1 Features

Integrated Signal Chain for ECG, Pace Detection, and Respiration Measurement
ECG Receiver
- EMI-hardened inputs
- Four high resolution channels at low power of 0.42mW/channel
- Flexible four leads selectable from six electrodes
- Programmable gain: 1.25 to 9
- Input-referred noise: 4μV_PP in 150Hz BW
- Differential input range: ±1V with Gain = 4
- CMRR: 140dB
- Data rate: 250SPS to 128kSPS
Pace Detection
- On-chip digital pace detection algorithm on programmable two leads
- High-speed 128kSPS pace output on two channels for software pace detection
Respiration
- Low-noise of 24mΩ_PP with 2kΩ body impedance and 1kΩ protection on each electrode
- Supports Sine and Square wave excitation
Other Features
- Built-in right leg drive amplifier steerable to any electrode
- DC lead-off detection, AC lead impedance detection, Wilson Center Terminal (WCT), Goldberger Central Terminals (GCT), test signals
- Battery voltage monitoring
- Flexible power-down and standby modes
- Built-in PLL and reference
- 1k sample main FIFO and 2k sample pace FIFO
- SPI-compatible serial interface
- Analog supply voltage 1: 3.15V to 5.25V
- Analog supply voltage 2: 1.7V to 1.9V
- I/O supply voltage: 1.65V to 3.6V
Supports systems meeting AAMI EC11, EC13, EC38, IEC60601-1, IEC60601-2-25, IEC60601-2-27, and IEC60601-2-51 standards