Overview
The ADS1299-6PAG is a low-noise, 6-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 4-, 6-, and 8-channel variants. It is particularly suited for medical instrumentation applications such as electroencephalogram (EEG), electrocardiography (ECG), fetal ECG, sleep study monitors, and bispectral index (BIS) monitoring. The ADS1299-6PAG integrates high-resolution simultaneous-sampling delta-sigma (ΔΣ) ADCs, programmable gain amplifiers (PGAs), and various built-in features to enhance performance and reduce system size, power, and cost.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 6 | |
| Resolution | 24 Bits | |
| Input-Referred Noise | 1 μVPP (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 | V |
| Digital Supply Voltage | 1.8 V to 3.6 V | V |
| Operating Temperature Range | –40°C to +85°C | °C |
| Package Type | TQFP-64 | |
| Power Consumption (Typical) | 5 mW | mW |
Key Features
- Up to six low-noise PGAs and six high-resolution simultaneous-sampling ADCs
- Built-in bias drive amplifier, lead-off detection, and test signals
- Built-in oscillator and internal or external reference options
- Flexible power-down and standby mode
- PIN-compatible with the ADS129x family
- SPI-compatible serial interface
- Optional SRB pins for referential montage configuration
- Daisy-chainable for high channel count systems
- Integrated features include GPIO, oscillator, and PGA
Applications
- Medical instrumentation:
- Electroencephalogram (EEG) studies
- Fetal electrocardiography (ECG)
- Sleep study monitors
- Bispectral index (BIS) monitoring
- Evoked audio potential (EAP)
Q & A
- What is the resolution of the ADS1299-6PAG?
The resolution of the ADS1299-6PAG is 24 bits.
- What is the input-referred noise of the ADS1299-6PAG?
The input-referred noise is 1 μVPP (70-Hz BW).
- What are the programmable gain settings for the ADS1299-6PAG?
The programmable gain settings are 1, 2, 4, 6, 8, 12, or 24.
- What is the operating temperature range of the ADS1299-6PAG?
The operating temperature range is –40°C to +85°C.
- What type of package does the ADS1299-6PAG come in?
The ADS1299-6PAG comes in a TQFP-64 package.
- Can multiple ADS1299-6PAG devices be cascaded?
Yes, multiple devices can be cascaded in a daisy-chain configuration for high channel count systems.
- What is the typical power consumption of the ADS1299-6PAG?
The typical power consumption is 5 mW.
- What interface does the ADS1299-6PAG use for communication?
The ADS1299-6PAG uses an SPI-compatible serial interface.
- Does the ADS1299-6PAG have built-in lead-off detection?
Yes, the ADS1299-6PAG has built-in lead-off detection using an excitation current sink or source.
- What are some of the medical applications of the ADS1299-6PAG?
The ADS1299-6PAG is used in EEG studies, fetal ECG, sleep study monitors, BIS monitoring, and EAP.
