LTC1968 is a precision wide bandwidth RMS-to-DC converter with features such as high linearity, wide input bandwidth, and simple system calibration.
The LTC1968 RMS‑to‑DC converter provides high linearity and a wide input bandwidth, supporting single‑ended or differential signals with a rail‑to‑rail common‑mode range. It operates from a single 4.5 V to 5.5 V supply and offers a shutdown current as low as 0.1 pA for power‑saving applications.
Typical applications include true‑RMS digital multimeters, panel meters, and AC + DC measurement systems. The device is supplied in an 8‑lead MSOP package and includes a flexible output pin for level shifting.
| Supply Voltage Range | 4.5 V to 5.5 V |
|---|---|
| Shutdown Current | 0.1 pA |
| Differential Input Range | ±1 V |
| Input Impedance (Differential) | 1.2 MΩ |
| Output Impedance | 10 kΩ to 12.5 kΩ |
It operates from a single supply voltage between 4.5 V and 5.5 V.
The shutdown current can be as low as 0.1 pA.
The common‑mode input range is rail‑to‑rail, and the differential input range is ±1 V.