ISL26312
12-bit, 125kSPS Low-power ADCs with Single-ended and Differential Inputs and Multiple Input Channels

Key Features

• Excellent Differential Non-Linearity (0.7LSB max)
• Low THD: -86dB (typ)
• 125kSPS Conversion Rate
• Pin-Compatible 2/4-Channel Differential or 4/8-ChannelSingle-Ended Inputs
• Pin-compatible Family Allows Easy Design Upgrades
• Simple SPI-compatible Serial Digital Interface
• Low 2.2mA Operating Current
• Power-down Current between Conversions 8μA (typ)
• Internal 2.5V Reference
• +5.25V to +2.7V Supply
• Excellent ESD Survivability: 5kV HBM, 350V MM, 2kV CDM
• Available in Popular TSSOP Package
• Pb-Free (RoHS Compliant)

Description

The ISL26312/14/15/19 family of sampling SAR-type ADCsfeature excellent linearity over supply and temperaturevariations, and offer versions with 4- and 8-channel single-endedinputs, and 2- and 4-channel differential inputs.
A proprietary input multiplexer reduces the input driverequirements, resulting in lower cost and reduced board space.Specified measurement accuracy is maintained with inputsignals up to VDD.
Members of the ISL26312/14/15/19 family of Low-Power ADCsoffer pinout intercompatibility, differing only in the analog inputs,to support quick replication of proven layouts across multipledesign platforms. The entire family is also pin-compatible withthe ISL264XX 14-bit, 125/250kSPS series, offering a seamlessperformance upgrade path.
The serial digital interface is SPI compatible and is easilyinterfaced to all popular FPGAs and microcontrollers. Powerdissipation is limited to 11mW at a sampling rate of 125kSPS,and just 8μA (typical, Auto Power-down mode) betweenconversions.
The ISL26312/14/15/19 feature up to 5kV Human Body ModelESD survivability and are available in the popular TSSOPpackage. Performance is specified for operation over the fullindustrial temperature range (-40°C to +125°C).

Applications

• Industrial Process Control
• Energy Measurement
• Multichannel Data Acquisition Systems
• Pressure Sensors
• Flow Controllers