AD8315ARM-REEL7 Analog Devices, AD8315ARM-REEL7 Datasheet
AD8315ARM-REEL7
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AD8315ARM-REEL7 Summary of contents
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... Rev. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. ...
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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 ...