Analog Devices Inc. LT6001CDD#TRPBF

Overview

LT6001CDD#TRPBF from Analog Devices (formerly Linear Technology) is a dual precision rail-to-rail input/output operational amplifier in a 10-lead 3mm × 3mm DFN package with integrated shutdown control. It operates from 1.8V to 16V, draws only 13µA per amplifier at 1.8V, guarantees ≤600µV input offset voltage over 0°C–70°C, and supports rail-to-rail operation on single-supply battery-powered gas sensing front-ends.

For engineers reviewing the LT6001CDD#TRPBF datasheet, LT6001CDD#TRPBF pinout, LT6001CDD#TRPBF application, or LT6001CDD#TRPBF equivalent, key selection criteria include micropower shutdown current (≤1.5µA), guaranteed 1.8V operation, input offset drift (≤5µV/°C), and DFN thermal performance (θ_JA = 160°C/W) for space-constrained portable instrumentation.

Technical Context

The LT6001CDD#TRPBF uses complementary PNP/NPN input stages to achieve rail-to-rail common-mode input range (0V to V_S) and maintains precision via independent trimming of both stages. Its folded-cascode second stage and complementary drive output stage enable 30mV rail-to-rail swing under no load while minimizing start-up and saturation current surges.

Shutdown is controlled by the SHDN pin: asserting ≤0.3V relative to V– places both amplifiers in high-impedance state with total supply current ≤1.5µA and output leakage ≤20nA. Turn-on/off times are 400µs and 100µs respectively into 10kΩ load, supporting low-duty-cycle sensor biasing.

Key Specifications

Pinout & Package

LT6001CDD#TRPBF is housed in a 10-lead 3mm × 3mm plastic DFN package (DD) with exposed pad connected to V–. Thermal resistance θ_JA = 160°C/W with minimal PCB copper; junction limit is 125°C.

Key Features

Applications

Equivalent & Alternatives

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

Compared with LTC2050CMS8#TRPBF and OPA333AIDBVR, LT6001CDD#TRPBF uniquely balances 600µV offset, 13µA quiescent current, integrated shutdown, and DFN thermal efficiency-making it optimal for space- and power-constrained 12–14-bit sensor nodes where zero-drift isn't required.

Availability

LT6001CDD#TRPBF is available at Aetrix Electronics and suitable for gas sensing, portable medical instrumentation, and battery-powered data loggers requiring stable component supply with long-term lifecycle support.

Supply support for LT6001CDD#TRPBF 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 its precision analog portfolio, emphasizing low-power, high-accuracy signal conditioning for industrial and medical markets.

The LT6000/LT6001/LT6002 family was designed specifically for micropower, rail-to-rail sensor interfaces in battery- and energy-harvesting–powered equipment where supply voltage can dip to 1.8V.

FAQ

What is the maximum supply voltage rating for LT6001CDD#TRPBF?

The absolute maximum total supply voltage (V+ to V–) for LT6001CDD#TRPBF is 18V. Continuous operation above 16V is not recommended. This rating applies across the full −40°C to 85°C temperature range and is validated per Linear Technology's reliability testing protocol. Exceeding 18V risks permanent damage to the internal ESD structures and input stage transistors.

Does LT6001CDD#TRPBF support true rail-to-rail input at 1.8V supply?

Yes, LT6001CDD#TRPBF supports rail-to-rail input common-mode range (0V to V_S) at 1.8V supply, as confirmed in the Electrical Characteristics table (page 3) and Figure 1 schematic. The dual PNP/NPN input stage ensures continuous operation across the full range, with CMRR ≥82dB maintained even at V_CM = V_S, enabling accurate amplification of signals near the supply rails in low-voltage systems.

How does the shutdown function behave during brown-out conditions?

During brown-out (V_S dropping below 1.8V), LT6001CDD#TRPBF remains functional down to 1.8V but shutdown behavior degrades: the SHDN pin threshold (V_L = 0.3V) becomes less defined, and total shutdown current may rise to ~5µA below 1.5V. For robust brown-out handling, tie SHDN to a dedicated supervisor IC rather than relying on V_S-derived logic.

Can LT6001CDD#TRPBF drive capacitive loads up to 100pF without instability?

Yes, LT6001CDD#TRPBF is stable driving ≥100pF capacitive loads, as shown in Figure 60012 G23 (Overshoot vs Capacitive Load). At unity gain, overshoot remains <15% with 100pF, and phase margin stays >60° per Figure 60012 G21. For loads >200pF, add a 10Ω series resistor at the output to maintain stability.

What is the thermal performance difference between LT6001CDD#TRPBF and LT6001CMS8#TRPBF?

LT6001CDD#TRPBF (DFN-10) has θ_JA = 160°C/W with minimal PCB copper, while LT6001CMS8#TRPBF (MSOP-8) has θ_JA = 250°C/W. Under identical 1.8V/26µA conditions, the DFN package runs ~14°C cooler on a 2-layer board. This enables higher channel density in compact sensor modules without derating.