Overview
The LMH2110TMX/NOPB, produced by Texas Instruments, is a 45-dB Logarithmic RMS power detector designed for accurate power measurement of modulated RF signals. It is particularly suited for signals with large peak-to-average ratios, commonly encountered in W-CDMA and LTE cell phones. The device operates over a wide frequency range from 50 MHz to 8 GHz and provides a temperature and supply insensitive output voltage that relates linearly to the RF input power in dBm. Its RMS measurement topology ensures modulation insensitive measurements, making it ideal for various RF power control applications.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| RF Frequency Range | 50 MHz to 8 GHz | |
| Supply Voltage | 2.7 V to 5 V | V |
| RF Power Detection Range | –40 dBm to 5 dBm | dBm |
| LOG Conformance Error | Better than ±0.5 dB | dB |
| Temperature Insensitivity | ±0.25 dB | dB |
| Modulation Independent Response | 0.08 dB | dB |
| Package Type | DSBGA (YFQ) with 6 pins | |
| Operating Temperature Range | –40°C to 85°C | °C |
| Shutdown Current | Typically 5.7 μA at VBAT = 4.5 V | μA |
| Active Current | Typically 4.8 mA at VBAT = 4.5 V | mA |
Key Features
- 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
Applications
The LMH2110TMX/NOPB is ideally suited for various RF power control applications, including:
- Multi-Mode, Multi-Band RF Power Control in GSM/EDGE, CDMA/CDMA2000, W-CDMA, and LTE systems
- Infrastructure RF Power Control
- Use in combination with a directional coupler or a resistive divider
Q & A
- What is the RF frequency range of the LMH2110TMX/NOPB?
The RF frequency range is from 50 MHz to 8 GHz. - What is the supply voltage range for the LMH2110TMX/NOPB?
The supply voltage range is from 2.7 V to 5 V. - What is the RF power detection range of the LMH2110TMX/NOPB?
The RF power detection range is from –40 dBm to 5 dBm. - How accurate is the LOG conformance of the LMH2110TMX/NOPB?
The LOG conformance error is better than ±0.5 dB. - Is the LMH2110TMX/NOPB temperature insensitive?
Yes, it is highly temperature insensitive with an error of ±0.25 dB. - Does the LMH2110TMX/NOPB have a shutdown mode?
Yes, it has a low power-consumption shutdown mode when EN = Low. - What is the package type of the LMH2110TMX/NOPB?
The package type is DSBGA (YFQ) with 6 pins. - What are the typical operating currents for the LMH2110TMX/NOPB?
The typical active current is 4.8 mA at VBAT = 4.5 V, and the typical shutdown current is 5.7 μA at VBAT = 4.5 V. - What are some common applications of the LMH2110TMX/NOPB?
It is used in multi-mode, multi-band RF power control in various cellular systems and infrastructure RF power control. - How does the LMH2110TMX/NOPB handle modulation?
The device has a modulation independent response with an error of 0.08 dB.
