Analog Devices Inc. LTC6258IS6#TRMPBF

Overview

LTC6258IS6#TRMPBF from Analog Devices is a single-channel, rail-to-rail input/output operational amplifier optimized for micropower precision signal conditioning in battery-powered systems. It delivers 1.3MHz gain-bandwidth, 20µA supply current, 400µV max offset voltage, and stable operation into 100nF capacitive loads - enabling high-accuracy active filtering and reference buffering in portable instrumentation and automotive sensor interfaces.

For engineers reviewing the LTC6258IS6#TRMPBF datasheet, LTC6258IS6#TRMPBF pinout, LTC6258IS6#TRMPBF application, or LTC6258IS6#TRMPBF equivalent, key selection criteria include its 1.8V–5.25V supply range, 7µA shutdown current, C-Load™ capacitive drive capability, EMI rejection at 45dB (1GHz), and TSOT-23-6 package compatibility with space-constrained PCB layouts.

Technical Context

The LTC6258IS6#TRMPBF employs a dual-input-stage architecture-PNP-based for low common-mode voltages and NPN-based near V+-enabling true rail-to-rail input operation from V– –0.1V to V+ +0.1V. Its patented bias current cancellation circuit maintains ≤75nA input bias current across 0.2V–(V+–0.2V) common-mode range.

Internal compensation ensures unity-gain stability with ≥1.3MHz GBW and 0.24V/µs slew rate while consuming only 20µA per amplifier. The SHDN pin provides active-low control with 0.6V logic threshold, reducing quiescent current to 7µA and placing the output in high-impedance state.

Key Specifications

Pinout & Package

Package: 6-Lead Plastic TSOT-23 (S6), 2.9mm × 1.6mm × 0.9mm, exposed pad not connected (non-functional).

Key Features

Applications

Equivalent & Alternatives

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

Compared with MAX44260ASA+ and OPA316IDBVR, the LTC6258IS6#TRMPBF uniquely combines sub-25µA quiescent current, guaranteed 100nF capacitive drive, and documented 45dB EMI rejection-making it optimal for space- and power-constrained automotive and portable designs where reliability under RF stress is mandatory.

Availability

LTC6258IS6#TRMPBF is available at Aetrix Electronics and suitable for micropower active filters, portable instrumentation, and battery-powered sensor nodes requiring stable component supply across extended temperature ranges (–40°C to 85°C).

Supply support for LTC6258IS6#TRMPBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.

The LTC6258 family belongs to Analog Devices' precision micropower op amp product line, engineered specifically for ultra-low-power, high-accuracy signal conditioning in energy-harvesting and battery-operated systems.

FAQ

What is the maximum capacitive load the LTC6258IS6#TRMPBF can drive stably in unity-gain configuration?

The LTC6258IS6#TRMPBF is characterized for stable unity-gain operation into 100nF capacitive loads without external compensation, as verified in the Capacitive Load Handling plot (Figure 6258 G27). This C-Load™ capability eliminates the need for isolation resistors when driving ADC input capacitors, long PCB traces, or piezoelectric transducers-reducing component count and board area in compact designs.

Does the LTC6258IS6#TRMPBF support true ground-sensing input operation?

Yes, the LTC6258IS6#TRMPBF supports true ground-sensing: its input common-mode range extends to V– –0.1V, allowing operation with V– = 0V and valid input signals down to –100mV. Combined with rail-to-rail output swing, this enables accurate zero-crossing detection and single-supply sensor interfacing without level-shifting circuitry-critical for thermistor and bridge sensor applications.

What is the shutdown behavior of the LTC6258IS6#TRMPBF output stage?

When the SHDN pin is pulled low (≤0.6V), the LTC6258IS6#TRMPBF output enters a high-impedance state with leakage ≤100nA, and supply current drops to ≤7µA. The output does not clamp or short; it floats electrically. This allows safe multiplexing of multiple LTC6258IS6#TRMPBF outputs onto a shared bus or ADC input without contention or loading errors.

How does the EMI rejection ratio of 45dB at 1GHz benefit automotive applications?

The 45dB EMI rejection ratio at 1GHz means the LTC6258IS6#TRMPBF attenuates injected RF interference by >100× in voltage terms-preventing demodulation artifacts in audio paths, false triggers in sensor outputs, and data corruption in CAN/LIN interface buffers. This specification is measured per Analog Devices' standard test method (injecting –10dBm at pins), making it directly applicable to real-world automotive RF environments without additional filtering.

Can the LTC6258IS6#TRMPBF operate from a 1.8V supply while maintaining full rail-to-rail output swing?

Yes, the LTC6258IS6#TRMPBF is fully specified at 1.8V supply: output swing remains rail-to-rail with ≤50mV headroom at no load and ≤230mV at 1mA sink/source, as confirmed in the 1.8V Electrical Characteristics table (page 6). This enables direct interfacing with 1.8V logic and low-voltage ADCs in modern ultra-low-power microcontrollers without level translation.