Overview
The ADS1292IRSMT is a 24-bit, low-power, analog front-end (AFE) device designed by Texas Instruments. It is part of the ADS1291, ADS1292, and ADS1292R family, which are multichannel, simultaneous sampling, delta-sigma (ΔΣ) analog-to-digital converters (ADCs). These devices are highly integrated and optimized for portable, low-power medical electrocardiogram (ECG), sports, and fitness applications. The ADS1292IRSMT features high levels of integration and exceptional performance, enabling the creation of scalable medical instrumentation systems with reduced size, power, and overall cost.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 | Bits |
| Data Rate | 125 SPS to 8 kSPS | SPS |
| Input-referred Noise | 8 μVPP (Gain = 6, 150-Hz BW) | μVPP |
| Input Bias Current | 200 pA | pA |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12 | - |
| Analog Supply Voltage | 2.7 V to 5.25 V | V |
| Digital Supply Voltage | 1.7 V to 3.6 V | V |
| Common-mode Rejection Ratio (CMRR) | 120 dB | dB |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | VQFN-32 (4x4 mm) | - |
Key Features
- Low power consumption: 335 μW/channel
- High-resolution ADCs with built-in programmable gain amplifiers (PGAs)
- Built-in right leg drive amplifier, lead-off detection, and test signals
- Integrated respiration impedance measurement (ADS1292R version)
- Built-in oscillator and reference
- Flexible power-down and standby modes
- SPI™-compatible serial interface
- Flexible input multiplexer per channel for test, temperature, and lead-off detection
- General-purpose I/O pins (GPIOs)
Applications
- Medical instrumentation (ECG): patient monitoring (Holter, event, stress, vital signs), automated external defibrillators (AED), and telemedicine
- Personal care and fitness monitors: heart rate, respiration, and ECG monitoring
- High-precision, simultaneous, multichannel data acquisition
Q & A
- What is the resolution of the ADS1292IRSMT?
The resolution of the ADS1292IRSMT is 24 bits.
- What is the data rate range of the ADS1292IRSMT?
The data rate range is from 125 SPS to 8 kSPS.
- What is the input-referred noise of the ADS1292IRSMT?
The input-referred noise is 8 μVPP at a gain of 6 and a 150-Hz bandwidth.
- What are the programmable gain settings of the ADS1292IRSMT?
The programmable gain settings are 1, 2, 3, 4, 6, 8, or 12.
- What is the operating temperature range of the ADS1292IRSMT?
The operating temperature range is from –40°C to +85°C.
- What package type is the ADS1292IRSMT available in?
The ADS1292IRSMT is available in a VQFN-32 package (4x4 mm).
- Does the ADS1292IRSMT support respiration impedance measurement?
Yes, the ADS1292R version includes a fully integrated respiration impedance measurement function.
- What interface does the ADS1292IRSMT use for data communication?
The ADS1292IRSMT uses an SPI™-compatible serial interface.
- What are some of the key applications of the ADS1292IRSMT?
Key applications include medical instrumentation (ECG), personal care and fitness monitors, and high-precision multichannel data acquisition.
- How does the ADS1292IRSMT manage power consumption?
The ADS1292IRSMT has flexible power-down and standby modes to manage power consumption efficiently.
