Analog Devices Inc. AD9057BRSZ-40

Overview

AD9057BRSZ-40 from Analog Devices is an 8-bit, 40 MSPS monolithic analog-to-digital converter with 120 MHz full-power analog bandwidth, on-chip 2.5 V reference, and track-and-hold circuitry. It operates from a single 5 V analog supply and supports 3 V or 5 V digital I/O, delivering 45.5 dB SINAD at 10.3 MHz input-ideal for RGB video digitization and QAM demodulator front-ends.

For engineers reviewing the AD9057BRSZ-40 datasheet, AD9057BRSZ-40 pinout, AD9057BRSZ-40 application, or AD9057BRSZ-40 equivalent, this page provides verified specifications, validated pin functions, confirmed industrial-temperature operation (–40°C to +85°C), SSOP-20 package mapping, and two documented alternative grades within the same AD9057 family for sampling rate scalability.

Technical Context

The AD9057BRSZ-40 employs a MagAmp/Flash hybrid architecture with three-pipeline-stage output timing, enabling deterministic 4.0 ns output valid time (tV) and 9.5 ns propagation delay (tPD) at 40 MSPS. Its internal 2.5 V bandgap reference (±10 ppm/°C tempco) drives both ADC gain control and external biasing via BIAS OUT, while the TTL/CMOS-compatible ENCODE input samples on rising edges with 2.7 ns aperture delay and 5 ps rms jitter.

It integrates a 150 kΩ single-ended analog input with 2 pF capacitance and 16 µA max input bias current, supporting 1 V_p-p input range centered at 2.5 V. Power-down mode reduces dissipation to <10 mW and places D7–D0 in high-impedance state, with 200 ns wake-up latency before valid data appears.

Key Specifications

Pinout & Package

The AD9057BRSZ-40 is housed in a 20-lead shrink small outline package (SSOP, JEDEC MO-150AE, RS-20 footprint), 7.8 mm × 5.3 mm × 1.75 mm, with 0.65 mm lead pitch and gull-wing leads.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar 8-bit ADC applications.

Compared with AD9057BRSZ-40, the -60 and -80 variants offer higher sampling rates while maintaining identical pinout, reference behavior, and power-down functionality-making them drop-in upgrades where timing margins allow, but requiring validation of encode clock integrity and thermal management at elevated throughput.

Availability

AD9057BRSZ-40 is available at Aetrix Electronics and suitable for RGB video digitization, QAM demodulator front-ends, and medical ultrasound beamformers requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD9057BRSZ-40 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 AD9057 product line delivers cost-optimized, low-power 8-bit ADCs for embedded digitization in communications, imaging, and instrumentation-designed for ease of use with integrated references and minimal external components.

FAQ

What is the guaranteed operating temperature range for the AD9057BRSZ-40?

The AD9057BRSZ-40 is specified over the industrial temperature range of –40°C to +85°C. All DC accuracy, dynamic performance, and timing parameters in the datasheet are guaranteed across this full range, with test Level VI validation confirming operation at temperature extremes using design and characterization data.

Does the AD9057BRSZ-40 require an external reference voltage?

No, the AD9057BRSZ-40 includes an internal 2.5 V bandgap reference (VREF OUT) that can be directly connected to VREF IN for full-scale calibration. External reference is optional-only needed when ±10% gain adjustment or improved temperature stability beyond ±10 ppm/°C is required.

Can the AD9057BRSZ-40 interface directly with a 3 V FPGA I/O bank?

Yes, the AD9057BRSZ-40 supports 3 V digital I/O by applying 3 V to the VDD pin. Its D7–D0 outputs swing to 2.95 V (logic high) and 0.05 V (logic low) under load, meeting 3 V CMOS input thresholds. The ENCODE and PWRDN inputs also accept 3 V logic levels due to TTL-compatible thresholds.

What is the analog input impedance of the AD9057BRSZ-40?

The AD9057BRSZ-40 presents a single-ended analog input impedance of 150 kΩ in parallel with 2 pF capacitance. Input bias current is 6 µA typical at 25°C, centered near 2.5 V. This allows direct capacitive coupling using the internal BIAS OUT 1 kΩ resistor, eliminating external bias networks.

How does power-down mode affect the digital outputs of the AD9057BRSZ-40?

In power-down mode (PWRDN = logic high), the AD9057BRSZ-40 disables its analog core and drives all D7–D0 outputs to high-impedance state within 200 ns. Total power dissipation drops to <10 mW, and the internal 2.5 V reference remains active to minimize wake-up latency-valid data resumes three encode cycles after PWRDN returns low.