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Thursday, April 09, 2009

TDA5140A Brushless DC Motor Drive - NXP

TDA5140A Brushless DC Motor Drive - NXP

"The TDA5140A is a bipolar integrated circuit used to drive 3-phase brushless DC motors in full-wave mode. "

Features Include -

  • Full-wave commutation without position sensors.
  • Three push-pull outputs: 0.8 A output current.
  • Thermal protection - Flyback diodes
  • Tacho output without extra sensor

AN93014_EIE; TDA5140AT with Position Indicator Page-In & Speed Control - PDF

NXP Semiconductors - NXP - Application Notes

NXP (for Next eXPerience) semiconductor company founded by Philips.

ZA9L1 Secure ARM Microcontroller - Maxim Zatara

ZA9L1 Secure ARM Microcontroller - Maxim Zatara

The Zatara ZA9L1 is a highly integrated system-on-chip (SoC) microcontroller based on the ARM922T 32-bit/16-bit core and tailored to the specific requirements of point-of-sale (POS) terminal design and meet the strict security requirements of the Payment Card Industry (PCI) Security Standards Council 2.0 specification.

Features Include

  • Real-Time Clock
  • Watchdog Timer (WDT)
  • Two Dedicated SPI Interfaces
  • USB 2.0 OTG Interface
  • Nine Timer/Counters
  • Three UARTs

Security Features Include

  • Embedded Boot ROM
  • 32-Bit Unique ID Number
  • NIST 800-22-Compliant Random-Number Generator
  • FIPS 180-2-Compliant SHA-1 Hash Generator

POS Security Features for PCI Compliance

  • Voltage and Temperature Sensors
  • Sensors for Tamper Switches and Wire Mesh
  • Clock Frequency and Glitch Protection
  • Battery-Backed Secure Memory with Active Zeroization

Wednesday, April 08, 2009

ADS7816 - 12-Bit High Speed Sampling AD

The ADS7816 is a 12-bit, 200kHz sampling analog to- digital converter. It features low power operation with automatic power down, a synchronous serial interface, and a differential input. The reference voltage can be varied from 100mV to 5V, with a corresponding resolution from 24mV to 1.22mV. - From TI Applications

ADS7816  - 12-Bit High Speed A/D Converter

Low power, automatic power down, and small size make the ADS7816 ideal for battery operated systems or for systems where a large number of signals must be acquired simultaneously. It is also ideal for remote and/or isolated data acquisition.

ADS7816 - 12-Bit High Speed Sampling AD

12-Bit High Speed Micro Power Sampling Analog-to-Digital converter

The ADS7816 is a classic successive approximation register (SAR) analog-to-digital (A/D) converter. The architecture is based on capacitive redistribution which inherently includes a sample/hold function.

The converter is fabricated on a 0.6ยต CMOS process. The architecture and process allow the ADS7816 to acquire and convert an analog signal at up to 200,000 conversions per second while consuming very little power

LM3445 - TRIAC dimmable offline LED driver

Conventional TRIAC dimmers are designed to interface to a resistive load (halogen or incandescent bulb), while today's LED driver solutions interfaced to a standard wall dimmer produce 120 Hz flicker of the LED and/or do not allow 100:1 dimming.

LM3445 - TRIAC dimmable offline LED driver

The LM3445 provides a constant current for illuminating high power LEDs and includes a TRIAC . The LM3445 contains all the necessary circuitry to build a line-powered (mains powered) constant current LED driver whose output current can be controlled with a conventional TRIAC dimmer.

LM3445 - TRIAC dimmable offline LED driver

Thermal shutdown limits total power dissipation by turning off the output switch when the IC junction temperature exceeds 165°C. After thermal shutdown occurs, the output switch doesn ’t turn on until the junction temperature drops to approximately 145°C