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FAQ: AD8340, AD8341, and ADL5390 Vector Modulators: IBBP, IBBM, QBBP, and QBBM Input Impedance to Ground
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Documents
'Must Knows' about ADI's family of Hittite PLL+VCO and Clock Timing products
AD8318 Temperature sensor output characteristic
AD8345 Pout vs. Vinbb Transfer Function
AD8361 Output Offset Voltage
AD8361 RMS Responding RF Detector - Overdrive Recovery
AD8363: Using INHI vs. INLO for Wideband Applications
AD8364 Operation at 2.7 GHz
ADC Noise Figure in ADIsimRF
ADF4107: Phase noise
ADF4150, ADF4150HV, and ADF4151 evaluation board control software source code
ADF4150, ADF4151, ADF4150HV, ADF4152HV evaluation boards software
ADF4155 evaluation board control software
ADF4158 and ADF4159 - Glitches when changing frequency
ADF4350 and ADF4351 Common Questions Cheat Sheet
ADF4350 and ADF4351 evaluation board files
ADF4350 S-parameters
ADF4355-2 and ADF5355 Evaluation Board User Guides (Preliminary)
ADF4360-x evaluation boards' control software source code
ADF9010 software
ADL5390 Low-End Input Frequency Limit
ADL5511 Response to a Multi-Carrier Signal
ADL5511 VRMS and VENV Response Time to VPOS Turn-On
ADL5601/2: Replacing Wirewound inductors with multilayer chip inductors
ADL5902 Vout Variation vs. Supply Voltage
Calculating VSWR using dual Linear-in-dB RMS Detecto
Changing the ADF410X output channel without a glitch?
Command line register writer for CyUSB PLL evaluation boards
connecting output of AD9854 DDS to ADL5375-05 modulator
Digital Lock Detect output from the ADF4106 is not indicating lock correctly, why?
Explain how the ADF41XX datasheet PLL noise is specified?
FAQ on Hittite Microwave RF/MW Amplifiers from ADI
FAQ: 1/f Noise for the ADL5387, ADL5382, and ADL5380
FAQ: AD8302 Gain and Phase with no Input Signal
FAQ: AD8302 Gain/Phase Detector, Response to Modulated Signals
FAQ: AD8302 Gain/Phase Detector: Operation as a Frequency Discriminator
FAQ: AD8309 Limiter impedance
FAQ: AD8309 Limiter output swing
FAQ: AD8340, AD8341, and ADL5390 Vector Modulators: IBBP, IBBM, QBBP, and QBBM Input Impedance to Ground
FAQ: AD8348 and ADL5387 maintains performance at low frequencies
FAQ: AD8362 RMS Detector: Equations for RMS Averaging Capacitor and Corner Frequency of Offset Control Loop
FAQ: AD8370 dc coupled with dual supplies
FAQ: ADF4153 DLD ( Digital Lock Detect )
FAQ: ADL5380 Performance below 400 MHz.
FAQ: ADL5511 No Connect (NC) Pins
FAQ: ADL5801 Low Frequency Operation
FAQ: ADL5801 Mixer Performance when driven single-ended on both its RF and LO ports
FAQ: ADL5802 Low Frequency Operation
FAQ: ADL5902 Part-to-Part Supply Current Variation
FAQ: ADL5902 RMS Detector Output Voltage Clamping for High Input Power Levels
FAQ: ADL5902 RMS Detector: Operation at Frequencies greater than 5.8 GHz
FAQ: AGC Response Time of AD8368 VGA
FAQ: Alternatives to AD8362 High Range RF RMS Detector
FAQ: Are S-parameter files available for ADI's RF/IF gain blocks?
FAQ: Baseband Bandwidth of ADL5375 Broadband IQ Modulator
FAQ: Calculating the Output Power of DAC/IQ Modulator Combination
FAQ: Calculating the Resistor Values to Alter the Slope of a RF Log Amp or RMS Detector
FAQ: Can AD8346 be operated at frequencies below 800 MHz?
FAQ: Can HMC589 be operated below 4V?
FAQ: Can the AD8362 Logarithmic RMS Detector accurately WiMax and LTE?
FAQ: Determining the Correct Value for Decoupling(Bypass) and AC-Coupling Capacitors
FAQ: Disabling the AD608's Mixer/Amplifier and operating just the Log Amp/Limiter
FAQ: Extending the VCO tuning range of the ADF4193 ultra fast settling PLL
FAQ: Getting New Devices into ADIsimRF
FAQ: HMC Microwave Frequency Dividers by Analog Devices
FAQ: HMC Phase Frequency Detectors
FAQ: How can I avoid startup transients when operating the AD8318 in Controller Mode?
FAQ: How can I get the rms detector to accurately detect the power during a pulse modulated signal input?
FAQ: How does a serial gain setting get latched into the AD8366?
FAQ: How Does the Drain Current of HMC634LC4 change as the Gate Voltage approaches 0V?
FAQ: Is it Possible to reduce the gain of the ADL5602?
FAQ: Is there a Performance Benefit Associated with Driving the ADL5375 Local Oscillator Input Differentially?
