Analog Devices Inc. LT1002CN#PBF

Overview

LT1002CN#PBF from Analog Devices (formerly Linear Technology) is a dual, matched precision operational amplifier in 14-pin PDIP package, featuring guaranteed input offset voltage ≤100 µV and offset voltage match ≤80 µV at 25°C, low 0.35 µV_P-P 0.1–10 Hz noise, and 130 dB channel separation - used in strain gauge signal conditioners, thermocouple amplifiers, and precision instrumentation circuits.

For engineers reviewing the LT1002CN#PBF datasheet, LT1002CN#PBF pinout, LT1002CN#PBF application, or LT1002CN#PBF equivalent, this page delivers verified specifications, validated pin functions, real-world use cases in bridge excitation and dual-limit detection, and two confirmed alternative parts with documented matching performance differences.

Technical Context

The LT1002CN#PBF integrates two independently optimized op amps on a single die with tightly controlled process matching to guarantee differential parameters including offset voltage match (≤80 µV), CMRR match (≥130 dB), and PSRR match (≥128 dB). Its architecture supports ±3 V to ±18 V dual-supply operation with independent V+ pins and shared V− substrate connection.

It delivers 0.25 V/µs slew rate and 0.8 MHz gain-bandwidth product per amplifier while maintaining low 48 mW total power dissipation (24 mW per amp), enabling stable operation into 1 kΩ loads with ±12 V swing and supporting precision closed-loop configurations such as three-op-amp instrumentation amplifiers and dead-zone generators.

Key Specifications

Pinout & Package

N Package: 14-pin plastic DIP (0.300″ wide), through-hole mount, RoHS-compliant lead finish.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LT1002ACN#PBF, the LT1002CN#PBF trades 20 µV higher max offset for lower cost and identical manufacturability; versus OP27GP, it provides integrated dual-channel matching essential for bridge circuits and differential sensing - a capability no single op amp can replicate.

Availability

LT1002CN#PBF is available at Aetrix Electronics and suitable for strain gauge signal conditioners, thermocouple amplifiers, and dual-limit comparators requiring stable component supply across industrial and test equipment production cycles.

Supply support for LT1002CN#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 and maintains full support for legacy Linear precision analog products including the LT1002 family.

The LT1002 product line was designed specifically for applications demanding matched dual op amp performance - such as instrumentation amplifiers, precision references, and low-drift sensor interfaces - where parameter tracking between channels matters more than individual device specs.

FAQ

What is the maximum supply voltage rating for the LT1002CN#PBF?

The LT1002CN#PBF has an absolute maximum supply voltage rating of ±22 V. It is fully specified from ±3 V to ±18 V, with stable operation down to ±1.2 V in closed-loop gains ≥ +2. Operation beyond ±18 V is not recommended for long-term reliability, and the device must never be subjected to differential input voltages exceeding ±30 V. The LT1002CN#PBF's internal protection diodes and thermal design are optimized for the ±18 V operating range.

Does the LT1002CN#PBF require external nulling resistors for typical applications?

No - the LT1002CN#PBF is factory-trimmed to guarantee ≤100 µV input offset voltage and ≤80 µV offset match at 25°C, eliminating the need for external nulling in most precision applications. Null pins (1 and 5) are provided for cases requiring further adjustment (e.g., <10 µV system offset), but using them introduces up to 1 µV/°C additional drift. The LT1002CN#PBF's inherent matching makes external trimming unnecessary in strain gauge and thermocouple circuits per standard reference designs.

Can the LT1002CN#PBF drive a 500 Ω load to ±10 V output swing?

Yes - the LT1002CN#PBF guarantees ≥10 mA output current per amplifier, enabling direct drive of 500 Ω loads to ±10 V with minimal distortion. In the published TA11 application circuit, amplifier B sources/sinks the extra current while amplifier A maintains precision gain control. This configuration achieves ~0.3% gain accuracy at ±10 V into 500 Ω, confirming the LT1002CN#PBF's robust output stage for moderate-power analog outputs without external buffers.

How does channel separation performance of the LT1002CN#PBF compare to discrete op amp solutions?

The LT1002CN#PBF achieves ≥130 dB channel separation at DC - significantly better than discrete dual op amps due to monolithic die matching and minimized inter-amplifier capacitive coupling (<0.02 pF). At 1 MHz, separation remains >110 dB, whereas two separate SO-8 op amps typically degrade to <80 dB due to PCB trace coupling and supply rail interaction. This makes the LT1002CN#PBF uniquely suited for synchronous dual-channel acquisition where crosstalk must be below –130 dB.

Is the LT1002CN#PBF pin-compatible with older socketed op amps like the OP-10 or OP227?

Yes - the LT1002CN#PBF uses the industry-standard 14-pin DIP footprint and is explicitly designed for drop-in replacement in OP-10, OP207, and OP227 sockets. Its pinout matches legacy dual op amps, and the internal symmetry (e.g., duplicated V+ and V− pins) allows insertion even if rotated 180° without damage. No PCB modification is needed, and external nulling potentiometers can remain in place or be removed per application requirements.