16-Bit, 250ksps, ±5V SAR ADC with Internal Reference in µMAX

The MAX11169 is a 16-bit, 250ksps, SAR ADC offering excellent AC and DC performance with true bipolar input range, internal reference, and small size. The MAX11169 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 MAX11169 integrates a low drift reference with internal buffer, saving the cost and space of an external reference.

This ADC achieves 93dB SNR at 10kHz and -101dB THD. The MAX11169 guarantees 16-bit no-missing codes and ±0.5 LSB INL (typ).

The MAX11169 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 for multichannel applications and provides a busy indicator option for simplified system synchronization and timing.

The MAX11169 is offered in a 10-pin, 3mm x 5mm, µMAX® package and is specified over the -40°C to +85°C temperature range.

Applications

* Automatic Test Equipment * Data Acquisition Systems * Industrial Process Control * Medical Instrumentation

* High DC/AC Accuracy Improves Measurement Quality

* 16-Bit Resolution with No Missing Codes

* 250ksps Throughput Rates without Pipeline Delay/Latency

* 93dB SNR and -101dB THD at 10kHz

* 0.5LSBRMS Input-Referred Noise

* ±0.2 LSB DNL (typ) and ±0.5 LSB INL (typ)

* Highly Integrated ADC Saves Cost and Space

* ±7ppm/°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

* 33mW Power Consumption at 250ksps

* 10µA in Shutdown Mode

* Multi-Industry Standard Serial Interface and Small Package Reduce Size

* SPI/QSPI™/MICROWIRE®/DSP-Compatible Serial Interface

* 3mm x 5mm, Tiny 10-Pin µMAX Package