Analog Devices Inc. LTC6087CDD#PBF

Overview

LTC6087CDD#PBF from Analog Devices (formerly Linear Technology) is a dual, rail-to-rail input/output, low-noise CMOS operational amplifier optimized for high-impedance sensor signal conditioning. It delivers 14MHz gain bandwidth, 7.2V/µs slew rate, 12nV/√Hz input voltage noise at 1kHz, 750µV max offset voltage, and 1pA typical input bias current at 25°C - enabling precision amplification in portable medical devices, shock/vibration sensors, and data acquisition systems operating from 2.7V to 5.5V.

For engineers reviewing the LTC6087CDD#PBF datasheet, LTC6087CDD#PBF pinout, LTC6087CDD#PBF application, or LTC6087CDD#PBF equivalent, key selection criteria include its shutdown-enabled dual-channel architecture in 10-lead DFN, guaranteed –40°C to 85°C operation, rail-to-rail swing within 30mV of rails, and validated performance with high-Z transducers such as Murata PKGS-00MX1 shock sensors.

Technical Context

The LTC6087CDD#PBF employs complementary PMOS/NMOS input stages to achieve true rail-to-rail common-mode input range (V– to V+), with seamless transition between input pairs near 0.9V–1.3V below V+. Its class AB output stage supports ±45mA short-circuit current while maintaining 30mV rail headroom under no-load conditions.

Shutdown control is implemented via two dedicated active-low pins (SHDNA, SHDNB), each drawing ≤5µA in shutdown mode and featuring internal pull-up to V+, enabling independent channel power gating for multiplexed analog front-ends - a capability absent in MSOP-packaged variants.

Key Specifications

Pinout & Package

The LTC6087CDD#PBF is housed in a 10-lead (3mm × 3mm) plastic DFN package with exposed thermal pad connected to V–. The package requires soldering of the exposed pad to PCB ground plane for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC6078CDD#PBF and LTC6241CDD#PBF, the LTC6087CDD#PBF uniquely balances 14MHz bandwidth, 1pA bias current, and rail-to-rail operation - making it optimal for dual-channel, medium-speed, high-impedance sensor interfaces where both precision and responsiveness are required.

Availability

LTC6087CDD#PBF is available at Aetrix Electronics and suitable for portable test equipment, medical instrumentation, and shock/vibration sensor systems requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6087CDD#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 for precision instrumentation, industrial, and communications markets.

The LTC6087 product line was designed specifically for dual-channel, rail-to-rail, low-bias-current amplification in high-impedance sensor signal chains - targeting applications where traditional op amps introduce unacceptable DC error or noise.

FAQ

What is the maximum operating temperature range for the LTC6087CDD#PBF?

The LTC6087CDD#PBF is specified for continuous operation from –40°C to +85°C. This C-grade temperature rating is confirmed in the Absolute Maximum Ratings and Order Information tables of the official datasheet, and applies across all electrical parameters unless otherwise noted. The device is not rated for 125°C operation - that specification belongs to the H-grade variant (LTC6087HDD#PBF).

Does the LTC6087CDD#PBF support rail-to-rail input and output simultaneously?

Yes, the LTC6087CDD#PBF supports true rail-to-rail input (common-mode range extends from V– to V+) and rail-to-rail output (swings within 30mV of both rails under no-load conditions). This dual rail-to-rail capability is explicitly verified in the Electrical Characteristics table and Typical Performance Characteristics curves, enabling full utilization of supply voltage in single-supply systems.

How does the shutdown functionality work on the LTC6087CDD#PBF?

The LTC6087CDD#PBF features two independent active-low shutdown pins: SHDNA (Pin 5) and SHDNB (Pin 6). When pulled ≤0.8V (C-grade) or ≤1.2V (H-grade), each pin disables its respective amplifier and reduces supply current to ≤5µA. Internal pull-up current sources hold both pins at V+ when floating, ensuring normal operation without external biasing - a feature unique to the DFN package variant.

What is the input bias current specification for the LTC6087CDD#PBF at 85°C?

At 85°C, the LTC6087CDD#PBF exhibits a typical input bias current of 15pA, as documented in the "Features" section and confirmed in the Typical Performance Characteristics plot "LTC6087 Input Bias Current vs Temperature". This value remains well below 100pA, preserving usability in high-impedance applications even at elevated temperatures.

Is the exposed pad on the LTC6087CDD#PBF electrically connected, and how should it be handled?

Yes, the exposed pad on the LTC6087CDD#PBF is internally connected to V– and must be soldered to a PCB copper pour tied to the negative supply or ground plane. This connection is mandatory for thermal dissipation (θJA = 43°C/W) and electrical stability - failure to do so may cause increased junction temperature, parameter shift, or oscillation. The requirement is explicitly stated in the DD Package mechanical drawing and Applications Information section.