REP008: Dual-band front-end IC operating at universal 85MHz low IF for CDMA, PCS and AMPS

This reference design (RD) is for a dual-band, triple-mode front-end IC using only 85MHz IF centers for processing PCS, cellular CDMA, and cellular AMPS. The RD uses the MAX2323, a low-noise amplifier (LNA) with mixer, that is useful for TDMA, GSM, EDGE, and WCDMA applications.

Schematic PCB

REP002: Dual-band IS-136 TDMA RF front-end application circuit

Reference design (RD) is for a dual-band IS-136 TDMA RF front-end. Data show that the MAX2321 dual-band low-noise amplifier (LNA) and mixer IC exceeds IS-136 specifications and needs no additional or special components as a front-end for a TDMA application.

Schematic PCB

REP021: Front-end devices for 2.5GHz Globalstar and IS-95

This reference design (RD) is for a dual-band CDMA front-end IC that uses a PCS-band signal path for 2.5GHz LEO satellite channel and a cellular-band signal path for GlobalStar IS-95 CDMA applications. The MAX2323 LNA plus mixer for dual-band CDMA handsets is featured.

Schematic PCB

REP007: Driving the IFR3100 IF Demodulator with a Cellular Front-End IC

This reference design (RD) shows how a dual-band, dual-mode CDMA front-end IC can drive an IRF3100 IF demodulator. The RD features the MAX2323 CDMA low-noise amplifier which is also useful for TDMA, GSM, EDGE, and WCDMA applications. Schematics, the bill of materials (BOM), and performance results are shown.

Schematic PCB

REP018: Dual-band dual-mode FE IC operating at universal 183.6MHz IF

Reference design (RD) is a dual-band, triple-mode CDMA front-end IC in a receiver with all 183MHz IFs for processing cellular CDMA. The RD uses the MAX2323, a low-noise amplifier (LNA) with mixer, that is useful for TDMA, GSM, EDGE, and WCDMA applications.

Schematic PCB

REP016: Japanese 110MHz IF dual-band cellular CDMA RF front-end

This reference design (RD) is for a dual-band, dual-mode CDMA front-end for Japanese cellular CDMA at 110MHz IF. The RD uses a low-noise amplifier (LNA) with mixer, the MAX2325, that is also useful for TDMA, GSM, and EDGE applications. Schematics and bill of materials are shown.

Schematic PCB

REP020: Dual-band dual-mode FE IC operating at universal 210MHz IF

This reference design (RD) is for a dual-band, dual-mode CDMA front-end that uses a CDMA LNA/mixer, the MAX2323. The RD retunes the FM analog and the cellular/PCS digital mixers to 210MHz IF. This CDMA low-noise amplifier is also useful for TDMA, GSM, EDGE, and WCDMA applications. Schematics and bill of materials are shown.

Schematic PCB

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.