Analog Devices Inc. LT1632IN8#PBF

Overview

LT1632IN8#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input and output precision operational amplifier in an 8-pin PDIP package. It delivers 45MHz gain-bandwidth, 45V/µs slew rate, ±15V or single 2.7–36V supply operation, 1350µV max input offset voltage, and 35mA min output drive-enabling high-fidelity signal conditioning in battery-powered instrumentation and A/D driver circuits.

For engineers reviewing the LT1632IN8#PBF datasheet, LT1632IN8#PBF pinout, LT1632IN8#PBF application, or LT1632IN8#PBF equivalent, key selection criteria include rail-to-rail I/O swing at low supply voltages, guaranteed 45MHz GBW across temperature, input offset voltage drift ≤17µV/°C, and thermal performance in industrial-grade PDIP packaging.

Technical Context

The LT1632IN8#PBF employs a dual-input-stage architecture: PNP differential pair active for V_CM near V⁻, NPN pair active near V⁺, enabling true rail-to-rail common-mode range without phase reversal. Its complementary bipolar process ensures matched AC/DC characteristics between amplifiers.

Output stage uses complementary common-emitter transistors with local feedback capacitors (C1/C2), delivering rail-to-rail swing while maintaining stability into 200pF loads at ±15V and supporting 0.01% settling in 400ns. Input bias current polarity reverses with common-mode voltage, requiring impedance matching to minimize offset error.

Key Specifications

Pinout & Package

LT1632IN8#PBF is housed in an 8-pin plastic DIP (PDIP) package with standard dual op amp pinout per JEDEC MS-001. Thermal resistance θ_JA = 150°C/W enables operation up to 85°C ambient under typical load conditions.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OPA2333AIDR and AD8629ARZ, the LT1632IN8#PBF uniquely balances high-speed precision (45MHz/45V/µs) with rail-to-rail operation and industrial temperature rating - making it irreplaceable in mixed-signal systems demanding both bandwidth and DC accuracy.

Availability

LT1632IN8#PBF is available at Aetrix Electronics and suitable for active filters, rail-to-rail buffer amplifiers, driving A/D converters, and battery-powered systems requiring stable component supply across extended temperature ranges.

Supply support for LT1632IN8#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.

The LT1632IN8#PBF belongs to Linear's precision high-speed op amp product line, engineered for applications demanding rail-to-rail operation, wide supply flexibility, and robust performance across –40°C to +85°C industrial environments.

FAQ

What is the maximum supply voltage for LT1632IN8#PBF?

The LT1632IN8#PBF supports a total supply voltage (V+ to V−) up to 36V, including single-supply configurations from 2.7V to 36V or dual supplies such as ±15V. Absolute maximum ratings specify 36V across the supply pins; exceeding this risks permanent damage. Operation at ±15V is fully characterized and supported across the full –40°C to +85°C temperature range.

Does LT1632IN8#PBF support true rail-to-rail input and output?

Yes, the LT1632IN8#PBF provides true rail-to-rail input common-mode range (V_CM = V⁻ to V⁺) and rail-to-rail output swing (within 15mV of either rail under no load). This is achieved via dual-input-stage architecture (PNP/NPN) and complementary common-emitter output stage, enabling full dynamic range utilization in low-voltage systems like 3.3V or 5V data acquisition.

What is the guaranteed input offset voltage specification for LT1632IN8#PBF?

The LT1632IN8#PBF has a maximum input offset voltage of 1350µV over the full –40°C to +85°C operating temperature range, as specified in the "ELECTRICAL CHARACTERISTICS" table for the I-grade part. Typical V_OS is less than 400µV at 25°C, and offset voltage drift is guaranteed ≤17µV/°C - critical for maintaining accuracy in uncalibrated industrial sensors.

Can LT1632IN8#PBF drive capacitive loads, and what is the limit?

Yes, the LT1632IN8#PBF can drive capacitive loads up to 200pF in unity-gain configuration when operated on ±15V supplies. On 3V supplies, the recommended limit is <100pF. For larger loads, a 20Ω–50Ω isolation resistor must be placed in series with the output, with feedback taken after the resistor to maintain stability and prevent peaking or oscillation.

Is LT1632IN8#PBF pin-compatible with other dual op amps?

The LT1632IN8#PBF uses the industry-standard 8-pin dual op amp pinout (SO-8 and PDIP), matching pin-for-pin with legacy devices like LM358 and OP27 - but functional compatibility requires verification of supply range, bandwidth, and rail-to-rail capability. It is not a drop-in replacement for non-rail-to-rail or low-speed op amps without circuit review.