The MAX11156 18-bit, 500ksps, SAR ADC offers excellent AC and DC performance with true bipolar input range, small size, and internal reference. The MAX11156 measures a ±5V (10VP-P) input range while operating from a single 5V supply. A patented charge-pump architecture allows direct sampling of high-impedance sources. The MAX11156 integrates an optional internal reference and buffer, saving additional cost and space. This ADC achieves 94.6dB SNR and -101.4dB THD (typ). The MAX11156 guarantees 18-bit no-missing codes and ±2.8 LSB INL (typ). The MAX11156 communicates using an SPI-compatible serial interface at 2.5V, 3V, 3.3V, or 5V logic. The serial interface can be used to daisy-chain multiple ADCs in parallel for multichannel applications and provides a busy indicator option for simplified system synchronization and timing. The MAX11156 is offered in a 12-pin, 3mm x 3mm, TDFN package and is specified over the -40°C to +85°C temperature range. Applications * Automatic Test Equipment * Data Acquisition Systems * Industrial Control Systems/Process Control * Medical Instrumentation * High DC/AC Accuracy Improves Measurement Quality * 18-Bit Resolution with No Missing Codes * 500ksps Throughput Rates without Pipeline Delay/Latency * 94.6dB SNR and -101.4dB THD at 10kHz * 1.6 LSBRMS Transition Noise * ±0.5 LSB DNL (typ) and ±2.8 LSB INL (typ) * Highly Integrated ADC Saves Cost and Space * 6ppm/°C Internal Reference * Internal Reference Buffer * ±5V Bipolar Analog Input Range * Wide Supply Range and Low Power Simplify Power-Supply Design * 5V Analog Supply * 2.3V to 5V Digital Supply * 25.8mW Power Consumption at 500ksps * 10µA in Shutdown Mode * Multi-Industry Standard Serial Interface and Small Package Reduce Size * SPI/QSPI™/MICROWIRE®/DSP-Compatible Serial Interface * 3mm x 3mm Tiny 12-Pin TDFN Package https://elecena.pl/product/22313331/18-bit-500ksps-5v-sar-adc-with-internal-reference-in-tdfn 2022-12-26 https://elecena.pl/product/22313331/18-bit-500ksps-5v-sar-adc-with-internal-reference-in-tdfn 2025-01-18