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Description:

The ADPD7000BCBZ is a highly integrated analog front end (AFE) designed to measure a wide range of vital signs signals.

The ADPD7000 has a transceiver optical channel with up to eight leds that excite and measure the return signal on four current inputs. Signal chain suppression of misalignment and interference without optical filters or external DC elimination circuits. ECG signal acquisition ensures low noise diagnostic level measurements in a variety of interference sources, with a drive reference for common-mode rejection and lead break detection for the drop electrode.

Feature

Multi-mode analog front end

Optical channel

4 input channels, with a variety of operating modes, suitable for various sensor measurements

4-channel processing with synchronous sampling

12 programmable time slots for synchronous sensor measurements

Flexible input multiplexing for single-end sensor measurement

8 LED drivers, can drive 2 of them at the same time

Flexible sampling rate: 0.004Hz to 9kHz (using internal oscillator)

Ac environment light suppression: 78dB to 100Hz

Total LED peak driving current: 400mA

Independent environment eliminates DAC when TIA input, 9-bit control up to 300μA

Independent LED DC eliminates DAC when TIA input, 7-bit control up to 190μA

ECG channel

RTI noise at diagnostic bandwidth: <1µV RMS

High input impedance: 20GΩ

Accepts DC differential input range up to ±1.2V

CMRR: 115dB

Flexible 4-electrode configuration to support a variety of applications

Ac lead break detection and DC lead break detection

Supports normally open, low power consumption, and lead on-detection

BIA channel

Low power consumption, high precision excitation path

Configurable excitation frequency up to 250kHz

Sine-wave excitation with 12-bit DAC

High precision, large unbalance contact impedance ≤20kΩ

Configurable receiving filter with low noise design

Complex impedance measuring engine

Integrated current limiting resistor

EDA channel

Support voltage and current excitation

The measurement range is 10kΩVAC to 100MΩ with a resolution of 1nS

DFT and extraction to achieve high precision measurement results

Support SPI communication

704 bytes FIFO

Applications

Wearable health and fitness monitors: heart rate, heart rate variability, pulse oxygen saturation, body impedance analysis, hydration analysis and sleeveless non-invasive blood pressure measurement

Clinical patient monitor: small bedside patient monitor, home portable patient monitor, small remote patient monitor

Industrial monitoring: Particle, aerosol and gas detection

Electrical conductivity detection