Analog Devices Inc. AD9051BRS

Overview

AD9051BRS from Analog Devices is a 10-bit, 60 MSPS monolithic analog-to-digital converter with integrated track-and-hold and on-chip 2.5 V bandgap reference. It operates from a single 5 V supply, supports 5 V or 3 V logic I/O, and offers selectable 50 MHz/130 MHz input bandwidth - enabling high-fidelity digitization in medical imaging and professional video signal chains.

For engineers reviewing the AD9051BRS datasheet, AD9051BRS pinout, AD9051BRS application, or AD9051BRS equivalent, this page delivers verified specifications, industrial-temperature SSOP package details, ENCODE-synchronized 10-bit parallel output timing, and validated alternatives for signal acquisition systems requiring ≥9.3 ENOB at 10.3 MHz input.

Technical Context

The AD9051BRS uses a two-step subranging architecture with digital error correction to guarantee true 10-bit accuracy and 9.3 effective number of bits (ENOB) at f_IN = 10.3 MHz. Its differential analog input is internally biased at 2.5 V, supporting both single-ended and differential drive without external biasing.

Five-pipeline-stage latency synchronizes output data to the rising edge of the ENCODE signal, while BWSEL pin selection configures nominal input bandwidth between 50 MHz (VD-connected) and 130 MHz (NC). The device features an out-of-range (OR) flag and clamped input protection rated from –0.5 V to +5.5 V.

Key Specifications

Pinout & Package

AD9051BRS is housed in a 28-lead Shrink Small Outline Package (SSOP), JEDEC MO-150-AH compliant, with 0.65 mm lead pitch and 10.2 mm × 5.3 mm body dimensions. Thermal pad not present; coplanarity ≤0.10 mm.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Compared with AD9051BRS, AD9050BRS trades 2 bits of resolution for lower cost and power, while ADS830IPW shifts integration burden to the system designer - making AD9051BRS the optimal choice for space-constrained, self-contained 10-bit digitization where reference stability and bandwidth flexibility matter.

Availability

AD9051BRS is available at Aetrix Electronics and suitable for medical imaging systems, digital communications infrastructure, and professional video equipment requiring stable component supply across extended product lifecycles.

Supply support for AD9051BRS includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.

The AD9051BRS belongs to Analog Devices' precision high-speed ADC product line, engineered for applications demanding low-power, single-supply digitization with integrated signal conditioning - especially where board space and design simplicity are critical.

FAQ

What is the absolute maximum analog input voltage range for the AD9051BRS?

The AD9051BRS analog inputs (AIN and AINB) tolerate –0.5 V to V_D + 0.5 V, or –0.5 V to +5.5 V under nominal 5 V supply conditions. This overvoltage protection prevents damage during transient overdrive, and internal clamping holds outputs at full-scale codes when input exceeds the 1.875 V to 3.125 V nominal range. The AD9051BRS maintains functional integrity within these limits without latch-up or permanent degradation.

Does the AD9051BRS require an external reference, or can it operate with its internal reference?

The AD9051BRS can operate fully autonomously using its internal 2.5 V bandgap reference (VREFOUT, Pin 3), which is connected to VREFIN (Pin 4) by default. An external 2.5 V reference may be applied to VREFIN for improved temperature drift, tighter initial accuracy, or gain matching across multiple AD9051BRS devices - but it is not required for basic operation. The AD9051BRS delivers specified performance with either configuration.

How does the BWSEL pin affect the AD9051BRS analog input bandwidth and noise performance?

When BWSEL (Pin 5) is left unconnected, the AD9051BRS analog front-end provides ~130 MHz nominal bandwidth; when tied to V_D, bandwidth reduces to ~50 MHz. The 50 MHz mode improves SNR by ~1.5 dB at mid-band frequencies due to reduced noise gain, while the 130 MHz mode preserves wideband fidelity for fast transient capture. Both modes maintain full 10-bit linearity and are user-selectable without changing AD9051BRS hardware.

Can the AD9051BRS digital outputs interface directly with 3 V logic systems?

Yes - the AD9051BRS digital outputs (D9–D0, OR) are CMOS-compatible and powered by dedicated V_DD pins (20, 22). Connecting V_DD to a clean 3 V supply configures all outputs for 3 V logic levels, eliminating level shifters. The ENCODE input remains TTL-compatible (1.5 V threshold), allowing direct drive from 3 V CMOS clocks. This dual-voltage capability is intrinsic to the AD9051BRS design and requires no external components.

What is the pipeline latency of the AD9051BRS, and how does it impact system timing?

The AD9051BRS has a fixed five-cycle pipeline delay from ENCODE rising edge to valid D9–D0 output. Data appears one propagation delay (t_PD) after the fifth ENCODE edge, with t_PD = 4.5 ns typical at 25°C and 3 V V_DD. This deterministic latency simplifies timing closure in synchronous systems - for example, a 60 MSPS clock yields 83.3 ns period, so output data aligns precisely at 416.5 ns post-trigger. The AD9051BRS timing is fully characterized across temperature and voltage.