The SGM838 is a high-accuracy digital current sensor and power monitor with a 16-bit sigma-delta ADC inside. The device is capable of measuring a full-scale differential input of either ±163.84mV or ±40.96mV across a resistive shunt sense element, with -0.3V to +85V common mode voltage.
The SGM838 features current, bus voltage, temperature and power monitoring along with an alert capability. The built-in temperature sensor has an accuracy of ±1℃ for measuring the die temperature and is helpful in monitoring the ambient temperature of the system.
Targeted at precision measurement applications, the SGM838 features low offset and low gain drift to maintain accuracy across temperature. Additionally, for wide-range current applications, its low offset voltage and low noise enable measurements from A to kA while ensuring low power loss. Furthermore, the low input bias current facilitates the use of high resistance sensing resistors, ensuring precise micro-amp range measurements.
The ADC conversion time of the device can be selected from 150µs to 4.12ms and sample averaging can be selected from 1x to 1024x, which further contributes to reducing the noise.
The SGM838 is available in a Green MSOP-10 package and specified over the operating temperature range of -40℃ to +125℃.
- High-Resolution, 16-Bit Sigma-Delta ADC
- Gain Accuracy:
- Gain Error: ±0.35% (MAX)
- Gain Drift: ±35ppm/℃ (MAX)
- Offset Accuracy:
- Offset Voltage: ±30µV (MAX)
- Offset Drift: ±300nV/℃ (MAX)
- Power Monitoring Accuracy:
- 1.3% (MAX) at -40℃ to +125℃
- Fast Alert Response: 275μs
- Input Common-Mode Voltage Range: -0.3V to +85V
- Sense Bus Voltage Range: 0V to 85V
- Excellent CMRR: 145dB (TYP)
- Supply Voltage Range: 2.7V to 5.5V
- Shutdown Current: 2.5µA (TYP)
- Shunt Full-Scale Differential Range:
- ±163.84mV/±40.96mV
- Input Bias Current: 8nA (MAX)
- Temperature Sensor: ±1℃ (TYP at +25℃)
- Selectable Averaging and Conversion Times
- 3.4MHz High-Speed I2C Interface
- 16 Pin-Selectable Addresses
- Available in a Green MSOP-10 package
DC/DC Converters
Telecom Equipment Power Inverters
Industrial Battery Packs
Enterprise Servers
Power-over-Ethernet (PoE)
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) | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
SGM838XMS10G/TR | アクティブ | MSOP-10 | 10 | YES | YES | YES | YES | MSL1 | -40℃ to +125℃ | 閲覧 | 閲覧 | 1-24 units : $1.4/unit 25-99 units : $1.2/unit 100-249 units : $1/unit 250-499 units : $0.8/unit 500-999 units : $0.7/unit 1000-9999 units : $0.52/unit | 3K-9K : 14 days 10K-99K : 28 days 100K-999K : 70 days 1000K and above : 98 days |
* 再販価格は参考価格です。正式な見積もりについては、代理店にお問い合わせください。
** 提供されるリードタイムは参考情報であり、異なる状況に応じて変更される可能性があります。
