company blog about ADI LT6105IMS8 Precision Rail-To-Rail Input Current Sense Amplifier

ADI LT6105IMS8 Precision Rail-To-Rail Input Current Sense Amplifier

Shenzhen Mingjiada Electronics Co., Ltd., as a world-renowned authorized independent distributor of electronic components, specializes in supplying ADI LT6105IMS8 precision rail-to-rail input current sense amplifier. This micropower, high-precision current sense amplifier has become an ideal choice for industrial control, power management, automotive electronics and other fields with its excellent performance and wide application areas.

Product Description Of LT6105IMS8

LT6105IMS8 is a micropower, precision current sense amplifier with a very wide input common mode range. The LT6105IMS8 monitors unidirectional current via the voltage across an external sense resistor. The input common mode range extends from –0.3V to 44V, with respect to the negative supply voltage (V –). This allows the LT6105IMS8 to operate as a high side current sense monitor or a low side current sense monitor. It also allows the LT6105IMS8 to monitor current on a negative supply voltage, as well as continuously monitor a battery from full charge to depletion. The inputs of LT6105IMS8 can withstand differential voltages up to ±44V, which makes it ideal for monitoring a fuse or MOSFET switch.

Gain is configured with external resistors from 1V/V to 100V/V. The input common mode rejection and power supply rejection are in excess of 100dB and the input offset voltage is less than 300µV. A minimum slew rate of 2V/µs ensures fast response to unexpected current changes.

LT6105IMS8 can operate from an independent power supply of 2.85V to 36V and draws only 150µA. When V + is powered down, the sense pins are biased off. This prevents loading of the monitored circuit, irrespective of the sense voltage. The LT6105IMS8 is available in a 6-lead DFN and 8-lead MSOP package.

Specification Of LT6105IMS8

Product Category: Current Sense Amplifiers

Number of Channels: 1 Channel

GBP - Gain Bandwidth Product: 100 kHz

Vcm - Common Mode Voltage: - 300 mV to 44 V

CMRR - Common Mode Rejection Ratio: 120 dB

Ib - Input Bias Current: 15 uA

Vos - Input Offset Voltage: - 300 uV

Supply Voltage - Max: 36 V

Supply Voltage - Min: 2.85 V

Operating Supply Current: 200 uA

Gain Error: 1.3 %

Minimum Operating Temperature: - 40 ℃

Maximum Operating Temperature: + 85 ℃

Key Features Of LT6105IMS8

Ultra-wide input range: -0.3V to 44V common mode voltage range

High accuracy: input offset voltage less than 300μV

Configurable gain: adjustable from 1V/V to 100V/V by external resistors

Excellent rejection ratio: input common mode rejection and power supply rejection exceed 100dB

Fast response: minimum slew rate 2V/μs

Low power consumption: supply current is only 250μA

Features Of LT6105IMS8

Very Wide, Over-the-Top®, Input Common Mode Range

- Extends 44V Above V – (Independent of V +)

- Extends –0.3V Below V –

Wide Power Supply Range: 2.85V to 36V

Input Offset Voltage: 300µV Maximum

Gain Accuracy: 1% Max

Gain Configurable with External Resistors

Operating Current: 150µA

Slew Rate: 2V/µs

Sense Input Current When Powered Down: 1nA

Full-Scale Output Current: 1mA Minimum

Operating Temperature Range –40°C to 125°C

Available in 2mm × 3mm DFN and 8-Lead MSOP Packages

Application Of LT6105IMS8

Industrial applications:

High-side or low-side current detection

Current monitoring on positive or negative supply voltages

Fuse/MOSFET switch monitoring

Automotive electronics:

Battery management system (BMS) current monitoring

Motor drive current detection

In-vehicle power management

Consumer electronics:

Portable device power management

Battery charge and discharge monitoring

Smart home system current detection

Test and measurement:

Precision test equipment

Laboratory instruments

Automated test system

Gain of 50 Current Sense Amplifier Of LT6105IMS8

Gain Error vs Input Voltage Of LT6105IMS8