AD5625BCPZ-REEL7

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AD5625BCPZ-REEL7 Application Field and Working Principle

The AD5625BCPZ-REEL7 is a low power, 10-bit voltage output Digital to Analog Converter (DAC) that operates from a single 2.7 V to 5.5 V power supply. Its dual architecture (unipolar and bipolar) allows the simultaneous conversion of two independent voltage signals into two, true 10-bit analog outputs with different voltage ranges (unipolar 0 V to VREF and bipolar -VREF to +VREF). The AD5625BCPZ-REEL7 is specified over the extended temperature range of -40°C to +125°C.

The AD5625BCPZ-REEL7a is designed for use in applications including industrial instrumentation, precision measurement and control interface, and motor control and stabilization. Thanks to its low power consumption of only 190µA, the device is also suitable for applications where low quiescent current is essential. The 10-bit resolution and 0.25LSB DNL ensure a high dynamic performance, ensuring smooth and accurate output at low power.

The AD5625BCPZ-REEL7 works on the principle of pulse width modulation with the analog input signal. This signal is converted from a digital binary code to an analog voltage using a high speed ramp generator. The ramp signal is compared with the input digital code and used to control the output voltage. The output voltage is equal to the sum of each pulse width at the reference voltage. The resolution of the output voltage is determined by the number of pulses. The AD5625BCPZ-REEL7 has a 10-bit resolution, meaning it can generate more than 1,000 arbitrary levels of voltage.

The DAC also includes a power-on reset circuit which ensures that the outputs are in a known state after power has been applied, along with a power-down control feature whereby the power consumption of the device can be reduced to almost zero (1 µA) when not needed. The device also supports remote programming, using SPI or I2C communication protocols. This feature allows the device to be programmed without direct access to the device itself, thus lowering system integration costs.

To ensure accurate digital-to-analog conversion and temperature stability, the AD5625BCPZ-REEL7 includes a number of features including an external reference voltage (VREF) up to 5.5V, a gain error of ≤3%, and an unloaded settling time of 3.5 µs.

Overall, the AD5625BCPZ-REEL7 is an ideal Digital to Analog Converter for a wide range of applications, from industrial instrumentation to motor control, with low power consumption and a very high level of precision for its 10-bit resolution.

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