The TSL2562 and TSL2563 Light-to-Digital Converters from TAOS combines a broadband photodiode (350 nm to 1100 nm) with a visible light blocking photodiode in a single CMOS integrated circuit. With integrated analog-to-digital conversion circuitry, data is output via a serial interface using I2C standard protocol.

For more information please use the links to the right

Features

• Low 2.5-V Input Voltage and 1.8-V Digital Output
• Approximates Human eye Response
• Precisely Measures Illuminance in Diverse Lighting Conditions
• Programmable Interrupt Function with User Defined Upper and Lower Threshold Settings
• 16-Bit Digital Output with SMSBus
• Programmable Analog Gain and Integration Time
• Supporting 1,000,000-to-1 Dynamic Range
• Available in Ultra-Small 1.25mm x 1.75mm Chipscale Package

Description

The TSL2562 and TSL2563 are low-voltage light-to-digital converters that transform light intensity to a digital signal output. Each device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode operating from a single 2.5V supply and is capable of providing a near-photopic response over an effective 20-bit dynamic range (16-bit resolution).

Two integrating ADCs convert the photodiode currents to a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response.

While useful for general purpose light sensing applications, the TSL2562/63 devices are designed particularly for display panels (LCD, OLED, etc.) with the purpose of extending battery life and providing optimum viewing in diverse lighting conditions. Display panel backlighting, which can account for up to 30 to 40 percent of total platform power, can be automatically managed.

Use the links below to view all of the TAOS light-sensing products as well as their data sheets:

· The TAOS family of intelligent opto sensors includes:

o Light-to-Voltage Sensors
Low-cost, photodiode with integrated transimpedance amplifier delivering linear analog voltage output

o Light-to-Frequency Sensors
Large input dynamic range measuring light intensity with pulse train or square wave digital output

o Linear Sensor Arrays
Spatial relationship optical sensor for imaging, encoding or edge detection with high linearity and uniformity

o Light to Digital Sensors
Digital light level measurement in units of lux approximating the human eye response

o Color Sensors
RGB filtered sensors for color discrimination, determination, and measurement.

About Texas Advanced Optoelectronic Solutions (TAOS), Inc. : Shaping the Future of Light Sensing Solutions

Texas Advanced Optoelectronic Solutions, Incorporated (TAOS) is based in Plano, Texas (a suburb of Dallas). Established in 1998, the company mission is "To Redefine Optoelectronic Solutions to Provide Cost and Performance Advantages by Creating and Managing Technology."

Historically, applications that require the sensing of light stimulus to execute a function have been implemented by either a photodiode or phototransistor – neither of which support the emerging needs for higher performance optical sensor-based applications.

Utilizing state-of-the-art technology, our semiconductor devices combine precision mixed-signal functionality with photo-detectors on the same integrated circuit to produce products with performance and cost advantages over conventional solutions. TAOS's intelligent opto sensors simplify the measurement and analog-to-digital conversion of light, and are designed to reduce the need for signal conditioning or pre-processing circuitry in light-centric systems. Our light sensing solutions improve system performance and reduce design-cycle time giving designers the flexibility and performance they require at an attractive system cost.

Light to Digital ALS Converters from Texas Advanced Optoelectronic Solutions (TAOS), Inc.

TAOS Inc's Light - to- Digital Converters combine a broadband photodiode (350 nm to 1100 nm) with a visible light blocking photodiode in a single CMOS integrated circuit. With integrated analog-to-digital conversion circuitry, data is output via a serial interface using SMBus standard protocol.

• Click here for more informaton on the TSL2561 - LIGHT TO DIGITAL ALS Converter...
• Click here for additional information on all our LIGHT TO DIGITAL PRODUCTS...
• Any questions - email us at: sales@taosinc.com

The TSL2560 is a light-to-digital converter that transform light intensity to a digital signal output capable of direct SMBus interface. The device combines one broadband photodiode (visible plus infrared) and one infrared-responding photodiode on a single CMOS integrated circuit capable of providing a near-photopic response over an effective 20-bit dynamic range (16-bit resolution). Two integrating ADCs convert the photodiode currents to a digital output that represents the irradiance measured on each channel. This digital output can be input to a microprocessor where illuminance (ambient light level) in lux is derived using an empirical formula to approximate the human eye response. The TSL2560 device permits an SMB-Alert style interrupt that remains asserted until the firmware clears it.

