Complete Low Power Integrated Analog Front End for ECG Applications - ADS1293


Complete Low Power Integrated Analog Front End for ECG Applications


Recommended alternative parts

  • ADS1294  - The device has SIMILAR FUNCTIONALITY but is not functionally equivalent to the compared device.   ADS1294 is a highly integrated delta-sigma data converter optimized for biopotential applications with lower noise, and lower power options.


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.


  • 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

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Input Type
Power Consumption (Typ) (mW)
Input Range (Min) (V)
Input Range (Max) (V)
Integrated Features
Analog Voltage AVDD (Min) (V)
Analog Voltage AVDD (Max) (V)
Operating Temperature Range (C)
THD (Typ) (dB)
SNR (dB)
Reference Mode
ADS1293 ADS1292 ADS1294
24    24    24   
25.6KSPS    8KSPS    32KSPS   
3    3    4   
Differential    Differential
0.9    0.7    3   
0    0    0   
0.4    5.25    5.25   
SPI    SPI    SPI   
Oscillator    Daisy-Chainable
2.7    2.7    2.7   
5.5    5.25    5.25   
Delta-Sigma    Delta-Sigma    Delta-Sigma   
-20 to 85    -40 to 85    -40 to 85
0 to 70   
28WQFN    32TQFP
  -104    -98   
  107    112   
Int    Int

WEBENCH® Medical AFE ADS1293

Medical AFE Designer