LT1220 데이터 시트보기 (PDF) - Linear Technology

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LT1220

45MHz, 250V/µs Operational Amplifier

Linear Technology 

FEATURES

s Gain-Bandwidth: 45MHz

s Unity-Gain Stable

s Slew Rate: 250V/µs

s C-LoadTM Op Amp Drives Capacitive Loads

s Maximum Input Offset Voltage: 1mV

s Maximum Input Bias Current: 300nA

s Maximum Input Offset Current: 300nA

s Minimum Output Swing Into 500Ω: ±12V

s Minimum DC Gain: 20V/mV, RL = 500Ω

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

s Settling Time to 0.01%: 95ns, 10V Step

s Differential Gain: 0.1%, AV = 2, RL = 150Ω

s Differential Phase: 0.2°, AV = 2, RL = 150Ω

U

APPLICATIO S

s Wideband Amplifiers

s Buffers

s Active Filters

s Video and RF Amplification

s Cable Drivers

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

LT1220

45MHz, 250V/µs

Operational Amplifier

DESCRIPTIO

The LT®1220 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.

, LTC and LT are registered trademarks of Linear Technology Corporation

C-Load is a trademark of Linear Technology Corporation

TYPICAL APPLICATIO

Two Op Amp Instrumentation Amplifier

R5

R4

220Ω

10k

R1

R2

10k

1k

–

R3

1k

–

LT1220

–

+

VIN

LT1220

+

VOUT

+

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 • TA01

Inverter Pulse Response

RF = RG = 1k VIN = 20V

VS = ±15V f = 2MHz

LT1220 • TA02

1

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