TI ADS1191IPBSR

The ADS1191/2 are multichannel, simultaneously sampling, 16-bit Δ-Σ ADC series with built-in programmable gain amplifier (PGA), internal reference, and onboard oscillator. The ADS1191/2 incorporate all the features typically required for portable, low-power medical ECG, sports, and fitness applications. With their high level of integration and exceptional performance, the ADS1191/2 series enable the creation of scalable medical instrumentation systems while significantly reducing size, power consumption, and overall cost. The ADS1191/2 provide a highly flexible input multiplexer per channel, which can be independently connected to internally generated signals for test, temperature, and continuous lead-off detection. In addition, various configurations of the input channels can be selected to generate the right leg drive (RLD) output signal. The ADS1191/2 operate at a maximum data rate of 8kSPS. Continuous lead-off detection is performed internally using the device's internal excitation current sink/source. The device is available in a 5mm×5mm, 32-pin thin quad flat package (TQFP). Rated operating temperature range: -40°C to +85°C.

• 2 low-noise programmable gain amplifiers (PGA) and 2 high-resolution ADCs (ADS1192)
• Low power: 335μW per channel
• Input-referred noise: 24μVPP (150Hz BW, G = G)
• Input bias current: 1nA
• Data rate: 125SPS to 8kSPS
• CMRR: –95dB
• Programmable gain: 1, 2, 3, 4, 6, 8, or 12
• Supply: Unipolar or bipolar analog: 2.7V to 5.25V; digital: 1.7V to 3.6V
• Integrated right-leg drive amplifier, continuous lead-off detection, test signal
• Integrated oscillator and reference
• Highly flexible power-down and standby modes
• SPI-compatible serial interface
• Operating temperature range: -40°C to ±85°C

• Medical instruments (ECG) including: patient monitoring; Holter, event, stress, and vital signs including ECG, AED, telemedicine
• Sports and fitness (heart rate, respiration, and ECG)