Analog Devices Inc. LTC6911HMS-2#PBF

Overview

LTC6911HMS-2#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, digitally programmable gain amplifier (PGA) with inverting architecture and 3-bit parallel gain control. It delivers precise, matched gains of 0, 1, 2, 4, 8, 16, 32, and 64 V/V across both channels, features rail-to-rail input/output swing, operates from 2.7V to 10.5V total supply, and maintains channel-to-channel gain matching ≤0.1 dB (max) over –40°C to +125°C. It is used in high-precision data acquisition systems requiring dynamic range optimization and automatic gain control.

For engineers reviewing the LTC6911HMS-2#PBF datasheet, LTC6911HMS-2#PBF pinout, LTC6911HMS-2#PBF application, or LTC6911HMS-2#PBF equivalent, key selection considerations include its H-grade temperature rating (–40°C to +125°C), MSOP-10 package, 11 MHz gain-bandwidth product at G = 64, 10 nV/√Hz input voltage noise density at G = 1, and guaranteed channel matching under full operating conditions.

Technical Context

The LTC6911HMS-2#PBF implements two fully independent, MOS-input inverting amplifiers sharing a common 3-bit parallel digital interface (G0–G2) that simultaneously programs identical gain settings on both channels. Its internal resistor ladder network and precision op-amp topology ensure monotonic gain steps and low gain error (±0.07 dB typical at G = 1).

It integrates an internal AGND reference generator for single-supply operation, supports rail-to-rail input signals at unity gain, and maintains linear output swing within 20 mV of rails (at RL = 10 kΩ, VS = 5 V). Gain-bandwidth scaling follows inverse proportionality: –3 dB bandwidth is ~7.5 MHz at G = 1 and ~0.5 MHz at G = 64.

Key Specifications

Pinout & Package

Package: 10-lead MSOP (3 mm × 3 mm, 0.5 mm pitch), exposed pad (not electrically connected), RoHS-compliant, moisture sensitivity level 1.

Key Features

Applications

Equivalent & Alternatives

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

Compared with AD8253ARMZ and LTC6915IMS-2#PBF, the LTC6911HMS-2#PBF uniquely delivers guaranteed dual-channel gain matching ≤0.1 dB over –40°C to +125°C with parallel 3-bit control and zero-gain disable - making it optimal for cost-sensitive, high-reliability dual-path analog front-ends where timing determinism and thermal tracking are critical.

Availability

LTC6911HMS-2#PBF is available at Aetrix Electronics and suitable for industrial data acquisition, automotive sensor conditioning, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for LTC6911HMS-2#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 dual-channel programmable gain applications demanding tight matching, wide supply range, and robust operation in harsh environments.

FAQ

What is the maximum operating temperature for the LTC6911HMS-2#PBF?

The LTC6911HMS-2#PBF is rated for continuous operation from –40°C to +125°C ambient temperature, with guaranteed electrical performance across this full range. This H-grade qualification makes it suitable for under-hood automotive, industrial motor drives, and other high-temperature environments where standard C- or I-grade PGAs would fail.

Does the LTC6911HMS-2#PBF support single-supply operation?

Yes, the LTC6911HMS-2#PBF supports true single-supply operation via its internally generated AGND reference pin (Pin 2), which provides a stable mid-supply voltage (e.g., 2.5 V at VS = 5 V). Both inputs and outputs are referenced to AGND, enabling rail-to-rail input capability at unity gain and eliminating the need for external level-shifting circuitry.

What is the gain error specification for the LTC6911HMS-2#PBF at G = 64?

At G = 64 and VS = 5 V, the LTC6911HMS-2#PBF exhibits a typical gain error of ±0.07 dB (±0.8%) over the full –40°C to +125°C temperature range. This is specified in the Electrical Characteristics table under "Voltage Gain" for LTC6911-2, with worst-case deviation bounded by the MAX column values.

Can the LTC6911HMS-2#PBF drive a 500 Ω load?

Yes, the LTC6911HMS-2#PBF can drive a 500 Ω load, though output swing is reduced: at VS = 5 V, the output swings to within 90–175 mV of each rail depending on gain and supply configuration. For G = 1, the typical low-side swing is 100 mV above V– and high-side swing is 90 mV below V+, preserving >4.7 V of peak-to-peak linear range.

Is there a non-inverting version of the LTC6911HMS-2#PBF?

No - the LTC6911HMS-2#PBF is strictly an inverting PGA. All eight gain settings (0, 1, 2, 4, 8, 16, 32, 64 V/V) produce inverted output polarity. For non-inverting gain, external signal inversion (e.g., using a second op-amp stage) or alternative devices like the LTC6910 (non-inverting variant, discontinued) would be required - but no active non-inverting pin-compatible replacement exists in the current Analog Devices portfolio.