REP023: Upconverter from 350MHz to 3.5GHz with 9dB gain and 1.3dBm IIP3

This reference design (RD) shows how a downconverter with selectable LO doubler can be used as an upconverter. The RD achieves 9dB gain and 1.3dBm IIP3. The MAX2683 low-power downconverter designed to operate in the receive path of 3.5GHz wireless data transceivers is featured. Schematics, test setup, BOM, and performance results are shown.

Schematic PCB

REP001: Achieving the best balance of IIP3 and gain for AMPS FM mixers

This reference design (RD) for an RF mixer in the FM (AMPS) signal path custom tunes the output matching circuit to optimize the trade-off between IIP3 and the highest gain. The design features the MAX2324 low-noise amplifier (LNA) with RF mixer for cellular-band CDMA, TDMA, GMS, and EDGE applications.

Schematic PCB

REP012: Cellular LNA achieving +20dBm IIP3 in low-gain high-linearity mode

Reference design (RD) shows a dual-band, triple-mode CDMA front-end IC tuned to provide +20dBm in low-gain high-linearity mode. The RD features a CDMA low-noise amplifier (LNA) that is also useful for TDMA, GSM, EDGE, and WCDMA applications.The MAX2323 LNA/mixer is featured.

Schematic PCB

REP019: Dual-band front-end CDMA IC tuned to a single 110MHz IF

This application note assesses a tuned, dual-band, front-end CDMA IC with single 110MHZ IF. Focus is on the MAX2322, a low-noise amplifier (LNA) for dual-band CDMA cell-phone handsets. The MAX2323 can also be used in dual-band TDMA, GSM, EDGE, or WCDMA applications.

Schematic PCB

REP010: Dual-band IS-136 front-end IC operating at 183MHz IF

This reference design (RD) is for a dual-band CDMA front-end in an IS-136 TDMA receiver with all 183MHz IFs, The RD uses the MAX2338, a low-noise amplifier (LNA) with mixer that is useful for TDMA, GSM, EDGE, and WCDMA applications.

Schematic PCB

REP014: CDMA PA output power +28.5dBm provides -45dBc ACPR

This reference design (RD) shows how a CDMA PA, the MAX2265, provides -45dBc ACPR at +28.5dBm. Low-cost cellular CDMA power amplifier has good linearity and power-added efficiency for US cellular-band IS-95-based CDMA , PDC, and IS-136-based TDMA modulation formats. Schematics and performance data are shown.

Schematic PCB

REP015: Tuning dual-channel CDMA PA to achieve high linearity

This reference design (RD) shows how a cellular-band, CDMA linear power amplifier (PA) can be tuned for high linearity and narrowband CDMA. This RD features the MAX2264 RF power amplifier which is designed for IS-98-based CDMA, PDC , and IS-136 TDMA. Schematics and test setup are shown.

Schematic PCB

Designing robust, fault-tolerant motion control feedback systems

This article reviews basic servo systems and development of the fault-tolerant feedback systems for servo systems. Controller receiver circuit design, proper PC-board receiver circuit layout, and the encoder's signal cable and termination are discussed. Additionally, various types of industrial feedback encoders are presented, along with the various types of faults that can develop in a servo feedback system.

HFRD-26.0: GEPON SFF motherboard

Abstract: High-Frequency Reference Design (HFRD)-26.0 is a Small Form Factor (SFF) host board designed for evaluating GEPON and GPON SFF modules. The host board can be used to test a variety of different modules, but includes additional features for testing, monitoring, and programming HFRD-25.2 (Low-cost GEPON SFF ONT with µC). Features include: SFF MSA Compatible GUI Interface with USB Connection SMA Connectors for High-Speed Data Schematics and Bill of Materials Provided Gerber Files Available

MAX2170/MAX2171 DAB/T-DMB Reference Design

The MAX2170/MAX2171 tuner plus demodulator IC reference design demonstrates a compact daughter board solution for DAB and T-DMB. The design converts VHF-III and L-Band signals to a MPEG-2 transport stream.

