1814 데이터 시트보기 (PDF) - Linear Technology

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1814

Dual/Quad 3mA, 100MHz, 750V/µs Operational Amplifiers

Linear Technology 

FEATURES

■ 100MHz Gain Bandwidth Product

■ 750V/µs Slew Rate

■ 3.6mA Maximum Supply Current per Amplifier

■ Tiny 3mm x 3mm x 0.8mm DFN Package

■ 8nV/√Hz Input Noise Voltage

■ Unity-Gain Stable

■ 1.5mV Maximum Input Offset Voltage

■ 4µA Maximum Input Bias Current

■ 400nA Maximum Input Offset Current

■ 40mA Minimum Output Current, VOUT = ±3V

■ ±3.5V Minimum Input CMR, VS = ±5V

■ 30ns Settling Time to 0.1%, 5V Step

■ Specified at ±5V, Single 5V Supplies

■ Operating TempeUrature Range: –40°C to 85°C

APPLICATIO S

■ Active Filters

■ Wideband Amplifiers

■ Buffers

■ Video Amplification

■ Communication Receivers

■ Cable Drivers

■ Data Acquisition Systems

LT1813/LT1814

Dual/Quad 3mA, 100MHz,

750V/µs Operational Amplifiers

DESCRIPTIO

The LT®1813/LT1814 are dual and quad, low power, high

speed, very high slew rate operational amplifiers with

excellent DC performance. The LT1813/LT1814 feature

reduced supply current, lower input offset voltage, lower

input bias current and higher DC gain than other devices

with comparable bandwidth. The circuit topology is a

voltage feedback amplifier with the slewing characteris-

tics of a current feedback amplifier.

The output drives a 100Ω load to ±3.5V with ±5V supplies.

On a single 5V supply, the output swings from 1.1V to 3.9V

with a 100Ω load connected to 2.5V. The amplifiers are

stable with a 1000pF capacitive load making them useful

in buffer and cable driver applications.

The LT1813/LT1814 are manufactured on Linear

Technology’s advanced low voltage complementary bipo-

lar process. The LT1813 dual op amp is available in

8-pin MSOP, SO and 3mm x 3mm low profile (0.8mm)

dual fine pitch leadless packages (DFN). The quad LT1814

is available in 14-pin SO and 16-pin SSOP packages. A

single version, the LT1812, is also available (see separate

data sheet).

, LTC and LT are registered trademarks of Linear Technology Corporation.

TYPICAL APPLICATIO

Bandpass Filter with Independently Settable Gain, Q and fC

R1

RG

VIN

RQ

–

1/4 LT1814

+

GAIN = R1

RG

Q = R1

RQ

fC

=

1

2πRFC

R

R

R

–

1/4 LT1814

+

C

RF

–

1/4 LT1814

+

C

RF

1/4 LT1814

1814 TA01

BANDPASS

OUT

Filter Frequency Response

R = 499Ω

0 R1 = 499Ω

RF = 475Ω

RQ = 49.9Ω

RG = 499Ω

C = 3.3nF

fC = 100kHz

Q = 10

GAIN = 1

VS = ±5V

VIN = 5VP-P

DISTORTION:

2nd < –76dB

3rd < –90dB

ACROSS FREQ

RANGE

1k

10k

100k

1M

10M

FREQUENCY (Hz)

1814 TA02

18134fa

1

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