Features

• Approximates Human eye Response
• Precisely Measures Illuminance in Diverse Lighting Conditions
• Programmable Interrupt Function with User Defined Upper and Lower Threshold Settings
• 16-Bit Digital Output with SMSBus
• Programmable Analog Gain and Integration Time
• Supporting 1,000,000-to-1 Dynamic Range
• Available in Ultra-Small 1.25mm x 1.75mm Chipscale Package

Use the links below to view all of the TAOS light-sensing products as well as their data sheets:

The TAOS family of intelligent opto sensors includes:

• Light-to-Voltage Sensors
  Low-cost, photodiode with integrated transimpedance amplifier delivering linear analog voltage output
• Light-to-Frequency Sensors
  Large input dynamic range measuring light intensity with pulse train or square wave digital output
• Linear Sensor Arrays
  Spatial relationship optical sensor for imaging, encoding or edge detection with high linearity and uniformity
• Light to Digital Sensors
  Digital light level measurement in units of lux approximating the human eye response
• Color Sensors
  RGB filtered sensors for color discrimination, determination, and measurement.

About Texas Advanced Optoelectronic Solutions (TAOS), Inc. : Shaping the Future of Light Sensing Solutions

Texas Advanced Optoelectronic Solutions, Incorporated (TAOS) is based in Plano, Texas (a suburb of Dallas). Established in 1998, the company mission is "To Redefine Optoelectronic Solutions to Provide Cost and Performance Advantages by Creating and Managing Technology."

Historically, applications that require the sensing of light stimulus to execute a function have been implemented by either a photodiode or phototransistor – neither of which support the emerging needs for higher performance optical sensor-based applications.

Utilizing state-of-the-art technology, our semiconductor devices combine precision mixed-signal functionality with photo-detectors on the same integrated circuit to produce products with performance and cost advantages over conventional solutions. TAOS's intelligent opto sensors simplify the measurement and analog-to-digital conversion of light, and are designed to reduce the need for signal conditioning or pre-processing circuitry in light-centric systems. Our light sensing solutions improve system performance and reduce design-cycle time giving designers the flexibility and performance they require at an attractive system cost.

ACCES I/O Products introduces its PCI-DA12 series of digital-to-analog converter cards for PCI Bus computers. The low-cost, half-size converter cards are available with two (PCI-DA12-2), four (PCI-DA12-4), or six (PCI-DA12-6) double-buffered, analog outputs with 12-bit resolution. Output voltages include standard 0–2.5V, 0–5V and 0–10V ranges, as well as ±2.5V, ±5V and ±10V bipolar outputs. A 4-20mA current loop output may also be selected.

The voltage output range is selected using a three-position DIP switch associated with each DAC channel. Selection for voltage or current output is also (jumper) selectable for each channel, and outputs may be updated either independently or simultaneously. To prevent spurious outputs at power-up, DAC outputs are set to less than 15% of span by automatically restricting the reference voltage and setting the card to simultaneous update mode. After all DACs have been loaded with the desired values, a software command can be used to switch the reference voltage to its normal value. A software command can also be used at any time to lower the reference voltage and reset all DAC outputs to 15% of their programmed value.

PCI-DA12 series cards measure only 6 inches (152.4 mm) long and may be installed in any IBM-compatible computer's 5V PCI slot. Each card comes with a CD-ROM containing set-up and calibration programs, samples in Pascal and C for DOS, C++ Builder, Delphi, VisualBASIC, and Visual C++ for Windows 95/98 and NT. Utility software titled ACCES32 contains a Windows 95/98/NT DLL driver for accessing hardware registers when writing 32-bit Windows software. Several samples are provided in a variety of languages to demonstrate use of this driver.

ACCES I/O Products, a leading manufacturer of IBM-compatible analog and digital I/O boards, remote data acquisition products and accessories, offers over 30 models in its line of PCI bus data acquisition cards. All come with a 30-day, no-risk return policy and a three-year warranty. For further information, visit the company's web site.

The V450 is a VME 16-channel isolated analog-to-digital converter module which can acquire a wide range of DC voltages, including thermocouple temperatures. Each channel is independent with an isolated DC power supply, optoisolated interface, A/D converter, signal conditioning, input protection circuits, and test relay.

An internal microprocessor manages all data I/O and communicates with the VME bus via a transparent, VMEbus-speed dual-port memory.

Each channel may be user programmed to operate in voltage-input or thermocouple acquisition mode. In each mode, channel operating parameters, acquired measurements, and status flags are accessible in dedicated VME registers. Data rate/filtering options are provided. Data acquisition is managed autonomously by the processor, so VME masters may set channel parameters or read acquired measurements at any time at full VMEbus speed. Any channel can be associated with any of the reference junction sensors located in the external field-wiring termination panels, or can use the on-board sensor. Cold-junction compensation is via table lookup of thermocouple potential for the type currently selected. Reference junction temperatures are readable.

