ADI AD7771BCPZ

2432k8Дифференциальный, односторонний±1,65 В, 2,2 В ~ 3,6 В1,8 В ~ 3,6 В-40°C ~ 125°C

Overview

The AD7771BCPZ is an 8-channel, simultaneous sampling analog-to-digital converter (ADC). Eight full Σ-Δ ADCs are on-chip. The AD7771BCPZ provides an ultralow input current to allow direct sensor connection. Each input channel has a programmable gain stage allowing gains of 1, 2, 4, and 8 to map lower amplitude sensor outputs into the full-scale ADC input range, maximizing the dynamic range of the signal chain. The AD7771BCPZ accepts a VREF voltage from 1 V up to 3.6 V. The analog inputs accept unipolar (0 V to VREF) or true bipolar (±VREF/2 V) analog input signals with 3.3 V or ±1.65 V analog supply voltages, respectively. The analog inputs can be configured to accept true differential or single-ended signals to match different sensor output configurations.

Note that throughout this data sheet, certain terms are used to refer to either the multifunction pins or a range of pins. The multifunction pins, such as DCLK0/SDO, are referred to either by the entire pin name or by a single function of the pin, for example, DCLK0, when only that function is relevant. In the case of ranges of pins, AVSSx refers to the following pins: AVSS1A, AVSS1B, AVSS2A, AVSS2B, AVSS3, and AVSS4.

Features

Applications

• Digital Multimeters, PLC's (Programming Logic Controllers)
• RADAR processing, digital oscilloscopes
• CMOS Image sensors for mobile applications
• Medical Instrumentation and medical imaging
• Music recording
• Digital signal processing
• Scientific instruments
• Rotary encoder
• Displaying
• Transducer