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

ADS1293 (ACTIVE)

Complete Low Power Integrated Analog Front End for ECG Applications

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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 25.6ksps. 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 via 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 utilize 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

  • 3 High Resolution Digital ECG Channels with Simultaneous Pace Output
  • EMI Hardened Inputs
  • Low Power: 0.3mW/channel
  • Input-Referred Noise: 7µVpp (40Hz Bandwidth)
  • Input Bias Current: 175pA
  • Data Rate: Up to 25.6ksps
  • Differential Input Voltage Range: ±400mV
  • Analog Supply Voltage: 2.7V to 5.5V
  • Digital I/O Supply Voltage: 1.65V to 3.6V
  • 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 Medical Analog Front End

 
Resolution (Bits)
# Input Channels
Pin/Package
Sample Rate (max) (SPS)
Interface
Approx. Price (US$)
Reference Mode
Operating Temperature Range (C)
Architecture
# Input Channels
ADS1293 ADS1191 ADS1192 ADS1291 ADS1294 ADS1296 ADS1298
24     16     16     24     24     24     24    
3     1     2     1     4     6     8    
28WQFN     32TQFP
32VQFN    
32TQFP
32VQFN    
32TQFP
32VQFN    
64NFBGA
64TQFP    
64NFBGA
64TQFP    
64NFBGA
64TQFP    
25.6KSPS     8KSPS     8KSPS     8KSPS     32KSPS     32KSPS     32KSPS    
Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI    
5.50 | 1ku     2.95 | 1ku     3.85 | 1ku     3.75 | 1ku     11.95 | 1ku     17.95 | 1ku     23.95 | 1ku    
Int     Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
-20 to 85     -40 to 85     -40 to 85     -40 to 85     -40 to 85
0 to 70    
-40 to 85
0 to 70    
-40 to 85
0 to 70    
Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma    
3     1     2     1     4     6     8    

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