AD9051BRS-2V

Overview

The AD9051BRS-2V is a 10-bit, 60 MSPS monolithic analog-to-digital converter in a 28-lead SSOP package. It features an onboard track-and-hold and voltage reference, operating on a single 5 V supply with 3 V or 5 V logic compatibility. The device offers selectable input bandwidths of 50 MHz or 130 MHz via the BWSEL pin. Key performance metrics include 9.3 effective number of bits at 10.3 MHz input frequency and 250 mW total power dissipation at maximum sampling rate. The BRS-2V variant specifies distinct digital output coding levels for out-of-range conditions compared to standard versions.

Feature Summary

• Integrates a high-speed differential track-and-hold amplifier and internal 2.5 V bandgap reference circuitry.
• Utilizes a two-step subranging architecture with digital error correction to ensure true 10-bit accuracy.
• Provides configurable analog input bandwidth selection between 50 MHz and 130 MHz modes.
• Includes out-of-range detection comparators that clamp digital outputs to valid extremes during signal overdrive.

Applications

• Medical imaging systems requiring high-resolution digitization
• Professional video processing equipment
• Digital communications infrastructure
• General-purpose instrumentation and data acquisition

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm RoHS compliance status and packaging type. Ensure the selected variant matches the required temperature range and logic interface specifications for the target application environment before finalizing procurement orders.

Selection Notes

Select this component when a low-power, single-supply 10-bit ADC is required for applications up to 60 MSPS. Consider the BRS-2V variant if specific out-of-range digital coding characteristics are mandated by the system design. Evaluate the need for external versus internal voltage references based on required gain accuracy and temperature stability constraints.

Part Context

This part belongs to the AD9051 family of complete sampling ADCs from Analog Devices. It is fabricated using a BiCMOS process to balance speed and power consumption. The device is designed for cost-sensitive, high-performance applications where board space is limited due to its surface-mount SSOP packaging.

Replacement Considerations

Direct functional substitutes within the same family include the AD9051BRS and AD9051BRSZ variants. Verify pinout compatibility and electrical parameter alignment, particularly regarding the digital output coding differences associated with the -2V suffix, before implementing any cross-model replacements.

FAQ

How is the analog input bandwidth configured?

The bandwidth is selected via the BWSEL pin. Leaving it unconnected (NC) sets the nominal bandwidth to 130 MHz, while connecting it to VD sets it to 50 MHz.

What is the function of the OR pin?

The OR (Out of Range) pin indicates when the analog input signal exceeds the nominal input range. It outputs a logic '1' when out of range and a logic '0' when within the nominal range.

Can the AD9051BRS-2V interface directly with 3 V logic?

Yes, the digital outputs can interface with 3 V logic by connecting the isolated VDD pins (Pins 20 and 22) to the 3 V supply rail, while the encode clock input remains TTL compatible.