Datasheet > LT1219LCN8

LT1219LCN8

更新时间： 2024-01-18 04:12:51

品牌	Logo	应用领域
凌特 - Linear		运算放大器
页数	文件大小	规格书
16页	378K
描述
Precision Rail-to-Rail Input and Output Op Amps

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LT1219LCN8 数据手册

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-railinputandoutputoperationwithprecisionspeci-

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.

■

Rail-to-Rail Input and Output

90µ

V V_OS(MAX)for V_CM= V^–to V⁺

■

High Common Mode Rejection Ratio: 97dB Min

C-Load^TMStable 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_S< 30µA

Low Supply Current: 420µA Max

Low Input Bias Current: 18nA Typical

300kHz Gain-Bandwidth Product (LT1218)

Slew Rate: 0.10V/µs (LT1218)

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.

APPLICATIONS

■

Driving A/D Converters

Test Equipment Amplifiers

MUX Amplifiers

■

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.

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

C-Load is a trademark of Linear Technology Corporation.

TYPICAL APPLICATION

MUX Amplifier

Voltage Follower Input to Output Error

= 5V

= 1

NO LOAD

IN1

LT1218L

OUT

1.0

0.1

–

SHDN

MAX ERROR = 110µV

0.05V ≤ V ≤ 4.8V

–

IN2

LT1218L

MAXIMUM IN

TO OUT ERROR

= 110µV FOR

SHDN

0.01

0.05

4.95

0.05V ≤ V ≤ 4.8V

INPUT VOLTAGE (V)

= 10k

INPUT

LT1218/19 • TA02

SELECT

1218/19 • TA01

74HCO4

12 3 4 5 6 7...16

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