Analog Devices Inc. AD9260ASRL

Overview

AD9260ASRL from Analog Devices is a monolithic 16-bit oversampled CMOS analog-to-digital converter (ADC) with 8× sigma-delta architecture, 2.5 MHz output word rate at 20 MSPS modulator clock, 88.5 dB SNR, –96 dB THD, and 100 dB SFDR. It delivers high dynamic range for precision instrumentation and communications receiver front-ends requiring low-noise digitization of baseband signals up to 1.01 MHz.

For engineers reviewing the AD9260ASRL datasheet, AD9260ASRL pinout, AD9260ASRL application, or AD9260ASRL equivalent, this page provides verified technical context, decimation-mode-dependent specifications, validated 44-lead MQFP package mapping, and two confirmed alternative ADCs for oversampled 16-bit signal acquisition in industrial and telecom systems.

Technical Context

The AD9260ASRL integrates a multibit sigma-delta modulator with three cascaded half-band FIR decimation stages, supporting selectable 1×, 2×, 4×, or 8× oversampling ratios. Its digital demodulator outputs 16-bit twos-complement data at rates from 2.5 MHz (8× mode) down to 20 MHz (1× mode), with linear-phase filtering and 0.004 dB passband ripple.

It features an on-chip programmable reference (1 V or 2.5 V), differential analog input (±1 V span, 60 dB CMRR), and dual-supply operation: +5 V AVDD for analog circuitry and +3 V or +5 V DVDD/DRVDD for digital I/O. Power scales from 150 mW to 585 mW depending on decimation mode and clock rate.

Key Specifications

Pinout & Package

AD9260ASRL is housed in a 44-lead MQFP (Metric Quad Flat Package) with 0.8 mm lead pitch, specified for industrial temperature range (–40°C to +85°C). Thermal resistance θ_JA = 53.2°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9260ASRL, AD9261BCPZ-25 offers higher raw sample rate but lacks on-chip filtering and delivers 10.5 dB less SNR; ADS127L01IPBS provides superior noise performance at 1/10 the output rate and requires no external reference or decimation hardware, making it better suited for precision DC measurements.

Availability

AD9260ASRL is available at Aetrix Electronics and suitable for communications infrastructure, precision instrumentation, and industrial process monitoring requiring stable component supply across extended product lifecycles.

Supply support for AD9260ASRL 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Wilmington, MA.

The AD9260ASRL belongs to Analog Devices' high-speed precision ADC product line, designed specifically for applications demanding both wide bandwidth and exceptional dynamic range through oversampling and integrated digital filtering.

FAQ

What is the maximum analog input frequency supported by AD9260ASRL in 8× oversampling mode?

The AD9260ASRL supports a 1.01 MHz signal passband with 0.004 dB ripple in 8× mode, enabling accurate digitization of baseband signals up to that frequency. Full-power bandwidth is 75 MHz, but usable dynamic performance degrades above 1.01 MHz due to decimation filter roll-off. For optimal SNR and SFDR, keep input tones below 1.01 MHz in this mode. The AD9260ASRL's FIR filter defines the effective bandwidth, not the modulator's Nyquist limit.

Does AD9260ASRL require an external reference, or does it include an internal one?

The AD9260ASRL includes a fully integrated, programmable internal voltage reference configurable for either 1.0 V or 2.5 V output, with ±14 mV or ±35 mV accuracy respectively. External reference operation is also supported via the VREF pin for applications requiring tighter dc accuracy or lower drift. The AD9260ASRL's reference buffer and SENSE/REFCOM/CAPT/CAPB pins allow flexible configuration without external components in most use cases.

Can AD9260ASRL operate with a 3 V digital supply while using 5 V for analog circuitry?

Yes - the AD9260ASRL supports independent digital supply rails: DVDD and DRVDD accept +3 V or +5 V, while AVDD requires +5 V. This allows direct interfacing with 3 V FPGAs or DSPs without level-shifting, while maintaining full analog performance. The AD9260ASRL's digital I/O specifications (e.g., VOL ≤ 0.4 V at IOL = 0.3 mA with DRVDD = 5 V) are guaranteed across both voltage options.

How does power consumption scale with decimation ratio in AD9260ASRL?

AD9260ASRL power scales from 150 mW (minimum, in low-clock 1× mode) to 585 mW (maximum, in full-rate 8× mode). At 20 MSPS clock, typical consumption is 585 mW for 8×, 600 mW for 4×, 608 mW for 2×, and 613 mW for 1× - reflecting increased digital filter activity at lower decimation. The AD9260ASRL's power scaling circuit dynamically adjusts bias currents to maintain linearity while reducing dissipation in reduced-throughput configurations.

Is AD9260ASRL pin-compatible with other members of the AD926x family?

No - AD9260ASRL is not pin-compatible with AD9261 or AD9262. While sharing functional similarities, the AD9260ASRL uses a 44-lead MQFP package with unique pin assignments (e.g., separate DRVDD/DRVSS, dedicated MODE and OTR pins) distinct from the LFCSP packages and different pinouts of later-generation devices. PCB layout must be designed specifically for AD9260ASRL; migration requires board redesign. The AD9260ASRL's pin configuration is fixed per Rev. C datasheet Figure 10.