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| News and Technology Information
|ADUC7020 and OP2177 for HART interface signal conditioning circuit |
The ADuC7020 is fully integrated, 1 MSPS, 12-bit data acquisition systems incorporating high performance multichannel ADCs, 16-bit/32-bit MCUs, and Flash/EE memory on a single chip.<br>The OP2177/OP1177 is the fourth generation of ADI., industry-standard OP07 amplifier family. OP2177 is a high precision, low noise operational amplifier with a combination of extremely low offset voltage and very low input bias currents. Unlike JFET amplifiers, the low bias and offset currents are relatively insensitive to ambient temperatures, even up to 125degree.<br>
DS18B20 Digital Thermometer provides 9-12bit temperature readings which indicate the temperature of the device
The DS18B20 Digital Thermometer provide 9-12bit temperature readings which<br>indicate the temperature of the device.<br>Information is sent to or from the DS18B20 over a one-Wire interface, so that only one wire needs to be connected from a central microprocessor to a DS18B20. Power for reading, writing, and performing temperature conversions can be derived from the data line itself with no need for an external power source.<br>Because each DS18B20 contains a unique silicon serial number, multiple DS18B20s can exist on the same one-Wire bus. This allows for placing temperature sensors in many different places. Applications where this feature is useful include HVAC environmental controls, sensing temperatures inside buildings,equipment or machinery, and process monitoring and control.
STM32F103VC Mainstream Performance line, ARM Cortex-M3 MCU with 256 Kbytes Flash, motor control, USB and CAN
The STM32F103xC, STM32F103xD and STM32F103xE performance line family incorporates the high-performance ARM®Cortex®-M3 32-bit RISC core operating at a 72 MHz frequency, high-speed embedded memories (Flash memory up to 512 Kbytes and SRAM up to 64 Kbytes), and an extensive range of enhanced I/Os and peripherals connected to two APB buses. All devices offer three 12-bit ADCs, four general-purpose 16-bit timers plus two PWM timers, as well as standard and advanced communication interfaces: up to two I2Cs, three SPIs, two I2Ss, one SDIO, five USARTs, an USB and a CAN
|AD9788BSVZ Dual 16-Bit 800 MSPS DAC |
The AD9788BSVZ are 16-bit, high dynamic range TxDAC devices, respectively, that provide a sample rate of 800 MSPS, permitting multicarrier generation up to the Nyquist frequency. Features are included for optimizing direct conversion transmit applications, including complex digital modulation, as well as gain, phase, and offset compensation. The DAC outputs are optimized to interface seamlessly with analog quadrature modulators, such as the ADL537x family from Analog Devices, Inc. A serial peripheral interface (SPI) provides for programming and readback of many internal parameters. Full-scale output current can be programmed over a range of 10 mA to 30 mA. The AD978x family is manufactured on a 0.18um CMOS process and operates from 1.8 V and 3.3 V supplies. It is enclosed in a 100-lead TQFP package.
|LTC3801 - DC/DC Controllers in ThinSOT|
The LTC3801/LTC3801B are constant frequency current mode step-down DC/DC controllers in a low profile (1mm max) 6-lead SOT-23 (ThinSOT)package. The parts provide excellent AC and DC load and line regulation with +1.5%- output voltage accuracy. The LTC3801 consumes only 195mA of quiescent current in normal operation, dropping to 16µA under no-load conditions.
The LTC3801/LTC3801B incorporate an undervoltage lockout feature that shuts down the device when the input voltage falls below 2.2V. The LTC3801 automatically switches into Burst Mode operation at light loads which enhances efficiency at low output current. In the LTC3801B, Burst Mode operation is disabled for lower output ripple at light loads.
To further maximize the life of a battery source, the external P-channel MOSFET is turned on continuously in dropout. High switching frequency of 550kHz allows the use of a small inductor.
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