Texas Instruments ADS119x 16-Bit Analog Front-End (AFE) Devices

Texas Instruments ADS119x 16-Bit Analog Front-End (AFE) Devices for biopotential measurements enable the creation of scalable medical instrumentation systems at significantly reduced size, power, and overall cost. These low-power devices have a flexible input multiplexer per channel that can be independently connected to the internally generated signals for test, temperature, and lead-off detection. The TI ADS119x devices operate at data rates as high as 8kSPS, allowing the implementation of software pace detection. The devices are designed for use in a variety of medical instrumentation, including patient monitoring (Holter, event, stress, and vital signs, including ECG, AED, and telemedicine) as well as evoked audio potential (EAP) and sleep study monitors.

Features

  • Four input channels (ADS1194) / six input channels (ADS1196)
  • Low power of 0.55mW/channel
  • 12µVPP (150Hz BW, G = 6) input-referred noise
  • 200pA input bias current
  • 125SPS to 8kSPS data rate
  • -105dB CMRR
  • 1, 2, 3, 4, 6, 8, or 12 programmable gain
  • Unipolar or bipolar supplies
  • 2.7V to 5.25V analog
  • 1.65V to 3.6V digital
  • Built-in right leg drive amplifier, lead-off detection, WCT, test-signals
  • Pace detection channel select
  • Built-in oscillator and reference
  • Flexible power-down, standby mode
  • SPI™- compatible serial interface
  • 0°C to +70°C operating temperature range

Applications

  • Patient monitoring: Holter, event, stress, and vital signs, including ECG, AED, telemedicine
  • EAPs and sleep study monitoring
  • High-precision, simultaneous, multichannel signal acquisition

Functional Block Diagram

Block Diagram - Texas Instruments ADS119x 16-Bit Analog Front-End (AFE) Devices
Publicerad: 2011-02-22 | Uppdaterad: 2025-06-25