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ADX911AQFN32

  • A low-noise PGA and a 16-bit high-precision ADC analog ECG front-end

Product details

  • Parameters

  • Characteristics

  • Package

  • Description

    • One PGA and one 16-bit high-precision ADC.

    • SPI communication with a sampling rate of 8 Ksps.

    • -40°C to +85°C

    • • Three low-noise PGAs and two high-resolution ADCs.

    • • Input-referred noise: 24 μVPP (Gain = 6).

    • • Input bias current: 800 pA.

    • • Data rate: 125 SPS to 8 kSPS.

    • • Common Mode Rejection Ratio

      -100dB

    • • Programmable gain: 1, 2, 3, 4, 6, 8, or 12

    • • Power supply: Single or dual rail.

    • Analog power supply

      2.7V to 5.5V

    • digital power supply

      1.65V to 3.6V

    • • Built-in right leg drive amplifier, lead-off detection, test signal.

    • • Integrated Analog PACE Measurement (ADX912)

    • • Built-in Oscillator and Reference

    • • Power supply monitoring, internal temperature sensor, and over-range detection

    • • Flexible power-down and standby modes

    • • SPI™ compatible serial interface with timeout reset functionality

    • • Supports systems compliant with IEC 60601-2-47 standard

    • • Operating temperature range

      -40°C to 85°C

    • QFN32 4mm x 4mm

  • The ADX911/2 is a multi-channel, simultaneous sampling, 16-bit Delta-Sigma (ΔΣ) analog-to-digital converter (ADC) featuring an integrated programmable gain amplifier (PGA), internal reference, and onboard oscillator. The ADX911/2 incorporates all the functionalities typically required in portable, low-power medical electrocardiogram (ECG) applications, as well as in sports and fitness monitoring. With its high level of integration and exceptional performance, the ADX911/2 significantly reduces the size, power consumption, and overall cost of creating scalable medical instrumentation systems. 

    Each channel of the ADX911/2 is equipped with a flexible input multiplexer, allowing independent connection to internally generated signals for testing, temperature monitoring, and lead-off detection. Additionally, any input channel can be configured to capture the right leg drive (RLD) output signal. The device supports data rates of up to 8 kSPS. Lead-off detection is implemented internally using a current excitation source. The operating temperature range of the ADX911/2 is -40°C to 85°C.


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