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LT1220

45MHz, 250V/

µs

Operational Amplifier

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FEATURE

DESCRIPTIO

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Gain-Bandwidth: 45MHz

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Unity-Gain Stable

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Slew Rate: 250V/

µs

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C-Load

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Maximum Input Offset Voltage: 1mV

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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%: 95ns, 10V Step

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Differential Phase: 0.2

The LT1220 is a high speed operational amplifier with

superior DC performance. The LT1220 features reduced

input offset voltage, lower input bias currents 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 pre-

cision 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 large

capacitive loads which makes it useful in buffer or cable

driver applications.

The LT1220 is a member of a family of fast, high perfor-

mance amplifiers that employ Linear Technology

Corporation’s advanced complementary bipolar process-

ing. For applications with gains of 4 or greater the LT1221

can be used, and for gains of 10 or greater the LT1222 can

be used for increased bandwidth.

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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

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APPLICATI

Two Op Amp Instrumentation Amplifier

Inverter Pulse Response

LT1220 • TA02

f = 2MHz

+

–

LT1220

GAIN = [R4/R3][1 + (1/2)(R2/R1 + R3/R4) + (R2 + R3)/R5] = 102

TRIM R5 FOR GAIN

TRIM R1 FOR COMMON-MODE REJECTION

BW = 450kHz

LT1220

LT1220 • TA01

R3

1k

R5

220

Ω

R4

10k

R2

1k

R1

10k

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

C-Load is a trademark of Linear Technology Cortporation.