AD8362ARU-REEL7 Analog Devices Inc, AD8362ARU-REEL7 Datasheet
AD8362ARU-REEL7
Specifications of AD8362ARU-REEL7
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AD8362ARU-REEL7 Summary of contents
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FEATURES Complete fully calibrated measurement/control system Accurate rms-to-dc conversion from 3.8 GHz Input dynamic range of >65 dB: −52 dBm to +8 dBm in 50 Ω Waveform and modulation independent, such as GSM/CDMA/TDMA Linear-in-decibels output, scaled 50 ...
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AD8362 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 6 ESD Caution.................................................................................. 6 Pin Configuration and Function Descriptions............................. 7 Equivalent Circuits ........................................................................... ...
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SPECIFICATIONS 25° Ω, differential input drive via balun S O Table 1. Parameter Conditions OVERALL FUNCTION Maximum Input Frequency Input Power Range (Differential) dB referred to 50 Ω impedance level, f ...
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AD8362 Parameter Conditions RMS TARGET INTERFACE Pin VTGT Nominal Input Voltage Range Measurement range = 60 dB, to ±1 dB error Input Bias Current VTGT = 1.25 V VTGT = 0 V Incremental Input Resistance POWER-DOWN INTERFACE Pin PWDN Logic ...
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Parameter Conditions 2.7 GHz Dynamic Range Error referred to best-fit line (linear regression) ±1.0 dB linearity, CW input ±0.5 dB linearity, CW input Deviation vs. Temperature Deviation from output at 25°C −40°C < T −40°C < T −40°C < T ...
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AD8362 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VPOS Input Power (Into Input of Device) Equivalent Voltage Internal Power Dissipation θ JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Lead Temperature (Soldering, 60 sec) Stresses above those ...
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PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Description 1, 8 COMM Common Connection. Connect via low impedance to system common. 2 CHPF Input HPF. Connect to common via a capacitor to determine 3 dB ...
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AD8362 EQUIVALENT CIRCUITS VPOS DECL COMM INHI 100Ω VGA 100Ω INLO VPOS COMM DECL Figure 3. Circuit A VPOS ~35kΩ VSET VSET ~35kΩ INTERFACE ACOM COMM Figure 4. Circuit B VPOS 50kΩ VTGT VTGT 50kΩ INTERFACE GAIN = 0.12 ACOM ...
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TYPICAL PERFORMANCE CHARACTERISTICS 4.5 4.0 3.5 3.0 2.5 2.0 2700MHz 1.5 1.0 900MHz 0.5 1900MHz 0 –60 –55 –50 –45 –40 –35 –30 –25 –20 –15 INPUT AMPLITUDE (dBm) Figure 8. Output Voltage (VOUT) vs. Input Amplitude (dBm), Frequencies: 100 ...
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AD8362 3.0 2.5 2.0 1.5 1.0 IS95 REVERSE LINK 0 –0.5 –1.0 W-CDMA 15-CHANNEL –1.5 –2.0 –2.5 –3.0 –60 –55 –50 –45 –40 –35 –30 –25 –20 –15 INPUT AMPLITUDE (dBm) Figure 14. Output Error from CW Linear ...
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INPUT AMPLITUDE (dBm) Figure 20. Logarithmic Law Conformance vs. Input Amplitude, 3 Sigma to ...
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AD8362 52.0 51.5 51.0 50.5 50.0 49.5 49.0 FREQUENCY (MHz) Figure 26. Logarithmic Slope vs. Frequency, Temperatures: −40°C, +25°C, and +85°C –53 –54 –55 –56 –57 –58 –59 –60 –61 –62 –63 FREQUENCY (MHz) Figure 27. Logarithmic Intercept vs. Frequency, ...
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TIME (µs) Figure 32. Output Response to RF Burst Input for Various RF Input Levels, Carrier Frequency 900 ...
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AD8362 5 0 –5 –10 –15 –20 –25 –30 –40 –30 –20 – TEMPERATURE (°C) Figure 38. Change in VREF vs. Temperature, 3 Sigma to Either Side of Mean 300 250 200 150 100 50 ...
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CHARACTERIZATION SETUP EQUIPMENT The general hardware configuration used for most of the AD8362 characterization is shown in Figure 40. The signal source is a Rohde & Schwarz SMIQ03B. A 1:4 balun transformer is used to transform the single-ended RF signal ...
