Analog Devices Inc. AD9629-65EBZ

Overview

AD9629-65EBZ from Analog Devices is a 12-bit, 65 MSPS analog-to-digital converter (ADC) operating from a single 1.8 V analog supply with differential 700 MHz input bandwidth, 2 V_p-p full-scale input range, and on-chip voltage reference. It delivers 71.3 dBFS SNR at 9.7 MHz and 69.0 dBFS at 200 MHz input, supporting communications receivers, ultrasound imaging, and radar signal acquisition.

For engineers reviewing the AD9629-65EBZ datasheet, AD9629-65EBZ pinout, AD9629-65EBZ application, or AD9629-65EBZ equivalent, key selection considerations include its 32-lead LFCSP package, SPI-configurable data format (offset binary/gray/twos complement), programmable clock divider (1/2/4), and dual-supply digital output driver (1.8 V to 3.3 V).

Technical Context

The AD9629-65EBZ implements a multistage differential pipeline architecture with error correction logic to guarantee 12-bit accuracy and no missing codes across −40°C to +85°C. Its sample-and-hold circuit supports input frequencies up to 200 MHz while maintaining low power consumption (65 mW at 65 MSPS).

It features a standard serial port interface (SPI) for configuring data alignment, DCO timing, voltage reference modes, and built-in test pattern generation-including deterministic, pseudorandom, and user-defined patterns. The differential clock input accepts CMOS/LVDS/LVPECL signals with internal common-mode bias at 0.9 V.

Key Specifications

Pinout & Package

The AD9629-65EBZ is housed in a 32-lead, 5 mm × 5 mm RoHS-compliant LFCSP package with exposed paddle (EPAD) that must be soldered to AGND for thermal, electrical, and mechanical integrity.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar analog-to-digital conversion applications.

Compared with AD9629-65EBZ, the AD9609-65EBZ trades 2 bits of resolution for lower cost and power, while the AD9649-65EBZ adds 2 bits at the expense of higher power and degraded high-frequency SFDR-making AD9629-65EBZ the optimal balance for mid-range communications and medical imaging.

Availability

AD9629-65EBZ is available at Aetrix Electronics and suitable for communications infrastructure, portable medical imaging, radar signal processing, and handheld test equipment requiring stable component supply and long-term design continuity.

Supply support for AD9629-65EBZ 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, with decades of expertise in precision data conversion and RF technologies.

The AD9629 product line delivers high-speed, low-power ADCs optimized for communications, medical imaging, and instrumentation-designed to replace discrete ADC+reference+driver solutions with monolithic, pin-compatible alternatives across 10-/12-/14-bit resolutions.

FAQ

What is the maximum analog input frequency supported by the AD9629-65EBZ?

The AD9629-65EBZ supports analog input frequencies up to 200 MHz while maintaining specified AC performance, including 69.0 dBFS SNR and 83 dBc SFDR. Its 700 MHz analog input bandwidth ensures minimal amplitude roll-off and phase distortion within this range, making it suitable for direct IF sampling in wireless infrastructure and radar applications. This specification is validated per the AD9629 Rev. B datasheet Table 2.

Does the AD9629-65EBZ require an external voltage reference?

No, the AD9629-65EBZ includes an on-chip 1.0 V voltage reference with ±12 mV tolerance over temperature and load, eliminating the need for external reference components in most applications. External reference mode is supported via the VREF and SENSE pins if tighter accuracy or custom reference voltage is required. The internal reference is enabled by default and specified in AD9629 Rev. B datasheet Table 1.

Can the AD9629-65EBZ operate with a 3.3 V digital interface?

Yes, the AD9629-65EBZ supports 1.8 V to 3.3 V digital output levels via the DRVDD supply pin. When DRVDD = 3.3 V, the D0–D11 outputs and DCO meet CMOS specifications with VOH ≥ 3.25 V (at 0.5 mA) and VOL ≤ 0.2 V (at 1.6 mA). This allows direct interfacing with 3.3 V FPGA or ASIC I/O banks without level shifters, as confirmed in AD9629 Rev. B datasheet Table 3.

How does the SPI interface configure the AD9629-65EBZ data output format?

The AD9629-65EBZ SPI interface configures data output format (offset binary, gray code, or twos complement) through Register 0x0C[1:0] per the AD9629 Rev. B datasheet Memory Map. In non-SPI mode, the SCLK/DFS pin sets format statically: DFS high = twos complement, DFS low = offset binary. Gray code requires SPI programming and is not selectable via pin strapping.

Is the AD9629-65EBZ pin-compatible with other members of the AD96xx family?

Yes, the AD9629-65EBZ uses the same 32-lead LFCSP package and pinout as the AD9609 (10-bit) and AD9649 (14-bit) families, enabling drop-in replacement across resolution grades at 20/40/65/80 MSPS rates. This pin compatibility is explicitly stated in the AD9629 Rev. B Product Highlights section and verified in Figure 3 and Table 8 of the datasheet.