ADS1292IPBS

The ADS1292IPBS from Texas Instruments is a multichannel, simultaneous sampling, 24-bit delta-sigma analog-to-digital converter (ADC) with an integrated programmable gain amplifier (PGA), internal reference, and onboard oscillator. This device is specifically designed for low-power medical electrocardiogram (ECG) applications, including 3-lead, 5-lead, and 6-lead ECG systems, as well as ECG patches and patient monitoring devices.

Key electrical specifications include a 24-bit resolution, 2 input channels, and an SPI interface. It offers a wide analog supply voltage range of 2.7V to 5.25V and a digital supply voltage of 1.7V to 3.6V. The device boasts low power consumption of 335 µW/channel, low input-referred noise of 8 µV PP (at 150-Hz BW, G = 6), and a low input bias current of 200 pA. The data rate can be configured from 125 SPS to 8 kSPS, with a high CMRR of 120 dB.

Programmable gain options include 1, 2, 3, 4, 6, 8, or 12. The ADS1292IPBS also features built-in right leg drive amplifier, lead-off detection, and test signals. It is available in a 32-TQFP package suitable for surface mounting.

This AFE integrates essential features for portable, low-power biopotential measurement systems, simplifying design and reducing component count.