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LT1818/LT1819

18189f

400MHz, 2500V/

µs, 9mA

Single/Dual Operational Amplifiers

s

400MHz Gain Bandwidth Product

s

2500V/

s

–85dBc Distortion at 5MHz

s

9mA Supply Current Per Amplifier

s

Space Saving SOT-23 and MS8 Packages

s

6nV/

√Hz Input Noise Voltage

s

Unity-Gain Stable

s

1.5mV Maximum Input Offset Voltage

s

8

µA Maximum Input Bias Current

s

800nA Maximum Input Offset Current

s

s

s

Specified at

±5V, Single 5V Supplies

s

Operating Temperature Range: – 40

°C to 85°C

s

Wideband Amplifiers

s

Buffers

s

Active Filters

s

Video and RF Amplification

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Communication Receivers

s

Cable Drivers

s

Data Acquisition Systems

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

The LT

high slew rate, low noise and distortion operational ampli-

fiers with excellent DC performance. The LT1818/LT1819

have been designed for wider bandwidth and slew rate,

much lower input offset voltage and lower noise and

distortion than devices with comparable supply current.

The circuit topology is a voltage feedback amplifier with

the excellent slewing characteristics of a current feedback

amplifier.

The output drives a 100

Ω load to ±3.8V with ±5V supplies.

On a single 5V supply, the output swings from 1V to 4V

with a 100

Ω load connected to 2.5V. The amplifier is unity-

gain stable with a 20pF capacitive load without the need for

a series resistor. Harmonic distortion is –85dBc up to

The LT1818/LT1819 are manufactured on Linear

Technology’s advanced low voltage complementary bipo-

lar process. The LT1818 (single op amp) is available in

SOT-23 and SO-8 packages; the LT1819 (dual op amp) is

available in MSOP-8 and SO-8 packages.

–

+

LT1818

2.5VDC

±1VAC

18189 TA01

18pF

2.5V

51.1

Ω

5V

5V

+

LTC1744

14 BITS

50Msps

FULL SCALE)

–

Single Supply Unity-Gain ADC Driver for Oversampling Applications

FREQUENCY (Hz)

0

–10

–20

–30

–40

–50

–60

–70

–80

–90

–100

–110

0

18189 TA02

5M

10M

15M

20M

25M

SFDR = 78dB

8192 POINT FFT

NO WINDOWING

OR AVERAGING

2

3

FFT of Single Supply ADC Driver

APPLICATIO S

FEATURES

TYPICAL APPLICATIO

DESCRIPTIO