Analog Devices Inc. AD9057BRSZ-80

Overview

AD9057BRSZ-80 from Analog Devices is an 8-bit, 80 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 41.5 dB SINAD at 76 MHz input while consuming 220 mW typical power. It is used in direct IF sampling receivers and RGB video digitizers where high-speed, low-power conversion is required.

For engineers reviewing the AD9057BRSZ-80 datasheet, AD9057BRSZ-80 pinout, AD9057BRSZ-80 application, or AD9057BRSZ-80 equivalent, key selection criteria include guaranteed 80 MSPS conversion rate, ±0.75 LSB differential nonlinearity at 25°C, 5 ps rms aperture jitter, 1 V_p-p analog input range centered at 2.5 V, and operation across –40°C to +85°C industrial temperature range.

Technical Context

The AD9057BRSZ-80 implements a MagAmp/Flash hybrid architecture with three-stage pipelining, enabling 80 MSPS sustained throughput and deterministic 3-clock-cycle output latency. Its track-and-hold holds the analog input on the rising edge of ENCODE, and conversion uses offset binary coding referenced to an internal or external 2.5 V source.

It features TTL/CMOS-compatible ENCODE and PWRDN inputs, high-impedance digital outputs in power-down mode (<10 mW), and independent VD (5 V) and VDD (3 V or 5 V) supplies to isolate analog and digital noise domains. The BIAS OUT pin provides a 1 kΩ path to VREF IN for AC-coupled input biasing without external components.

Key Specifications

Pinout & Package

The AD9057BRSZ-80 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, high-speed ADC applications.

Compared with AD9057BRSZ-60 and ADS820U, the AD9057BRSZ-80 uniquely combines 80 MSPS speed, on-chip reference, integrated T/H, and SSOP packaging-enabling drop-in replacement in IF-sampling designs without layout changes or bill-of-material adjustments.

Availability

AD9057BRSZ-80 is available at Aetrix Electronics and suitable for digital communications infrastructure, RGB video digitization, and medical ultrasound requiring stable component supply over extended production lifecycles.

Supply support for AD9057BRSZ-80 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, Inc. 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 high-speed digitization in communications, video, and instrumentation-designed to replace multichip solutions with single-package integration.

FAQ

What is the guaranteed maximum conversion rate for AD9057BRSZ-80?

The AD9057BRSZ-80 is fully specified and production-tested to operate at 80 MSPS across the industrial temperature range (–40°C to +85°C). This maximum rate is confirmed in the Ordering Guide and Electrical Specifications table under "Maximum Conversion Rate" with "Full" temperature condition and "VI" test level, meaning it is guaranteed by design and characterization testing.

Does AD9057BRSZ-80 require an external reference voltage?

No, the AD9057BRSZ-80 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 used only when tighter accuracy, improved temperature stability, or programmable gain adjustment (±10%) is required. The internal reference is sufficient for most QAM demodulator and video digitizer applications.

What digital logic levels does AD9057BRSZ-80 support on its outputs?

The AD9057BRSZ-80 supports both 3 V and 5 V CMOS logic levels on its D7–D0 outputs, controlled by the voltage applied to the VDD pin. When VDD = 3 V, logic high is ≥2.95 V; when VDD = 5 V, logic high is ≥4.95 V. Inputs (ENCODE, PWRDN) are TTL/CMOS compatible with 1.5 V threshold, ensuring interoperability with diverse controller families.

How does power-down mode affect the digital outputs of AD9057BRSZ-80?

In power-down mode (PWRDN = logic high), the AD9057BRSZ-80 disables its analog core and digital output buffers, driving D7–D0 into a high-impedance state within 200 ns. Total power dissipation drops to <10 mW. The internal 2.5 V reference remains active to minimize wake-up latency; valid output data resumes three encode cycles after PWRDN returns low.

What package type and footprint does AD9057BRSZ-80 use?

The AD9057BRSZ-80 uses a 20-lead shrink small outline package (SSOP), designated RS-20 per Analog Devices' ordering guide. Its dimensions are 7.8 mm × 5.3 mm body size with 0.65 mm lead pitch, JEDEC MO-150AE compliant. This package is pin-compatible with other AD9057 variants (e.g., AD9057BRSZ-40 and AD9057BRSZ-60), enabling speed-grade interchangeability on the same PCB.