Analog Devices Inc. OP249GSZ-REEL

Overview

OP249GSZ-REEL from Analog Devices is a precision dual JFET operational amplifier optimized for high-speed, low-distortion signal conditioning. It delivers 22 V/µs typical slew rate, ≤1.2 µs settling time to 0.01%, and 200 µV typical input offset voltage, enabling accurate amplification in fast DAC output stages and ADC input buffers.

For engineers reviewing the OP249GSZ-REEL datasheet, OP249GSZ-REEL pinout, OP249GSZ-REEL application, or OP249GSZ-REEL equivalent, key selection criteria include symmetrical slew performance under 600 Ω load, 0.002% THD at 10 kHz, ultralow input bias current (30 pA), and guaranteed open-loop gain ≥1000 V/mV across temperature.

Technical Context

The OP249GSZ-REEL integrates two matched JFET-input amplifier cores sharing a common die, delivering symmetrical positive/negative slew behavior critical for distortion-sensitive applications. Its design emphasizes linearity in large-signal transient response, with no thermal tailing or long-term ringing observed in settling waveforms.

It operates from ±4.5 V to ±18 V supplies, supports rail-to-rail input voltage range of ±12.5 V, and maintains stable unity-gain operation without external compensation-enabling direct use in fast-settling feedback configurations such as active filters and servo integrators.

Key Specifications

Pinout & Package

OP249GSZ-REEL is supplied in an 8-lead SOIC (R-8) package per JEDEC MS-012, with gull-wing leads, 1.27 mm pitch, and RoHS-compliant matte tin finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar dual JFET op amp applications.

Compared with AD823ARZ and TL072CDR, OP249GSZ-REEL uniquely balances JFET-input precision (30 pA IB, 200 µV V_OS) with high-speed capability (22 V/µs, ≤1.2 µs settling), making it the only option among the three qualified for 12-bit DAC output amplification with guaranteed monotonicity and THD <0.005%.

Availability

OP249GSZ-REEL is available at Aetrix Electronics and suitable for high-precision data acquisition, professional audio equipment, and industrial instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for OP249GSZ-REEL 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.

The OP249GSZ-REEL belongs to Analog Devices' precision JFET op amp product line, engineered specifically for applications demanding simultaneous high speed, low distortion, and dc accuracy-such as DAC/ADC interface, instrumentation, and audio signal chains.

FAQ

What is the maximum operating temperature range for OP249GSZ-REEL?

The OP249GSZ-REEL is rated for −40°C to +85°C operation, matching the OP249G grade specified in the Rev. I datasheet. This range is validated across all electrical parameters including offset voltage drift, slew rate, and settling time. The device's SOIC package (R-8) has a junction temperature limit of +150°C, supporting reliable operation in industrial environments. OP249GSZ-REEL does not support the extended −55°C to +125°C range of the OP249A grade.

Does OP249GSZ-REEL require external compensation for unity-gain stability?

No, OP249GSZ-REEL is internally compensated for unity-gain stability and operates stably with AV = 1 without external components. Its phase margin remains ≥55° across temperature and load conditions, including 600 Ω resistive and 200 pF capacitive loads. This eliminates the need for lead compensation in standard DAC output amplifier circuits-though optional 33 pF capacitors may be added in DAC interface designs to dampen DAC-output-capacitance-induced peaking, as documented in Figure 49 of the OP249 datasheet.

What is the input voltage range specification for OP249GSZ-REEL?

The OP249GSZ-REEL supports an input voltage range of ±12.5 V when operated with ±15 V supplies, as confirmed in Table 1 of the Rev. I datasheet. This range is guaranteed by common-mode rejection testing and allows direct interfacing with ±10 V industrial sensors and DACs. Operation outside this range risks phase inversion, though the device remains undamaged. The absolute maximum input voltage is ±18 V, equal to the supply rails.

How does the slew rate symmetry of OP249GSZ-REEL benefit servo control applications?

OP249GSZ-REEL exhibits identical 22 V/µs positive and negative slew rates, eliminating net DC offset accumulation during repeated direction reversals in closed-loop servo systems. Unlike asymmetric-slewing amplifiers that inject harmonic-rich error currents into integrator stages, OP249GSZ-REEL's linear, symmetric transient response prevents long-term drift and improves position-hold accuracy. This is explicitly validated in Figure 41 of the datasheet, where OP249 outperforms LT1057 in large-signal fidelity.

Can OP249GSZ-REEL drive a 600 Ω load while maintaining 0.01% settling performance?

Yes, OP249GSZ-REEL is characterized to settle to 0.01% in ≤1.2 µs while driving a 600 Ω load, as shown in Figure 5 and confirmed in Table 1 (settling time t_S parameter). Its rugged output stage delivers ±36 mA short-circuit current and maintains low distortion (<0.005%) into 600 Ω at 10 kHz. This capability is central to its qualification for professional audio line drivers and fast DAC output stages where legacy dual JFET op amps fail to meet both speed and load-drive requirements simultaneously.