Analog Devices Inc. AD9248BST-65EBZ

Overview

AD9248BST-65EBZ from Analog Devices is a dual-channel, 14-bit, 65 MSPS analog-to-digital converter evaluation board built around the AD9248BST-65 IC. It supports differential analog inputs up to 500 MHz bandwidth, delivers 71.6 dB SNR and 80.5 dBc SFDR at Nyquist, and operates from a single 3 V supply. The board enables IF sampling in wideband receivers and ultrasound front-ends.

For engineers reviewing the AD9248BST-65EBZ datasheet, AD9248BST-65EBZ pinout, AD9248BST-65EBZ application, or AD9248BST-65EBZ equivalent, this page provides verified functional context, validated board-level specifications, confirmed analog input interface requirements, clocking architecture details, and direct alternatives for dual-channel 14-bit ADC evaluation platforms.

Technical Context

The AD9248BST-65EBZ implements a dual-pipeline ADC architecture with integrated sample-and-hold amplifiers, on-chip voltage reference, and clock duty cycle stabilizer (DCS). It supports independent or shared reference modes via SHARED_REF pin and multiplexed data output via MUX_SELECT.

Each channel features dedicated power-down (PWDN_A/B), output enable (OEB_A/B), and out-of-range (OTR_A/B) signals. Digital outputs are LVCMOS-compatible with DRVDD = 2.5 V, and analog inputs accept 1 V_p-p to 2 V_p-p differential ranges with 7 pF input capacitance.

Key Specifications

Availability

AD9248BST-65EBZ is available at Aetrix Electronics and suitable for ultrasound equipment development, IF sampling receiver prototyping, and WB-CDMA/WiMAX baseband verification requiring stable component supply and full evaluation board traceability.

Supply support for AD9248BST-65EBZ 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 AD9248BST-65EBZ belongs to Analog Devices' high-speed data converter evaluation platform family, designed specifically to accelerate validation of dual-channel, 14-bit, 20/40/65 MSPS ADCs in demanding RF and medical imaging applications.

FAQ

What is the AD9248BST-65EBZ used for?

The AD9248BST-65EBZ is an evaluation board for the AD9248BST-65 dual 14-bit, 65 MSPS analog-to-digital converter. It enables hardware validation of differential analog input performance, clock jitter tolerance, crosstalk immunity (>85 dB), and multiplexed data output functionality. Engineers use the AD9248BST-65EBZ to verify system-level timing, reference stability, and dynamic performance before integrating the AD9248BST-65 into production designs such as ultrasound front-ends or IF-sampling receivers.

Does the AD9248BST-65EBZ include the AD9248BST-65 IC?

Yes, the AD9248BST-65EBZ includes one mounted AD9248BST-65 IC in a 64-lead LQFP package. The board is pre-populated with the target device, all required decoupling capacitors (0.1 μF + 10 μF per supply), reference circuitry, clock conditioning components, and SMA-connected analog input paths - enabling immediate functional testing without additional component assembly.

What power supplies are required for the AD9248BST-65EBZ?

The AD9248BST-65EBZ requires two regulated DC supplies: AVDD = 3.0 V (±5%) for analog circuitry and DRVDD = 2.5 V (±5%) for digital outputs. Both rails must be independently decoupled per the AD9248BST-65 datasheet - using 0.1 μF ceramic capacitors in parallel with 10 μF bulk capacitors near each supply pin. AGND and DRGND are separate but connected at a single point on the board.

Can the AD9248BST-65EBZ operate in shared-reference mode?

Yes, the AD9248BST-65EBZ supports both independent and shared reference configurations. The SHARED_REF pin (Pin 62) controls this mode: logic high selects shared reference (reducing gain mismatch between channels), while logic low enables independent references. The board provides jumpers and test points to configure SHARED_REF, and the AD9248BST-65 datasheet confirms <±0.01% gain error in shared mode at 25°C - a key advantage for channel-matched applications like phased-array ultrasound.

Is there a LFCSP version of the AD9248BST-65EBZ?

No - the AD9248BST-65EBZ is specifically configured for the AD9248BST-65 in 64-lead LQFP packaging. Analog Devices offers a separate evaluation platform, the AD9248-65EBZ (no "ST" suffix), for the LFCSP variant (AD9248BCP-65). The "ST" in AD9248BST-65EBZ explicitly denotes the LQFP package; mechanical layout, thermal pad routing, and pin access differ significantly between the two boards, and they are not interchangeable.