Overview
The ADS1298RIZXGT is a 24-bit, 8-channel analog front-end integrated circuit designed by Texas Instruments. It is part of the ADS129xR family, which includes multichannel, simultaneous sampling, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with built-in programmable gain amplifiers (PGAs), internal reference, and an onboard oscillator. This device is particularly suited for medical electrocardiogram (ECG) and electroencephalogram (EEG) applications due to its high integration and exceptional performance.
The ADS1298RIZXGT enables the development of scalable medical instrumentation systems with reduced size, power, and overall cost. It operates over an industrial temperature range of –40°C to +85°C and is packaged in a 64-pin NFBGA (ZXG) package.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Resolution | 24 bits | |
| Number of Channels | 8 | |
| Data Rate | 250 SPS to 32 kSPS | SPS |
| Input-Referred Noise | 4 μV PP (150 Hz BW, G = 6) | μV |
| Input Bias Current | 200 pA | pA |
| Common-Mode Rejection Ratio (CMRR) | –115 dB | dB |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12 | |
| Analog Supply Voltage (AVDD) | 2.7 V to 5.25 V | V |
| Digital Supply Voltage (DVDD) | 1.65 V to 3.6 V | V |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | NFBGA (ZXG) with 64 pins |
Key Features
- Eight low-noise PGAs and eight high-resolution ADCs.
- Low power consumption: 0.75 mW/channel.
- Built-in right leg drive amplifier, lead-off detection, Wilson central terminal, pace detection, and test signals.
- Integrated respiration impedance measurement function.
- Digital pace detection capability.
- Built-in oscillator and reference.
- SPI™-compatible serial interface.
- Supports systems meeting AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 standards.
- Flexible input multiplexer per channel for test, temperature, and lead-off detection.
- Unipolar or bipolar supplies supported.
Applications
The ADS1298RIZXGT is primarily designed for medical applications, particularly in the fields of electrocardiography (ECG) and electroencephalography (EEG). It is suitable for developing scalable medical instrumentation systems, including:
- ECG monitoring systems.
- EEG monitoring systems.
- Respiration impedance measurement systems.
- Other biopotential measurement applications.
Q & A
- What is the resolution of the ADS1298RIZXGT?
The ADS1298RIZXGT has a resolution of 24 bits.
- How many channels does the ADS1298RIZXGT support?
The device supports 8 channels.
- What is the data rate range of the ADS1298RIZXGT?
The data rate range is from 250 SPS to 32 kSPS.
- What is the input-referred noise of the ADS1298RIZXGT?
The input-referred noise is 4 μV PP (150 Hz BW, G = 6).
- What is the common-mode rejection ratio (CMRR) of the ADS1298RIZXGT?
The CMRR is –115 dB.
- What are the programmable gain settings for the ADS1298RIZXGT?
The programmable gain settings are 1, 2, 3, 4, 6, 8, or 12.
- What is the operating temperature range of the ADS1298RIZXGT?
The operating temperature range is –40°C to +85°C.
- What package type is the ADS1298RIZXGT available in?
The device is available in a 64-pin NFBGA (ZXG) package.
- Does the ADS1298RIZXGT support respiration impedance measurement?
Yes, it includes a fully integrated respiration impedance measurement function.
- What standards does the ADS1298RIZXGT comply with?
The device supports systems meeting AAMI EC11, EC13, IEC60601-1, IEC60601-2-27, and IEC60601-2-51 standards.
