Analog Devices Inc. AD9444BSVZ-80

Overview

AD9444BSVZ-80 from Analog Devices is a 14-bit, 80 MSPS monolithic analog-to-digital converter with on-chip track-and-hold, LVDS/CMOS selectable outputs, 2.0 V_p-p differential input, and dual-supply operation (3.3 V/5.0 V). It delivers 73.1 dB SNR at 70 MHz input and 97 dBc SFDR, optimized for cellular infrastructure receivers requiring high dynamic range in multicarrier environments.

For engineers reviewing the AD9444BSVZ-80 datasheet, AD9444BSVZ-80 pinout, AD9444BSVZ-80 application, or AD9444BSVZ-80 equivalent, key selection criteria include guaranteed 80 MSPS sampling rate, LVDS ANSI-644 compatibility, 100-lead TQFP/EP package with exposed heat sink, industrial temperature range (−40°C to +85°C), and integrated reference with DCS clock stabilization.

Technical Context

The AD9444BSVZ-80 implements a pipeline ADC architecture with 14-bit resolution and 12-cycle latency. Its analog front end features 650 MHz analog bandwidth, 2.5 pF input capacitance, and 1 kΩ differential input resistance, supporting wideband RF sampling up to 151 MHz while maintaining >71 dB SNR.

Dual-mode digital interface supports LVDS (247–545 mV differential swing) or CMOS outputs, with configurable data format (twos complement/offset binary) and output mode selection. Clock duty cycle stabilizer (DCS) ensures performance across variable input clock duty cycles, and OR+/- pins provide out-of-range detection.

Key Specifications

Pinout & Package

AD9444BSVZ-80 is housed in a 100-lead TQFP/EP (exposed paddle) package with lead pitch of 0.5 mm, body size 14 mm × 14 mm, and thermal resistance θ_JA = 19.8°C/W (heat sink soldered to AGND).

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9445BCPZ-80 and ADS5463IPFP, AD9444BSVZ-80 uniquely balances 14-bit resolution, 80 MSPS rate, integrated analog front end, and industrial temperature operation-making it optimal for cost-sensitive, thermally stable multicarrier receiver designs.

Availability

AD9444BSVZ-80 is available at Aetrix Electronics and suitable for cellular infrastructure receivers, antenna array beamformers, power amplifier linearization systems, and radar signal acquisition platforms requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for AD9444BSVZ-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, with design centers worldwide and ISO 9001-certified manufacturing.

The AD9444 belongs to Analog Devices' high-speed data converter product line, engineered specifically for demanding communications infrastructure applications where dynamic range, low distortion, and system integration are critical.

FAQ

What is the maximum analog input frequency supported by the AD9444BSVZ-80 while maintaining specified SNR?

The AD9444BSVZ-80 maintains ≥72.0 dB SNR up to 100 MHz input frequency and retains usable performance (71.1 dB SNR) at 151 MHz. Its 650 MHz analog bandwidth ensures minimal amplitude roll-off, but SNR degrades above 100 MHz due to thermal and quantization noise dominance. For designs targeting >72 dB SNR, keep analog input below 100 MHz.

Does the AD9444BSVZ-80 require external clock conditioning circuitry?

No-AD9444BSVZ-80 integrates a clock duty cycle stabilizer (DCS) that compensates for input clock duty cycle variations between 40% and 60%, eliminating the need for external duty cycle correction circuits. The device accepts differential LVPECL-level clocks directly on CLK+/CLK− pins with 0.2 V minimum swing.

How is the reference configured on the AD9444BSVZ-80, and can it use an external reference?

The AD9444BSVZ-80 supports both internal and external reference modes. Set SENSE = AGND to enable the factory-trimmed 1.0 V internal reference (VREF pin becomes output). Set SENSE = AVDD2 to use an external reference applied to VREF. In either mode, VREF must be decoupled with 0.1 µF and 10 µF capacitors to AGND.

What thermal management is required for continuous operation of the AD9444BSVZ-80 at 80 MSPS?

The AD9444BSVZ-80 dissipates 1.21 W in LVDS mode. Its 100-lead TQFP/EP package requires the exposed paddle to be soldered to a solid AGND plane with ≥4 thermal vias (0.3 mm diameter) connecting to inner ground layers. With this, θ_JA drops to 19.8°C/W, limiting junction temperature to <105°C at +85°C ambient-within safe operating limits.

Can the AD9444BSVZ-80 operate with only a 3.3 V supply, or is the 5.0 V AVDD2 rail mandatory?

The 5.0 V AVDD2 rail is mandatory for AD9444BSVZ-80 operation. It powers the analog input buffer and track-and-hold circuitry, which require headroom to handle the 2.0 V_p-p differential input swing centered at 3.5 V common-mode. Omitting AVDD2 or reducing it below 4.75 V causes gain error, increased DNL, and potential input clipping.