For more information please use the links to the right

The TSL2550 is a digital light sensor with a two-wire, SMBus serial interface. It combines two photodiodes and a companding analog-to-digital converter (ADC) on a single CMOS integrated circuit to provide light measurements over an effective 12-bit dynamic range.

The TSL2550 is designed for use with broad wavelength light sources. One of the photodiodes (Channel 0) is sensitive to visible and infrared light, while the second photodiode (Channel 1) is sensitive primarily to infrared light. An integrating ADC converts the photodiode currents to Channel 0 and Channel 1 digital outputs. Channel 1 digital output is used to compensate for the effect of the infrared component of ambient light on Channel 0 digital output. The ADC digital outputs of the two channels are used to obtain a value that approximates the human eye response in the commonly used unit of Lux.

Use the links below to view all of the TAOS light-sensing products as well as their data sheets:

· The TAOS family of intelligent opto sensors includes:

o Light-to-Voltage Sensors
Low-cost, photodiode with integrated transimpedance amplifier delivering linear analog voltage output

o Light-to-Frequency Sensors
Large input dynamic range measuring light intensity with pulse train or square wave digital output

o Linear Sensor Arrays
Spatial relationship optical sensor for imaging, encoding or edge detection with high linearity and uniformity

o Light to Digital Sensors
Digital light level measurement in units of lux approximating the human eye response

o Color Sensors
RGB filtered sensors for color discrimination, determination, and measurement.

About Texas Advanced Optoelectronic Solutions (TAOS), Inc. : Shaping the Future of Light Sensing Solutions

Texas Advanced Optoelectronic Solutions, Incorporated (TAOS) is based in Plano, Texas (a suburb of Dallas). Established in 1998, the company mission is "To Redefine Optoelectronic Solutions to Provide Cost and Performance Advantages by Creating and Managing Technology."

Historically, applications that require the sensing of light stimulus to execute a function have been implemented by either a photodiode or phototransistor – neither of which support the emerging needs for higher performance optical sensor-based applications.

Utilizing state-of-the-art technology, our semiconductor devices combine precision mixed-signal functionality with photo-detectors on the same integrated circuit to produce products with performance and cost advantages over conventional solutions. TAOS's intelligent opto sensors simplify the measurement and analog-to-digital conversion of light, and are designed to reduce the need for signal conditioning or pre-processing circuitry in light-centric systems. Our light sensing solutions improve system performance and reduce design-cycle time giving designers the flexibility and performance they require at an attractive system cost.

ACCES I/O Products announces the immediate release of its newest PC/104 board for data acquisition, control and test and measurement. The high-speed Model 104-AIO16-16 provides 500KHz samples/second, with 16-bit resolution, for the board's 16 single-ended or eight true differential analog input channels. The 104-AIO16-16 multifunction I/O board features an excellent price/performance value for precision PC/104-based data acquisition, control or signal analysis of stand-alone environmental test stations, compact production test equipment, portable testers, avionics and other applications.

The low-cost 104-AIO16-16 features 11 standard analog input ranges and a filtered, extremely quiet front end populated with low-noise components. In addition to direct data transfers, the board's ability to trigger the A/D in real time assures synchronized sampling that is unaffected by other computer operations—an essential requirement for signal, vibration and transient analysis where high data rates must be sustained for short periods of time. Sixteen parallel bits of digital I/O round out the mix for a complete, high-performance data acquisition solution.

Other features of the Model 104-AIO16-16 include:

· Factory input range/gain options available

· Large input data FIFO for less processor overhead

· EEPROM auto calibration

· Dual 12-Bit digital-to-analog outputs

· Power requirement: +5V @ 240mA, typical w/ DC/DC converter

· Extended operating temperature range: –40C to +85C

An included free software package supports analog-to-digital and digital-to-analog conversion with auto calibration, digital functions with sample programs and source code in "C" and Pascal for DOS, and a graphical option selection setup program in Windows. Linux support includes basic samples for register-level programming in "C." Full 95/98/Me/NT/2000/Xp support and samples are provided for register-level access to the board's features, as well as kernel mode IRQ operations.

ACCES I/O Products, Inc. is a leading manufacturer of PC/104, PCI and ISA analog and digital/relay I/O boards, serial communication products and wireless/remote data acquisition products and accessories. Other PC/104 boards from ACCES include 48-bit digital I/O, 12-Bit A/D & D/A, isolated input/relay output boards (8 or 16 each), and isolated and non-isolated serial communications boards. All hardware comes with a 30-day, no-risk return policy and a three-year warranty. For further information, visit the company's web site.