ADL5370 Analog Devices, Inc., ADL5370 Datasheet
ADL5370
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ADL5370 Summary of contents
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... Its excellent phase accuracy and amplitude balance enable high performance intermediate frequency or direct radio frequency modulation for communication systems. The ADL5370 provides a greater than 500 MHz baseband bandwidth, making it ideally suited for use in broadband zero IF or low IF-to-RF applications and in broadband digital predistortion transmitters ...
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... ADL5370 TABLE OF CONTENTS Features .............................................................................................. 1 Applications....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 4 ESD Caution.................................................................................. 4 Pin Configuration and Function Descriptions............................. 5 Theory of Operation ...................................................................... 10 Circuit Description..................................................................... 10 Basic Connections .......................................................................... 11 Optimization ............................................................................... 12 REVISION HISTORY 10/06—Revision 0: Initial Version Applications Information .............................................................. 13 DAC Modulator Interfacing ..................................................... 13 Limiting the AC Swing .............................................................. 13 Filtering ...
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... LO BB OUT = 4.5 MHz −2 dBm per tone BB OUT = 4.5 MHz −2 dBm per tone BB OUT = 6 dBm dBm OUT LO for a plot of return loss vs. frequency Rev Page ADL5370 Min Typ Max Unit 300 MHz 1000 MHz 6.2 dBm 11 dBm −50 dBm −41 dBc ...
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... ADL5370 ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage VPOS IBBP, IBBN, QBBP, QBBN LOIP and LOIN Internal Power Dissipation θ (Exposed Paddle Soldered Down) JA Maximum Junction Temperature Operating Temperature Range Storage Temperature Range Stresses above those listed under Absolute Maximum Ratings Rating may cause permanent damage to the device ...
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... Device Output. Single-ended, 50 Ω internally biased RF output. Pin must be ac-coupled to the load. Exposed Paddle Connect to ground plane via a low impedance path. COM1 1 18 VPS5 ADL5370 COM1 2 17 VPS4 VPS1 3 16 VPS3 TOP VIEW VPS1 4 15 VPS2 (Not to Scale) VPS1 5 14 VPS2 VPS1 6 13 VOUT Figure 2. Pin Configuration Rev Page ADL5370 ). To ensure S ...
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... ADL5370 TYPICAL PERFORMANCE CHARACTERISTICS 25° dBm single-ended; baseband I/Q amplitude = 1.4 V p-p differential sine waves in quadrature with a 500 bias; baseband I/Q frequency ( MHz, unless otherwise noted +85° 250 450 650 850 LO FREQUENCY (MHz) Figure 3 ...
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... SSB OUTPUT POWER –30 THIRD ORDER (dBc) –40 CARRIER FEEDTHROUGH –50 (dBm) SUPPRESSION (dBc) –60 SECOND ORDER (dBc) –70 –80 0.2 0.6 1.0 1.4 1.8 2.2 2.6 BASEBAND INPUT VOLTAGE (V p-p) vs. Baseband Differential Input Level OUT (f = 450 MHz) LO ADL5370 1250 1450 1250 1450 SIDEBAND –5 –10 –15 3.0 3.4 ...
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... ADL5370 –20 THIRD ORDER (dBc) –30 SSB OUTPUT POWER –40 –50 SUPPRESSION (dBc) –60 –70 –80 0.2 0.6 1.0 1.4 1.8 2.2 BASEBAND INPUT VOLTAGE (V p-p) Figure 15. Second- and Third-Order Distortion, Carrier Feedthrough, Sideband Suppression, and SSB P vs. Baseband Differential Input Level OUT (f = 900 MHz) LO –20 –30 THIRD – ...
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... Figure 23. 20 MHz Offset Noise Floor Distribution 900 MHz Rev Page 450MHz NOISE (dBm/Hz) AT 20MHz OFFSET (I/Q Amplitude = 0 mV p-p with 500 mV dc bias) ADL5370 = 450 MHz LO ...
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... ADL5370 THEORY OF OPERATION CIRCUIT DESCRIPTION Overview The ADL5370 can be divided into five circuit blocks: the local oscillator (LO) interface, the baseband voltage-to-current(V-to-I) converter, the mixers, the differential-to-single-ended (D-to-S) amplifier, and the bias circuit. A detailed block diagram of the device is shown in Figure 24. ...
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... The nominal dc bias of 500 mV C16 0.1µF allows for the largest ac swing, limited on the bottom end by the ADL5370 input range and on the top end by the output compliance C15 range on most digital-to-analog converters (DAC) from Analog 0.1µF VPS5 Devices ...
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... In a real modulator, those two quantities are nonzero; and, when mixed with the LO, they result in a finite amount of carrier feedthrough. The ADL5370 is designed to provide a minimal amount of carrier feedthrough. Should even lower carrier feedthrough levels be required, minor adjustments can be made to the (V and (V − ...
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... The AD9779 output currents have a swing that ranges from mA. With the 50 Ω resistors in place, the ac voltage swing going into the ADL5370 baseband inputs ranges from full-scale sine wave out of the AD9779 can be described p-p single-ended ( p-p differential) sine wave with a 500 mV dc bias ...
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... Figure 33. DAC Modulator Interface with Auxiliary DAC Resistors GSM OPERATION ADL5370 19 Figure 34 shows the GSM EVM and spectral mask performance IBBP vs. output power for the ADL5370 at 450 MHz. For a given LO RSLI 100Ω amplitude, the performance is independent of output power. 20 IBBN 23 ...
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... One is chosen, depending on the local oscillator frequency required. While the use of the integrated synthesizer may come at the expense of slightly degraded noise performance from the ADL5370, it can be a cheaper alternative to a separate PLL and VCO solution. Table 5 shows the options available. ...
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... ADL5370 EVALUATION BOARD Populated RoHS-compliant evaluation boards are available for evaluation of the ADL5370. The ADL5370 package has an exposed paddle on the underside. This exposed paddle must be soldered to the board (see the Power Supply and Grounding discussion in the Basic Connections section). The evaluation ...
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... The primary setup used to characterize the ADL5370 is shown in Figure 38. This setup was used to evaluate the product as a single-sideband modulator. The Aeroflex signal generator supplied the local oscillator (LO) and differential I and Q baseband signals to the device under test, DUT. The typical LO drive was 0 dBm ...
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... Figure 39. Setup for Baseband Frequency Sweep and Undesired Sideband Nulling The setup used to evaluate baseband frequency sweep and undesired sideband nulling of the ADL5370 is shown in Figure 39. The interface board has circuitry that converts the single-ended I and Q inputs from the arbitrary function generator to differ- ential I and Q baseband signals with a dc bias of 500 mV ...
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... Package Description 24-Lead LFCSP_VQ, 7” Tape and Reel 24-Lead LFCSP_VQ, 7” Tape and Reel 24-Lead LFCSP_VQ, Waffle Pack Evaluation Board Rev Page 0.60 MAX PIN 1 INDICATOR 2.45 EXPOSED 2.30 SQ PAD (BO TTOMVIEW) 2. 0.23 MIN 2.50 REF Package Option Ordering Quantity CP-24-2 250 CP-24-2 1,500 CP-24-2 64 ADL5370 ...
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... ADL5370 NOTES ©2006 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D06117-0-10/06(0) Rev Page ...