Analog Devices Inc. LT1058ACN#PBF

Overview

LT1058ACN#PBF from Analog Devices (acquired Linear Technology) is a quad JFET-input precision operational amplifier in 14-lead PDIP package, delivering 14 V/µs slew rate, 5 MHz gain-bandwidth product, and 180 µV typical input offset voltage. It operates from ±15 V supplies with ±12 V output swing into 2 kΩ, serving high-speed precision signal conditioning in instrumentation, photodiode amplification, and analog computing circuits.

For engineers reviewing the LT1058ACN#PBF datasheet, LT1058ACN#PBF pinout, LT1058ACN#PBF application, or LT1058ACN#PBF equivalent, key selection criteria include its picoampere-level input bias current (±5 pA at 25°C), low 13 nV/√Hz input voltage noise at 1 kHz, and guaranteed 0°C to 70°C operating range - critical for stable performance in precision analog front-ends and sample-and-hold systems.

Technical Context

The LT1058ACN#PBF implements a matched quad JFET-input architecture with fully differential high-impedance inputs (10¹² Ω differential resistance), enabling ultra-low input current errors in high-source-impedance applications. Its internal compensation ensures unity-gain stability while supporting fast settling (1.3 µs to 0.02%) without external components.

It features phase reversal protection - unlike legacy JFET op amps (e.g., LF412A or TL084) - preventing output lock-up when common-mode voltage exceeds –12 V with ±15 V supplies. This makes it suitable for robust operation in industrial sensor interfaces where input transients occur.

Key Specifications

Pinout & Package

N14 package: 14-lead plastic dual in-line package (PDIP), 0.300-inch width, through-hole mounting, JEDEC MS-001 compliant. RoHS-compliant #PBF suffix indicates lead-free finish.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar quad JFET-input op amp applications.

Compared with LT1058ACN#PBF, LT1014CN#PBF trades speed and input impedance for superior DC precision, while TL084CDR offers lower cost and surface-mount compatibility at the expense of guaranteed low-noise performance and robustness against input overvoltage.

Availability

LT1058ACN#PBF is available at Aetrix Electronics and suitable for instrumentation front-ends, photodiode signal chains, and analog computing modules requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for LT1058ACN#PBF 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 acquired Linear Technology in 2017, inheriting its precision analog portfolio including high-performance op amps, references, and regulators.

The LT1058ACN#PBF belongs to Linear Technology's precision JFET-input op amp family, designed specifically for applications demanding both high speed and microvolt-level DC accuracy - bridging the gap between bipolar and CMOS technologies.

FAQ

What is the maximum operating temperature range for the LT1058ACN#PBF?

The LT1058ACN#PBF is rated for 0°C to 70°C ambient operating temperature. This is confirmed in the "PACKAGE/ORDER INFORMATION" section of the datasheet, where "LT1058AC" grade explicitly defines this range. Operation outside this range may result in parametric degradation or failure, and the device is not characterized for extended temperature performance.

Does the LT1058ACN#PBF have phase reversal protection?

Yes, the LT1058ACN#PBF includes built-in phase reversal protection. As documented in the Applications Information section, it avoids output inversion when the negative common-mode input voltage exceeds –12 V under ±15 V supplies - a known failure mode in legacy JFET op amps like the LF412A or TL084. This feature enhances reliability in sensor interface circuits prone to input transients.

What is the typical input bias current of the LT1058ACN#PBF at 25°C?

The typical input bias current of the LT1058ACN#PBF is ±5 pA at 25°C, as specified in the "ELECTRICAL CHARACTERISTICS" table under "lB Input Bias Current". This value applies to the AC grade and is measured after full warm-up. At 70°C, the typical bias current rises to ±60 pA, reflecting JFET thermal behavior.

Can the LT1058ACN#PBF drive capacitive loads directly?

The LT1058ACN#PBF can drive moderate capacitive loads, but stability depends on configuration. The datasheet shows stable operation with 100 pF in unity-gain follower tests (Figure G15), but recommends external compensation (e.g., series resistor + feedback capacitor) for loads >100 pF or in high-gain configurations. Uncompensated driving of >1 nF loads risks peaking or oscillation due to pole splitting.

Is the LT1058ACN#PBF pin-compatible with standard quad op amp sockets?

Yes, the LT1058ACN#PBF uses the industry-standard 14-pin DIP footprint and is socket-compatible with LF347, LF444, TL074, and TL084 devices, as explicitly stated in the datasheet's "APPLICATIONS INFORMATION" section. Pin assignments match JEDEC MS-001, enabling drop-in replacement in existing designs without PCB modification.