LT1218_15 datasheet, PDF - EEWORLD Datasheet

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LT1218_15: DescriptionPrecision Rail-to-Rail Input and Output Op Amps; File Size314KB，16 Pages; ManufacturerLinear ( ADI ); Websitehttp://www.analog.com/cn/index.html

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LT1218_15 Overview

Precision Rail-to-Rail Input and Output Op Amps

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LT1218/LT1219

Precision Rail-to-Rail Input

and Output Op Amps

FEATURES

DESCRIPTION

The LT

1218/LT1219 are bipolar op amps which combine

rail-to-rail input and output operation with precision speci-

fications. Unlike other rail-to-rail amplifiers, the LT1218/

LT1219’s input offset voltage is a low 90µV across the

entire rail-to-rail input range, not just a portion of it. Using

a patented technique, both input stages of the LT1218/

LT1219 are trimmed: one at the negative supply and the

other at the positive supply. The resulting common mode

rejection of 97dB minimum is much better than other rail-

to-rail input op amps. A minimum open-loop gain of

500V/mV into a 10k load virtually eliminates all gain error.

The LT1218 has conventional compensation which

assures stability for capacitive loads of 1000pF or less.

The LT1219 has compensation that requires the use of a

0.1µF output capacitor, which improves the amplifier’s

supply rejection and reduces output impedance at high

frequencies. The output capacitor’s filtering action also

reduces high frequency noise, which is beneficial when

driving A/D converters.

High and low voltage versions of the devices are offered.

Operation is specified for 3V, 5V and

±5V

supplies for the

LT1218L/LT1219L and 3V, 5V and

±15V

for the LT1218/

LT1219.

Rail-to-Rail Input and Output

V V

OS(MAX)

for V

= V

–

to V

High Common Mode Rejection Ratio: 97dB Min

C-Load

Stable Version (LT1219)

High A

VOL

: 500V/mV Minimum Driving 10kΩ Load

Wide Supply Range:

2V to

±15V

(LT1218/LT1219)

2V to

±5V

(LT1218L/LT1219L)

Shutdown Mode: I

< 30µA

Low Supply Current: 420µA Max

Low Input Bias Current: 18nA Typical

300kHz Gain-Bandwidth Product (LT1218)

Slew Rate: 0.10V/µs (LT1218)

APPLICATIONS

Driving A/D Converters

Test Equipment Amplifiers

MUX Amplifiers

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

C-Load is a trademark of Linear Technology Corporation.

TYPICAL APPLICATION

MUX Amplifier

IN1

Voltage Follower Input to Output Error

= 5V

= 1

NO LOAD

OUT

LT1218L

–

SHDN



ERROR



(mV)

1.0

IN2

0.1

LT1218L

–

INPUT

SELECT

74HCO4

SHDN

MAXIMUM IN

TO OUT ERROR

= 110µV FOR

0.05V

≤

4.8V

= 10k

0.01

0.05

4.95

INPUT VOLTAGE (V)

LT1218/19 • TA02

1218/19 • TA01

MAX ERROR = 110µV

0.05V

≤

4.8V

LT1218_15 Related Products

	LT1218_15	LT1219_15
Description	Precision Rail-to-Rail Input and Output Op Amps	Precision Rail-to-Rail Input and Output Op Amps

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