ADS1293 Complete Low-Power Integrated Analog Front End for ECG Applications | TI.com

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

 

Description

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.

Features

  • 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

WEBENCH® Medical AFE ADS1293

Medical AFE Designer

Parametrics

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS1293 Order now 24     25.6     3     SPI     -20 to 85     WQFN | 28     6.50 | 1ku     0.9     28WQFN: 25 mm2: 5 x 5 (WQFN | 28)     Delta-Sigma     Differential     Simultaneous Sampling     Int     Oscillator     0.4     0     2.7     5.5     1.65     3.6           Catalog    
ADS1192 Order now 16     8     2     SPI     -40 to 85     TQFP | 32
VQFN | 32    
3.85 | 1ku     0.67     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)
32VQFN: 16 mm2: 4 x 4 (VQFN | 32)    
Delta-Sigma     Differential
Single-Ended    
Simultaneous Sampling     Int
Ext    
Daisy-Chainable
GPIO
Oscillator
PGA    
5.25     0     2.7     5.25     1.7     3.6     1     92     -100     Catalog    
ADS1292 Order now 24     8     2     SPI     -40 to 85     TQFP | 32
VQFN | 32    
4.65 | 1ku     0.7     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)
32VQFN: 16 mm2: 4 x 4 (VQFN | 32)    
Delta-Sigma     Differential
Single-Ended    
Simultaneous Sampling     Int
Ext    
Daisy-Chainable
GPIO
Oscillator
PGA    
5.25     0     2.7     5.25     1.7     3.6       107     -104     Catalog    
ADS1292R Order now 24     8     2     SPI     -40 to 85     TQFP | 32
VQFN | 32    
4.85 | 1ku     0.7     32TQFP: 49 mm2: 7 x 7 (TQFP | 32)
32VQFN: 16 mm2: 4 x 4 (VQFN | 32)    
Delta-Sigma     Differential
Single-Ended    
Simultaneous Sampling     Int
Ext