Analog Devices Inc. AD9288BSTZRL-40

Overview

AD9288BSTZRL-40 from Analog Devices is a dual 8-bit analog-to-digital converter optimized for I/Q sampling in communications systems and portable test equipment. It delivers 40 MSPS per channel, 475 MHz analog bandwidth, 47 dB SNR at 41 MHz input, 1 V_p-p differential input range, and operates from a single 3.0 V supply (2.7–3.6 V). It supports independent channel operation with on-chip track-and-hold and reference.

For engineers reviewing the AD9288BSTZRL-40 datasheet, AD9288BSTZRL-40 pinout, AD9288BSTZRL-40 application, or AD9288BSTZRL-40 equivalent, key selection criteria include dual-channel sampling rate consistency, SNR performance at RF IF frequencies, low-power standby mode for battery operation, and compatibility with 3.3 V/2.5 V digital interfaces.

Technical Context

The AD9288BSTZRL-40 implements a pipelined ADC architecture with bit-per-stage conversion and internal error correction. Each channel features fully differential analog inputs, independent encode clock inputs (ENCA/ENCB), and user-selectable data alignment via S1/S2 pins.

It integrates an on-chip 1.25 V reference (REFOUT) with ±130 ppm/°C tempco, supports external reference inputs (REFINA/REFINB), and offers twos complement or offset binary output formatting. Digital outputs are TTL/CMOS-compatible and driven from a separate VDD supply (2.5–3.6 V).

Key Specifications

Pinout & Package

AD9288BSTZRL-40 is housed in a 48-lead LQFP package (7 mm × 7 mm, 1.4 mm height), surface-mount, industrial temperature grade (–40°C to +85°C).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual-channel ADC applications.

Compared with AD9288BSTZ-40, the RL variant adds tape-and-reel packaging for SMT line integration and full MSD handling, while AD9203ARUZ trades dual-channel integration and embedded reference for higher resolution at the cost of increased BOM count and layout complexity.

Availability

AD9288BSTZRL-40 is available at Aetrix Electronics and suitable for battery-powered instrumentation, portable oscilloscopes, and wireless I/Q receiver front-ends requiring stable component supply across industrial temperature ranges.

Supply support for AD9288BSTZRL-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 DSP technologies, serving precision instrumentation, communications, and industrial markets since 1965.

The AD9288 belongs to Analog Devices' high-speed ADC product line, designed specifically for cost-sensitive, low-power dual-channel digitization in portable and communications test equipment.

FAQ

What is the maximum analog input frequency supported by the AD9288BSTZRL-40?

The AD9288BSTZRL-40 specifies 475 MHz analog bandwidth, meaning it maintains –3 dB response up to that frequency. For reliable Nyquist-compliant sampling, input signals should be band-limited to ≤20 MHz at 40 MSPS. Higher-frequency inputs (e.g., 70–100 MHz IF) can be captured directly but require careful anti-alias filtering to avoid folding.

Does the AD9288BSTZRL-40 require an external reference voltage?

No-the AD9288BSTZRL-40 includes an internal 1.25 V reference (REFOUT) that can directly drive REFINA and REFINB pins. External references are optional and used only when tighter accuracy (<±0.1%) or custom full-scale range is needed. Default operation uses the internal reference.

How does the standby mode function in the AD9288BSTZRL-40?

Standby mode is controlled via S1/S2 pins. With S1=0/S2=0, both channels enter standby: encode inputs go high-impedance, analog front-ends power down, and digital outputs enter high-Z state. Total dissipation drops to 6–11 mW. Channel B alone can be disabled using S1=0/S2=1.

Can the AD9288BSTZRL-40 operate with a 2.5 V digital supply?

Yes-digital outputs (D7A–D0A, D7B–D0B) are powered from VDD, which supports 2.5–3.6 V. The AD9288BSTZRL-40 maintains full-spec timing and logic levels at 2.5 V VDD, enabling direct interfacing with 2.5 V FPGAs or ASICs without level shifters.

Is the AD9288BSTZRL-40 pin-compatible with other members of the AD9288 family?

Yes-AD9288BSTZRL-40 shares identical pinout and footprint with AD9288BSTZ-40, AD9288BSTZ-80, and AD9288BSTZ-100. All variants use the same 48-lead LQFP package and support identical interface protocols, allowing drop-in rate upgrades without hardware changes.