ADS1299IPAGR POWER CHIPS

The **Texas Instruments ADS1299-x** (including ADS1299IPAGR) is a family of ultra-low-noise, 24-bit, simultaneous-sampling delta-sigma (ΔΣ) analog-to-digital converters (ADCs) with 4, 6, or 8 channels, specifically designed for biopotential measurement applications such as EEG, ECG, and other medical instrumentation.

Featuring an integrated analog front-end (AFE), each channel includes a low-noise programmable gain amplifier (PGA), internal reference, on-chip oscillator, bias drive amplifier, lead-off detection, and test signal generation.

**Key Specifications:**
– Resolution: 24 bits
– Channels: 4 / 6 / 8 (model dependent)
– Input-referred noise: 1 μVPP (typ., 70 Hz bandwidth)
– SNR: 121 dB (typ.)
– Programmable gain: 1, 2, 4, 6, 8, 12, 24
– Data rate: 250 SPS to 16 kSPS
– Input bias current: 300 pA (typ.)
– CMRR: –110 dB (typ.)
– Gain drift: 3 ppm/°C (typ.)
– Internal reference: 4.5 V, drift 35 ppm/°C (typ.)
– Supply voltage:
– Analog: 4.75 V to 5.25 V
– Digital: 1.8 V to 3.6 V
– Interface: SPI-compatible serial interface
– Power-down / standby modes for flexible power management
– Operating temperature: –40 °C to +85 °C
– Package: TQFP-64 (ADS1299IPAGR)

**Integrated Features:**
– Up to 8 low-noise PGAs + 8 simultaneous-sampling 24-bit ADCs
– On-chip 2.048 MHz oscillator (or external clock support)
– Lead-off detection, bias (right-leg) drive amplifier, test signals
– Pin-compatible with broader ADS129x family

**Target Applications:**
– Electroencephalography (EEG) research and medical systems
– Electrocardiography (ECG), including fetal ECG
– Polysomnography / sleep studies
– Bispectral Index (BIS) monitoring
– Evoked potential (EP) measurements
– Other high-precision, low-noise biopotential acquisition systems

The ADS1299-x series delivers industry-leading noise performance and integration, making it the preferred choice for demanding medical and research-grade biopotential front-ends requiring high resolution, low power, and robust signal integrity.