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.

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CN0144

Using LO two-way modulator to build a wideband low-EVM direct conversion transmitter

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CN0348

16-bit, single-supply, buffered voltage output analog-to-digital converter with less than ±1 LSB integral and differential nonlinearity

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CN0340

True RMS RF detector with 95 dB detection range

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2017 Electronic Competition H Question-Remote Amplitude-Frequency Characteristics Test Device-Design Plan and Report (3 National Awards)

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CN0107

Implement electronic scale design using the 24-bit Σ-Δ ADC AD7780 with built-in PGA

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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (East China Jiaotong University Institute of Technology)

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AT86RF231 PCB Antenna Diversity Reference Design

This reference design demonstrates a full-function network node with the AT86RF231 radio transceiver, which is capable of hosting a MAC layer implementation. Two ceramic chip antennas increase the link budget in a typical indoor scenario with multi-path fading effects.

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Motor current detection system solution based on ADSP-CM408 and AD7403

For small and medium power motor applications, the EPSH-MPC development platform provides current sampling of the isolated analog-to-digital converter AD7403. The external current loop is converted into a corresponding shunt voltage through a shunt resistor and input to the voltage test terminal of the AD7403. The AD7403 outputs according to the clock signal given by CM408F. ADC bit stream, CM408F enables the built-in SINC filter on the input bit stream to calculate the corresponding 16-bit ADC value, and stores the data into the corresponding ring queue through DMA. The host computer software can use the UART-USB port Or obtain the display of data samples through the RS485 port, you can intuitively see the acquisition effect of AD7403, and the collected data can be stored in an excel table to facilitate corresponding analysis of the data.

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2019 E-Contest Question K-Simple Multifunctional Liquid Container (Chongqing Division)

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CN0147

Utilizing the ADP150 low-noise LDO regulator to power the ADF4350 PLL and VCO to reduce phase noise

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CN0310

24-bit, 250 kSPS single-supply data acquisition system

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Calibration system for pressure transmitter based on AD855X programmable gain amplifier

This reference design addresses this need for pre-factory calibration and provides a complete multi-channel fully automatic calibration system for pressure transmitter calibration before leaving the factory.

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2020 Electronic Competition Question A-Wireless Motion Sensor Node Design (Dalian University of Technology)

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MAX2830 WLAN Reference Design

This reference design is a complete RF front-end solution designed to meet the WLAN IEEE® 802.11b/g standard. Using the MAX2830 RF transceiver, the design is capable of accommodating full range of 802.11g OFDM data rates (6, 9, 12, 18, 24, 36, 48, and 54Mbps) and 802.11b QPSK data rates (1, 2, 5.5, and 11Mbps). This solution offers high performance, small size, and low BOM cost.

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.

High-efficiency and low-cost 400W power supply design based on ADP1051

This reference design uses the ADP1051, a newly launched low-cost and highly integrated power supply chip from ADI, to control the energy conversion from input to output. This power supply design comprehensively considers factors of efficiency and cost, and designs a solution with optimal efficiency and cost at the 400W power level. It is suitable for power amplifier power supply systems of wireless communication base stations and railway power supply systems in the industrial field.

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CN0225

High-impedance, high-CMR, ±10 V analog front-end signal conditioning for industrial process control and automation

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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.

CN0201

Complete 5 V single supply 8-channel multiplexed data acquisition system with integrated PGIA for industrial grade signals

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