Overview
The ADS1298IPAGR is a low-power, 8-channel, 24-bit analog front-end from Texas Instruments, designed specifically for biopotential measurements such as electrocardiogram (ECG) and electroencephalogram (EEG) applications. This device is part of the ADS129x family, which includes the ADS1294, ADS1296, and ADS1298, as well as their 'R' variants. The ADS1298IPAGR integrates eight low-noise programmable gain amplifiers (PGAs) and eight high-resolution analog-to-digital converters (ADCs), making it highly suitable for medical instrumentation systems that require high levels of integration and exceptional performance.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TQFP (PAG) with 64 pins |
| Operating Temperature Range | -40°C to 85°C |
| Resolution | 24-bit |
| Data Rate | 250 SPS to 32 kSPS |
| Input-Referred Noise | 4 μVPP (150 Hz BW, G = 6) |
| Input Bias Current | 200 pA |
| CMRR | -115 dB |
| Programmable Gain | 1, 2, 3, 4, 6, 8, or 12 |
| Analog Supply Voltage (AVDD) | 2.7 V to 5.25 V |
| Digital Supply Voltage (DVDD) | 1.65 V to 3.6 V |
| Power Consumption per Channel | 0.75 mW |
Key Features
- Eight low-noise PGAs and eight high-resolution ADCs
- Low power consumption: 0.75 mW/channel
- Integrated right leg drive amplifier, lead-off detection, Wilson center terminal, pace detection, and test signals
- Integrated respiration impedance measurement (in 'R' variants)
- 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
Applications
The ADS1298IPAGR is primarily used in medical instrumentation systems for ECG and EEG applications. It is also suitable for other biopotential measurement applications due to its high integration, low power consumption, and exceptional performance. The device can be used in various medical devices such as portable ECG monitors, EEG systems, and other diagnostic equipment.
Q & A
- What is the resolution of the ADS1298IPAGR?
The ADS1298IPAGR has a resolution of 24 bits. - What is the data rate range of the ADS1298IPAGR?
The data rate range is from 250 SPS to 32 kSPS. - What is the input-referred noise of the ADS1298IPAGR?
The input-referred noise is 4 μVPP (150 Hz BW, G = 6). - What are the programmable gain options for the ADS1298IPAGR?
The programmable gain options are 1, 2, 3, 4, 6, 8, or 12. - Does the ADS1298IPAGR support respiration impedance measurement?
The 'R' variants of the ADS1298 include a fully integrated respiration impedance measurement function. - What are the operating temperature ranges for the ADS1298IPAGR?
The operating temperature range is -40°C to 85°C. - What are the supply voltage ranges for the ADS1298IPAGR?
The analog supply voltage (AVDD) range is 2.7 V to 5.25 V, and the digital supply voltage (DVDD) range is 1.65 V to 3.6 V. - Does the ADS1298IPAGR have built-in lead-off detection?
Yes, the ADS1298IPAGR has built-in lead-off detection capabilities. - Can multiple ADS1298IPAGR devices be cascaded?
Yes, multiple devices can be cascaded in a daisy-chain configuration for high channel count systems. - What communication interface does the ADS1298IPAGR use?
The ADS1298IPAGR uses an SPI™-compatible serial interface.
