Overview
The ADS1293CISQ/NOPB, produced by Texas Instruments, is a low-power, 3-channel, 24-bit analog front-end (AFE) designed specifically for biopotential measurements. This device is highly integrated and optimized for portable, low-power medical, sports, and fitness electrocardiogram (ECG) applications. With its high-resolution digital ECG channels and simultaneous pace output, the ADS1293 enables the development of scalable medical instrumentation systems with reduced size, power, and overall cost.
Key Specifications
| Parameter | Min | |||
|---|---|---|---|---|
| Analog Supply Voltage (VDD) | 2.7 | 5.5 | V | |
| Digital I/O Supply Voltage (VDDIO) | 1.65 | 3.6 | V | |
| Input-Referred Noise (40-Hz Bandwidth) | 7 | µVpp | ||
| Input Bias Current | -175 | 175 | pA | |
| Data Rate | Up to 25.6 | ksps | ||
| Differential Input Voltage Range | -400 | 400 | mV | |
| Power Consumption per Channel | 0.3 | mW | ||
| Operating Temperature | -20 | 85 | °C |
Key Features
- Three high-resolution digital ECG channels with simultaneous pace output
- EMI-hardened inputs for robust performance in noisy environments
- Low power consumption: 0.3 mW per channel
- Flexible routing switch allowing independent lead-off detection, right-leg drive, and Wilson/Goldberger reference terminal generation
- AC and DC lead-off detection
- Right-leg drive amplifier
- Built-in oscillator and reference
- Flexible power-down and standby modes
- Self-diagnostics alarm system with interrupt-driven diagnostics
- Battery voltage monitoring
Applications
- Portable 1/2/3/5/6/7/8/12-lead ECG systems
- Patient vital sign monitoring: Holter, event, stress, and telemedicine
- Automated external defibrillators
- Sports and fitness applications (heart rate and ECG monitoring)
Q & A
- What is the primary application of the ADS1293CISQ/NOPB?
The primary application is for biopotential measurements in portable, low-power medical, sports, and fitness ECG systems.
- How many ECG channels does the ADS1293CISQ/NOPB support?
The device supports three high-resolution digital ECG channels.
- What is the maximum data rate of the ADS1293CISQ/NOPB?
The maximum data rate is up to 25.6 ksps.
- What is the input-referred noise level of the ADS1293CISQ/NOPB?
The input-referred noise level is 7 µVpp in a 40-Hz bandwidth.
- What is the power consumption per channel of the ADS1293CISQ/NOPB?
The power consumption per channel is 0.3 mW.
- Does the ADS1293CISQ/NOPB have built-in EMI protection?
- What are the operating temperature ranges for the ADS1293CISQ/NOPB?
The operating temperature ranges from -20°C to 85°C.
- Does the ADS1293CISQ/NOPB support lead-off detection?
- What package type is the ADS1293CISQ/NOPB available in?
The device is available in a 28-pin QFN (5x5 mm) package.
- Does the ADS1293CISQ/NOPB have self-diagnostics capabilities?
