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Blog blog, news from technology , fresh release technologies and components , interesting devices and many useful electronic circuits and schematics diagrams .

MAX2078 octal-channel ultrasound receiver

Maxim introduces MAX2078 which is a fully integrated bipolar, high-density octal-channel ultrasound receiver . MAX2078 IC allows the user to achieve high-end 2D, PW, and CW Doppler (CWD) imaging capability using substantially less space and power. The highly compact imaging receiver lineup, including low-noise amplifier (LNA), variable-gain amplifier (VGA), and anti-alias filter (AAF), achieves an ultra-low 2.4dB noise figure at RS = RIN = 200Ω at a very low 64.8mW per channel power dissipation.
Main features of the MAX2078 are : 8 Full Channels of :LNA, VGA, AAF and CWD , Pin Compatible with MAX2077 , Ultra-Low Full-Channel Noise Figure of 2.4dB at RIN = RS = 200Ω , Low Output-Referred Noise of 23nV/√Hz at 5MHz, High Near-Carrier SNR of 140dBc/Hz at 1kHz , Offset from a 5MHz, 1VP-P Output Signal and 20dB of Gain for Excellent Low-Velocity PW and Color-Flow Doppler Sensitivity Selectable Active Input-Impedance ( 50Ω, 100Ω, 200Ω, and 1kΩ ) , Wide Input-Voltage Range of 330mVP-P in High LNA Gain Mode and 550mVP-P in Low LNA Gain Mode , Integrated Selectable 3-Pole 9MHz, 10MHz,15MHz, and 18MHz Butterworth AAF .
MAX2078 octal-channel ultrasound receiver

MCP4728 Digital-to-Analog Convertor (DAC)

Microchip technology introduces the MCP4728 Digital-to-Analog Convertor (DAC) with non-volatile memory (EEPROM). The MCP4728 DAC input codes, device configuration bits, and I2C address bits are programmable to the non-volatile memory (EEPROM) by using I2C serial interface commands. The non-volatile memory feature enables the DAC device to hold the DAC input codes during power-off time, allowing the DAC outputs to be available immediately after power-up with the saved settings.
The MCP4728 has a two-wire I2C compatible serial interface for standard (100 kHz), fast (400 kHz), or high speed (3.4 MHz) mode.
The MCP4728 DAC is an ideal device for applications requiring design simplicity with high precision, and for applications requiring the DAC device settings to be saved during power-off time.
The MCP4728 can be used in applications like : Set Point or Offset Adjustment , Sensor Calibration , Closed-Loop Servo Control , Low Power Portable Instrumentation , PC Peripherals , Programmable Voltage and Current Source , Industrial Process Control , Instrumentation .
Main features of the MCP4728 are : 12-Bit Voltage Output DAC with 4 Buffered Outputs , On-Board Non-Volatile Memory (EEPROM) for , DAC Codes and I2CTM Address Bits , Internal or External Voltage Reference Selection , Fast Settling Time: 6 μs (typical) , Normal or Power-Down Mode , Low Power Consumption , Single-Supply Operation: 2.7V to 5.5V , I2C Interface .MCP4728 Digital-to-Analog Convertor (DAC)

MAX14521E DC-AC converter

Maxim IC introduces the MAX14521E quad-output high-voltage DC-AC converter that drives four electroluminescent (EL) lamps. The input voltage range of the max14521 is between 2.7V to 5.5V that allows the device to accept a variety of voltage sources such as single-cell lithium-ion (Li+) batteries.

The lamp outputs of the device generate up to 300VP-P for maximum lamp brightness. The high-voltage outputs are ESD protected up to ±15kV Human Body Model (HBM), ±6kV Contact Discharge, and ±8kV Air Gap Discharge, as specified in IEC 61000-4-2.
Main features of the MAX14521E are : 300VP-P Maximum Output for Highest Brightness , ESD-Protected EL Lamp Outputs , ±15kV Human Body Model , ±6kV IEC 61000-4-2 Contact ESD Protection , ±8kV IEC 61000-4-2 Air Gap Discharge , 2.7V to 5.5V Input Voltage Range , I²C Interface ( for Control of Brightness, EL Frequency, Boost Frequency, Shape ) , Sinusoidal Output for Low Audible Noise , Individual Dimming Control , Individually Adjustable Output Brightness Ramping Rate , ±3% EL Output Frequency Accuracy for Truest EL Panel Color , Audio Input for Dynamic Lighting Effects , Spread-Spectrum Boost Converter , 100nA Shutdown Current .
MAX14521E DC-AC converter


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