The LTC has remarkable temperature-dependent characteristics. From -40 to +85 °C, the component offers a dynamic range of 48 dB with a linearity of +/-1 dB. This allows the LTC5582 to be used in harsh environments such as remote radio units or outdoor units deployed on cell towers with minimal calibration adjustments. Furthermore, the component incorporates first- and second-order temperature compensation capabilities that can be easily calibrated for improved temperature performance.
Maintaining a truly constant slope across an operating range of 450 MHz to 2.7 GHz,
the LTC5582 features a log-linear response that accurately converts RF signal levels, in dB, into a proportional linear DC voltage. Operating in the wireless network frequency range of 450 MHz to 2.7 GHz, the detector's response maintains the most constant slope of any competing product in the industry when the signal frequency varies. This allows a single detector to operate in multi-band environments with minimal calibration adjustments. Furthermore, the LTC5582 boasts fast data acquisition characteristics; it can accurately acquire an upstream signal in 500 ns and a downstream signal in 4.5 µs. This fast response is convenient for a wide range of signal envelope monitoring applications.
Unipolar RF Input:
The LTC5582 specifications support a unipolar RF input for unipolar input applications without the need for an external symmetrical transformer. This RF input provides a practical interface and allows for cost savings in the implementation of a high-performance RF measurement circuit.
Minimal Power Consumption:
The LTC5582 operates from a single 3.3V supply, drawing only 42mA, thus reducing power consumption. The component includes an Enable pin, allowing the chip to be put into standby mode. In standby mode, the component consumes less than 10µA. The LTC5582 is housed in a small, 10-pin DFN package measuring 2mm x 3mm. Typical application circuits using this component require fewer external components, resulting in a compact, small-scale design.
Summary of features
- Operating frequency range:
40 MHz to 10 GHz.
- Log-linear dynamic range (modulated signals): at 880 MHz, 59 dB; at
2.14 GHz, 57 dB; at 5.8 GHz, 49 dB.
- Precise RF measurement range: -56 dBm to 1 dBm.
- Temperature-dependent accuracy (-40 to +85 °C): +/- 1 dB.
- Precise frequency response: 700 MHz to 2.7 GHz.
- Single-pole RF input: no external transformer.
- Fast response: 500 ns rise time and
4 µs fall time.
