ADX912AQFN32
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Two low-noise PGAs and two 16-bit high-precision ADCs simulate the ECG front-end.
Product details
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Parameters
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Characteristics
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Package
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Description
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Two PGAs and two 16-bit high-precision ADCs
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SPI communication with a sampling rate of 8 Ksps.
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-40°C to +85°C
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• Three low-noise PGAs and two high-resolution ADCs
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• Input-referred noise: 24 μVPP (Gain = 6).
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• Input bias current: 800 pA.
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• Data rate: 125 SPS to 8 kSPS.
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• Common Mode Rejection Ratio
-100dB
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• Programmable gain: 1, 2, 3, 4, 6, 8, or 12
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• Power supply: Single or dual rail.
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Analog power supply
2.7V to 5.5V
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digital power supply
1.65V to 3.6V
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• Built-in right leg drive amplifier, lead-off detection, test signal.
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• Integrated Analog PACE Measurement (ADX912)
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• Built-in Oscillator and Reference
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• Power supply monitoring, internal temperature sensor, and over-range detection
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• Flexible power-down and standby modes
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• SPI™ compatible serial interface with timeout reset functionality
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• Supports systems compliant with IEC 60601-2-47 standard
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• Operating temperature range
-40°C to 85°C
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QFN32 4mm x 4mm
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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 encompasses all the necessary functions typically required in portable low-power medical electrocardiogram (ECG) applications, as well as in sports and fitness monitoring. Due to its high level of integration and outstanding performance, the ADX911/2 significantly reduces the size, power consumption, and overall cost of scalable medical instrument systems. Each channel of the ADX911/2 is equipped with a flexible input multiplexer, allowing independent connection to internally generated signals for purposes such as testing, temperature monitoring, and lead-off detection. Additionally, any input channel can be configured to capture the right leg drive (RLD) output signal. The ADX911/2 supports a maximum data rate of up to 8kSPS. Lead-off detection is implemented internally through the use of a current excitation source. The device operates within a temperature range of -40°C to 85°C.
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