Overview
The ADS1299IPAG is a low-noise, 8-channel, 24-bit analog-to-digital converter (ADC) designed by Texas Instruments for biopotential measurements. This device is part of the ADS1299 family, which includes four-, six-, and eight-channel variants. It integrates a programmable gain amplifier (PGA), an internal reference, and an onboard oscillator, making it highly suitable for extracranial electroencephalogram (EEG) and electrocardiography (ECG) applications. The ADS1299IPAG offers high levels of integration and exceptional performance, enabling the creation of scalable medical instrumentation systems with reduced size, power, and overall cost.
Key Specifications
| Specification | Value |
|---|---|
| Package | TQFP (PAG) with 64 pins |
| Operating Temperature Range | –40°C to +85°C |
| Resolution | 24-bit |
| Data Rate | 250 SPS to 16 kSPS |
| Input-Referred Noise | 1 µV PP (70-Hz BW) |
| Input Bias Current | 300 pA |
| CMRR | –110 dB |
| Programmable Gain | 1, 2, 4, 6, 8, 12, or 24 |
| Analog Supply Voltage | 4.75 V to 5.25 V |
| Digital Supply Voltage | 1.8 V to 3.6 V |
Key Features
- Up to eight low-noise PGAs and eight high-resolution simultaneous-sampling ADCs
- Built-in bias drive amplifier, lead-off detection, and test signals
- Built-in oscillator and internal or external reference
- Flexible power-down and standby mode
- Pin-compatible with the ADS129x family
- SPI-compatible serial interface
- Flexible input multiplexer per channel for test, temperature, and lead-off detection
- Optional SRB pins for referential montage configuration
Applications
The ADS1299IPAG is primarily designed for biopotential measurements, making it highly suitable for applications such as:
- Extracranial electroencephalogram (EEG)
- Electrocardiography (ECG)
- Other medical instrumentation systems requiring high-resolution and low-noise ADCs
Q & A
- What is the resolution of the ADS1299IPAG?
The ADS1299IPAG has a resolution of 24 bits. - What is the operating temperature range of the ADS1299IPAG?
The operating temperature range is –40°C to +85°C. - What are the data rates supported by the ADS1299IPAG?
The data rates range from 250 SPS to 16 kSPS. - What is the input-referred noise of the ADS1299IPAG?
The input-referred noise is 1 µV PP (70-Hz BW). - Does the ADS1299IPAG support programmable gain?
Yes, the programmable gain options are 1, 2, 4, 6, 8, 12, or 24. - What are the supply voltage ranges for the ADS1299IPAG?
The analog supply voltage range is 4.75 V to 5.25 V, and the digital supply voltage range is 1.8 V to 3.6 V. - Does the ADS1299IPAG have built-in lead-off detection?
Yes, it has built-in lead-off detection using an excitation current sink or source. - Can multiple ADS1299IPAG devices be cascaded?
Yes, multiple devices can be cascaded in a daisy-chain configuration for high channel count systems. - What type of serial interface does the ADS1299IPAG use?
The ADS1299IPAG uses an SPI-compatible serial interface. - What package type is the ADS1299IPAG available in?
The ADS1299IPAG is available in a TQFP-64 package.
