SGM875

Active

-4V to 48V, 400kHz, Bidirectional, High-Precision Current Sense Amplifier with Enhanced PWM Rejection

SGM875.pdf

The SGM875 device is a bidirectional, fixed gain, voltage-output, current-sense amplifier which features enhanced PWM rejection and wide common-mode voltage range from -4V to 48V. The device is powered by a single 2.7V to 5.5V supply, and draws supply current of 0.7mA (TYP). There are four fixed gain options: 20V/V, 50V/V, 100V/V and 200V/V, providing more flexibility to meet the gain requirements in various applications.

The enhanced PWM rejection suppresses large common-mode transients (ΔV/Δt) on the output signal, which is particularly relevant for applications utilizing pulse width modulation (PWM), such as motor drivers. The negative common-mode voltage capability allows the device to operate normally even when the voltage is below ground, which is useful in typical applications like the flyback period of a solenoid.

These characteristics make accurate current measurement without large transients and related recovery disturbances on the output voltage.

The SGM875 is available in a Green SC70-6 package.

FEATURES

Enhanced PWM Rejection
Wide Common-Mode Voltage Range: -4V to 48V
High Signal Bandwidth:
- SGM875A/B/C: 400kHz
- SGM875D: 340kHz
Slew Rate: 4V/µs
Gain Error Accuracy:
- SGM875A/B/C: ±0.4% (MAX)
- SGM875D: ±0.55% (MAX)
Offset Voltage Accuracy:
- +25℃: ±130µV (MAX)
- Offset Drift: 1µV/℃ (MAX)
Bidirectional Current-Sensing Capability
Available Gains:
- SGM875A: 20V/V
- SGM875B: 50V/V
- SGM875C: 100V/V
- SGM875D: 200V/V
Quiescent Current: 0.7mA (TYP)
Available in a Green SC70-6 Package

APPLICATIONS

Motor Control
Power Management
Battery Monitors and Balancers
Lighting Control
Solar Inverters

Ordering Information

Part Number	Status	Package	Pins	Pd-Free	RoHS	REACH	Green	MSL Rating	Operating Temperature Range	Material Content	Reliability Report	Unit Resale Price* (Volume Range: in USD)
SGM875AXC6G/TR	Active	SC70-6	6	YES	YES	YES	YES	MSL1	-40℃ to +125℃	View	View	1-24 units : $0.875/unit 25-99 units : $0.75/unit 100-249 units : $0.625/unit 259-499 units : $0.5/unit 500-999 units : $0.4375/unit 1000-9999 units : $0.325/unit
SGM875BXC6G/TR	Active	SC70-6	6	YES	YES	YES	YES	MSL1	-40℃ to +125℃	View	View	1-24 units : $0.875/unit 25-99 units : $0.75/unit 100-249 units : $0.625/unit 259-499 units : $0.5/unit 500-999 units : $0.4375/unit 1000-9999 units : $0.325/unit
SGM875CXC6G/TR	Active	SC70-6	6	YES	YES	YES	YES	MSL1	-40℃ to +125℃	View	View	1-24 units : $0.875/unit 25-99 units : $0.75/unit 100-249 units : $0.625/unit 259-499 units : $0.5/unit 500-999 units : $0.4375/unit 1000-9999 units : $0.325/unit
SGM875DXC6G/TR	Active	SC70-6	6	YES	YES	YES	YES	MSL1	-40℃ to +125℃	View	View	1-24 units : $0.875/unit 25-99 units : $0.75/unit 100-249 units : $0.625/unit 259-499 units : $0.5/unit 500-999 units : $0.4375/unit 1000-9999 units : $0.325/unit

* The unit resale price is for reference purposes only. Please contact our distributors for a formal quotation.

** The lead time provided is for reference purposes only and is subject to change based on different circumstances.