1 Features

• AEC-Q100 qualified for automotive applications:

– Temperature grade 1: –40°C to +125°C, TA

• Complete 12-bit data acquisition system in a tiny

SOT-23 package

• Low current consumption: Only 90 μA

• Integral nonlinearity: 1 LSB max

• Single-cycle conversion

• Programmable gain amplifier:

– Gain = 1, 2, 4, or 8

• Data rate: 128 SPS

• I2C interface with two available addresses

• Power supply: 2.7 V to 5.5 V

2 Applications

• Automotive head units

• Automotive battery management systems (BMS)

• Automotive onboard chargers

• HEV/EV inverters

• Gas sensors:

– NOx sensors

– Soot and particulate matter (PM) sensors

– Oxygen (O2, lambda, A/F) sensors

– Ammonia (NH3) sensors

– Other emissions and gas sensors

3 Description

The ADS1000-Q1 is an I2C-compatible serial interface

analog-to-digital (A/D) converter with differential

inputs and 12 bits of resolution in a tiny SOT23-6

package. Conversions are performed ratiometrically,

using the power supply as the reference voltage. The

ADS1000-Q1 operates from a single power supply

ranging from 2.7 V to 5.5 V.

The ADS1000-Q1 performs conversions at a rate

of 128 samples per second (SPS). The onboard

programmable gain amplifier (PGA), which offers

gains of up to 8, allows smaller signals to be

measured with high resolution. In single-conversion

mode, the ADS1000-Q1 automatically powers

down after a conversion, greatly reducing current

consumption during idle periods.

The ADS1000-Q1 is designed for applications

where space and power consumption are major

considerations. Typical applications include head

units, battery management systems, onboard

chargers, and emissions and gas sensors.