Analog Devices Inc. LTC6102CDD-1#PBF

Overview

LTC6102CDD-1#PBF from Analog Devices (formerly Linear Technology) is a precision zero-drift high-side current sense amplifier in an 8-lead 3mm × 3mm DFN package, featuring ±10 µV max input offset, ±50 nV/°C max drift, 1 µs step response, 4 V to 60 V supply range, and integrated disable mode for standby power reduction. It enables accurate shunt-based current monitoring in battery management and industrial power systems.

For engineers reviewing the LTC6102CDD-1#PBF datasheet, LTC6102CDD-1#PBF pinout, LTC6102CDD-1#PBF application, or LTC6102CDD-1#PBF equivalent, key selection criteria include input offset stability over temperature, enable pin logic thresholds (VENL = 0.8 V, VENH = 2.2 V), output current capability (1 mA), disable current (1 µA max), and compatibility with low-value shunts (e.g., 1 mΩ at 10 A).

Technical Context

The LTC6102CDD-1#PBF implements a precision current-to-current transducer architecture: its internal sense amplifier forces –INS to track +IN, enabling accurate differential sensing across RSENSE while rejecting common-mode voltages up to 60 V. Gain is set externally via RIN and ROUT, supporting configurable transconductance (IOUT = VSENSE / RIN).

It features a dedicated EN pin (Pin 3) referenced to V–, with defined turn-on (500 µs) and turn-off (100 µs) timing, and operates across 0°C to 70°C ambient. The device delivers ground-referred analog output current, requiring only an external ROUT to generate voltage output - eliminating need for level-shifting circuitry.

Key Specifications

Pinout & Package

Package: 8-lead (3 mm × 3 mm) plastic DFN with exposed pad (Pin 9 = V–), RoHS-compliant, lead-free finish. Thermal resistance θJA = 43°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 INA240A1QDRQ1 and MAX40056ATA+T, the LTC6102CDD-1#PBF uniquely combines ultra-low drift, wide 4 V–60 V operation, and sub-µA disable current - making it optimal for precision, wide-input, battery-sensitive industrial monitoring where long-term stability and low-power sleep modes are essential.

Availability

LTC6102CDD-1#PBF is available at Aetrix Electronics and suitable for battery management, industrial power supply monitoring, and automotive load protection requiring stable component supply, guaranteed 0°C to 70°C operation, and RoHS-compliant packaging.

Supply support for LTC6102CDD-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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.

The LTC6102 product line was designed specifically for precision high-side current sensing in demanding power systems - emphasizing zero-drift accuracy, wide common-mode range, and minimal external component count.

FAQ

What is the maximum common-mode voltage the LTC6102CDD-1#PBF can handle?

The LTC6102CDD-1#PBF supports a maximum differential input voltage of 60 V between –INS and +IN for up to one second, and indefinite operation at up to 20 V below –INS on +IN. Its absolute maximum total supply voltage is 70 V (V+ to V–), enabling reliable high-side sensing on 48 V and 60 V bus systems without external attenuation or isolation.

Does the LTC6102CDD-1#PBF require external resistors to set gain?

Yes, the LTC6102CDD-1#PBF uses two external resistors: RIN (connected between V+ and –INF) sets transconductance (IOUT = VSENSE / RIN), and ROUT (connected between OUT and V–) converts output current to voltage (VOUT = IOUT × ROUT). This resistor-based configuration provides flexible, precise gain tuning without trimming or calibration.

How does the enable pin (EN) function on the LTC6102CDD-1#PBF?

The EN pin (Pin 3) is active-high: applying ≥2.2 V enables normal operation with typical supply current of 400 µA at 12 V; pulling ≤0.8 V disables the device, reducing supply current to ≤1 µA. Turn-on time is 500 µs and turn-off time is 100 µs, allowing controlled entry/exit from low-power states in battery-operated systems using the LTC6102CDD-1#PBF.

Can the LTC6102CDD-1#PBF drive a 10 kΩ load resistor directly?

Yes - the LTC6102CDD-1#PBF delivers up to 1 mA output current, so it can drive a 10 kΩ load to produce up to 10 V output (VOUT = IOUT × ROUT). At 12 V supply and 10 kΩ load, the output remains within its specified maximum output voltage (11.7 V), ensuring linear operation and full-scale headroom for ADC interfacing in the LTC6102CDD-1#PBF design.

What is the minimum shunt resistor value usable with the LTC6102CDD-1#PBF for 10 A measurement?

With ±10 µV max input offset, the LTC6102CDD-1#PBF supports accurate measurement down to ~1 µV sense voltage. For 10 A full-scale, a 100 µΩ shunt yields 1 mV - well above offset, giving >100:1 signal-to-error ratio. Practical minimum is ~500 µΩ for robust noise margin; lower values (e.g., 100 µΩ) are viable with careful layout and filtering, as confirmed in LTC6102CDD-1#PBF application notes.