The SGM8194 series is a low power, high DC and AC CMRR, voltage output current-sense amplifier. This device is designed to provide optimal performance in battery management systems requiring over-current protection and precision current measurement. The SGM8194 can sense voltage drops across current-sense resistor with common mode voltage from -0.1V to 40V. The common mode voltage is independent with the power supply voltage due to its AC coupling and related signal sampling structure.
The SGM8194 features low input bias current, low offset voltage and zero-drift. The dynamic range is extended due to the latter two features when measuring current. Larger current-sense resistor can be used in mA level measurement application and it provides accurate current measurements. Small current-sense resistor is always used to reduce power loss in power efficiency sensitive systems. The SGM8194 can provide accurate current measurements in system where small current-sense resistor is used.
The SGM8194 series provides two fixed gains: 100V/V and 200V/V. It operates with a single power supply from 2.1V to 5.5V. When this device is enabled, it draws a 60μA typical power supply current, and it consumes only 10nA when disabled.
The SGM8194 is available in Green UTQFN-1.8×1.4-10L and SC70-6 packages. It is rated over the -40℃ to +125℃ temperature range.
Operating Power Supply Range: 2.1V to 5.5V
Common Mode Voltage Range: -0.1V to 40V
CMRR: 150dB (TYP)
Low Offset Voltage: ±50μV (MAX)
Low Bias Current: 0.5nA (TYP)
Supply Current: 60μA (TYP)
Shutdown Current: 10nA (TYP)
Choice of Gains:
SGM8194C3 Gain: 100V/V
SGM8194A3 Gain: 100V/V
SGM8194A4 Gain: 200V/V
Gain Error
±0.4% (MAX) for SC70-6 Package
±0.45% (MAX) for UTQFN-1.8×1.4-10L Package
Supports Bidirectional Current Sense
-40℃ to +125℃ Operating Temperature Range
Available in Green UTQFN-1.8×1.4-10L and SC70-6 Packages
Battery Fuel Gauge
Notebook PC
Tablet PC
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) | Lead Time** (Volume Range: Days) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM8194A3XC6G/TR | Active | SC70-6 | 6 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days | |
SGM8194A4XC6G/TR | Active | SC70-6 | 6 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.75/unit 25-99 units : $1.5/unit 100-249 units : $1.25/unit 250-499 units : $1/unit 500-999 units : $0.875/unit 1000-9999 units : $0.65/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days | |
SGM8194A4XUWQ10G/TR | Active | UTQFN-1.8×1.4-10L | 10 | Yes | Yes | Yes | Yes | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $2.275/unit 25-99 units : $1.95/unit 100-249 units : $1.625/unit 250-499 units : $1.3/unit 500-999 units : $1.1375/unit 1000-9999 units : $0.845/unit | 3K-9K : 14 days 10K-99K : 35 days 100K-999K : 84 days 1000K and above : 119 days | |
SGM8194C3XUWQ10G/TR | Active | UTQFN-1.8×1.4-10L | 10 | Yes | Yes | Yes | Yes | -40℃ to +125℃ | View | View |
* 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.
