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.