AD8318ACPZ-R2 Analog Devices Inc, AD8318ACPZ-R2 Datasheet
AD8318ACPZ-R2
Specifications of AD8318ACPZ-R2
AD8318ACPZ-R2TR
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AD8318ACPZ-R2 Summary of contents
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FEATURES Wide bandwidth: 1 MHz to 8 GHz High accuracy: ±1.0 dB over 55 dB range (f < 5.8 GHz) Stability over temperature: ±0.5 dB Low noise measurement/controller output (VOUT) Pulse response time: 10 ns/12 ns (fall/rise) Integrated temperature sensor ...
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AD8318 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Typical Performance Characteristics ...
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SPECIFICATIONS 220 pF 25°C, 52.3 Ω termination resistor at INHI, unless otherwise noted. POS LPF A Table 1. Parameter SIGNAL INPUT INTERFACE Specified Frequency Range DC Common-Mode Voltage MEASUREMENT MODE f = ...
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AD8318 Parameter f = 3.6 GHz Input Impedance ±3 dB Dynamic Range ±1 dB Dynamic Range Maximum Input Level Minimum Input Level Slope Intercept Output Voltage—High Power In Output Voltage—Low Power In Temperature Sensitivity f = 5.8 GHz Input Impedance ...
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Parameter VSET INTERFACE Nominal Input Range Logarithmic Scale Factor Bias Current Source TEMPERATURE REFERENCE Output Voltage Temperature Slope Current Source/Sink POWER-DOWN INTERFACE Logic Level to Enable Device ENBL Current When Enabled ENBL Current When Disabled POWER INTERFACE Supply Voltage Quiescent ...
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AD8318 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage: Pin VPSO, Pin VPSI ENBL, V Voltage SET Input Power (Single-Ended, re: 50 Ω) Internal Power Dissipation 1 θ JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1, 2, 11, 12 CMIP Device Common (Input System Ground VPSI Positive Supply Voltage (Input System): 4 5.5 V. Voltage on Pin ...
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AD8318 TYPICAL PERFORMANCE CHARACTERISTICS +25°C, −40°C, +85°C; C POS A +85°C Red. 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 –65 –55 –45 –35 –25 –15 P (dBm) IN Figure 4. ...
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P (dBm) IN Figure 10. Distribution of Error over Temperature After Ambient Normalization vs. Input Amplitude at 900 MHz for at Least 70 ...
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AD8318 j1 j0.5 j0.2 0 0.2 0.5 1 8GHz 5.8GHz –j0.2 3.6GHz –j0.5 START FREQUENCY = 0.1GHz –j1 STOP FREQUENCY = 8GHz Figure 16. Input Impedance vs. Frequency; No Termination Resistor on INHI Ω O 0.07 0.06 ...
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THEORY OF OPERATION The AD8318 is a 9-stage demodulating logarithmic amplifier that provides RF measurement and power amplifier control functions. The design of the AD8318 is similar to the logarithmic detector/controller. However, the AD8318 input frequency range extends to 8 ...
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AD8318 USING THE AD8318 BASIC CONNECTIONS The AD8318 is specified for operation GHz result, low impedance supply pins with adequate isolation between functions are essential. In the AD8318, VPSI and VPSO, the two positive supply ...
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VPSI CURRENT 10pF 10pF 20kΩ 20kΩ INHI 2kΩ INLO gm STAGE Figure 26. Input Interface While the input can be reactively matched, this is typically not necessary. An external 52.3 Ω shunt resistor (connected on the signal side of the ...
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AD8318 Table 5 lists recommended resistors for various frequencies. These resistors provide the best overall temperature drift based on measurements of a diverse population of devices. The relationship between output temperature drift and frequency is nonlinear and is not easily ...
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The maximum output voltage is 2.1 V × X, and cannot exceed 400 mV below the positive supply (2.1 V × X) when X < (V − 400 mV)/(2.1 V) OUT(MAX) POS − 400 mV) ...
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AD8318 Using the equation for the ideal output voltage (see Equation 13 reference, the log conformance error of the measured data can be calculated as Error (dB − V OUT(MEASURED) OUT(IDEAL) Figure 32 includes a plot ...
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V +25°C ERROR +25°C wrt V OUT 2.0 V –40°C ERROR –40°C wrt V OUT V +85°C ERROR +85°C wrt V OUT 1.8 1.6 1.4 1.2 1.0 0.8 0.6 0.4 0.2 –65 –60 –55 –50 –45 –40 –35 –30 ...
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AD8318 PULSED RF INPUT 1nF 1nF Figure 39. AD8318 Operating with the High Speed ADCMP563 Comparator RESPONSE TIME CAPABILITY The AD8318 has rise/fall time capability (10% to 90%) for input power switching between the noise floor and ...
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In many log amp applications, it may be necessary to lower the corner frequency of the postdemodulation filtering to achieve low output ripple while maintaining a rapid response time to changes in signal level. For an example of a 4-pole ...
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AD8318 0 –5 –10 –15 –20 –25 –30 –35 –40 –45 –50 –55 –60 0.6 0.8 1.0 1.2 1.4 V (V) SET Figure 44. AD8367 Output Power vs. AD8318 Setpoint Voltage For the AGC loop to remain locked, the AD8318 ...
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CHARACTERIZATION SETUP AND METHODS The general hardware configuration used for the AD8318 characterization is shown in Figure 47. The primary setup used for characterization is measurement mode. The characterization board is similar to the customer evaluation board with the exception ...
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AD8318 EVALUATION BOARD Table 6. Evaluation Board (Rev. A) Bill of Materials Component Function VP, GND Supply and Ground Connections SW1, R3 Device Enable. When in Position A, the ENBL pin is connected to VP and the AD8318 is in ...
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R2 1kΩ T EMP C1 1nF R1 R 52.3Ω C2 1nF FIN POS NBL R3 SW1 10kΩ Figure 48. Evaluation Board Schematic Figure 49. Component Side Layout V POS R4 C5 499Ω R5 0.1µF 0Ω C6 ...
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... INDICATOR 12° MAX 1.00 0.85 0.80 ORDERING GUIDE Model Temperature Range 1 AD8318ACPZ-REEL7 −40°C to +85°C 1 AD8318ACPZ-R2 −40°C to +85° AD8318ACPZ-WP −40°C to +85°C 1 AD8318-EVALZ RoHS compliant part waffle pack. ©2004-2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...