Analog Devices Inc. AD7890BNZ-2 Precision ADC

The AD7890BNZ-2 is a high-performance, low-power, 12-bit analog-to-digital converter (ADC) from Analog Devices Inc., an industry leader in high-performance semiconductors. This precision ADC is designed for direct connection to a wide variety of sensors and offers a multiplexed eight-channel configuration, making it an excellent choice for multi-channel data acquisition systems.

With its 2.5 MSPS (million samples per second) throughput rate, the AD7890BNZ-2 is well-suited for applications that require high-speed data conversion without sacrificing accuracy. The device operates from a single 5 V power supply and features a high impedance analog input, which minimizes the need for external buffer amplifiers and simplifies system design.

The AD7890BNZ-2 incorporates advanced design techniques to achieve very low power dissipation at high throughput rates. It also includes a track/hold amplifier, which provides a sampling time of 1.5 µs, allowing for precise data capture. The internal 2.5 V reference voltage ensures consistent performance, but the device can also accommodate an external reference to provide flexibility in system design.

Interfacing with microprocessors is straightforward due to the AD7890BNZ-2's parallel interface. It offers a choice of two interface modes: standard and byte. In the standard mode, all 12 bits of data are output simultaneously, while in byte mode, data is output as two 8-bit bytes, making it compatible with 8-bit microprocessors.

The AD7890BNZ-2 features a power-down mode, which reduces power consumption significantly when the converter is not in use, making it ideal for power-sensitive applications. Additionally, the device is packaged in a 24-pin narrow DIP (Dual In-line Package), which ensures compatibility with standard PCB (printed circuit board) layouts and easy integration into existing designs.

Overall, the AD7890BNZ-2 from Analog Devices Inc. represents a blend of performance, power efficiency, and ease of use, suitable for a broad range of applications such as process control, medical instrumentation, and battery-powered devices.