Rail-to-Rail Operational Amplifiers draw less than 1 mA.

Press Release Summary:

Models LT6220 single, LT6221 dual, and LT6222 quad rail-to-rail input and output precision op amps are rated at 60 MHz and can operate from supplies of 2.3-12.6 V. Characteristics include 350 µV max input offset voltage, 150 nA max input bias current, 82 dB CMRR, and 90 dB voltage gain. Devices have output current capability of 50mA for driving heavy loads. They are rated for 0 to 70°C (commercial) and -40 to +85°C (industrial) temperature ranges.

Original Press Release:

60MHz Rail-to-Rail Precision Op Amps Draw Less than 1mA

MILPITAS, CA - September 3, 2003 - Linear Technology Corporation announces the LT6220, LT6221 and LT6222 single, dual and quad rail-to-rail input and output precision op amps. Drawing less than 1mA per channel, these 60MHz op amps increase the operation time of wide bandwidth battery-powered systems without compromising performance. The LT6220/21/22 can operate from supplies as low as 2.3V and up to 12.6V, while the entire supply range is available because of the devices' rail-to-rail inputs and outputs. This increases overall performance by maximizing signal-to-noise ratio and dynamic range.

The LT6220/21/22 also offer excellent DC accuracy. With a maximum input offset voltage of 350uV, maximum input bias current of 150nA, CMRR of 82dB and voltage gain of 90dB, these devices have significantly better performance than other op amps with comparable bandwidth. Output current capability is 50mA for driving heavier loads, even with a low supply current of less than 1mA/amplifier. This unique blend of high speed and exceptional DC accuracy at low supply current makes these amplifiers a top choice for multitude of applications.

"The LT6220/21/22 have excellent overall performance, making them extremely versatile and suitable for use in a wide variety of applications," according to applications manager Tim Regan. "The combination of wide bandwidth and single supply (3V/5V) rail-to-rail operation makes them excellent candidates in low voltage, high frequency signal processing systems. The low power consumption (1mA/channel max) and miniature packaging makes them ideal for high density multi-channel applications where power and space are at a premium. Their excellent DC specs, unmatched by competition, allows use in precision instrumentation applications."

Fully specified over the commercial temperature range of 0 °C to 70 °C and industrial temperature range of -40 °C to 85 °C, the LT6220 single is offered in the 5-pin SOT23 and 8-pin SOIC packages. The LT6221 dual is available in the 8-pin SOIC and space saving 3mm x 3mm DFN package. The LT6222 quad is available in the 16-pin SSOP, which has the same footprint of an SO-8 package. Pricing starts at $1.20 each for the single, $1.85 each for the dual and $2.95 each for the quad in 1,000-piece quantities.

Summary of Features: LT6220

Gain Bandwidth Product: 60MHz

Low Supply Current: 1mA/Amplifier Max

Input Common Mode Range Includes Both Rails

Rail-to-Rail Output Swing

Low Voltage Operation: Single or Split Supplies 2.3V to 12.6V

Input Offset Voltage: 350 uV Max

Input Bias Current: 150nA Max

Slew Rate: 20V/us Typ

Low Voltage Noise: 10nV/ÃHz Typ

High Output Current: 50mA Typ

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.

Note: LT, AND LTC are registered trademarks of Linear Technology Corp.

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