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
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.
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