MCP33131D/21D/11D-10 1 Msps 16/14/12-Bit Differential Input SAR ADC Features System Design Supports Sample Rate (Throughput): 1 Msps The MCP331x1D Evaluation Kit demonstrates the performance of the MCP331x1D SAR ADC family 16/14/12-Bit Resolution with No Missing Codes devices. The evaluation kit includes: (a) MCP331x1D No Latency Output Evaluation Board, (b) PIC32MZ EF Curiosity Board for Wide Operating Voltage Range: data collection, and (c) SAR ADC Utility PC GUI. - Analog Supply Voltage (AV ): 1.8V DD Contact Microchip Technology Inc. for the evaluation ): - Digital Input/Output Interface Voltage (DV IO tools and the PIC32 MCU firmware example codes. 1.7V - 5.5V ): 2.5V - 5.1V - External Reference (V REF Package Types Differential Input Operation MSOP-10 - Input Full-Scale Range: -V to +V REF REF Ultra Low Current: V 1 10 DV REF IO - Standby Mode (typical): ~ 0.8 A AV 2 9 SDI DD - Conversion Mode (typical): ~1.6 mA A + 3 8 SCLK IN SPI-Compatible Serial Communication: A - 4 SDO 7 IN - SCLK Clock Rate: up to 100 MHz GND 5 6 CNVST ADC Self-Calibration for Offset, Gain, and Linearity Errors: (Note 2) TDFN-10 - During Power-Up (automatic) - On-Demand via users command during V 1 10 DV REF IO normal operation AV 2 9 SDI DD Temperature Range: -40C to +85C EP A + 3 11 8 SCLK Package Options: MSOP-10 and TDFN-10 IN (Note 1) A - 4 7 SDO IN Typical Applications 5 GND 6 CNVST High-Precision Data Acquisition Medical Instruments Note 1: Exposed to air. 2: Contact Microchip Technology Inc. for availability. Industrial and Consumer Data Acquisition Systems Motor Control Applications Switch-Mode Power Supply Applications Battery-Powered Equipment Device Offering (Note 1): Performance (Typical) Sample Input Range Part Number Resolution Input Type Rate (Differential) SNR SFDR THD INL DNL MCP33131D-10 16-bit 1Msps Differential 5.1V 91.3 dBFS 103.5 dB -99.3 dB 2 LSB 0.8 LSB MCP33121D-10 14-bit 1 Msps Differential 5.1V 85.1 dBFS 103.5 dB -99.2 dB 0.5 LSB 0.25 LSB MCP33111D-10 12-bit 1 Msps Differential 5.1V 73.9 dBFS 99.3 dB -96.7 dB 0.12 LSB 0.06 LSB Note 1: SNR, SFDR, and THD are measured with f = 10 kHz, V = -1 dBFS, V = 5V. IN IN REF 2018 Microchip Technology Inc. DS20005947A-page 1MCP33131D/21D/11D-10 Application Diagram 2.5V to 5.1V 1.8V 1.8V to 5.5V V AV DV REF DD IO 22 A + IN 0V to V REF 1.7 nF SDI 16/14/12-bit ADC Host Device CNVST 22 SCLK (PIC32MZ) A - IN SDO 0V to V REF GND 1.7 nF MCP33131D-10, MCP33121D-10, MCP33111D-10 A new conversion is started on the rising edge of Description CNVST. When the conversion is complete and the host The MCP331x1D-10 are fully-differential 16, 14, and lowers CNVST, the output data is presented on SDO, 12-bit, 1Msps single-channel ADC family devices, and the device enters Standby to begin acquiring the featuring low power consumption and high next input sample. The user can clock out the ADC performance, using a successive approximation output data using the SPI-compatible serial clock register (SAR) architecture. during Standby. The device operates with a 2.5V to 5.1V external The ADC system clock is generated by the internal reference (V ), which supports a wide range of input REF on-chip clock, therefore the conversion is performed full-scale range from -V to +V . The reference REF REF independent of the SPI serial clock (SCLK). voltage setting is independent of the analog supply This device can be used for various high-speed and voltage (AV ) and is higher than AV The DD DD. high-accuracy analog-to-digital data conversion conversion output is available through an easy-to-use applications, where design simplicity, low power, and simple SPI- compatible 3-wire interface. no output latency are needed. The device requires a 1.8V analog supply voltage The device is available in a Pb-free small MSOP-10 (AV ) and a 1.7V to 5.5V digital I/O interface supply DD and TDFN-10 packages. The device operates over the voltage (DV ). The wide digital I/O interface supply IO commercial temperature range of -40C to +85C. (DV ) range (1.7V - 5.5V) allows the device to IO interface with most host devices (Master) available in the current industry such as the PIC32 microcontrollers, without using external voltage level shifters. When the device is first powered-up, it performs a self-calibration to minimize offset, gain and linearity errors. The device performance stays very stable across all temperature ranges without any noticeable degradation. However, when changes in the operating environment, such as temperature or reference voltage, are made with respect to the initial conditions, or the reference voltage was not fully settled during the initial power-up sequence, the user may send a recalibrate command anytime to initiate another self-calibration to maintain optimum performance. When the initial power-up sequence is completed, the device enters a low-current input acquisition mode, where sampling capacitors are connected to the input pins. This mode is called Standby. During Standby, most of the internal analog circuitry is shutdown in order to reduce current consumption. Typically, the device consumes less than 1 A during Standby. DS20005947A-page 2 2018 Microchip Technology Inc.