ADS1293

ACTIVE

24-bit, 3-ch, Low-Power Analog Front END (AFE) for ECG Applications

Product details

Applications 3-lead ECG, 5-lead ECG, 6-lead ECG, Patient monitoring Number of input channels 3 Resolution (Bits) 24 Number of LEDs 0 Interface type SPI Operating temperature range (°C) -20 to 85 Rating Catalog
Applications 3-lead ECG, 5-lead ECG, 6-lead ECG, Patient monitoring Number of input channels 3 Resolution (Bits) 24 Number of LEDs 0 Interface type SPI Operating temperature range (°C) -20 to 85 Rating Catalog
WQFN (RSG) 28 25 mm² (5 mm × 5 mm)
  • Three High-Resolution Digital ECG Channels With
    Simultaneous Pace Output
  • EMI-Hardened Inputs
  • Low Power: 0.3 mW/channel
  • Input-Referred Noise: 7 µVpp (40-Hz Bandwidth)
  • Input Bias Current: 175 pA
  • Data Rate: Up to 25.6 ksps
  • Differential Input Voltage Range: ±400 mV
  • Analog Supply Voltage: 2.7 V to 5.5 V
  • Digital I/O Supply Voltage: 1.65 V to 3.6 V
  • Right-Leg Drive Amplifier
  • AC and DC Lead-Off Detection
  • Wilson and Goldberger Terminals
  • ALARMB Pin for Interrupt Driven Diagnostics
  • Battery Voltage Monitoring
  • Built-In Oscillator and Reference
  • Flexible Power-Down and Standby Modes
  • Three High-Resolution Digital ECG Channels With
    Simultaneous Pace Output
  • EMI-Hardened Inputs
  • Low Power: 0.3 mW/channel
  • Input-Referred Noise: 7 µVpp (40-Hz Bandwidth)
  • Input Bias Current: 175 pA
  • Data Rate: Up to 25.6 ksps
  • Differential Input Voltage Range: ±400 mV
  • Analog Supply Voltage: 2.7 V to 5.5 V
  • Digital I/O Supply Voltage: 1.65 V to 3.6 V
  • Right-Leg Drive Amplifier
  • AC and DC Lead-Off Detection
  • Wilson and Goldberger Terminals
  • ALARMB Pin for Interrupt Driven Diagnostics
  • Battery Voltage Monitoring
  • Built-In Oscillator and Reference
  • Flexible Power-Down and Standby Modes

The ADS1293 incorporates all features commonly required in portable, low-power medical, sports, and fitness electrocardiogram (ECG) applications. With high levels of integration and exceptional performance, the ADS1293 enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1293 features three high-resolution channels capable of operating up to 25.6 ksps. Each channel can be independently programmed for a specific sample rate and bandwidth allowing users to optimize the configuration for performance and power. All input pins incorporate an EMI filter and can be routed to any channel through a flexible routing switch. Flexible routing also allows independent lead-off detection, right-leg drive, and Wilson/Goldberger reference terminal generation without the need to reconnect leads externally. A fourth channel allows external analog pace detection for applications that do not use digital pace detection.

The ADS1293 incorporates a self-diagnostics alarm system to detect when the system is out of the operating conditions range. Such events are reported to error flags. The overall status of the error flags is available as a signal on a dedicated ALARMB pin.

The device is packaged in a 5-mm × 5-mm × 0.8-mm, 28-pin LLP. Operating temperature ranges from –20°C to 85°C.

The ADS1293 incorporates all features commonly required in portable, low-power medical, sports, and fitness electrocardiogram (ECG) applications. With high levels of integration and exceptional performance, the ADS1293 enables the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1293 features three high-resolution channels capable of operating up to 25.6 ksps. Each channel can be independently programmed for a specific sample rate and bandwidth allowing users to optimize the configuration for performance and power. All input pins incorporate an EMI filter and can be routed to any channel through a flexible routing switch. Flexible routing also allows independent lead-off detection, right-leg drive, and Wilson/Goldberger reference terminal generation without the need to reconnect leads externally. A fourth channel allows external analog pace detection for applications that do not use digital pace detection.

The ADS1293 incorporates a self-diagnostics alarm system to detect when the system is out of the operating conditions range. Such events are reported to error flags. The overall status of the error flags is available as a signal on a dedicated ALARMB pin.

The device is packaged in a 5-mm × 5-mm × 0.8-mm, 28-pin LLP. Operating temperature ranges from –20°C to 85°C.

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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet ADS1293 Low-Power, 3-Channel, 24-Bit Analog Front-End for Biopotential Measurements datasheet (Rev. C) PDF | HTML Dec 17, 2014
Application note QFN and SON PCB Attachment (Rev. C) PDF | HTML Dec 6, 2023
Application note Digital Filter Types in Delta-Sigma ADCs (Rev. A) PDF | HTML Mar 29, 2023
E-book Fundamentals of Precision ADC Noise Analysis (Rev. A) Jun 19, 2020
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs Mar 19, 2015
Application note MSP430 Interface to the ADS1293 Code Library May 17, 2013
User guide ADS1293EVM User's Guide (Rev. B) Jan 23, 2013

Design & development

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

Evaluation board

ADS1293EVM — ADS1293 Evaluation Module

The ADS1293EVM is a demonstration kit for the ADS1293, a three channel, 24-bit delta-sigma (ΔΣ) analog-to-digital converter (ADC), internal reference, and an on-board oscillator. The ADS1293 chip incorporates all of the features that are commonly required in medical electrocardiogram (...)

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Support software

SNAC050 — ADS1293 Software

Supported products & hardware
Support software

SNAC054 — MSP430 Interface to ADS1293 Code Library

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Simulation model

ADS1293 IBIS Model

SNAM124.ZIP (197 KB) - IBIS model
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Calculation tool

ANALOG-ENGINEER-CALC — PC software 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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Design tool

ADC-DAC-TO-VREF-SELECT-DESIGN-TOOL — The ADC-TO-VREF-SELECT tool enables the pairing of TI ADCs, DACs, and series voltage references.

The ADC-TO-VREF-SELECT tool enables the pairing of TI analog-to-digital converters (ADCs) and series voltage references. Users can select an ADC device and the desired reference voltage, and the tool will list up to two voltage reference recommendations.
Supported products & hardware
Reference design

TIDA-00096 — Wireless Heart Monitor with Bluetooth Low Energy

The Wireless Heart Rate Monitor with Bluetooth low-energy (BLE) is intended as a reference design that customers can use to develop end-products for battery-powered, 3-channel health and fitness electrocardiogram (ECG) applications.  The ADS1293 is a highly integrated low-power analog front (...)

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WQFN (RSG) 28 Ultra Librarian

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