Building on its ADS1298 analog-front-end (AFE) family, Texas Instruments Inc. has introduced fully integrated AFEs with on-chip respiration impedance measurement .
According to TI, the 24-bit ADS1298R devices simplify the implementation of respiration detection in portable electrocardiogram (ECG) equipment by integrating more than 40 discrete components , reducing component count as much as 97 percent, TI said. They are also power efficient, using up to 95 percent less power than discrete implementations . ADS1298R devices are available in eight-, six-, and four-channel versions.
Key highlights :
- 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
- 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
- Non-Magnetic BGA Package (ADS1294/6/8 and ADS1194/6/8)
Availability : ADS1298R devices are all available today in an 8-mm x 8-mm BGA package. A non-magnetic BGA package will be available for all three parts in 2Q11.
Datasheet : Click here.