Integrated Circuits (Page 2)

Datasheets of ICs or Chips i have used in my designs.

National Semiconductor was an American semiconductor manufacturer, that specialized in analog devices and subsystems, formerly headquartered in Santa Clara, California, USA. The products of National Semiconductor included power management circuits, display drivers, audio and operational amplifiers, communication interface products and data conversion solutions.

Wiki of National Semiconductor

National’s key markets included wireless handsets, displays and a variety of broad electronics markets, including medical, automotive, industrial, and test and measurement applications.

National Semiconductor is part of TI

On September 23, 2011, the company formally became part of Texas Instruments as the “Silicon Valley” division.

An Exquisite Evaluation Board from National Semiconductor

The LMH0356 Serial Digital Interface (SDI) reclocker is designed to recover a clean clock from a serial digital video signal which may be contaminated by jitter and to resynchronize the input video data to the recovered clean clock. The LMH0356 SDI reclocker accepts signals conforming to standards SMPTE 259M (C), SMPTE 292M, and SMPTE 424M.

The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip. Designed primarily for power-supply control, this device offers the flexibility to tailor the power-supply control circuitry to a specific application.

PWM Control Circuit – TL494

  • Complete PWM Power-Control Circuitry
  • Uncommitted Outputs for 200-mA Sink or Source Current
  • Output Control Selects Single-Ended or Push-Pull Operation
  • Internal Circuitry Prohibits Double Pulse at Either Output
  • Variable Dead Time Provides Control Over Total Range
  • Internal Regulator Provides a Stable 5-V Reference Supply With 5% Tolerance
  • Circuit Architecture Allows Easy Synchronization

PWM Control Circuit - TL494

The TL494 contains two error amplifiers, an on-chip adjustable oscillator, a dead-time control (DTC) comparator, a pulse-steering control flip-flop, a 5-V, 5%-precision regulator, and output-control circuits.

TL494 Related Links

Texas Instruments, better known in the electronics industry (and popularly) as TI, is an American company based in Dallas, Texas, USA, renowned for developing and commercializing semiconductor and computer technology.

Texas Instruments – TI Semiconductors

Chip IC Products include Solutions in Analog, DSP- Digital Signal Processing, Power Management, A/D Converter, Microcontroller based Systems, Mixed Signal Designs, Multiplexers and Thermal Management Solutions.

A Vintage Calculator from TI

Texas Instruments

Texas Instruments – wiki

TI produced the world’s first commercial silicon transistor in 1950, and designed and manufactured the first transistor radio in 1954. Jack Kilby invented the integrated circuit in 1958 while working at TI’s Central Research Labs.

TI also invented the hand-held calculator in 1967, and introduced the first single-chip microcontroller (MCU) in 1970, which combined all the elements of computing onto one piece of silicon.

Texas Instruments - TI Semiconductors

A Developer Evaluation Embedded System

Texas Instruments Embedded Portfolio Overview is made up of three sub-divisions: Wireless, Microcontrollers, and Processors

Embedded processors are the processing brains of electronics that gather inputs from analog chips and perform computational processing to operate a system.

The Intersil ICL7135 precision A/D converter, with its multiplexed BCD output and digit drivers, combines dual-slope conversion reliability with ±1 in 20,000 count accuracy and is ideally suited for the visual display DVM/DPM market. The 2.0000V full scale capability, auto-zero, and auto-polarity are combined with true ratiometric operation, almost ideal differential linearity and true differential input. All necessary active devices are contained on a single CMOS lC, with the exception of display drivers, reference, and a clock.

ICL7135 4 and Half A to D converter with BCD Output

ICL7135 Device Information

  • Accuracy Guaranteed to ±1 Count Over Entire ±20000 Counts (2.0000V Full Scale)
  • Guaranteed Zero Reading for 0V Input
  • 1pA Typical Input Leakage Current
  • True Differential Input
  • True Polarity at Zero Count for Precise Null Detection
  • Single Reference Voltage Required
  • Overrange and Underrange Signals Available for Auto-Range Capability
  • All Outputs TTL Compatible
  • Blinking Outputs Gives Visual Indication of Overrange
  • Six Auxiliary Inputs/Outputs are Available for Interfacing to UARTs, Microprocessors, or Other Circuitry
  • Multiplexed BCD Outputs

See related delabs projects

The ICL8038 waveform generator is a monolithic integrated circuit capable of producing high accuracy sine, square, triangular, sawtooth and pulse waveforms with a minimum of external components. The frequency (or repetition rate) can be selected externally from 0.001Hz to more than 300kHz using either resistors or capacitors, and frequency modulation and sweeping can be accomplished with an external voltage…. The chip is available in some stores, not in production. (This is another chip of intersil i used for many things – delabs)

