AD9051BRSZRL-2V

Overview

The AD9051BRSZRL-2V is a 10-bit, 60 MSPS analog-to-digital converter (ADC) 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 electrical parameters include a typical SNR of 58.15 dB at 60 MSPS, 250 mW power dissipation, and a nominal 2.5 V internal reference. It supports industrial temperature ranges from -40°C to +85°C.

Feature Summary

• Integrates a high-speed differential track-and-hold amplifier and a stable 2.5 V bandgap voltage reference on-chip.
• Utilizes a subranging architecture with digital error correction to ensure true 10-bit accuracy.
• Provides configurable analog input bandwidth selection between 50 MHz and 130 MHz.
• Features latched parallel digital outputs compatible with both 3 V and 5 V logic families.

Applications

• Medical imaging systems
• Digital communications equipment
• Professional video processing
• Instrumentation and test equipment

Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm RoHS compliance status and reel packaging specifications. Ensure that the BOM matches the exact RS-28 package variant required for the PCB footprint. Cross-reference the revision history to confirm the datasheet version aligns with the component batch being procured.

Selection Notes

Select this component when a monolithic 10-bit ADC with integrated reference and T/H is required for space-constrained designs. Consider the 50 MHz vs. 130 MHz bandwidth options based on the Nyquist frequency requirements of the input signal. Evaluate the 3 V logic interface capability if system power consumption needs to be minimized by reducing output swing voltage.

Part Context

This part belongs to the AD9051 family of 10-bit, 60 MSPS sampling ADCs manufactured by Analog Devices. The family includes variants with different packaging options and RoHS compliance levels. The 'BRS' designation indicates the 28-lead Shrink Small Outline Package (SSOP), while 'Z' denotes RoHS compliance. The '-2V' suffix specifies the input range and output coding configuration.

Replacement Considerations

Direct replacements within the same family include AD9051BRSZ and AD9051BRSZRL. Verify pinout compatibility and logic voltage levels when substituting. Note that non-RoHS versions may require environmental compliance adjustments.

FAQ

How is the input bandwidth selected?

The input bandwidth is selected using the BWSEL pin. Connecting this pin to ground enables the 130 MHz nominal bandwidth, while connecting it to VD enables the 50 MHz nominal bandwidth.

Can the AD9051 operate with 3 V logic?

Yes, the digital outputs can interface directly with 3 V logic systems by connecting the isolated VDD pins (Pins 20 and 22) to the 3 V supply. The encode clock input is TTL compatible and works with 3 V CMOS logic.

What happens if the analog input exceeds the nominal range?

If the analog input goes out of the nominal range (1.875 V to 3.125 V), the input buffer clamps the signal, and the digital outputs lock to their maximum or minimum values (all 1s or all 0s). The OR pin goes high to indicate an out-of-range condition.