MAX2160 ISDB-T Reference Design

This reference design for the MAX2160 tuner plus demodulator IC demonstrates a compact daughter-board solution for the ISDB-T standard (single-segment). This design converts UHF band signals (470MHz to 770MHz) to a MPEG-2 transport stream. The solution is intended for portable applications, such as cell-phone TVs and PDAs.

Choosing the Right 1-Wire Host for Your Embedded Application

This application note presents four categories of 1-Wire master circuits for embedded applications and discusses their capabilities and requirements in relation to available (ie, unused) system resources. The schematics shown here apply to short networks that do not extend beyond the radius of 1 meter and are populated with a small number of 1-Wire slaves. Instructions and a decision worksheet are included to identify the most cost-effective 1-Wire master for the application. The reader should be familiar with the basics of 1-Wire communication and microcontrollers.

MAX2165 DMB-TH USB Dongle Reference Design

This compact USB dongle design combines a MAX2165 direct-conversion tuner and a DMB-TH demodulator. The design converts a UHF signal (470MHz to 858MHz) to a MPEG-2 transport stream. Then the USB interface enables video viewing on a laptop or desktop computer.

DVB-T reference design based on MAX3580

MAX3541 DVB-T/PAL Tuner

The MAX3541 is an integrated, single-conversion terrestrial tuner IC for DVB-T and PAL. The device is designed to convert input signals in the VHF-Low, VHF-High, and UHF bands to an IF frequency of 36MHz. The MAX3541 is designed for television, analog/digital terrestrial receiver, and digital set-top box applications.

802.11b/g RF front-end module reference design using the MAX2830

This module uses the highly integrated MAX2830 RF transceiver. It is a complete RF front-end solution that meets the WLAN IEEE^SM 802.11b/g standard. The transmitter can deliver more than 15dBm Tx power at EVM < 5.6% with a 54Mbps OFDM 802.11g signal. The receiver can provide an IQ signal EVM < 9% with a -74.5dBm 54Mbps OFDM 802.11g signal.

900MHz full-duplex wireless transmitter reference design

This reference design covers the design of a transmitter inside a 900MHz full-duplex radio using the MAX2902 single-chip transmitter. The MAX2902 is designed for use in the 868MHz to 915MHz frequency band, and complies with FCC CFR47 part 15.247 902MHz to 928MHz ISM band specifications. The reference design is capable of delivering more than +19dBm with V _CC = 2.9V and I _CC = 170mA, and +20dBm with V _CC = 3.3V and I _CC = 190mA, while meeting 14dB of CNR (1.22Mbps BPSK) at 10:1 VSWR (all angles).

MAX2120 DVB-S Half-NIM Tuner Reference Design

This reference design is a commercial Half-NIM DVB-S tuner that uses Maxim's MAX2120 satellite tuner IC. The reference design connects to the motherboard through a 12-pin connector. The downconverted satellite signal from the LNB is supplied to an active, discrete loop-through, which splits the signal into two paths. One signal goes to the MAX2120 and the other provides an additional output from the STB.

WiBro reference design built with the MAX2837

The WiBro™ reference design is a complete RF front-end solution designed to meet requirements for the WiBro 2.3GHz to 2.4GHz mobile WMAN (Wireless Metropolitan Area Network) standard. This reference design uses the MAX2837 direct-conversion transceiver and demonstrates a complete WiBro single-band RF-to-baseband solution. It serves as a platform for designs in multiple form factors such as CardBus, miniPCI, and custom CPE modules. The design can be easily adapted for WiBro-only 3.3V laptop applications, or WiBro- only 5.0V CPE applications.

GPS USB Reference Design Using the MAX2769

The MAX2769 is a low-cost, single-conversion, low-IF frequency GPS receiver that provides 115dB cascaded gain and a 1.4dB cascaded NF. The MAX2769 GPS USB reference design, working together with the GeotateSM GPS software installed in a PC or laptop, forms a complete low-cost high-sensitivity GPS solution. The reference design provides high-precision position information with quick acquisition times. It demonstrates the excellent capabilities of the MAX2769 in a full GPS receiver design.