Analog Devices Inc. LTC6242HVIDHC#PBF

Overview

LTC6242HVIDHC#PBF from Analog Devices (formerly Linear Technology) is a quad, rail-to-rail output, low-noise CMOS operational amplifier optimized for high-precision, low-input-bias-current signal conditioning. It delivers 18MHz gain bandwidth, 550nV_P-P 0.1Hz–10Hz noise, ≤1pA max input bias current, and operates from 2.8V to 6V single supply or ±5.5V dual supply - ideal for photodiode amplification and medical sensor front-ends.

For engineers reviewing the LTC6242HVIDHC#PBF datasheet, LTC6242HVIDHC#PBF pinout, LTC6242HVIDHC#PBF application, or LTC6242HVIDHC#PBF equivalent, key selection criteria include guaranteed H-grade (–40°C to 85°C) operation, 16-pin DFN (5mm × 3mm) package with exposed V– pad, channel-to-channel matching specs, and low-frequency noise performance critical for DC-coupled transducer interfaces.

Technical Context

The LTC6242HVIDHC#PBF integrates four independent unity-gain-stable op amps in a single monolithic die, each featuring CMOS input stage with <1pA input bias current and 3.5pF differential input capacitance. Its rail-to-rail output swings within 30mV of either supply rail at 5mA load, while input common-mode range extends to the negative rail - enabling true single-supply operation down to 2.8V.

Designed for precision analog signal chains, it guarantees 125μV max input offset voltage (over –40°C to 85°C), 2.5μV/°C max offset drift, and 10nV/√Hz input voltage noise density at 1kHz. The device maintains ≥13MHz gain bandwidth across its full operating temperature and supply range, with 10V/μs slew rate ensuring fidelity in fast-settling applications like charge amplification.

Key Specifications

Pinout & Package

Package: 16-lead plastic DFN (5mm × 3mm), exposed metal pad connected to V– (PCB connection optional). Thermal resistance θ_JA = 43°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with OP4177ARUZ and TLV9064IDR, the LTC6242HVIDHC#PBF uniquely balances ultra-low input bias current, 18MHz bandwidth, and guaranteed 550nV_P-P low-frequency noise - making it optimal for high-impedance, wideband precision signal chains where both speed and DC accuracy are non-negotiable.

Availability

LTC6242HVIDHC#PBF is available at Aetrix Electronics and suitable for photodiode amplification, medical instrumentation, and high-impedance transducer interfacing requiring stable component supply across industrial and healthcare production programs.

Supply support for LTC6242HVIDHC#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, serving industrial, automotive, communications, and healthcare markets.

The LTC6242 belongs to ADI's precision op amp product line, engineered specifically for low-noise, low-input-bias-current applications including sensor signal conditioning, medical diagnostics, and scientific instrumentation.

FAQ

What is the maximum guaranteed input bias current for LTC6242HVIDHC#PBF over its operating temperature range?

The LTC6242HVIDHC#PBF guarantees ≤1pA maximum input bias current across its full specified operating temperature range of –40°C to 85°C. This specification applies to all four amplifiers and is validated per the datasheet's Electrical Characteristics table for H-grade devices under VS = 5V, 0V conditions. The typical value is 0.2pA at 25°C, but design margins must use the 1pA max limit.

Does LTC6242HVIDHC#PBF support true rail-to-rail input common-mode range?

No, the LTC6242HVIDHC#PBF does not support rail-to-rail input common-mode range. Its input common-mode voltage range extends to the negative supply rail (V–) but only up to 3.5V below the positive rail (V+) when operating on 5V single supply - i.e., 0V to 3.5V. On ±5V supplies, the valid range is –5V to +3.5V. This limitation is explicitly defined in the Absolute Maximum Ratings and Electrical Characteristics sections of the datasheet.

Can LTC6242HVIDHC#PBF drive a 10kΩ load while maintaining rail-to-rail output swing?

Yes, the LTC6242HVIDHC#PBF maintains rail-to-rail output swing into a 10kΩ load. At ISOURCE = 1mA and ISINK = 1mA, the output voltage swing is guaranteed to be within 30mV of both rails (VOL ≤30mV, VOH ≥V+–30mV) across –40°C to 85°C. With 10kΩ load, output current is <0.5mA at 5V swing - well within the 1mA test condition, preserving full dynamic range without clipping.

What is the thermal performance of the DFN package used by LTC6242HVIDHC#PBF?

The LTC6242HVIDHC#PBF uses a 16-lead DFN package (5mm × 3mm) with an exposed metal pad connected to V–. Its junction-to-ambient thermal resistance (θ_JA) is 43°C/W when mounted on a standard 2-layer PCB with 1in² copper pour under the pad. This allows continuous operation at up to 125°C junction temperature - critical for high-density industrial PCBs where ambient temperatures exceed 85°C.

How does the channel-to-channel input offset voltage match compare between LTC6242HVIDHC#PBF and the SO-16 SSOP variant?

The LTC6242HVIDHC#PBF (DFN) specifies ≤700μV max channel-to-channel input offset voltage match over –40°C to 85°C, while the SSOP-packaged LTC6242HVIDHC#PBF equivalent (LTC6242HIGN#PBF) guarantees ≤400μV under identical conditions. This difference arises from package-induced thermal gradients and die mounting variations - the DFN's tighter thermal coupling can increase mismatch. For applications requiring tight matching, the SSOP variant is preferred despite larger footprint.