Datasheet HMC1120LP4E (Analog Devices) - 19

HMC1120LP4E
v00.0814
RMS POWER DETECTOR & ENVELOPE TRACKER, DC - 3.9 GHz 1.2 Configuration For The Typical Application
T The HMC1120LP4E is a logarithmic RMS detector that can be directly driven with a single-ended 50-Ohm M RF source. The integrated broadband single-ended input interface of HMC1120LP4E eliminates the requirement for an external balun transformer or matching network. The HMC1120LP4E can be operated S from DC to 3.9 GHz by using only standard DC blocking capacitors. This simple input interface provides - cost and PCB area reductions and increases measurement repeatability. RS The RMS output signal is typical y connected to VSET through a resistive network providing a Pin -> O RMSOUT transfer characteristic slope of 35 mV/dBm ( at 900 MHz). However the RMS output can be T re-scaled to “magnify” a specific portion of the input sensing range, and to ful y utilize the dynamic range C of the RMS output. Refer to the section under the “Log-Slope and Intercept” section for details. E T Due to part-to-part variations in log-slope and log-intercept, a system-level calibration is recommended to E satisfy absolute accuracy requirements; refer to the “System Calibration” section for more details. D R
1.3 Broadband Single-Ended input interface
E W O The HMC1120LP4E operates with a single-ended input inter-face and requires only two external DC P blocking capacitors and an external 50Ohm resistor. The HMC1120LP4E input interface shown below provides a compact, broadband solution. Note that the provided single-ended input interface covers the whole operating spectrum of the HMC1120LP4Eand does not require matching/tuning for different frequencies. The performance of the HMC1120LP4E at different frequencies is shown below: 3 3 2.5 2 2 1 ERROR (dB) 1.5 0 RMSOUT (V) 1 -1 0.5 -2 0 -3 -70 -60 -50 -40 -30 -20 -10 0 10 INPUT POWER (dBm) 100MHz 2700MHz 900MHz 3500MHz 1900MHz 3900MHz 2200MHz Figure 1.RMSOUT & Error vs. Pin For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824 Phone: 978-250-3343 Fax: 978-250-3373 Order On-line at www.hittite.com
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Application Support: Phone: 978-250-3343 or apps@hittite.com Document Outline Typical Applications Features Functional Diagram General Description Typical Performance Characteristics Electrical Specifications RMSOUT Error vs. Pin with Different Modulations @ 1900 MHz RMSOUT & Error vs. Pin @ 500 MHz RMSOUT & Error vs. Pin @ 900 MHz RMSOUT & Error vs. Pin @ 1900 MHz RMSOUT & Error vs. Pin @ 2200 MHz RMSOUT & Error vs. Pin @ 2700 MHz RMSOUT & Error vs. Pin @ 3500 MHz RMSOUT Intercept vs. Frequency RMSOUT Slope vs. Frequency RMSOUT vs. Pin with WCDMA 4 Carrier @ +25 °C RMSOUT Error vs. Pin with WCDMA 4 Carrier @ +25 °C RMSOUT Error vs. Pin with WCDMA 4 Carrier @ +85 °C wrt +25 °C Response RMSOUT vs. Pin with CW @ +25 °C RMSOUT Error vs. Pin with CW @ +25 °C RMSOUT vs. Pin w/ CW & WCDMA 4 Carrier @ 1900 MHz & +25 °C Reading Error for WCDMA 4 Carrier wrt CW Response @ +25 °C RMSOUT vs. Pin w/ CW & WCDMA 4 Carrier @ 1900 MHz & +85 °C Reading Error for WCDMA 4 Carrier wrt CW Response @ +85 °C RMSOUT vs. Pin w/ CW & WCDMA 4 Carrier @ 1900 MHz & -40 °C Reading Error for WCDMA 4 Carrier wrt CW Response @ -40 °C RMSOUT Output Response with SCI = 0000 @ 1900 MHz RMSOUT Output Response with SCI = 1100 @ 1900 MHz Typical Supply Current vs. Pin, Vcc = 3.3V Input Return Loss vs. Frequency Output Ripple & Rise/Fall Time vs. Integration Setting [Sci4,Sci3,Sci2,Sci1] in Decimal ETOUT vs. Vin with CW @ 900 MHz ETOUT & ETOUT Error vs. Pin with CW @ 900 MHz ETOUT vs. Vin with CW @ 1900 MHz ETOUT & ETOUT Error vs. Pin with CW @ 1900 MHz ETOUT vs. Pin with CW @ 2200 MHz ETOUT & ETOUT Error vs. Pin with CW @ 2200 MHz ETOUT vs. Pin with CW @ 2700 MHz ETOUT & ETOUT Error vs. Pin with CW @ 2700 MHz ETOUT vs. Pin with CW @ 3500 MHz ETOUT & ETOUT Error vs. Pin with CW @ 3500 MHz ETOUT & ETOUT Error vs. Pin with CW @ 3900 MHz ETOUT vs. Pin with CW @ 3900 MHz ETOUT Intercept vs. Frequency with CW ETOUT Slope vs. Frequency with CW Absolute Maximum Ratings Outline Drawing Package Information Pin Descriptions Evaluation PCB Evaluation Order Information List of Materials for Evaluation PCB Application Circuit Application Information Principle of Operation Configuration For The Typical Application Broadband Single-Ended Input Interface Envelope Detector Output RMS Output Interface and Transient Response LOG-Slope and Intercept DC Offset Compensation Loop Standby Mode Modulation Performance - Crest factor performance System Calibration Layout Considerations Definitions