BTS-3G Direct Up Conversion Tx
Analog Devices’ 3G base station solutions for transmitter direct up conversion architectures produce less mixing spurs, require less filtering, lower power consumption, and fewer components in the signal path solution. A transmit DAC, IQ modulator, LO synthesizer, RF VGA and RMS power detector form the core of the up conversion signal path. View ADI's detailed Product Solutions for Wireless Infrastructure brochure (pdf, 77,043 bytes).
Application Notes
- AN-935 : Designing an ADC Transformer-Coupled Front End
- AN-922 : Digital Pulse-Shaping Filter Basics
- AN-920 : Gain, LO, and Phase Compensation in a Single Sideband Transmitter Using the AD9788 TxDAC and ADL5372 Quadrature Modulator
- AN-912 : Driving a Center-Tapped Transformer with a Balanced Current-Output DAC
- AN-911 : A Detailed Guide to Powering the TigerSHARC Processors
- AN-878 : High Speed ADC SPI Control Software
- AN-877 : Interfacing to High Speed ADCs via SPI
- AN-873 : Lock Detect on the ADF4xxx Family of PLL Synthesizers
- AN-808 : Multicarrier CDMA2000 Feasibility
The goal of this application note is to determine the feasibility of implementing a multicarrier CDMA2000 transceiver and what the major subsystem performances must be. - AN-807 : Multicarrier WCDMA Feasibility
- AN-782 : Monitoring High Voltages with the ADM1062-ADM1069 Super Sequencers™
- AN-781 : Monitoring Additional Supplies with the ADM1062-ADM1069 Super Sequencers™
- AN-780 : 0: Monitoring Negative Voltages with the ADM1062-ADM1069 Super Sequencers™
- AN-756 : Sampled Systems and the Effects of Clock Phase Noise and Jitter
- AN-755 : EEPROM Checksum Information for the ADM1060
- AN-742 : Frequency Domain Response of Switched-Capacitor ADCs
- AN-723 : Interrupt Generation Using the ADM106x
- AN-698 : Configuration Registers of ADM1062/ADM1063/ADM1064/ADM1065/ADM1066/ADM1067 (Rev. A, 2/07)
- AN-694 : Hot Swap and Blocking FET Control Using 2 x ADM1073 Hot Swap Controllers
- AN-667 : Up/Down Sequence of Supplies Using the ADM1060
- AN-591 : ADM1070 Hot Swap Controller
This App Note Describes Operation of the ADM1070 Under Various Hot Swap Insertion and Removal Conditions. - AN-584 : Using the AD813X Differential Amplifier
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-501 : Aperture Uncertainty and ADC System Performance
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
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 : 0: Overcoming Converter Nonlinearities with Dither
- AN-30 : 0: Ask the Applications Engineer - PLL Synthesizers
- AN-3 : AB-3: Digital Nulling of Precision Op Amps
- AN-117 : OP-42 Advanced SPICE Macro-Model
Ask the Experts
- Analog Devices, Inc. Application Engineering Department
For technical support and additional information, please contact our experienced applications engineers who are readily available to assist you. Thank you.
Product Reviews
- Quadrature Modulator ICs Span 250-MHz to 4-GHz
(eeProduct Center, 5/8/06)
Technical Articles
- Converters for 3G are Optimized for Cost, Size and Power
by Chris Cloninger, Analog Devices, Inc. (Planet Analog, 4/6/2006) - Phase-Locked Loops for High-Frequency Receivers and Transmitters - Part 2
- Phase Locked Loops for High-Frequency Receivers and Transmitters – Part 1
- Design a Logamp RF Pulse Detector
by Eamon Nash
(Microwaves & RF, January 1, 2000) - Optimizing Receiver Performance Through Error Vector Analysis
by Eric Newman, Analog Devices Inc. (Microwave Product Digest, October 2004) - Phase Locked Loops for High-Frequency Receivers and Transmitters – Part 3
- Digital Upconverter IC Tames Complex Modulation
by Ken Gentile, Analog Devices, Inc.
... An improved 14-bit architecture, simplified synchronization, and enhanced power-saving circuitry are a few of the features of this quadrature digital upconverter.
(Reprinted with permission of Microwaves & RF where it first appeared in the August 2000 issue) - Assessing Multicarrier Direct-Conversion Transmitters
By Eamon Nash, Analog Devices,Inc. (Microwaves and RF, Feb 2004) - Integrated DDS Chip Takes Steps To 2.7 GHz
This highly integrated 2.7-GHz source includes all essential DDS circuitry along with a clock driver, divider, high-resolution DAC, and combination phase detector/charge pump. (ED Online, April 2004) - Make a Truly Linear RF-Power Detector
(EDN, Design Ideas, 9/19/2002) - Matching An ADC To A Transformer
by Rob Reeder, Analog Devices, Inc.
(Microwaves & RF, 7/2007) - Design A Clock-Distribution Strategy With Confidence
by Demetrios Efstathiou (Electronic Design, April 27, 2006) - Techniques Simplify Wireless Transmission
... Approaches That Were Once Thought Too Costly To Implement Now Have New Life, Thanks To The Availability Of Integrated Devices. (Wireless Systems Design, January/February 2003) - Improved DDS Devices Enable Advanced Comm Systems
by Valoree Young, Analog Devices
(Electronic Products, September 2006) - Single Chip Realizes Direct-Conversion Rx
... Direct-conversion Rxs offer advantages in simplicity compared to conventional superheterodyne approaches, although attention must be paid to some of the trade-offs.
(Microwaves & RF, October 2002) - Simplifying Direct-Conversion Tx Paths in Wireless Designs
(CommsDesign, 11/6/2002) - Make Precise Base-Station Power Measurements
(Microwaves and RF, November 2002) - Digital Potentiometers Vary Amplitude In DDS Devices
(Electronic Design, Ideas for Design, 5/29/2000) - Single-Sideband Upconversion of Quadrature DDS Signals to the 800-to-2500MHz