Operational Amplifiers suit high speed, low-voltage designs.
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Press Release Summary:
Single, dual, and quad rail-to-rail input and output models (LT1803, LT1804, and LT1805, respectively) offer 85 MHz gain-bandwidth product and 100 V/µs slew rate. Voltage feedback op amps draw 3 mA supply current and offer minimum open loop gain of 86 dB and CMRR of over 78 dB. Products operate from supplies from 2.3-12.6 V. Model LT1803 is offered in 5-pin SOT23 and 8-pin SOIC packages, LT1804 comes in 8-pin SOIC and 3 x 3 DFN packages, and LT1805 comes in 14-pin SOIC package.
Original Press Release:
Low Power Rail-to-Rail Op Amps Bring High Speed to Low Voltage Designs
MILPITAS, CA - July 29, 2003 - Linear Technology Corporation announces the release of LT1803, LT1804 and LT1805 single, dual and quad rail-to-rail input and output low power op amps. Featuring high speed performance, 85MHz gain-bandwidth product and 100V/us slew rate, these voltage feedback op amps combine the extra speed new designs require with low voltage single supply operation. Drawing just 3mA supply current, the devices' rail-to-rail inputs and outputs provide the user with a wide dynamic range desirable in low voltage applications. The LT1803/04/05 make excellent candidates for high frequency low voltage signal conditioning and data acquisition systems.
"The LT1803/04/05 amplifiers have been designed to target the needs of high speed designs that are migrating to lower supply voltages," according to design manager, Bill Jett. "They are also suitable for designs that require large signal amplification while maintaining low power consumption. The 100V/us slew rate ensures that large peak-to-peak output swings can be maintained even at higher speeds. The low distortion, -75dBc with a 2Vp-p 1MHz signal and the fast settling time ensure excellent signal quality through its wide bandwidth".
The LT1803, LT1804 and LT1805 do not compromise DC performance for high speed low voltage operation. The DC accuracy is better than any competitive op amp with a similar bandwidth. The minimum open loop gain of 86dB ensures excellent gain linearity while the CMRR of over 78dB reduces errors due to common mode signals. This combination of features makes these devices ideal for use as buffer amplifiers, active filters, ADC drivers, I/V converters and laser drivers.
The LT1803, LT1804 and LT1805 can operate from supplies as low as 2.3V and up to 12.6V. Fully specified over the commercial temperature range of 0°C to 70°C and industrial temperature range of -40°C to 85°C, the LT1803 single is offered in the 5-pin SOT23 and 8-pin SOIC packages. The LT1804 dual is available in the 8-pin SOIC and ultra compact 3mm x 3mm DFN package. The LT1805 quad is available in the 14-pin SOIC package. Pricing starts at $1.30 each for the single, $1.95 each for the dual and $3.50 each for the quad in 1,000-piece quantities.
Summary of Features: LT1803, LT1804 & LT1805
Slew Rate: 100V/us
Gain Bandwidth Product: 85MHz
Input Common Mode Range Includes Both Rails
Output Swings Rail-to-Rail
Low Quiescent Current: 3mA Max per Amplifier
Large Output Current: 42mA Typ
Voltage Noise: 21nV/rtHz Typ
Power Supply Rejection: 90dB Typ
Open-Loop Gain: 60V/mV Typ
Operating Temperature Range: -40°C to 85°C
Single Available in 5-Pin SOT-23 and 8-Lead SO Packages
Dual Available in 8-Lead DFN and SO Packages
Quad Available in 14-Pin Narrow SO Package
Company Background
Linear Technology Corporation was founded in 1981 as a manufacturer of high performance linear integrated circuits. Linear Technology products include operational, instrumentation and audio amplifiers; voltage regulators,power management devices, DC-DC converters and voltage references; comparators; monolithic filters; communications interface circuits; one-chip data acquisition sub-systems; pulse-width modulators and sample-and-hold devices; and high frequencydevices. Applications for Linear Technology's high performance circuits include wireless and broadband telecommunications infrastructure, cellular telephones, networking products and satellite systems, notebook and desk top computers, computer peripherals, video/multimedia, industrial and medical instrumentation, automotive electronics, factory automation, process control, military and space systems, and high-end consumer products including digital cameras, MP3 players and other electronic products.
READER SERVICE: Call toll-free 1-800-4-LINEAR (for literature only), or go to the company's web site: www.linear.com
Note: LT, AND LTC are registered trademarks of Linear Technology Corp.
