Analog Devices Inc. AD9625BBPZ-2.0

Overview

AD9625BBPZ-2.0 from Analog Devices is a 12-bit, 2.0 GSPS analog-to-digital converter optimized for direct RF sampling in spectrum analyzers and radar receivers. It delivers 59.0 dBFS SNR at 1 GHz input, −149.0 dBFS/Hz noise spectral density, and 80 dBc SFDR with 3.2 GHz analog input bandwidth. Its JESD204B 6- or 8-lane serial output supports deterministic latency and multichip synchronization via SYSREF±.

For engineers reviewing the AD9625BBPZ-2.0 datasheet, AD9625BBPZ-2.0 pinout, AD9625BBPZ-2.0 application, or AD9625BBPZ-2.0 equivalent, key selection considerations include its 2.0 GSPS sample rate grade, dual decimation filters with 10-bit NCOs, differential clock and analog inputs, 1.3 V/2.5 V dual-supply operation, and JESD204B Subclass 1 compliance for time-critical systems.

Technical Context

The AD9625BBPZ-2.0 implements a high-speed pipeline ADC architecture with on-chip 1.2 V reference and integrated digital downconverters (DDCs). It supports two independent decimate-by-8 or decimate-by-16 filters, each with a 10-bit numerically controlled oscillator (NCO) for frequency translation and channelization.

Differential analog input (1.2 V p-p), clock (CLK±), and SYSREF± interfaces ensure robust timing integrity. The JESD204B serial interface operates at up to 6.5 Gbps per lane in 6- or 8-lane configurations, enabling deterministic latency and multichip synchronization required in phased-array radar and electronic warfare systems.

Key Specifications

Pinout & Package

The AD9625BBPZ-2.0 is housed in a 144-lead LFCSP (12 mm × 12 mm × 1.2 mm) package with exposed thermal pad. Pin assignments follow the standard AD9625 pinout as documented in Rev. C datasheet Figure 5 and Table 8.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-speed ADC applications.

Compared with AD9625BBPZ-2.5, the AD9625BBPZ-2.0 trades 0.5 GSPS bandwidth for 320 mW lower power and marginally better SNR at 1 GHz; versus ADS54J60IRGCT, it delivers double the sample rate at the cost of 2-bit resolution, making it superior for wideband intercept but less optimal for narrowband high-fidelity measurement.

Availability

AD9625BBPZ-2.0 is available at Aetrix Electronics and suitable for spectrum analyzers, radar receivers, and military communications systems requiring stable component supply, long-term obsolescence management, and traceable sourcing from authorized channels.

Supply support for AD9625BBPZ-2.0 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 AD9625 product line delivers ultra-high-speed ADCs for direct RF sampling in defense, aerospace, and test equipment-designed to replace IF-staging architectures with single-chip wideband digitization.

FAQ

What is the maximum analog input frequency supported by the AD9625BBPZ-2.0?

The AD9625BBPZ-2.0 supports an analog full-power bandwidth of 3.2 GHz, enabling direct sampling of RF signals up to the second Nyquist zone. At its 2.0 GSPS sample rate, it can accurately digitize input tones up to 1.0 GHz without aliasing, and higher-frequency signals (e.g., 1.8 GHz) with appropriate anti-alias filtering and consideration of SNR degradation. This specification is measured with internal termination and confirmed in the Rev. C datasheet, Table 1.

Does the AD9625BBPZ-2.0 require an external reference voltage?

No, the AD9625BBPZ-2.0 integrates a precision 1.2 V internal reference and does not require an external reference. The VCM pin outputs a buffered 525 mV common-mode voltage for external driver biasing, but the ADC core reference is self-contained. External reference use is neither specified nor supported per the Rev. C datasheet, Section "General Description" and Table 1.

What JESD204B subclass does the AD9625BBPZ-2.0 support?

The AD9625BBPZ-2.0 supports JESD204B Subclass 1, which provides deterministic latency and multi-device synchronization using the SYSREF± signal. This is explicitly stated in the "Features" section and verified in the "Digital Outputs" subsection of the Rev. C datasheet. Subclass 1 operation is mandatory for applications requiring phase-aligned sampling across multiple AD9625BBPZ-2.0 devices, such as AESA radar systems.

Can the AD9625BBPZ-2.0 operate with only six JESD204B lanes?

Yes, the AD9625BBPZ-2.0 supports configurable 6-lane or 8-lane JESD204B output. At 2.0 GSPS with 12-bit resolution, a 6-lane configuration yields 6.5 Gbps per lane (Subclass 1), meeting the JESD204B specification. This is documented in the "Features" list and confirmed in the "Digital Outputs" section of the Rev. C datasheet, Table 3 and Figure 4 timing diagram.

What is the power dissipation of the AD9625BBPZ-2.0 in eight-lane mode?

In eight-lane JESD204B mode at 2.0 GSPS, the AD9625BBPZ-2.0 dissipates 3.48 W typical, with a maximum of 3.90 W, as specified in Table 1 ("DC Specifications") of the Rev. C datasheet. This value includes all supply domains (AVDD1, AVDD2, DRVDD1, DRVDD2, DVDD1, DVDD2, DVDDIO, SPI_VDDIO) under full operation with dc-coupled output data and default SPI settings.