Analog Devices Inc. LTC6101AHMS8#PBF

Overview

LTC6101AHMS8#PBF from Analog Devices is a high-voltage, high-side current sense amplifier in 8-lead MSOP package, operating from 4V to 60V supply with ±300 µV max input offset voltage, 1 µs step response, and –40°C to 125°C specified temperature range. It converts shunt voltage into ground-referenced output current for precision battery monitoring and industrial power management.

For engineers reviewing the LTC6101AHMS8#PBF datasheet, LTC6101AHMS8#PBF pinout, LTC6101AHMS8#PBF application, or LTC6101AHMS8#PBF equivalent, key selection criteria include high common-mode voltage tolerance (up to 60V), low quiescent current (250 µA at 12V), gain configurability via external resistors, PSRR of 118 dB min, and compatibility with Kelvin-sense resistor layouts.

Technical Context

The LTC6101AHMS8#PBF uses a high-impedance current-output architecture where VSENSE across an external shunt drives output current IOUT = VSENSE/RIN, enabling precise level-shifting from high common-mode voltages to ground-referenced signals. Its internal sense amplifier forces –IN to track +IN potential, eliminating common-mode rejection dependency on resistor matching.

It supports configurable gain via RIN and ROUT, delivers up to 1 mA output current, maintains 140 kHz signal bandwidth at 200 µA load, and achieves 118 dB PSRR over 6–60V supply range - critical for stable operation in noisy automotive and industrial bus environments.

Key Specifications

Pinout & Package

8-Lead Plastic MSOP (MS8) package with 0.65 mm lead pitch and 3.0 mm × 3.0 mm body size; designed for high-voltage spacing and thermal performance (θJA = 300°C/W).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar high-side current sense amplifier applications.

Compared with MAX4080ASA+T and INA240A1DR, the LTC6101AHMS8#PBF offers superior offset performance (±300µV vs ±500µV/±5µV) and configurable gain for optimized dynamic range, though it requires two external resistors and has higher IQ than MAX4080 - making it ideal for high-accuracy, unidirectional, medium-power applications.

Availability

LTC6101AHMS8#PBF is available at Aetrix Electronics and suitable for battery management systems, industrial motor drives, telecom rectifier modules, and server power supply designs requiring stable component supply, long-term lifecycle support, and guaranteed parametric performance across –40°C to 125°C.

Supply support for LTC6101AHMS8#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. is a global semiconductor leader specializing in high-performance analog, mixed-signal, and digital signal processing technologies for precision measurement and control.

The LTC6101 family is designed for high-voltage, high-side current sensing in demanding environments - delivering low-offset, fast-response, and wide-supply operation for automotive, industrial, and telecom power systems.

FAQ

What is the maximum common-mode voltage the LTC6101AHMS8#PBF can measure?

The LTC6101AHMS8#PBF operates with a supply voltage range of 4V to 60V, and its absolute maximum total supply voltage (V+ to V–) is 70V. While it does not specify a standalone common-mode voltage rating, its architecture inherently supports sensing on rails up to 60V above ground when V– is tied to system ground - confirmed by typical application circuits showing operation at 12V, 48V, and 60V supplies. The device's internal design ensures accurate VSENSE measurement regardless of V+ level, provided V+ − V– remains within rated limits.

Can the LTC6101AHMS8#PBF be used with a 3.3V microcontroller ADC?

Yes, the LTC6101AHMS8#PBF can interface directly with a 3.3V microcontroller ADC by selecting ROUT to scale the output voltage appropriately. For example, with RIN = 100 Ω and VSENSE = 50 mV (at 10A through 5 mΩ shunt), IOUT = 500 µA; choosing ROUT = 6.6 kΩ yields VOUT = 3.3V full-scale. The device's minimum output voltage is 0 mV (typical), and its output swing is rail-to-rail relative to V–, making it fully compatible with 3.3V single-ended ADC inputs when V– = 0 V.

Does the LTC6101AHMS8#PBF require external compensation capacitors?

No, the LTC6101AHMS8#PBF is internally compensated and does not require external compensation capacitors for stability. Its current-output architecture and internal loop design ensure unconditional stability across all valid RIN and ROUT combinations within datasheet limits. Typical application circuits show no added capacitance on OUT or other pins, and the device maintains phase margin >45° across 100 Hz–200 kHz bandwidth with loads up to 1 nF - verified in Figure G14–G17 of the datasheet.

How does the LTC6101AHMS8#PBF handle input overvoltage conditions?

The LTC6101AHMS8#PBF specifies a maximum input sense voltage (VSENSE) of 500 mV and absolute maximum ratings limiting –IN pin voltage to (V+ − 4V). Exceeding 500 mV VSENSE degrades accuracy due to increased offset error, while violating the (V+ − 4V) limit on –IN risks permanent damage. To protect against overvoltage, designers should use clamping diodes or Zener-limited shunt networks - as shown in Figure 3a of the datasheet - especially in systems prone to load dump or inductive kickback.

Is the LTC6101AHMS8#PBF RoHS-compliant and lead-free?

Yes, the LTC6101AHMS8#PBF carries the "#PBF" suffix, indicating it is lead-free and RoHS-compliant per Analog Devices' standard specifications. The part uses matte tin lead finish, meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1), and is qualified for reflow soldering per IPC/JEDEC J-STD-020. Full compliance documentation, including test reports and material declarations, is available from Analog Devices' product page for LTC6101AHMS8#PBF.