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LT1222

500MHz, 3nV/

Operational Amplifier

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FEATURE

DESCRIPTIO

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Gain-Bandwidth: 500MHz

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Gain of 10 Stable Uncompensated

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Slew Rate: 200V/

µs

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Input Noise Voltage: 3nV/

√Hz

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C-Load

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External Compensation Pin

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Maximum Input Offset Voltage: 300

µV

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Maximum Input Bias Current: 300nA

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Maximum Input Offset Current: 300nA

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Minimum Output Swing Into 500

Ω: ±12V

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Settling Time to 0.1%: 75ns, 10V Step

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Settling Time to 0.01%: 120ns, 10V Step

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Differential Phase: 0.1

The LT1222 is a low noise, very high speed operational

amplifier with superior DC performance. The LT1222 is

stable in a noise gain of 10 or greater without compensa-

tion, or the part can be externally compensated for lower

closed-loop gain at the expense of lower bandwidth and

slew rate. It features reduced input offset voltage, lower

input bias currents, lower noise and higher DC gain than

devices with comparable bandwidth and slew rate. The

circuit is a single gain stage that includes proprietary DC

gain enhancement circuitry to obtain precision with high

speed. The high gain and fast settling time make the circuit

an ideal choice for data acquisition systems. The circuit is

also capable of driving capacitive loads which makes it

useful in buffer or cable driver applications. The compen-

sation node can also be used to clamp the output swing.

The LT1222 is a member of a family of fast, high perfor-

mance amplifiers that employ Linear Technology

Corporation’s advanced complementary bipolar process-

ing. For unity-gain stable applications the LT1220 can be

used, and for gains of 4 or greater the LT1221 can be used.

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APPLICATI

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Wideband Amplifiers

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Buffers

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Active Filters

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Video and RF Amplification

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Cable Drivers

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8-, 10-, 12-Bit Data Acquisition Systems

LT1222 • TA02

LT1222 • TA01

LT1222

1N5711

1N5711

 V

909

Ω

100

Ω

+

–

1N4148

0.1

µF

5

6

3

2

3k

15V

f = 5MHz

and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation.

C-Load is a trademark of Linear Technology Cortporation.