Analog Devices Inc. AD9057BRSZ-RL40

Overview

AD9057BRSZ-RL40 from Analog Devices is an 8-bit, 40 MSPS monolithic analog-to-digital converter with 120 MHz full-power analog bandwidth, internal 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 for QAM demodulator and RGB video digitizer applications.

For engineers reviewing the AD9057BRSZ-RL40 datasheet, AD9057BRSZ-RL40 pinout, AD9057BRSZ-RL40 application, or AD9057BRSZ-RL40 equivalent, key selection considerations include its 40 MSPS encode rate, 1 V_p-p analog input range centered at 2.5 V, power-down mode (<10 mW), TTL/CMOS-compatible encode input, and 20-lead SSOP package with verified pin mapping.

Technical Context

The AD9057BRSZ-RL40 implements a MagAmp/Flash hybrid architecture with three-stage pipelining, enabling 40 MSPS conversion while maintaining 8-bit accuracy and low aperture jitter (5 ps rms). Its on-chip track-and-hold captures analog signals on the rising edge of the ENCODE input, and internal gray-code decoding ensures monotonic output alignment.

It integrates a bandgap-based 2.5 V reference with ±10 ppm/°C tempco and 300 mA drive capability, supporting both internal reference use (VREF OUT → VREF IN) and external gain adjustment (±10% via VREF IN). Digital outputs are isolated from analog supplies, allowing independent 3 V or 5 V logic interfacing without noise coupling.

Key Specifications

Pinout & Package

The AD9057BRSZ-RL40 is housed in a 20-lead shrink small outline package (SSOP, RS-20), 7.8 mm × 5.3 mm body size, 0.65 mm lead pitch, JEDEC MO-150AE compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9057BRSZ-60 and ADS820U, the AD9057BRSZ-RL40 uniquely balances 40 MSPS throughput, integrated 2.5 V reference, and 120 MHz analog bandwidth in a space-constrained SSOP package-making it optimal for cost-sensitive, medium-speed digitization where board area and BOM count are critical.

Availability

AD9057BRSZ-RL40 is available at Aetrix Electronics and suitable for digital communications infrastructure, RGB video capture systems, and medical imaging equipment requiring stable component supply over extended production lifecycles.

Supply support for AD9057BRSZ-RL40 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, monolithic ADCs for medium-speed digitization in communications, video, and instrumentation-designed to reduce system complexity through integrated references and track-and-hold functionality.

FAQ

What is the maximum analog input frequency supported by the AD9057BRSZ-RL40?

The AD9057BRSZ-RL40 has a full-power analog bandwidth of 120 MHz, meaning it maintains specified AC performance (e.g., SINAD ≥42 dB) for input frequencies up to 120 MHz. At 76 MHz input, it achieves 43.5 dB SINAD under 40 MSPS encode conditions, confirming usability well into VHF bands for direct IF sampling applications.

Does the AD9057BRSZ-RL40 require an external reference voltage?

No, the AD9057BRSZ-RL40 includes an internal 2.5 V bandgap reference (VREF OUT) that can be directly connected to VREF IN for standard operation. An external reference is optional and only needed when ±10% gain adjustment or improved temperature stability beyond ±10 ppm/°C is required.

What digital logic levels are compatible with the AD9057BRSZ-RL40 encode and output pins?

The ENCODE and PWRDN inputs accept TTL/CMOS logic with thresholds of 1.5 V (VIH min = 2.0 V, VIL max = 0.8 V), supporting 3 V and 5 V systems. Digital outputs D7–D0 are driven from VDD (3 V or 5 V), producing VOH ≥2.95 V (VDD = 3 V) or ≥4.95 V (VDD = 5 V), and VOL ≤0.05 V-ensuring robust interfacing with FPGAs and microcontrollers.

How does power-down mode affect the AD9057BRSZ-RL40's output behavior?

When PWRDN is asserted high, the AD9057BRSZ-RL40 disables its analog core and places D7–D0 in a high-impedance state within 200 ns. Total power drops to <10 mW, and the internal 2.5 V reference remains active to minimize wake-up latency. Valid output data resumes three encode cycles after PWRDN is deasserted.

Is the AD9057BRSZ-RL40 pin-compatible with other members of the AD9057 family?

Yes, all AD9057 variants-including AD9057BRSZ-40, AD9057BRSZ-60, and AD9057BRSZ-80-share identical 20-lead SSOP (RS-20) packaging and pinout. The only differences are guaranteed maximum encode rates (40/60/80 MSPS) and corresponding dynamic performance specifications; no PCB redesign is needed when upgrading within the family.