AD7470ARUZ

Analog To Digital Converters (ADC) Overview

The AD7470ARUZ is a 10-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices. It operates on a single 2.7 V to 5.25 V supply and achieves throughput rates up to 1.75 MSPS. The device features a low-noise, wide-bandwidth track-and-hold amplifier capable of handling input frequencies exceeding 1 MHz. Power consumption is typically 3.34 mW at 1.5 MSPS with 3 V supplies and 7.97 mW at 1.75 MSPS with 5 V supplies. It utilizes a high-speed parallel interface for data access and includes an auto sleep mode for power management.

Analog To Digital Converters (ADC) Feature Summary

• 10-bit resolution with 1.75 MSPS maximum throughput rate
• Low power consumption: 3.34 mW typ at 1.5 MSPS (3 V) and 7.97 mW typ at 1.75 MSPS (5 V)
• Wide input bandwidth track-and-hold amplifier supporting >1 MHz input frequencies
• High-speed parallel digital interface with standard control inputs (CS, RD, CONVST)

Analog To Digital Converters (ADC) Applications

• Microprocessor and DSP interfacing requiring fast data acquisition
• Battery-powered systems utilizing flexible power/throughput rate management
• Industrial control systems operating within -40°C to +85°C temperature range

Analog To Digital Converters (ADC) Procurement Notes

Verify the specific package variant RU-24 (TSSOP) matches the design requirements. Confirm that the external reference voltage applied to REF IN is maintained within ±1% of 2.5 V for specified performance. Ensure supply voltages AVDD and DVDD do not exceed the 0.3 V differential limit during transients.

Analog To Digital Converters (ADC) Selection Notes

Select this component when a 10-bit resolution is sufficient for the application, as opposed to the 12-bit AD7472. The AD7470 offers higher throughput (1.75 MSPS vs 1.5 MSPS) due to its shorter conversion time of 12 clock cycles compared to the AD7472's 14 cycles. Ensure the system can provide the required master clock frequency (up to 30 MHz at 5 V).

Analog To Digital Converters (ADC) Part Context

The AD7470ARUZ belongs to the AD7470/AD7472 family of high-speed, low-power SAR ADCs. It shares the same functional block diagram and interface protocols as the AD7472 but differs in resolution and maximum sampling speed. The 'ARU' suffix indicates the A-grade temperature range (-40°C to +85°C) and the TSSOP-24 package.

Analog To Digital Converters (ADC) Replacement Considerations

The AD7472ARUZ is a direct pin-compatible alternative offering 12-bit resolution but with a lower maximum throughput of 1.5 MSPS. Other variants include AD7470ARU (tube packaging) or AD7470ARUZ-REEL7 (reel packaging).