AD7701BNZ ADC: Pinout, Specification, and Datasheet

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The analog input is continuously sampled by an analog modulator whose mean output duty cycle is proportional to the input signal. The modulator output is processed by an on-chip digital filter with a six-pole Gaussian response, which updates the output data register with 16-bit binary words at word rates up to 4 kHz. The sampling rate, filter corner frequency, and output word rate are set by a master clock input that may be supplied externally, or by a crystal-controlled on-chip clock oscillator. 

The inherent linearity of the ADC is excellent and endpoint accuracy is ensured by self-calibration of zero and full scale, which may be initiated at any time. The self-calibration scheme can also be extended to null system offset and gain errors in the input channel. 

The output data is accessed through a flexible serial port, which has an asynchronous mode compatible with UARTs and two synchronous modes suitable for interfacing to shift registers or the serial ports of industry-standard microcontrollers. CMOS construction ensures low power dissipation, and a power-down mode reduces the idle power consumption to only 10 µW.

Monolithic 16-bit ADC 

0.0015% linearity error 

On-chip self-calibration circuitry 

Programmable low-pass filter 

0.1Hz to 10Hz corner frequency 

0V to +2.5V or ±2.5V analog input range 

4 kSPS output data rate 

Flexible serial interface 

Ultralow power

The AD7701 offers a 16-bit resolution coupled with outstanding 0.0015% accuracy. 

No missing codes ensure true, usable, 16-bit dynamic range, removing the need for programmable gain and level-setting circuitry. 

The effects of temperature drift are eliminated by on-chip self-calibration, which removes zero and gain error. External circuits can also be included in the calibration loop to remove system offsets and gain errors.

A flexible synchronous/asynchronous interface allows the AD7701 to interface directly to UARTs or to the serial ports of industry-standard microcontrollers. 

Low operating power consumption and an ultralow-power standby mode makes the AD7701 ideal for loop-powered remote sensing applications, or battery-powered portable instruments.

Industrial process control 

Weigh scales 

Portable instrumentation 

Remote data acquisition

Analog Devices Inc. AD7701BNZ technical specifications, attributes, parameters and parts with similar specifications to Analog Devices Inc. AD7701BNZ.

Analog Devices (NASDAQ: ADI) is a world leader in the design, manufacture, and marketing of a broad portfolio of high performance analog, mixed-signal, and digital signal processing (DSP) integrated circuits (ICs) used in virtually all types of electronic equipment. Since our inception in 1965, we have focused on solving the engineering challenges associated with signal processing in electronic equipment. Used by over 100,000 customers worldwide, our signal processing products play a fundamental role in converting, conditioning, and processing real-world phenomena such as temperature, pressure, sound, light, speed, and motion into electrical signals to be used in a wide array of electronic devices.