Overview
The ADS1299-4PAGR, produced by Texas Instruments, is a low-noise, 4-channel, 24-bit analog-to-digital converter (ADC) designed 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 ADS1299-4PAGR enables the creation of scalable medical instrumentation systems with reduced size, power, and overall cost.
Key Specifications
| Parameter | Value |
|---|---|
| Package | TQFP (PAG) with 64 pins |
| Operating Temperature Range | –40°C to +85°C |
| Input-Referred Noise | 1 µV PP (70-Hz BW) |
| Input Bias Current | 300 pA |
| Data Rate | 250 SPS to 16 kSPS |
| 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
- Daisy-chain configuration for high channel count systems
Applications
The ADS1299-4PAGR is primarily designed for biopotential measurements, making it highly suitable for:
- Extracranial electroencephalogram (EEG) applications
- Electrocardiography (ECG) applications
- Scalable medical instrumentation systems
Q & A
- What is the package type of the ADS1299-4PAGR?
The ADS1299-4PAGR comes in a TQFP (PAG) package with 64 pins.
- What is the operating temperature range of the ADS1299-4PAGR?
The operating temperature range is –40°C to +85°C.
- What are the input-referred noise and input bias current specifications?
The input-referred noise is 1 µV PP (70-Hz BW), and the input bias current is 300 pA.
- What are the data rate and CMRR specifications?
The data rate ranges from 250 SPS to 16 kSPS, and the CMRR is –110 dB.
- What are the programmable gain options for the ADS1299-4PAGR?
The programmable gain options are 1, 2, 4, 6, 8, 12, or 24.
- What are the supply voltage ranges for the analog and digital sections?
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 ADS1299-4PAGR support daisy-chain configuration?
- What interface does the ADS1299-4PAGR use for communication?
The ADS1299-4PAGR uses an SPI-compatible serial interface.
- What are some of the key features of the ADS1299-4PAGR?
- What are the primary applications of the ADS1299-4PAGR?
