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
