Analog Devices Inc. LT1466LCN8#PBF

Overview

LT1466LCN8#PBF from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail input and output operational amplifier in an 8-lead PDIP package. It delivers 75 µA max supply current per amplifier, 390 µV max input offset voltage across full rail-to-rail common-mode range, and 120 kHz gain bandwidth product - enabling high-accuracy signal conditioning in low-power 3V/5V/±5V systems such as sensor front-ends and portable data acquisition.

For engineers reviewing the LT1466LCN8#PBF datasheet, LT1466LCN8#PBF pinout, LT1466LCN8#PBF application, or LT1466LCN8#PBF equivalent, key selection criteria include guaranteed V_OS over full V_CM, 83 dB min CMRR, rail-to-rail swing with <60 mV low-side saturation at 0.5 mA, and bipolar process stability for precision DC-coupled designs.

Technical Context

The LT1466LCN8#PBF uses a patented dual-input-stage architecture: a PNP pair active near V– and an NPN pair active near V+, both independently trimmed for offset. This enables consistent 390 µV max V_OS across V_CM = V– to V+, unlike competitive rail-to-rail op amps specified only at mid-supply.

Its complementary bipolar output stage (Q12/Q13) achieves true rail-to-rail swing with 270 mV max VOL at 2.5 mA sink and V+ – 0.265 V VOH at 2.5 mA source. Open-loop gain ≥400 V/mV into 10 kΩ ensures minimal gain error in closed-loop configurations.

Key Specifications

Pinout & Package

LT1466LCN8#PBF is housed in an 8-lead plastic DIP (N8) package with standard dual op amp pinout and 0.300-inch body width.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar precision rail-to-rail op amp applications.

Compared with LT1366CS8#PBF and LTC1152CN8#PBF, the LT1466LCN8#PBF uniquely balances micropower operation (75 µA), guaranteed full-range V_OS, and bipolar stability - making it optimal for cost-sensitive, battery-operated precision analog front-ends where zero-drift noise or high bandwidth are unnecessary.

Availability

LT1466LCN8#PBF is available at Aetrix Electronics and suitable for supply current sensing, A/D converter driving, test equipment amplifiers, and low-power sensor signal conditioning requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for LT1466LCN8#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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LT1466LCN8#PBF belongs to Linear's precision micropower op amp family, designed specifically for DC-accurate, low-quiescent-current signal conditioning in space- and power-constrained systems.

FAQ

What is the maximum supply voltage rating for LT1466LCN8#PBF?

The absolute maximum supply voltage for LT1466LCN8#PBF is ±8 V. Operation beyond this risks permanent damage. The device is fully specified for supply ranges of 2 V to 5 V (single) or ±2.5 V to ±5 V (dual), with guaranteed performance including 390 µV V_OS max and 83 dB CMRR within those ranges. Always observe derating guidelines for extended temperature operation.

Does LT1466LCN8#PBF support true rail-to-rail input at V– and V+?

Yes, LT1466LCN8#PBF supports true rail-to-rail input: its dual-input-stage architecture (PNP + NPN) allows valid operation with common-mode voltage from V– to V+, and input offset voltage is guaranteed ≤390 µV across that entire range - not just at mid-supply. This is confirmed in the Electrical Characteristics table under V_OS conditions "VCM = V+" and "VCM = V–".

What is the typical input bias current of LT1466LCN8#PBF at room temperature?

The typical input bias current of LT1466LCN8#PBF is 6 nA at V_CM = V+, and –6 nA at V_CM = V–, per the Electrical Characteristics table. This low bias current minimizes voltage errors in high-impedance sensor interfaces, such as photodiode transimpedance amplifiers or pH electrode buffers, without requiring guard traces or active cancellation.

Can LT1466LCN8#PBF drive a 10 kΩ load while maintaining rail-to-rail output swing?

Yes, LT1466LCN8#PBF maintains rail-to-rail output swing into 10 kΩ loads: VOH ≥ V+ – 0.026 V and VOL ≤ 60 mV (no load), and even at ISOURCE = 0.5 mA, VOH remains ≥ V+ – 0.135 V. Its 400 V/mV minimum open-loop gain ensures minimal gain compression under these conditions, preserving linearity in precision buffer and gain-stage applications.

Is LT1466LCN8#PBF pin-compatible with other dual op amp packages like SO-8?

No, LT1466LCN8#PBF is in an 8-lead PDIP (N8) package and is not pin-compatible with SO-8 variants such as LT1466LCS8#PBF. While both share identical electrical functionality and pin function mapping (e.g., Pin 1 = OUT A), the physical dimensions, lead pitch, and mounting requirements differ. PCB layout must be specific to the N8 footprint; direct substitution requires mechanical redesign.