1 Features
1• Data Rates: Up to 512 kSPS
• AC + DC Performance:
– Passband: Up to 230 kHz
– SNR: Up to 115.5 dB
– THD: Down to -129 dB
– DC Accuracy:
– Offset Drift: 1.5 μV/°C
– Gain Drift: 0.2 ppm/°C
• Operating Modes:
– High-resolution (128 kSPS at 26 mW)
– Low-power (128 kSPS at 15 mW)
– Very-low Power: 105 dB SNR (128 kSPS at 9
mW)
• Digital Filter Options:
– Low-latency Filter: Sinc Frequency Response
– Wideband 1 Filter:
(0.45 to 0.55) × fDATA Transition Band
– Wideband 2 Filter:
(0.40 to 0.50) × fDATA Transition Band
• SPI™ or Frame-Sync Serial Interface
– Daisy-Chain Compatible
• Analog Supply: 2.7 V to 3.6 V
• Digital Supply: 1.7 V to 3.6 V
• Operating Temperature: –40°C to +125°C

2 Applications
• Vibration and Modal Analysis
• Data Acquisition Systems
• Acoustics and Dynamic Strain Gauges
• Power Quality Analysis

3 Description
The ADS127L01 is a 24-bit, delta-sigma (ΔΣ), analogto-
digital converter (ADC) with data rates up to 512
kSPS. This device offers a unique combination of
excellent dc accuracy and outstanding ac
performance. The high-order, chopper-stabilized
modulator achieves very low drift with low in-band
noise. The integrated decimation filter suppresses
modulator out-of-band noise. In addition to al lowlatency
filter, the ADS127L01 provides multiple
Wideband filters with less than ±0.00004 dB of ripple,
and an option for –116-dB stop-band attenuation at
the Nyquist rate.
Traditionally, industrial delta-sigma ADCs that offer
good drift performance use digital filters with large
passband droop. As a result, industrial delta-sigma
ADCs have limited signal bandwidth and are mostly
suited for dc measurements. High-resolution ADCs in
audio applications offer larger usable bandwidths, but
the offset and drift specifications are significantly
weaker than industrial counterparts. The ADS127L01
combines these converters, providing high-precision
industrial measurement with excellent dc and ac
specifications over an extended industrial
temperature range of –40°C to +125°C.
A variety of operating modes allow for optimization of
speed, resolution, and power. A programmable serial
interface with one of three options (SPI, frame-sync
slave, or frame-sync master) provides convenient
interfacing across isolation barriers to
microcontrollers or digital signal processors (DSPs).