Analog Devices Inc. AD9241ASZRL

Overview

AD9241ASZRL from Analog Devices is a monolithic 14-bit, 1.25 MSPS analog-to-digital converter (ADC) with integrated sample-and-hold amplifier and programmable voltage reference. It operates on a single +5 V supply, delivers 78.0 dB SNR+D at 100 kHz input, exhibits ±0.6 LSB differential nonlinearity, and features straight-binary output with out-of-range (OTR) flag-used in medical imaging front-ends and IF-sampling communications receivers.

For engineers reviewing the AD9241ASZRL datasheet, AD9241ASZRL pinout, AD9241ASZRL application, or AD9241ASZRL equivalent, this page provides verified DC/AC specifications, 44-pin MQFP package mapping, functional pin roles, real-world use scenarios in data acquisition and direct-IF systems, and two validated alternative ADCs for similar high-speed, medium-resolution sampling applications.

Technical Context

The AD9241ASZRL employs a four-stage differential pipelined architecture with digital error correction logic to guarantee no missing codes across –40°C to +85°C. Its SHA supports both single-ended and differential inputs, configurable for 2 V or 5 V p-p spans using internal 1 V or 2.5 V references-or external references via VREF/REFCOM pins.

It uses a single rising-edge-triggered clock (min 800 ns period), introduces 3-clock-cycle pipeline latency, and outputs data synchronized to CLK with 8–19 ns delay. Digital drivers support +3 V or +5 V CMOS logic levels via DRVDD, while AVDD/DVDD/DRVDD are independently supplied at +5 V ±5%.

Key Specifications

Pinout & Package

AD9241ASZRL is housed in a 44-pin Metric Quad Flatpack (MQFP), RoHS-compliant, with 0.8 mm lead pitch and exposed thermal pad. Thermal resistance θ_JA = 53.2°C/W enables stable operation in compact industrial PCB layouts without forced airflow.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD9241ASZRL, AD9221ARZ trades 2 bits of resolution for lower power and marginally better noise floor, while ADS8325IPFBT abandons pipeline latency and speed for 16-bit precision and zero missing codes-but cannot replace AD9241ASZRL in time-critical sampling applications.

Availability

AD9241ASZRL is available at Aetrix Electronics and suitable for medical ultrasound systems, wireless IF receivers, industrial PLC analog input modules, and benchtop test equipment requiring stable component supply and long-lifecycle support.

Supply support for AD9241ASZRL 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, founded in 1965 and headquartered in Wilmington, MA.

The AD9241ASZRL belongs to Analog Devices' high-speed precision ADC product line, designed specifically for applications demanding 14-bit resolution at multi-MSPS rates with integrated analog front-end functionality and industrial temperature range operation.

FAQ

What is the maximum sampling rate supported by the AD9241ASZRL?

The AD9241ASZRL supports a maximum sustained sampling rate of 1.25 MSPS, as confirmed in its DC and AC specifications tables. This rate is achievable across the full operating temperature range (–40°C to +85°C) with AVDD = DVDD = DRVDD = +5 V ±5%, and is limited by the minimum clock period of 800 ns. Exceeding this rate degrades SNR, SFDR, and may cause missing codes.

Does the AD9241ASZRL require an external voltage reference?

No, the AD9241ASZRL does not require an external voltage reference-it integrates a programmable internal reference delivering either 1 V or 2.5 V, selected via the SENSE pin. However, an external reference can be connected to the VREF pin for improved dc accuracy and lower temperature drift, especially in metrology or calibration-critical applications.

What is the function of the OTR pin on the AD9241ASZRL?

The OTR (Out-of-Range) pin on the AD9241ASZRL is an active-high digital flag indicating analog input overflow-i.e., when |VINA – VINB| exceeds ±VREF. It is asserted synchronously with the data output and used alongside BIT 1 (MSB) to distinguish between high-overflow (MSB = 1, OTR = 1) and low-overflow (MSB = 0, OTR = 1) conditions in real-time signal monitoring.

Can the AD9241ASZRL interface directly with a 3.3 V FPGA?

Yes, the AD9241ASZRL can interface directly with a 3.3 V FPGA by setting DRVDD = +3.3 V. In this configuration, its digital outputs meet VOH ≥ +2.4 V (IOH = 50 µA) and VOL ≤ +0.7 V (IOL = 50 µA), satisfying standard 3.3 V CMOS input thresholds. No level-shifting circuitry is required when DRVDD matches the FPGA's I/O voltage.

What package type is used for the AD9241ASZRL?

The AD9241ASZRL uses a 44-pin Metric Quad Flatpack (MQFP) package, designated as S-44 in Analog Devices' ordering guide. It features gull-wing leads, 0.8 mm pitch, and an exposed thermal pad for enhanced heat dissipation-compatible with standard surface-mount reflow processes and suitable for high-density industrial PCB layouts.