AD7453ARTZ-REEL7

The AD7453ARTZ-REEL7 is a 12-bit, high-speed, low-power successive-approximation (SAR) analog-to-digital converter (ADC) from Analog Devices. It features a pseudo-differential analog input and operates from a single 2.7V to 5.25V power supply, achieving throughput rates up to 555 kSPS. The device includes a low-noise, wide-bandwidth differential track-and-hold amplifier (T/H) capable of handling input frequencies exceeding 1 MHz, with a typical -3 dB bandwidth of 20 MHz.

Key electrical specifications include a typical SINAD of 70 dB at a 100 kHz input frequency. The maximum power dissipation is 3.3 mW at 555 kSPS with a 3V supply and 7.25 mW at 555 kSPS with a 5V supply. The external reference voltage can be applied to the VREF pin and varied from 100 mV to 3.5 V, depending on the supply voltage and application requirements.

The conversion process and data acquisition are controlled using the CS and serial clock pins, allowing the device to interface with microprocessors or DSPs via a high-speed serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. The input signal is sampled on the falling edge of CS, and conversion is initiated at the same point. The SAR architecture ensures no pipeline delays.

The AD7453ARTZ-REEL7 is housed in an 8-lead SOT-23 package and is designed for surface mount mounting. It is specified for an industrial temperature range of -40°C to +85°C. A power-down mode reduces the supply current to a maximum of 1 µA.