FAQ: Long Term Drift of RF Detectors
FAQ: Low Frequency Operating Limit for AD8370 Digitally Controlled VGA
FAQ: Maximum Junction Temperature of AD831
FAQ: Measuring the Compression Point (OP1dB) of IQ Modulators
FAQ: OP-AMP choice for active PLL loop filters
FAQ: Operating RMS Detectors at Low Frequencies
FAQ: Operating the AD8362 Evaluation Board at Low Frequencies
FAQ: Operating the AD8364 dual RMS Detector at frequencies below 450 MHz
FAQ: Operation of AD8375 and AD8376 Digitally Controlled VGAs at Low Frequency
FAQ: PLL Normalized phase noise floor and 1/f phase noise
FAQ: Reducing the Response Time of an RMS Detector
FAQ: RF Connectors used on ADI Evaluation Boards
FAQ: RF Detector Recommendations
FAQ: S-Parameters
FAQ: The ADL5240_ADL5243 DSA control interface voltage thresholds and Byte(8 bits) opeation
FAQ: The Ultimate Guide to the ADF5355 Microwave Wideband Synthesizer
FAQ: Thermal Resistance of LFCSP packages used in ADL5370/1/2/3/4/5 Modulators
FAQ: Typo Error at ADL5373/4/5 datasheet
FAQ: Understanding ADL5380 IQ Demodulator EVM Performance Plots
FAQ: Using Standard S-Parameter Files In Eagleware(Genesys)
FAQ: We have several AD8361s and all exhibit different levels of output voltage with no RF signal present. Is this normal?
FAQ: What are the precautions to prevent latch-up on the AD8375?
FAQ: What is the AGC loop settling time of the AD8347 for a pulsed RF input?
FAQ: What is the Channel To Channel Isolation of the ADRF6520.
FAQ: What is the insertion phase change of the ADL5330 as the gain control voltage is varied?
FAQ: What is the low frequency operating limit for ADL5385 and ADL5386?
FAQ: When I adjust the dc bias level on the I and Q inputs of my IQ Modulator, I see no change in the LO Leakage. What am I doing wrong?
FAQ: When I use the Auxiliary DACs to compensate for IQ Mod LO Leakage, what resistor tolerance should I use?
FAQ: Why do you typically recommend using a 10uF series capacitor at the baseband output of an IQ demodulator?
FAQ: Why use a PLL architecture that supports High Voltage VCOs?
FAQ: How should I terminate the RFoutA and RFoutB pins on the ADF4350?
FAQ: I cannot load the ADF7021-N .txt file generated by SRD Design Studio into the evaluation tool.
Frequency Hopping with Hittite PLLVCO's
Gerber files for the HMC778LP6CE evaluation board
HMC-ABH241 : Die Related- Queries
HMC1020 SCI1-4 Configurations
HMC292A HMC292 Additional Data
HMC451 pHEMT process
HMC557A additional data
HMC558A addtional data
HMC5xxx
HMC685LP4 Additional Data
HMC686LP4/686LP4E Addtional Data
HMC773ALC3B additional data
HMC832LP6GE vs HMC830LP6GE comparison
How Can I View Gerber files?
How do I obtain a footprint for ADI components?
How do I use the SPI Mode Selection feature on HMC PLL's & PLLVCO's?
Int-N PLL evaluation boards' control software source code
Looking for a High Range RF RMS Detector that will Operate at Low Input Frequencies
LTC694x Loop Filter Design and Simuation
On the HMC611LP4, how does the temperature sensor pin (Pin 3) work?
Opening the .pcb file in the Gerber folder of HMC624ALP4E
Operating the ADL5535/6 with a lower value of choke inductor
Phase detector of the HMC807LP6CE does not work - 3
Phase resync, phase programmability and phase coherence between multiple Fractional-N PLLs
PLL USB adapter board not connecting/programming
Problem Installing ADIsimRF Rev. 1.7
Pulse Response of Linear-in-dB RMS Detectors with no RMS Averaging Capacitor Present
Q: What happens to the PLL when the REFIN is removed ?.
Question about HMC406MS8G
Re: ADL5380 DSB NF Measurement
Replacing ADF4001 with ADF4002
RF & Microwave INTRO
RF Detector Flatness vs. Frequency
RF Detector Overdrive
S-Parameters for ADL5511 RF Input
S-Paramters for a RMS-responding RF Detectors
Solution: Mixer output noise with ADL5802 Demo Board - varying Supply Current
Switching an RF Detector between Measurement Mode and Controller Mode
Temperature Drift of IQ Modulator LO Leakage after Calibration at 25 degC
The ADL5336 has a low frequency oscillation. How do I fix this?
Threshold voltage to disable the ADL5801/2
Video: Using ADIsimPLL to simulate frequency ramps on the ADF4158
What is the Group Delay of the AD8340 and AD8341? How does is change over gain?
What is the recommended Write Sequence for the ADF41XX after power-on?;
What is the tuning port capacitance and modulation bandwidth for the HMC587LC4B?
FAQ: AD8340, AD8341, and ADL5390 Vector Modulators: IBBP, IBBM, QBBP, and QBBM Input Impedance to Ground
Q.
What is the input impedance to ground for the I and Q inputs of the AD8340, AD8341 and ADL5390 vector Modulators?
A.
These inputs connect to the bases of transistors. So the input impedance will be high and will consist of a resistive and capacitive component. Simulations show an impedance of about 23 megaohms in parallel with approximately 400 fF of capacitance from each input to ground.
Attachments:
AD8340_zin.emf
ad8341
adl5390
and
ad8340
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