AD8315ARM-REEL Analog Devices Inc, AD8315ARM-REEL Datasheet
AD8315ARM-REEL
Specifications of AD8315ARM-REEL
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AD8315ARM-REEL Summary of contents
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FEATURES Complete RF detector/controller function >50 dB range at 0.9 GHz (−49 dBm to +2 dBm Ω) Accurate scaling from 0.1 GHz to 2.5 GHz Temperature-stable linear-in-dB response Log slope of 23 mV/dB, intercept at −60 dBm at ...
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AD8315 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 ESD Caution.................................................................................. 5 Pin Configuration and Function Descriptions............................. 6 Typical Performance Characteristics ...
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SPECIFICATIONS 25°C, 52.3 Ω termination on RFIN, unless otherwise noted. S Table 1. Parameter Conditions OVERALL FUNCTION 1 Frequency Range To meet all specifications Input Voltage Range ±1 dB log conformance, 0.1 GHz Equivalent ...
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AD8315 Parameter Conditions POWER INTERFACE Pin VPOS Supply Voltage Quiescent Current ENBL high Over Temperature −30°C ≤ T Disable Current 6 ENBL low Over Temperature −30°C ≤ Operation down to 0.02 GHz is possible. 2 Mean and standard ...
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ABSOLUTE MAXIMUM RATINGS Table 3. Parameter Supply Voltage VPOS Temporary Overvoltage VPOS (100 cycles, 2 sec duration, ENBL Low) VAPC, VSET, ENBL RFIN Equivalent Voltage Internal Power Dissipation θ (MSOP) JA θ (LFCSP, Paddle Soldered) JA θ (LFCSP, Paddle Not ...
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AD8315 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 4. Pin Function Descriptions Pin No. Mnemonic Description 1 RFIN RF Input. 2 ENBL Connect to VPOS for Normal Operation Connect Pin to Ground for Disable Mode. 3 VSET Setpoint Input. Nominal input ...
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TYPICAL PERFORMANCE CHARACTERISTICS 10 0 –10 –20 0.1GHz –30 –40 0.9GHz 2.5GHz –50 –60 1.9GHz –70 –80 0.2 0.4 0.6 0.8 1.0 V (V) SET Figure 3. Input Amplitude vs (+3dBm) –10 +85°C –30°C –20 –30 +25°C ...
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AD8315 4 –30° –1 +85°C –2 ERROR AT +85°C AND –30°C –3 BASED ON DEVIATION FROM SLOPE AND INTERCEPT AT +25°C –4 –80 –70 –60 –50 –40 RF INPUT AMPLITUDE (dBV) (–47dBm) Figure 9. Distribution of ...
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FREQUENCY (GHz) Figure 15. Slope vs. Frequency; −30°C, +25°C, and +85°C 24 0.1GHz 0.9GHz 23 1.9GHz 22 2.5GHz 21 2.5 3.0 3.5 4.0 4.5 V (V) S ...
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AD8315 3.5 3.3 0mA 3.1 2.9 6mA 2.7 2.5 2.3 2.7 2.8 2.9 3.0 3.1 SUPPLY VOLTAGE (V) Figure 21. Maximum V Voltage vs. Supply Voltage by Load Current APC AVERAGE = 16 SAMPLES 200mV PER VERTICAL DIVISION V APC ...
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AVERAGE = 16 SAMPLES 200mV PER V VERTICAL APC DIVISION GND 1V PER VERTICAL V S DIVISION AND V ENBL GND Figure 27. Power-On and Power-Off Response with VSET Grounded 10MHz REF R AND S EXT TRIG OUTPUT SMT03 SIGNAL ...
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AD8315 THEORY OF OPERATION The AD8315 is a wideband logarithmic amplifier (log amp) similar in design to the AD8313 and AD8314. However strictly optimized for use in power control applications rather than as a measurement device. Figure 31 ...
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The intercept need not correspond to a physically realizable part of the signal range for the log amp. Therefore, the specified intercept is −70 dBV, at 0.1 GHz, whereas the smallest input for accurate measurement ( error, see ...
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AD8315 First, the summed detector currents are written as a function of the input log ( DET SLP where the partially filtered demodulated signal, whose DET exact average ...
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Example Assume that the gain magnitude of the power amplifier runs from a minimum value of ×0.316 (−10 dB (40 dB 2.5 V. Applying Equation 9, G APC Using a coupling ...
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AD8315 –7 0 0.5 1.0 1 (V) APC Figure 35. Typical Power-Control Curve A NOTE ABOUT POWER EQUIVALENCY In using the AD8315, it must be understood that log amps do ...
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In a power control loop, the AD8315 provides both the detector and controller functions. A sample of the power amplifier’s (PA) output power is coupled to the RF input of the AD8315, usually via a directional coupler. In dual-mode applications, ...
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AD8315 TO ANTENNA 8-BIT RAMP DAC 0V TO 2.55V 1 R2, R3 OPTIONAL, SEE TEXT MOBILE HANDSET POWER CONTROL EXAMPLE Figure 38 shows a complete power amplifier control circuit for a dual-mode handset. The PF08107B (Hitachi), a dual mode (GSM, ...
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PA output power is low and the slope of the PA’s power control function is the steepest. A smaller filter capacitor can ...
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AD8315 ANTENNA AD8315 C C RFIN STRIPLINE R ATTN Figure 42. Series Attention Input Coupling Option Figure 42 shows a third method for coupling the input signal into the AD8315. A series resistor, connected to the RF ...
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Figure 44. Layout of Component Side (MSOP) EVALUATION BOARD REV A PWUP AD8315 GND A VAPC TP2 SW1 VPOS J2 TP1 RFIN PWDN LK1 LK2 ...
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AD8315 OUTLINE DIMENSIONS PIN 1 INDICATOR 1.00 0.85 0.80 SEATING 3.20 3.00 2.80 5. 3.20 4.90 3.00 4.65 2. PIN 1 0.65 BSC 0.95 0.85 1.10 MAX 0.75 0.15 0.38 0.23 0.00 0.22 0.08 COPLANARITY SEATING ...
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... ORDERING GUIDE Model Temperature Range AD8315ARM −30°C to +85°C AD8315ARM-REEL −30°C to +85°C AD8315ARM-REEL7 −30°C to +85°C 1 AD8315ARMZ −30°C to +85°C 1 AD8315ARMZ-RL −30°C to +85°C AD8315-EVAL AD8315ACP-REEL −30°C to +85°C AD8315ACP-REEL7 −30°C to +85°C ...
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AD8315 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C01520-0-6/06(C) Rev Page ...