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AD8362 CIRCUIT DESCRIPTION The AD8362 is a fully calibrated, high accuracy, rms-to-dc converter providing a measurement range of over 65 dB capable of operating from signals as low in frequency as a few hertz to at least 3.8 ...
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Because the scaling parameters of the two squarers are accurately matched, it follows that Equation 4 is satisfied only when 2 2 MEAN SIG ATG In a formal solution, extract the square root of ...
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AD8362 An approximate schematic of the signal input section of the AD8362 is shown in Figure 46. The ladder attenuator is com- posed of 11 sections (12 taps), each of which progressively attenuates the input signal by 6.33 dB. Each ...
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OPERATION IN RF MEASUREMENT MODE BASIC CONNECTIONS Basic connections for operating the AD8362 in measurement mode are shown in Figure 47. While the AD8362 requires a single supply of nominally 5 V, its performance is essentially unaffected by variations of ...
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AD8362 An external 100 Ω shunt resistor combines with the internal 100 Ω single-ended input impedance to provide a broadband 50 Ω match. The unused input (in this case, INLO) is ac-coupled to ground. Figure 49 shows the transfer function ...
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CHOOSING A VALUE FOR CHPF The 3.5 GHz VGA of the AD8362 includes an offset cancel- lation loop, which introduces a high-pass filter effect in its transfer function. To properly measure the amplitude of the input signal, the corner frequency ...
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AD8362 ADJUSTING VTGT TO ACCOMMODATE SIGNALS WITH VERY HIGH CREST FACTORS An external direct connection between VREF (1.25 V) and VTGT sets up the internal target voltage, which is the rms voltage that must be provided by the VGA to ...
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Moderately low resistance values should be used to minimize scaling errors due to the 70 kΩ input resistance at the VSET pin. This resistor string also loads the output, and it eventually reduces the load-driving capabilities if very low values ...
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AD8362 TEMPERATURE COMPENSATION AT VARIOUS WiMAX FREQUENCIES UP TO 3.8 GHz The AD8362 is ideally suited for measuring WiMAX type signals because crest factor changes in the modulation scheme have very little affect on the accuracy of the measurement. However, ...
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INPUT AMPLITUDE (dBm) Figure 59. AD8362 VOUT and Error with Linear Temperature Compensation at 2350 MHz 4.0 3.5 3.0 2.5 2.0 1.5 1.0 0.5 ...
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AD8362 OPERATION IN CONTROLLER MODE The AD8362 provides a controller mode feature at the VOUT pin. Using VSET for the setpoint voltage possible for the AD8362 to control subsystems such as power amplifiers (PAs), VGAs, or variable voltage ...
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RMS VOLTMETER WITH 90 dB DYNAMIC RANGE The 65 dB range of the AD8362 can be extended by adding a standalone VGA as a preamplifier whose gain control input is derived directly from VOUT. This extends the dynamic range by ...
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AD8362 AD8362 EVALUATION BOARD The AD8362 evaluation board provides for a number of dif- ferent operating modes and configurations, including many described in this data sheet. The measurement mode is set up by positioning SW2 as shown in Figure 67. ...
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Figure 68. Component Side Metal of Evaluation Board Figure 69. Component Side Silkscreen of Evaluation Board Rev Page AD8362 ...
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... Not installed SW1 Use to reduce VTGT or to externally apply a voltage to VTGT SW2 Measurement mode/controller mode selector SW3 Power-down/power-up or external power-down selector Part Number ETC 1.6-4-2-3 (M/A-COM) AD8362ARU Rev Page Default Value 0.1 μF 100 0.1 μ open 1000 pF 100 pF 1000 pF LK1 = open 0 Ω ...
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... OUTLINE DIMENSIONS ORDERING GUIDE Model Temperature Range AD8362ARU −40°C to +85°C AD8362ARU-REEL −40°C to +85°C AD8362ARU-REEL7 −40°C to +85°C 1 AD8362ARUZ −40°C to +85°C 1 AD8362ARUZ-REEL7 −40°C to +85°C 1 AD8362-EVALZ RoHS Compliant Part. 5.10 5.00 4. 4.50 6.40 4.40 BSC 4 ...
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AD8362 NOTES ©2003–2007 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D02923-0-6/07(D) Rev Page ...