SGM845
-16V to 80V, 1.3MHz, High-Precision Current Sense Amplifier with Open-Drain Comparator and Reference
The SGM845 is a high-precision current sense amplifier with wide common-mode range from -16V to 80V to measure voltage drops across shunt resistors, irrespective of the supply voltage. The small gain error (±0.03%, TYP), low offset voltage (±100µV, TYP), and high DC CMRR (130dB, TYP) make it capable for high precision current measurements. The device has a high signal bandwidth of 1.3MHz, which is designed for high-voltage high-speed applications such as rapid over-current protection. The SGM845 includes an open-drain comparator and a 0.6V internal reference. The current trip point is adjustable via two external resistors. The comparator also features a latching function that can be overridden by grounding the nRESET pin or leaving it open.
Functioning from a single supply voltage between 2.7V and 20V, the SGM845 consumes low supply current of 1.5mA. It is offered in five different gain settings: 20V/V, 50V/V, 100V/V, 200V/V, and 500V/V. These gain options cater to a diverse range of current-sensing applications, covering a broad dynamic range.
The SGM845 is available in a Green MSOP-8 package and specified over an operating temperature range of −40°C to +125°C.
- Wide Common-Mode Voltage Range:
- Operational Voltage: -16V to 80V
- Survival Voltage: -20V to 85V
- High Signal Bandwidth: 1.3MHz
- Slew Rate: 8V/µs
- Excellent CMRR: 130dB
- Gain Error Accuracy: ±0.03% (TYP), ±0.65% (MAX)
- Offset Voltage Accuracy: ±100µV (TYP), ±600µV (MAX)
- On-Board Open-Drain Comparator
- Internal Comparator Voltage Reference: 0.6V
- Propagation Delay Time: 1µs
- Comparator with Latching Function
- Available Gains:
- SGM845A: 20V/V
- SGM845B: 50V/V
- SGM845C: 100V/V
- SGM845D: 200V/V
- SGM845E: 500V/V
- Available in a Green MSOP-8 Package
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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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM845AXMS8G/TR | Active | MSOP-8 | 8 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $1.05/unit 25-99 units : $0.9/unit 100-249 units : $0.75/unit 250-499 units : $0.6/unit 500-999 units : $0.525/unit 1000-9999 units : $0.39/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days | |
SGM845BXMS8G/TR | Active | MSOP-8 | 8 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days | |
SGM845CXMS8G/TR | Active | MSOP-8 | 8 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days | |
SGM845DXMS8G/TR | Active | MSOP-8 | 8 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days | |
SGM845EXMS8G/TR | Active | MSOP-8 | 8 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | View | View | 1-24 units : $0.7/unit 25-99 units : $0.6/unit 100-249 units : $0.5/unit 250-499 units : $0.4/unit 500-999 units : $0.35/unit 1000-9999 units : $0.26/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 84 days 1000K and above : 112 days |
* 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.
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