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ADS127L01

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24-Bit, 512kSPS, 1-Ch, Very-Low-Power, Wide-Bandwidth Delta-Sigma ADC

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Data sheet

A newer version of this product is available

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Same functionality with different pin-out to the compared device
NEW ADS127L21 ACTIVE 24-bit, 512-kSPS wide-bandwidth delta-sigma ADC with programmable IIR and FIR filters Custom filters
Similar functionality to the compared device
ADS127L11 ACTIVE 24-bit, 400-kSPS, delta-sigma ADC with easy-to-drive inputs and wideband or low-latency filters Improved INL (0.9 ppm), lower power (3.3 mW), and smaller size (3 mm x 3 mm)

ADS127L01

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 24 Sample rate (max) (ksps) 512 Number of input channels 1 Interface type SPI Architecture Delta-Sigma Input type Differential Rating Catalog Reference mode External Input voltage range (max) (V) 3 Input voltage range (min) (V) 0 Features Daisy-Chainable, Wideband Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 7 Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 3.6 SNR (dB) 115.5 Digital supply (min) (V) 1.7 Digital supply (max) (V) 3.6
Resolution (Bits) 24 Sample rate (max) (ksps) 512 Number of input channels 1 Interface type SPI Architecture Delta-Sigma Input type Differential Rating Catalog Reference mode External Input voltage range (max) (V) 3 Input voltage range (min) (V) 0 Features Daisy-Chainable, Wideband Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 7 Analog supply (min) (V) 2.7 Analog supply voltage (max) (V) 3.6 SNR (dB) 115.5 Digital supply (min) (V) 1.7 Digital supply (max) (V) 3.6
TQFP (PBS) 32 49 mm² 7 x 7
  • 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
  • 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

The ADS127L01 is a 24-bit, delta-sigma (ΔΣ), analog-to-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 low-latency 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).

The ADS127L01 is a 24-bit, delta-sigma (ΔΣ), analog-to-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 low-latency 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).
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Technical documentation

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Type Title Date
* Data sheet ADS127L01 24-Bit, High-Speed, Wide-Bandwidth Analog-to-Digital Converter datasheet (Rev. B) PDF | HTML 22 Sep 2016
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML 29 Mar 2023
Application note Calculating Conversion Latency and System Cycle Time for Delta-Sigma ADCs PDF | HTML 23 Mar 2022
Application note A Basic Guide to Bridge Measurements PDF | HTML 18 Feb 2022
Application note Communication Methods for Data Integrity Using Delta-Sigma Data Converters (Rev. A) PDF | HTML 23 Aug 2021
E-book Fundamentals of Precision ADC Noise Analysis 19 Jun 2020
EVM User's guide ADS127L01 Evaluation Module User's Guide (Rev. B) 24 Apr 2017
Technical article Go differential to differentiate your precision design PDF | HTML 11 Aug 2016
White paper Voltage-reference impact on total harmonic distortion 01 Aug 2016

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Evaluation board

ADS127L01EVM — ADS127L01 Evaluation Module

The ADS127L01EVM is an evaluation platform for the ADS127L01. The ADS127L01 is a 24-bit, delta-sigma analog-to-digital converter (ADC) with data rates up to 512 kSPS. It offers a unique combination of excellent dc accuracy and outstanding ac perforamnce. The high-order, chopper-stabilized modulator (...)

User guide: PDF
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Support software

ADS127L01-EXCEL-TOOL-CALC — ADS127L01 Excel Calculator

The ADS127L01 Excel calculator tool provides the user with several easy-to-use tools to simplify the configuration of the ADS127L01. The tool helps the user understand the different settings and operating modes that aid in optimizing a design with the ADS127L01 wide-bandwidth analog-to-digital (...)

Supported products & hardware

Supported products & hardware

Products
Precision ADCs
ADS127L01 — 24-Bit, 512kSPS, 1-Ch, Very-Low-Power, Wide-Bandwidth Delta-Sigma ADC
Hardware development
Evaluation board
ADS127L01EVM — ADS127L01 Evaluation Module
Download
Support software

SBOC461 — TINA-TI ADS127L01 MFB Driver LG Test of Figure78 THS4551

Supported products & hardware

Supported products & hardware

Products
Fully differential amplifiers
THS4551 — Low Noise, Precision, 150MHz, Fully Differential Amplifier THS4552 — Dual Channel, Low-Noise, Precision, 150-MHz, Fully Differential Amplifier
Precision ADCs
ADS127L01 — 24-Bit, 512kSPS, 1-Ch, Very-Low-Power, Wide-Bandwidth Delta-Sigma ADC
Software
Simulation tool
TINA-TI — SPICE-based analog simulation program
Download
Support software

SBOC462 — TINA-TI ADS127L01 MFB Driver of Figure78 THS4551

Supported products & hardware

Supported products & hardware

Products
Fully differential amplifiers
THS4551 — Low Noise, Precision, 150MHz, Fully Differential Amplifier THS4552 — Dual Channel, Low-Noise, Precision, 150-MHz, Fully Differential Amplifier
Precision ADCs
ADS127L01 — 24-Bit, 512kSPS, 1-Ch, Very-Low-Power, Wide-Bandwidth Delta-Sigma ADC
Software
Simulation tool
TINA-TI — SPICE-based analog simulation program
Download
Simulation model

ADS127L01 IBIS Model

SBAM270.ZIP (67 KB) - IBIS Model
Download
Calculation tool

ANALOG-ENGINEER-CALC — Analog engineer's calculator

The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
User guide: PDF
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Design guide: PDF
Schematic: PDF
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TIDA-01013 — Low Power, Low Noise 24b Analog Front-End Reference Design for DAQ and Wireless Sensor IoT Systems

The need for lower power, lower noise analog front-ends (AFE) is becoming increasingly important in many applications today, such as data acquisition systems (DAQs), field instrumentation, Internet-of-Things (IoT), and automatic test equipment. In many cases, this need is highlighted by the advent (...)
Design guide: PDF
Schematic: PDF
Reference designs

TIDA-01471 — IEPE Vibration Sensor Interface for PLC Analog Input Reference Design

Industrial vibration sensing is crucial part in condition monitoring necessary for predictive maintenance. Integrated Electronic Piezoelectric (IEPE) sensor is the most common vibration sensor used in industrial environment. This design is a full analog front-end for IEPE sensor interface (...)
Design guide: PDF
Schematic: PDF
Package Pins Download
TQFP (PBS) 32 View options
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