| Frequency (Min) (MHz) | 50 |
| Frequency (Max) (MHz) | 8000 |
| Type | RMS |
| Supply voltage (Min) (V) | 2.7 |
| Supply voltage (Max) (V) | 5 |
| Supply current (mA) | 4.8 |
| Number of channels (#) | 1 |
| Dynamic range (Typ) (dB) | 45 |
| | |
- Wide Supply Range from 2.7 V to 5 V
- Logarithmic Root Mean Square Response
- 45-dB Linear-in-dB Power Detection Range
- Multi-Band Operation from 50 MHz to 8 GHz
- LOG Conformance Better than ±0.5 dB
- Highly Temperature Insensitive, ±0.25 dB
- Modulation Independent Response, 0.08 dB
- Minimal Slope and Intercept Variation
- Shutdown Functionality
- Tiny 6-Bump DSBGA Package
The LMH2110 is a 45-dB Logarithmic RMS power detector particularly suited for accurate power measurement of modulated RF signals that exhibit large peak-to-average ratios; that is, large variations of the signal envelope. Such signals are encountered in W-CDMA and LTE cell phones. The RMS measurement topology inherently ensures a modulation insensitive measurement.
The device has an RF frequency range from 50 MHz to 8 GHz. It provides an accurate, temperature and supply insensitive output voltage that relates linearly to the RF input power in dBm. The LMH2110 device has excellent conformance to a logarithmic response, enabling easy integration by using slope and intercept only, reducing calibration effort significantly. The device operates with a single supply from 2.7 V to 5 V. The LMH2110 has an RF power detection range from –40 dBm to 5 dBm and is ideally suited for use in combination with a directional coupler. Alternatively, a resistive divider can be used.
The device is active for EN = High; otherwise, it is in a low power-consumption shutdown mode. To save power and prevent discharge of an external filter capacitance, the output (OUT) is high-impedance during shutdown.