SAR 18-bit ADC with ref comes in 12-pin package




Description

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 6ppm/°C reference with internal buffer, saving the cost and space of an external reference.

The MAX11156 produces 94.6dB SNR and -105dB THD (typ). The MAX11156 guarantees 18-bit no-missing codes.

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.

ey Features

  • High DC and AC Accuracy
  • 18-Bit Resolution with No Missing Codes
  • SNR: 94.6dB
  • THD: -105dB at 10kHz
  • ±2.5 LSB INL (typ)
  • ±0.4 LSB DNL (typ)
  • Internal Reference and Reference Buffer Save Cost and Board Space
  • 6ppm/°C (typ)
  • Tiny 12-Pin 3mm x 3mm TDFN Package
  • Bipolar ±5V Analog Input Range Saves External Signal Conditioning
  • Single-Supply ADC with Low Power
  • 5V Analog Supply
  • 2.3V to 5V Digital Supply
  • 26.5mW at 500ksps
  • Shutdown Mode
  • 500ksps Throughput Rate
  • No Pipeline Delay/Latency
  • Flexible Industry-Standard Serial Interface Saves I/O Pins
  • SPI/QSPI/MICROWIRE®/DSP-Compatible

SAR 18-bit ADC with voltage ref comes in 12-pin package




Maxim Integrated Products has introduced its smallest 12-pin, 18-bit successive approximation register (SAR) analogue-to-digital converter (ADC).

Available in a 3x3mm TDFN package, the MAX11156 has an internal reference and reference buffer.

It supports a ±5V input from a single positive 5V input rail, which can eliminate the need for negative power supplies and simplifies designs.

The device has an 18-bit resolution and a 500ksample/s sampling rate.

DC accuracy is 0.5 LSB DNL and 2.5 LSB INL (typ)). AC performance is 94.6dB SNR and -105dB THD (typ)). The device has an SPI-compatible serial interface, which can be used to daisy-chain multiple ADCs in parallel for multichannel applications.

 

For more read: SAR 18-bit ADC with ref comes in 12-pin package




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