AD7911ARMZ-REEL7

Overview

The AD7911ARMZ-REEL7 is a dual-channel, 10-bit successive approximation analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates from a single supply voltage ranging from 2.35 V to 5.25 V and supports throughput rates up to 250 kSPS. The device features an internal track-and-hold amplifier with a wide input bandwidth capable of handling frequencies exceeding 6 MHz. It utilizes a flexible serial interface compatible with SPI, QSPI, MICROWIRE, and DSP standards. Power consumption is optimized for battery-powered applications, dissipating approximately 4 mW at 250 kSPS with 3 V supplies. The component is housed in an 8-lead MSOP package.

Feature Summary

• Dual-channel architecture with on-chip multiplexing and track-and-hold amplifier
• Low power operation with dedicated full power-down mode for energy efficiency
• Flexible serial interface supporting multiple standard communication protocols
• Internal reference derived directly from the power supply rail

Applications

• Battery-powered personal digital assistants and mobile communications devices
• Medical instruments requiring low power consumption
• Data acquisition systems and instrumentation control
• High-speed modems and optical sensor interfaces

Procurement Notes

Verify the specific ordering suffix REEL7 corresponds to the reel packaging format required for your assembly line. Confirm that the A Grade temperature range meets your operational environment specifications. Ensure compatibility with the 8-lead MSOP footprint during PCB layout. Cross-reference the manufacturer part number with authorized distributors to validate authenticity and current availability status.

Selection Notes

Select this component when a dual-channel ADC with 10-bit resolution and 250 kSPS throughput is required. It is suitable for designs constrained by space due to the compact MSOP package. Consider this part if the system requires an internal reference derived from VDD to simplify external circuitry. Evaluate power requirements against the specified dissipation rates at different supply voltages and clock speeds.

Part Context

This component belongs to the AD7911/AD7921 family of high-speed, low-power ADCs. The AD7911 variant specifically provides 10-bit resolution, whereas the AD7921 offers 12-bit resolution within the same package and pinout configuration. Both variants share identical electrical characteristics regarding speed, power, and interface protocols, differing primarily in conversion precision.

Replacement Considerations

The AD7921ARMZ serves as a direct functional substitute offering higher 12-bit resolution while maintaining the same package and interface. Other members of the AD7911 series may be considered if different packaging options are required.