ICL8038 Device Information

  • Low Frequency Drift with Temperature 250ppm/oC
  • Low Distortion 1%(SineWave Output)
  • High Linearity 0.1%(Triangle Wave Output)
  • Wide Frequency Range 0.001Hz to 300kHz
  • Variable Duty Cycle 2%to 98%
  • High Level Outputs TTL to 28V
  • Simultaneous Sine, Square, and Triangle Wave Outputs
  • Easy to Use – Just a Handful of External Components Required

Everything You Always Wanted to Know About the ICL8038

ICL8038 Versatile Waveform Generator

Use in Phase Locked Loops – Its high frequency stability makes the ICL8038 an ideal building block for a phase locked loop as shown in Figure 9. In this application the remaining functional blocks, the phase detector and the amplifier, can be formed by a number of available ICs (e.g., MC4344, NE562).

The linearity of input sweep voltage versus output frequency can be significantly improved by using an op amp as shown in Figure 10.

The LM111, LM211 and LM311 are voltage comparators that have input currents nearly a thousand times lower than devices like the LM106 or LM710. They are also designed to operate over a wider range of supply voltages: from standard ±15V op amp supplies down to the single 5V supply used for IC logic.

LM311 – Voltage Comparator

LM311 - Voltage Comparator

Both the inputs and the outputs of the LM111, LM211 or the LM311 can be isolated from system ground, and the output can drive loads referred to ground, the positive supply or the negative supply. Offset balancing and strobe capability are provided and outputs can be wire ORed.

  • Operates from single 5V supply
  • Input current: 150 nA max. over temperature
  • Offset current: 20 nA max. over temperature
  • Differential input voltage range: ±30V
  • Power consumption: 135 mW at ±15V

Related Resources –

Voltage Comparator Information And Circuits

This page provides basic information about voltage comparator integrated circuits and is to act as reference material for other circuits. The circuits shown are based on the LM339 Quad Voltage Comparator chip or the LM393 Dual Voltage Comparator chip. These devices are functionally the same. The LM311 Voltage Comparator can be used for these applications as well but it also has a number of unique features.

Comparators and Schmitt Triggers

An LM311 in a comparator circuit is shown at the right, with the pin numbers for the connections. The open-collector output is at pin 7, and the ground for this transistor is at pin 1. It is shown pulled up to the logic voltage of +5 with a 1k resistor, which is typical. The output of the LM311 can sink 8 mA. A comparator’s output is essentially binary, YES or NO.

Designer and supplier of CDMA chipsets, system software, network base stations, handsets, modems

Qualcomm – Wireless and Portable Device Chips

Mobile processing performance, powerful multimedia, wireless connectivity and power efficiency. Enhanced ARM-based CPUs designed from the ground up to deliver unprecedented computing performance

Industry-leading levels of power optimization, allowing manufacturers to design slim yet powerful devices with all-day battery life. Integrated 3G mobile broadband for a rich Internet experience with full Web browsing.

Qualcomm Snapdragon Chipset

Smartbooks – New Class of Mobile Computing – “As powerful as a laptop, a smartbook lets you create or enjoy whatever you want while you’re on the go. Built-in 3G mobile broadband means you can connect at high speeds wherever your wireless coverage can reach”

Internet of Everything IoE Development Platform

Internet of Everything IoE Development Platform

“Everyday objects are readable, recognizable, locatable, addressable and controllable over the Internet. The IoE Development Platform offers hardware and software for designing and building IoE/machine-to-machine (M2M) devices with built-in cellular connectivity.”

The Internet of Everything Kit by Etherios featuring the Qualcomm QSC6270-Turbo chipset is an end-to-end wireless solution for software developers and systems integrators to test and develop IoE applications with cellular connectivity.

The CD4093B consists of four Schmitt-trigger circuits. Each circuit functions as a 2-input NAND gate with Schmitt-trigger action on both inputs. The gate switches at different points for positive and negative-going signals.

CD4093 – Quad 2-Input NAND Schmitt Trigger

The difference be-tween the positive (VTa) and the negative voltage (VTb)isdefined as hysteresis voltage (VH). All outputs have equal source and sink currents and con-form to standard B-series output drive.

CD4093 Quad NAND Schmitt Trigger

CD4093 is a very useful chip, as it has a Schmitt-trigger and it is a nand, cmos, low power.  It can be even made to function like an amp in some configurations. It was used in debouncing circuits, oscillator circuits and input signal conditioning of digital circuits.

DMM range and AC-DC mode Logic

If you had a train of square pulses from a magnetic sensor or proximity sensor. You could use this as a monostable or singleshot to reject noise and get a clean square wave from a messy input.