Secure Communications
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Military organizations are extensive users of satellite technology. Compared with terrestrial solutions, satellite-based communications offer a wider coverage, greater power choices and more flexibility in terms of frequency. Whether ground-based or satellite-based, secure communications involve complex encryption algorithms are used requiring a separate digital signal process. High speed baseband A/Ds and Tx DACs along with associated high speed amplifiers are key elements. ADI offers several key modulation/demodulation devices for direct RF or baseband/IF modulation schemes.
Application Notes
AN-835: Understanding High Speed ADC Testing and Evaluation (pdf, 1,358,339 bytes)
AN-793: ESD/Latch-Up Considerations with iCoupler® Isolation Products (pdf, 252,700 bytes)
AN-782: Monitoring High Voltages with the ADM1062-ADM1069 Super Sequencers™ (pdf, 62,643 bytes)
AN-780: Monitoring Negative Voltages with the ADM1062-ADM1069 Super Sequencers™ (pdf, 281,876 bytes)
AN-756: Sampled Systems and the Effects of Clock Phase Noise and Jitter (pdf, 298,702 bytes)
AN-755: EEPROM Checksum Information for the ADM1060 (pdf, 101,076 bytes)
AN-742: Frequency Domain Response of Switched-Capacitor ADCs (pdf, 329,461 bytes)
AN-741: Little Known Characteristics of Phase Noise (pdf, 1,719,696 bytes)
AN-698: Configuration Registers of ADM106x (pdf, 1,880,311 bytes)
AN-588: AD7416/AD7417/AD7418 Power-On Reset Circuit (pdf, 30,326 bytes)
If a large number of decoupling capacitors are used on the VDD line, re-applying power before VDD has discharged to 0 V can cause the AD7416/AD7417/AD7418 to reset into an unknown. state.
AN-584: Using the AD813X Differential Amplifier (pdf, 178,358 bytes)
The AD813x differs from conventional op amps by the external presence of an additional input and output. The additional input, VOGM, controls the output common mode voltage.
AN-583: Using the SSM2167 Evaluation Board (pdf, 135,337 bytes)
This document explains how the evaluation board is set up and how to use it to evaluate the SSM-2167.
AN-581: Biasing and Decoupling Op Amps in Single Supply Applications (pdf, 170,063 bytes)
AN-561: AD7416 Connects to the PIC16F84 via Emulated I²C™ Interface (pdf, 75,851 bytes)
AN-501: Aperture Uncertainty and ADC System Performance (pdf, 233,126 bytes)
A Key Concern in IF Sampling is that of Aperture Uncertainty (Jitter)
AN-417: Fast Rail-to-Rail Operational Amplifiers Ease Design Constraints in Low Voltage High Speed Systems (pdf, 234,127 bytes)
Movement towards lower power supply voltages is driven by the demand that systems consume less and less power coupled with the desire to reduce the number of power supply voltages in the system. The following applications are discussed: Single-Ended and Differential Input ADC Input Circuits, Video Line Driver, Active Filter, HDSL Transceiver, and Transformer Drive Circuits.
AN-410: Overcoming Converter Nonlinearities with Dither (pdf, 117,930 bytes)
AN-402: Replacing Output Clamping Op Amps with Input Clamping Amps (pdf, 57,313 bytes)
So far most clamping amplifiers have relied upon an output clamping architecture and are called output clamp amps (OCAs). A new architecture called an input clamp amp (ICA) offers superior clamping accuracy and lower distortion.
AN-342: Analog Signal-Handling for High Speed and Accuracy. (pdf, 479,545 bytes)
Signal handling techniques for optimizing DAC and ADC performance.
AN-302: Exploit Digital Advantages in an SSB Receiver (pdf, 427,799 bytes)
AN-297: Test Video A/D Converters Under Dynamic Conditions (pdf, 748,880 bytes)
AN-296: Build a Single-Shot Recorder to Catch Fast Transients (pdf, 786,374 bytes)
AN-282: Fundamentals of Sampled Data Systems (pdf, 2,182,923 bytes)
AN-280: Mixed Signal Circuit Technologies (pdf, 2,152,032 bytes)
Considers problems which arise when reality (& Murphy) intervene in a design which otherwise seems satisfactory in terms of theory and modeling.
AN-257: Careful Design Tames High Speed Op Amps (pdf, 626,042 bytes)
AN-108: JFET-Input Amps are Unrivaled for Speed and Accuracy (pdf, 511,291 bytes)
AN-101: Cross Plot Generator Allows Quick A/D Converter Evaluation (pdf, 286,867 bytes)
AN-781: Monitoring Additional Supplies with the ADM1062-ADM1069 Super Sequencers™ (pdf, 98,632 bytes)
1.Direct Convert IF or RF-IF Processor
i.Demodulators
AD630
AD8333
ii.Mixers/Multipliers
AD831
AD8342
ADL5350
2.RF Gain Control
i.Logarithmic Amplifiers
AD606
AD8302
ADL5306
ii.RMS Detectors
AD8361
ADL5500
3.ADC
i.High-Speed Baseband A/D
AD12401
AD9430-170
4.Mod / Demod DSP
i.Digital RX/TX Signal Processors
AD6622
ii.SHARC Processor
ADSP-21261
ADSP-21375
5.DAC
i.TX High-Performance D/A
AD9744
AD9772A
6.Encryption Processor
i.SHARC Processor
ADSP-21261
ADSP-21375
7.Application Processor
i.SHARC Processor
ADSP-21261
ADSP-21375
8.AMP
i.LCD Display and High I Drivers
AD8628
OP113
ii.Video Performance Op Amp
AD8010
iii.Analog LCD Display Drivers
ADD8754
AD8509
iv.Broadband Amplifiers
AD45048
AD8320
9.Audio Amp
i.Audio Microphone Pre-Amps
SSM2165
10.Voiceband Codec
i.Audio CODECs
AD1839A
ADAV803
11.Audio AMP
i.Audio Performance Amp
AD8674
ADA4004-4
OP27
ii.Audio Power Amplifiers
AD1990
SSM2211
12.Clock Distribution ICs
i.Direct Digital Synthesizers
AD9831
AD5930
ii.Comparators
ADCMP567
AD790
AD8561
ADCMP350
CMP04
iii. PLL Synthesizers/VCOs
AD809
ADF4001
ADF4360-0
iv.Clock Distribution ICs
AD9510
AD9540
13.PLL/ Multiband Synthesizer
i.Direct Digital Synthesizers
AD9831
AD9858
ii.PLL Synthesizers/VCOs
AD809
ADF4001
ADF4360-0
iii.PLL Synthesizers/VCOs
AD809
ADF4001
ADF4360-0
14.AMP
i.High-Speed Low-Power Op Amp
AD8022
AD8066
15.
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i.High-Speed Low-Power Op Amp
AD8022
AD8066
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