1 Features
1• Qualified for Automotive Applications
• AEC-Q100 Qualified with the Following Results:
– Temperature Grade 1: –40°C to 125°C
– HBM ESD Classification 2
– CDM ESD Classification C4B
• Programmable Data Rates: 10 SPS to 14.4 kSPS
• Single-Cycle Settling Digital Filter
• High Performance:
– 21.3 ENOB at 1.2 kSPS
– INL: 3 ppm
– Offset Drift: 0.05 μV/°C
– Gain Drift: 0.5 ppm/°C
• Internal Reference: 2.5 V, 10 ppm/°C Drift
• Internal 2% Accurate Oscillator
• Input Signal Out-of-Range Detection
• Optional Checksum and Redundant Data-Read
Capability to Augment Data Integrity
• SPI™-Compatible Interface, Mode 1
• Analog Supply: 5 V or ±2.5 V
• Digital Supply: 2.7 V to 5 V

2 Applications
• Automotive Power Train
• Electrical Vehicles

3 Description
The ADS1259-Q1 is a precision, low-drift, 24-bit,
analog-to-digital converter (ADC). The device can perform conversions at data rates up to 14.4 kSPS
with high resolution and is therefore ideally suited to
measure rapidly changing signals that have a wide
dynamic range. An integrated low-noise, low-drift 2.5-V reference eliminates the need for an external
voltage reference, thus reducing system cost and
component count.
The converter uses a fourth-order, inherently stable,
delta-sigma (ΔΣ) modulator that provides outstanding
noise performance and linearity. The device can use the integrated oscillator, an external crystal, or an
external clock as the ADC clock source.
A fast-responding input overrange detector flags the
conversion data if an input overrange event occurs.
To augment data integrity in noisy automotive
environments the ADS1259-Q1 offers an optional checksum byte and a redundant conversion data-
read capability.
The ADS1259-Q1 consumes 13 mW during operation and less than 25 μW when powered down. TI offers
the ADS1259-Q1 device in a TSSOP-20 package
with full specification from –40°C to 125°C.