ADS1294R (ACTIVE)

4-Channel, 24-Bit Analog-To-Digital Converter w/Integrated Respiration Impedance and ECG Front End

Description

The ADS1294/6/8/4R/6R/8R are a family of multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with built-in programmable gain amplifiers (PGAs), internal reference, and an onboard oscillator. The ADS1294/6/8/4R/6R/8R incorporate all of the features that are commonly required in medical electrocardiogram (ECG) and electroencephalogram (EEG) applications.

With its high levels of integration and exceptional performance, the ADS1294/6/8/4R/6R/8R family enables the development of scalable medical instrumentation systems at significantly reduced size, power, and overall cost.

The ADS1294/6/8/4R/6R/8R have a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection. Additionally, any configuration of input channels can be selected for derivation of the right leg drive (RLD) output signal. The ADS1294/6/8/4R/6R/8R operate at data rates as high as 32kSPS, thereby allowing the implementation of software PACE detection. Lead-off detection can be implemented internal to the device, either with a pull-up/pull-down resistor or an excitation current sink/source. Three integrated amplifiers generate the Wilson Central Terminal (WCT) and the Goldberger Central Terminals (GCT) required for a standard 12-lead ECG. The ADS1294R/6R/8R versions include a fully-integrated, respiration impedance measurement function.

Multiple ADS1294/6/8/4R/6R/8R devices can be cascaded in high channel count systems in a daisy-chain configuration.

Package options include a tiny 8mm × 8mm, 64-ball BGA and a TQFP-64. The ADS1294/6/8 BGA version is specified over the commercial temperature range of 0°C to +70°C. The ADS1294R/6R/8R BGA and ADS1294/6/8 TQFP versions are specified over the industrial temperature range of –40°C to +85°C.

Features

  • Eight Low-Noise PGAs and Eight High-Resolution ADCs
    (ADS1298, ADS1298R)
  • Low Power: 0.75mW/channel
  • Input-Referred Noise: 4µVPP (150Hz BW,
    G = 6)
  • Input Bias Current: 200pA
  • Data Rate: 250SPS to 32kSPS
  • CMRR: –115dB
  • Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
  • Supports AAMI EC11, EC13, IEC60601-1, IEC60601-2-27,
    and IEC60601-2-51 Standards
  • Unipolar or Bipolar Supplies:
    AVDD = 2.7V to 5.25V, DVDD = 1.65V to 3.6V
  • Built-In Right Leg Drive Amplifier, Lead-Off Detection,
    WCT, PACE Detection, Test Signals
  • Integrated Respiration Impedance Measurement
    (ADS1294R/6R/8R only)
  • Digital PACE Detection Capability
  • Built-In Oscillator and Reference
  • Flexible Power-Down, Standby Modes
  • SPI-Compatible Serial Interface
  • Operating Temperature Range:
    –40°C to +85°C

View more

Parametrics Compare all products in Medical Analog Front End

 
Resolution (Bits)
Sample Rate (max) (SPS)
# Input Channels
Reference Mode
Architecture
Interface
Rating
Operating Temperature Range (C)
Pin/Package
Approx. Price (US$)
ADS1294R ADS1191 ADS1192 ADS1194 ADS1196 ADS1198 ADS1291 ADS1292 ADS1292R ADS1294 ADS1296 ADS1296R ADS1298 ADS1298R
24     16     16     16     16     16     24     24     24     24     24     24     24     24    
32KSPS     8KSPS     8KSPS     8KSPS     8KSPS     8KSPS     8KSPS     8KSPS     8kSPS     32KSPS     32KSPS     32KSPS     32KSPS     32KSPS    
4     1     2     4     6     8     1     3     3     4     6     6     8     8    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Int
Ext    
Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma     Delta-Sigma    
Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI     Serial SPI    
Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog     Catalog    
-40 to 85     -40 to 85     -40 to 85     0 to 70     0 to 70     0 to 70     -40 to 85     -40 to 85     -40 to 85     -40 to 85
0 to 70    
-40 to 85
0 to 70    
-40 to 85     -40 to 85
0 to 70    
-40 to 85    
64NFBGA     32TQFP
32VQFN    
32TQFP
32VQFN    
64NFBGA
64TQFP    
64NFBGA
64TQFP    
64NFBGA
64TQFP    
32TQFP
32VQFN    
32TQFP
32VQFN    
32TQFP
32VQFN    
64NFBGA
64TQFP    
64NFBGA
64TQFP    
64NFBGA     64NFBGA
64TQFP    
64NFBGA    
11.95 | 1ku     2.95 | 1ku     3.85 | 1ku     7.80 | 1ku     11.35 | 1ku     14.35 | 1ku     3.75 | 1ku     4.65 | 1ku     4.85 | 1ku     11.95 | 1ku     17.95 | 1ku     17.95 | 1ku     23.95 | 1ku     23.95 | 1ku    

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