differential 5.1V 83.8 107.3 -104.7 0.27 0.11 MCP33141D-10 12-bit 1 Msps Differential 5.1V 73.8 100.0 -101.5 0.07 0.05 MCP33151D-05 14-bit 500 kSPS Differential 5.1V 83.7 103.8 -100.9 0.27 0.11 MCP33141D-05 12-bit 500 kSPS Differential 5.1V 73.8 99.8 -98.9 0.07 0.05 Note 1: SNR, SFDR, and THD are measured with f =10 kHz, V = -1 dBFS, V =5.1V. IN IN REF 2019 Microchip Technology Inc. DS20006219A-page 1MCP33151D/41D-XX Application Diagram AV to 5.1V 1.8V 1.8V to 5.5V DD V AV DV REF DD IO 15 AIN+ 0V to V REF SDI 2.2nF MCP331x1D-XX CNVST Host Device 15 SCLK A - IN (PIC32MZ) SDO 0V to V REF 2.2nF GND During Standby, most of the internal analog circuitry is Description shutdown in order to reduce current consumption. The MCP33151D/41D-10 and MCP33151D/41D-05 Typically, the device consumes approximately 1.5 A are fully-differential, 14-bit and 12-bit, single-channel, during Standby. A new conversion is started on the 1Msps and 500kSPS ADC family devices, rising edge of CNVST. When the conversion is respectively, featuring low power consumption and complete and the host lowers CNVST, the output data high performance, using a successive approximation is presented on SDO, and the device enters Standby to register (SAR) architecture. begin acquiring the next input sample. The user can clock out the ADC output data using the The device operates with an external voltage reference SPI-compatible serial clock during Standby. (V ) from AV to 5.1V, which supports a wide range REF DD of input full-scale range from -V to +V . The REF REF The ADC system clock is generated by the internal reference voltage setting is independent of the analog on-chip clock, therefore the conversion is performed supply voltage (AV ) The conversion output is DD . independent of the SPI serial clock (SCLK). available through an easy-to-use simple SPI- This device can be used for various high-speed and compatible 3-wire interface. high-accuracy analog-to-digital data conversion The device requires a 1.8V analog supply voltage applications, where design simplicity, low power, and (AV ) and a 1.7V to 5.5V digital I/O interface supply DD no output latency are needed. voltage (DV ). The wide digital I/O interface supply IO The device is AEC-Q100 qualified for automotive (DV ) range (1.7-5.5V) allows the device to interface IO applications and operates over the extended with most host devices (Master) available in the current temperature range of -40C to +125C. The available industry such as the PIC32 microcontrollers, without package options are Pb-free small 3mm3mm using external voltage level shifters. TDFN-10 and MSOP-10. Once all supply voltages are connected, the device will power-up and perform an automatic calibration to minimize offset, gain and linearity errors. The automatic calibration takes place approximately 40 ms following power-up, and it is necessary to ensure that all power supplies are fully settled and stable after this time. See Section4.3 Power-Up Sequence and Auto-Calibration for more details. The device performance stays stable across the specified temperature range. However, when extreme changes in the operating environment, such as in the reference voltage, are made with respect to the initial conditions (e.g. the reference voltage did not fully settle during the initial power-up sequence), the user may send a recalibrate command anytime to initiate another self-calibration and restore optimum performance. When the initial power-up sequence is completed, the device enters a low-current input acquisition mode (also referred to as Standby mode), where sampling capacitors are connected to the input pins. DS20006219A-page 2 2019 Microchip Technology Inc.