LTC5587 Datasheet | Linear Technology

Data Sheet.in LTC5587 6 GHz RMS Power Detector with Digital Output Features n n n n n n n n n n n n DESCRIPTION The LTC®5587 is a 10MHz to 6GHz, low power monolithic precision RMS power detector with an integrated 12-bit serial analog-to-digital converter (ADC). The RMS detector uses a proprietary technique to accurately measure the RF power of modulated signals with crest-factor as high as 12d B. For an input frequency of 2.14GHz the detection range is from - 34d Bm to 6d Bm. The serial digital output of the detector is a 12-bit word value that is directly proportional to the RF signal power measured in d Bm. The LTC5587 is suitable for precision power measurement for a wide variety of RF standards, including LTE, Wi MAX, W-CDMA, TD-SCDMA, CDMA, CDMA2000, EDGE, GSM, etc. The DC output of the detector is connected in series with an on-chip 300Ω resistor to the analog output pin (VOUT). This enables further filtering of the output modulation ripple using an off-chip capacitor before analog-todigital conversion. The ADC Features include no data latency, no missing codes, and a sampling rate of up to 500ksps. A dedicated external reference pin (VREF) can be tied to VDD or other suitable low-impedance voltage reference to set the ADC full-scale input voltage range. The ADC also Features an automatic power down after each conversion making the LTC5587 ideal for low-power applications. L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear Technology Corporation. All other trademarks are the property of their respective owners. Frequency Range: 10MHz to 6GHz Accurate Power Measurement of High Crest Factor (Up to 12d B) Waveforms 40d B Log Linear Dynamic Range Exceptional Accuracy Over Temperature Single-Ended RF Input 0.014d B/Bit (12-Bit) ADC Resolution (VREF = 1.8V) ADC Sample Rate Up to 500ksps SPI/MICROWIRE Serial I/O patible with 1V to 3.6V Digital Logic Fast Response Time: 1μs Rise, 8μs Fall Low Power: 3m A at 3.3V and 500ksps Small...