ADS1298 - 8-Channel, 24-Bit ADC for ECG/EEG
ADS1298 - 8-Channel, 24-Bit ADC for ECG/EEG
The eight-channel, 24-bit ADS1298 is the first in a family of fully integrated Analog Front Ends (AFEs) for patient monitoring, portable and high-end electrocardiogram (ECG) and electroencephalogram (EEG). The ADS1298 simplifies design by integrating all common features required for ECG and EEG front ends, using up to 95% fewer components for significant board-space savings.
The ADS1294/6/8 are a family of multichannel, simultaneous sampling, 24-bit, delta-sigma (ΔΣ) Analog-to-Digital Converters (ADCs) with a built-in programmable gain amplifier (PGA), internal reference, and an onboard oscillator. They have a flexible input multiplexer per channel that can be independently connected to the internally-generated signals for test, temperature, and lead-off detection.
Features
- 8 low-noise PGAs and 8 high-resolution ADCs (ADS1298)
- Low Power: 0.75 mW/channel
- Input-referred noise: 5 µVPP (150 Hz BW, G = 6)
- Input Bias Current: 200 pA
- Data Rate: 250 SPS to 32 kSPS
- CMRR: –110 dB
- Programmable Gain: 1, 2, 3, 4, 6, 8, or 12
- Supplies: Unipolar or Bipolar (analog: 2.7... 5.25 V, digital: 1.65...3.6 V)
- Built-in right leg drive amplifier, lead-off detection, WCT, test signals
- Pace detection
- Digital Pace detection capability
- Built-in oscillator and reference
- Flexible power-down, standby mode
- SPI™-compatible serial interface
- Operating temperature range: 0...+70°C (–40...+85°C grade available soon)
Applications
- Medical instrumentation (ECG and EEG) including patient monitoring; Holter, event, stress, and vital signs ECG, AED, telemedicine, fetal ECG and Bispectral index (BIS), Evoked audio potential (EAP), sleep study monitor
- High-precision, simultaneous, multichannel signal acquisition
