Small Size, Low-Power, Unidirectional, Zero-Drift Current-sense Amplifier
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- Parameters
- Features
- Description
| Part number |
SY24644 |
| Features |
Input supply, Small package |
| Direction |
Unidirection |
| Common mode voltage (min)(V) |
1.8 |
| Common mode voltage (max)(V) |
5.5 |
| Vcc max (V) |
5.5 |
| Vcc min (V) |
1.8 |
| Vshunt Input offset (±)(max)(μV) |
45 |
| Voltage gain (V/V) |
100, 200 |
| Bandwidth (kHz) |
5 |
| CMRR (min)(dB) |
100 |
| Gain error (max)(%) |
0.18 |
| Iq (max)(mA) |
0.03 |
| Operating temperature range(°C) |
-40 to 125 |
| Package |
CSP |
| Pin count |
4 |
- Voltage-output, Current-sense Amplifier
- Common-mode Range: +1.8V to +5.5V
- Gain=100V/V
- Low offset Voltage: ±7μV (typical)
- Offset Drift: 0.2 µV/℃ (maximum)
- Gain Error: 0.06% (typical)
- Gain Drift: 1 ppm/℃ (maximum)
- Quiescent Current: 18μA (typical)
- Buffered Voltage Output: No Additional
- OP-AMP Needed
- Compact Package: CSP0.76×0.76-4
The SY24644 is a high-side voltage output current-sense amplifier that can sense drops across shunts at common-mode voltages from +1.8V to +5.5V with a gain of 100V/V. The small size makes it suitable for applications in cell phones, mobile accessories, notebooks, portable medical, and all battery-operated portable devices where the precision and space of current sensing are critical.
The device operates from a single +1.8V to +5.5V power supply, drawing 18μA (typical) of supply current. The SY24644 operating temperature range is from –40°C to +125°C.
Supply voltage for the device is shared with the IN+ pin to reduce the pin count.
The SY24644 is available in a 4-bump, ultra-thin CSP package.
Evaluation Board
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Photo of evaluation board
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Photo of evaluation board
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Photo of evaluation board
The EVB_SY24644WMS is intended for evaluating Small Size, Low-Power, Unidirectional, Zero-Drift Current-sense Amplifier SY24644WMS.
