Analog Devices Inc. AD7762BSVZ

Overview

AD7762BSVZ from Analog Devices is a 24-bit, 625 kSPS sigma-delta analog-to-digital converter with on-chip differential amplifier buffer, 109 dB dynamic range at full speed, 106 dB SNR at 625 kHz output data rate, and fully differential modulator input. It targets high-speed precision data acquisition in vibration analysis and instrumentation systems where wide bandwidth and low antialiasing complexity are critical.

For engineers reviewing the AD7762BSVZ datasheet, AD7762BSVZ pinout, AD7762BSVZ application, or AD7762BSVZ equivalent, this page delivers verified specifications, validated pin functions, confirmed industrial-temperature operation (−40°C to +85°C), exact TQFP-64 package mapping, and two rigorously cross-referenced alternative parts for system-level design tradeoffs.

Technical Context

The AD7762BSVZ employs a multistage digital FIR filter architecture-comprising three cascaded filters-with programmable decimation (32× to 256×) and user-configurable coefficients in the final stage. Its analog front end integrates a differential amplifier for signal buffering and level shifting, plus internal gain/offset correction registers.

It operates with a 40 MSPS analog modulator sampling rate, supports synchronous multi-device operation via SYNC, and delivers fully filtered output word rates up to 625 kHz. The device uses separate analog and digital supply domains (AVDD1/2/3/4, DVDD, VDRIVE) with dedicated ground planes and on-chip decoupling pins (DECAPA, DECAPB).

Key Specifications

Pinout & Package

The AD7762BSVZ is housed in a 64-lead TQFP package with exposed thermal pad, specified for −40°C to +85°C operation. Pin functions are validated per Analog Devices Rev. A datasheet (Page 7–8), including dual AGND/DGND separation, dedicated decoupling pins (DECAPA, DECAPB), and bias-setting RBIAS.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD7762BSVZ, AD7763BRUZ trades parallel throughput and analog integration for compact serial interface, while AD7760ARUZ prioritizes speed over dynamic range and on-chip signal conditioning-making AD7762BSVZ uniquely balanced for high-fidelity, medium-speed industrial DAQ.

Availability

AD7762BSVZ is available at Aetrix Electronics and suitable for vibration analysis systems, precision instrumentation platforms, and industrial data acquisition modules requiring stable component supply, long-term lifecycle support, and guaranteed −40°C to +85°C performance.

Supply support for AD7762BSVZ 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 R&D and manufacturing infrastructure spanning North America, Europe, and Asia.

The AD7762BSVZ belongs to Analog Devices' precision sigma-delta ADC product line, engineered specifically for high-speed, high-dynamic-range data acquisition in industrial, instrumentation, and structural health monitoring applications.

FAQ

What is the maximum output data rate of the AD7762BSVZ, and under what conditions is it achieved?

The AD7762BSVZ achieves a maximum fully filtered output data rate of 625 kSPS when configured with 32× decimation and a 40 MHz master clock (MCLK). This rate delivers 106 dB SNR and 109 dB dynamic range. Performance is validated per Analog Devices Rev. A datasheet Table 2, using VREF = 4.096 V and normal mode operation at TA = 25°C.

Does the AD7762BSVZ include an on-chip buffer, and how is it used in signal chain design?

Yes, the AD7762BSVZ integrates a fully differential on-chip amplifier (VINA+/VINA− to VOUTA+/VOUTA−) powered by AVDD3. It provides signal buffering, level shifting, and common-mode biasing-enabling direct connection to IEPE accelerometers or transformer-coupled sources without external op-amps. This reduces component count and improves noise immunity in the AD7762BSVZ signal path.

What package type and thermal characteristics does the AD7762BSVZ use?

The AD7762BSVZ is supplied in a 64-lead TQFP package with exposed thermal pad, rated for −40°C to +85°C operation. Its thermal impedance is θJA = 92.7°C/W and θJC = 5.1°C/W. The exposed pad must be connected to AGNDx using six to eight vias per Analog Devices datasheet Figure 4 and Table 5-critical for maintaining junction temperature below 150°C at 958 mW dissipation.

How does the AD7762BSVZ support synchronization across multiple devices in a system?

The AD7762BSVZ uses the SYNC pin to enable deterministic multi-device synchronization: a falling edge resets the internal digital filter state, aligning conversion timing across all connected AD7762BSVZ units sharing the same MCLK. This ensures phase-coherent sampling for applications like beamforming or multi-axis vibration analysis-confirmed in the Functional Block Diagram and General Description sections of the datasheet.

What are the key power supply requirements for the AD7762BSVZ, and why are they segmented?

The AD7762BSVZ requires five independent supplies: AVDD1 (2.5 V, modulator), AVDD2/3/4 (5 V / 3.3–5 V / 3.3–5 V, analog subsystems), DVDD (2.5 V, digital core), and VDRIVE (1.65–2.7 V, I/O logic). Segmentation isolates noise-sensitive analog paths (e.g., AVDD1/AGND1) from digital switching noise-validated by separate ground pins (AGND1–4, DGND) and decoupling mandates (e.g., 100 nF on AVDD1, 33 pF on DECAPB) in datasheet Table 5.