Features
- On-chip coil sensor
- Low noise density: En = 50nV/√Hz at 10Hz
- Low supply voltage: VS = 2.7V to 3.6V
- Temperature range: -40°C to +105°C
- Small 16 Ld TSSOP package
Description
The RAA788000 is a low-power, power-line current sensor for contactless AC current measurements in the range of 2A to 5000A. The device consists of an on-chip Rogowski coil, a buffer amplifier, and a signal amplifier.
From an alternating power-line current, the magnetic flux flows through the on-chip coil, generating an electromotive force (EMF) that is amplified and filtered by a signal amplifier.
The amplifier output is typically fed into an analog-to-digital converter with a subsequent signal processor that calculates the current magnitude.
The RAA788000 operates from a single 2.7V to 3.6V supply. The device is available in a small 16 Ld TSSOP package and has an operation specified for the temperature range from -40°C to +105°C.
The RAA788000 is available in a 16 Ld thin shrink small outline package (TSSOP).
Parameters
| Attributes | Value |
|---|---|
| VS (Min) (V) | 2.7 |
| VS (Max) (V) | 3.6 |
| PSRR (db) | 86 |
| CMRR (dB) | 101 |
| Common Mode Input Range (V) | 3.6 |
| Offset Voltage (Max) (mV) | 3.1 |
| Qualification Level | Standard |
Package Options
| Pkg. Type | Pkg. Dimensions (mm) | Lead Count (#) | Pitch (mm) |
|---|---|---|---|
| TSSOP | 5.0 x 4.4 x 0.00 | 16 | 0.7 |
Application Block Diagrams
 | Photovoltaic (PV) Arc Detection System Real-time PV arc detection system minimizes fire risks with fast, accurate fault identification. |
Additional Applications
- Power-line current measurements
- Watt meters
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