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.

4-20mA Conditioning - XTR101 TI BB

4-20mA Conditioning - XTR101 TI BB

These are Burr Brown Devices from TI. The BB Chips are excellent devices and High Precision, but a bit more expensive. These can be used when customer demands a Higher Quality and Precision. These are good for High Reliability Industrial Instrumentation. - delabs

From TI Data Sheets -

The XTR101 is a microcircuit, 4-20mA, two-wire transmitter containing a high accuracy instrumentation amplifier (IA), a voltage-controlled output current source, and dual-matched precision current reference.

The XTR106 is a low cost, monolithic 4-20mA, two-wire current transmitter designed for bridge sensors. It provides complete bridge excitation (2.5V or 5V reference), instrumentation amplifier, sensor linearization, and current output circuitry.

The XTR115 and XTR116 are precision current output converters designed to transmit analog 4-to-20mA signals over an industry standard current loop. They provide accurate current scaling and output current limit functions.

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

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

  • l 200kHz SAMPLING RATE
  • l MICRO POWER:
  • 1.9mW at 200kHz
  • 150mW at 12.5kHz
  • l POWER DOWN: 3mA Max
  • l 8-PIN MINI-DIP, SOIC, AND
  • l DIFFERENTIAL INPUT
  • l SERIAL INTERFACE

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

LM3445 - TRIAC dimmable offline LED driver

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....."

TRIAC dimmable Solutions -o- WEBENCH LED Designer

Features Include

  • Application voltage range from 80 VAC to 270 VAC
  • Angle detector/decoder enables wide (100:1) full range dimming
  • Scalable output current up to and greater than 1A

New Product

LM3450/50A Phase Dimmable LED Driver. Power factor controller (PFC) with separate phase dimming decoder which interprets the phase angle and remaps it to a 500Hz PWM output. A dimmable off-line LED driver for 10-100W loads can be designed with this.

  • Over-voltage protection
  • Feedback short circuit protection
  • Analog dimming
  • Low power operation

ypical Flyback Application of LM3450

Blocks

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