Analog Devices Inc. LTC6911HMS-1#PBF

Overview

LTC6911HMS-1#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, rail-to-rail input/output, digitally programmable gain amplifier (PGA) with 3-bit parallel gain control and inverting architecture. It delivers precise inverting gains of 0, 1, 2, 5, 10, 20, 50, or 100 V/V, channel-to-channel gain matching ≤0.1 dB, 11 MHz gain-bandwidth product, and operates from 2.7V to 10.5V total supply. It is used in high-precision data acquisition systems requiring dynamic range up to 120 dB.

For engineers reviewing the LTC6911HMS-1#PBF datasheet, LTC6911HMS-1#PBF pinout, LTC6911HMS-1#PBF application, or LTC6911HMS-1#PBF equivalent, key selection criteria include guaranteed H-grade operation from –40°C to 125°C, matched dual-channel performance, rail-to-rail signal handling at unity gain, low 10 nV/√Hz input voltage noise, and MSOP-10 package compatibility with space-constrained industrial sensor interfaces.

Technical Context

The LTC6911HMS-1#PBF implements two fully matched, MOS-input operational amplifiers sharing a common 3-bit digital gain control interface. Its internal resistor ladder network sets precise inverting gain while maintaining tight channel-to-channel tracking - critical for differential signal conditioning and automatic ranging circuits.

It features an internally generated half-supply AGND reference enabling true single-supply operation without external biasing. Gain accuracy remains stable across temperature (≤0.2 dB max mismatch at G=100), and its 11 MHz GBW supports wideband applications including ultrasound front-ends and high-speed ADC driver stages.

Key Specifications

Pinout & Package

Package: 10-lead MSOP (3 mm × 3 mm, 0.5 mm pitch), thermally enhanced with exposed pad (not electrically connected). Pin 1 marked by dot; pin numbering follows standard MSOP convention (counterclockwise from dot).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar programmable gain amplifier applications.

Compared with LTC6911IMS-1#PBF and AD8253ARMZ, the LTC6911HMS-1#PBF uniquely combines H-grade temperature robustness, dual-channel matching, parallel 3-bit control, and zero-gain mute - making it optimal for space-constrained, high-reliability industrial and automotive signal chains where deterministic timing and thermal stability are non-negotiable.

Availability

LTC6911HMS-1#PBF is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor interface, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6911HMS-1#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 technologies, serving industrial, automotive, communications, and healthcare markets.

The LTC6911 family was designed by Linear Technology (acquired by ADI in 2017) specifically for precision, low-noise, digitally controlled amplification in space- and power-constrained systems - emphasizing channel matching, rail-to-rail operation, and robust temperature performance.

FAQ

What gain settings does the LTC6911HMS-1#PBF support?

The LTC6911HMS-1#PBF supports eight discrete inverting voltage gains: 0 (mute), 1, 2, 5, 10, 20, 50, and 100 V/V, selected via its 3-bit parallel digital interface (G2, G1, G0 pins). These values are fixed and factory-trimmed; no interpolation or intermediate gains are available. Gain accuracy is specified over the full –40°C to +125°C range for the H-grade device.

Does the LTC6911HMS-1#PBF require external components for single-supply operation?

No, the LTC6911HMS-1#PBF does not require external components for single-supply operation. Its AGND pin provides an internally generated mid-supply reference, eliminating the need for external resistive dividers or precision voltage references. This simplifies PCB layout and improves stability across temperature and supply variations - a key advantage of the LTC6911HMS-1#PBF in battery-powered or 3.3 V/5 V systems.

How does channel-to-channel gain matching perform at high gain settings on the LTC6911HMS-1#PBF?

At G=100, the LTC6911HMS-1#PBF guarantees ≤0.20 dB maximum channel-to-channel gain mismatch over the full –40°C to +125°C temperature range. At lower gains (G=1 to G=20), mismatch is tighter (≤0.15 dB), and at G=1, it is ≤0.10 dB. This matching is achieved through laser-trimmed resistor arrays and matched amplifier cores - critical for differential measurements and automatic ranging where relative gain error directly impacts measurement accuracy.

Can the LTC6911HMS-1#PBF drive a 500 Ω load while maintaining rail-to-rail output swing?

Yes, the LTC6911HMS-1#PBF can drive a 500 Ω load with rail-to-rail output swing, though voltage compliance is reduced versus high-impedance loads. At 5 V supply, output swing is typically within 90–190 mV of each rail (low/high) depending on direction and loading. The device delivers ±35 mA short-circuit current, ensuring robust drive capability - confirmed in the Electrical Characteristics table for the H-grade version of the LTC6911HMS-1#PBF.

Is the LTC6911HMS-1#PBF pin-compatible with other variants in the LTC6911 family?

Yes, the LTC6911HMS-1#PBF is pin-compatible with all other MSOP-10 variants in the LTC6911 family, including LTC6911CMS-1#PBF (C-grade), LTC6911IMS-1#PBF (I-grade), and LTC6911HMS-2#PBF (–2 variant). All share identical pinout, footprint, and electrical interface; only temperature grade and gain table differ. This allows drop-in replacement during design-in or qualification without PCB revision - a verified mechanical and functional compatibility of the LTC6911HMS-1#PBF.