AD9059BRS-REEL

Overview

The AD9059BRS-REEL is a dual-channel, 8-bit analog-to-digital converter (ADC) manufactured by Analog Devices Inc. It operates at a maximum sampling rate of 60 MSPS with a typical full-power analog bandwidth of 120 MHz. The device integrates an internal 2.5 V voltage reference and dual track-and-hold circuits, requiring only a single 5 V analog supply and a 3 V to 5 V digital supply. It features parallel 8-bit outputs compatible with TTL/CMOS logic, simultaneous channel sampling via a single encode input, and a power-down mode reducing consumption below 12 mW. The component is housed in a 28-lead shrink small outline package (SSOP).

Feature Summary

• Dual-channel architecture with simultaneous sampling controlled by a single encode clock.
• Integrated 2.5 V bandgap voltage reference and high-speed track-and-hold circuits.
• Low power dissipation with a dedicated power-down function for energy conservation.
• Flexible digital interface supporting both 3 V and 5 V logic families.

Applications

• Digital communications systems including QAM demodulators.
• RGB and YC/composite video processing digitizers.
• Medical imaging equipment requiring multiple synchronized ADC channels.
• Direct IF sampling receiver architectures.

Procurement Notes

Verify the REEL suffix indicates tape-and-reel packaging rather than tube packaging when sourcing components. Confirm that the specific revision matches the required manufacturing date code. Ensure ESD precautions are observed during handling due to the sensitivity of the BiCMOS process. Validate that the operating temperature range meets the industrial specifications of -40°C to +85°C for the intended environment.

Selection Notes

Select this component when dual-channel synchronization is required within a single footprint. Consider the AD9057 if only a single channel is needed, as it utilizes the same core but in a smaller 20-lead package. Evaluate the 120 MHz analog bandwidth against the Nyquist requirements of the input signal frequency. Assess the power budget to ensure the 400 mW typical dissipation fits within the thermal constraints of the enclosure.

Part Context

The AD9059 belongs to a family of low-cost, high-speed monolithic ADCs designed for ease of use. It shares its conversion core with the single-channel AD9057. The device utilizes a proprietary MagAmp gray code conversion combined with flash technology to achieve 8-bit accuracy at 60 MSPS. This architecture minimizes external component count by integrating references and drivers.

Replacement Considerations

The AD9057 serves as the single-channel equivalent using the identical ADC core. For pin-compatible replacements, verify if other dual-channel 8-bit ADCs from the manufacturer support the same SSOP-28 footprint and 60 MSPS speed class. Cross-reference timing parameters such as aperture delay and propagation delay to ensure system compatibility.