Datasheet > LT1464_15

LT1464_15

更新时间： 2022-02-26 13:11:53

品牌	Logo	应用领域
凌特 - Linear		/
页数	文件大小	规格书
12页	283K
描述
Dual/Quad Micropower, 1MHz C-Load Picoampere Bias Current JFET Input Op Amps

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LT1464_15 数据手册

LT1464/LT1465

Dual/Quad Micropower,

1MHz C-Load Picoampere

Bias Current JFET Input Op Amps

FEATURES

DESCRIPTION

The LT^®1464 (dual) and LT1465 (quad) are the first

micropower op amps (200µA max per amp) to offer

picoampereinputbiascurrents(500fAtyp)andunity-gain

stability for capacitive loads up to 10nF. The output can

swing a 10k load to within 1.5V of either supply, just like

op amps that require an order of magnitude more supply

current. This unique combination of performance makes

the LT1464/LT1465 ideal over a wide range of input and

output impedances.

■

Input Bias Current:

2pA Max (LT1464A)

20pA Max (LT1464, LT1465)

■

Supply Current per Amplifier: 200µA Max

■

Gain Bandwidth Product: 1MHz Typ

Slew Rate: 0.9V/µs Typ

Input Common Mode Range Includes Positive Rail

Unity-Gain Stable for C-Load^TMUp to 10nF

Open-Loop Gain: 1 Million Typ

Guaranteed Specs with ±5V, ±15V Supplies

Guaranteed Matching Specifications

Standard Pinout: SO-8, SO-14 Package

■

In the design and testing of the LT1464/LT1465, particular

emphasis has been placed on optimizing performance in

thelowcostSO-8(dual)and14-leadSO(quad)packagefor

±15V and ±5V supplies. The input common mode range

includes the positive rail. Slew rate (0.5V/µs min) and gain

bandwidth product (650kHz min) are 100% tested. A full

set of matching specifications is also provided.

APPLICATIONS

■

Battery-Powered Systems

Photocurrent Amplifiers

Low Frequency, Micropower Active Filters

Low Droop Track-and-Hold Circuits

■

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

C-Load is a trademark of Linear Technology Corporation.

■

TYPICAL APPLICATION

Micropower Low Droop Track-and-Hold/Peak Detector

1/4 LTC201 13

Small-Signal Response, C_LOAD= 10nF

10nF

POLYSTYRENE

MCT2

–

R1*

1/2 LT1464

OUT

MCT2

–

LT1464 • TA01

1/4 LTC201

0.5pA

10nF

TYPICAL DROOP =

= 0.05mV/s

1464 • TA02

TOTAL SUPPLY CURRENT = 46µ0A MAX

R1 = 60Ω0 FOR ±15V SUPPLIES

R1 = Ω0 FOR ±5V SUPPLIES

A_V= 1

_S= ±5V, ±15V

C_L= 10nF

FUNCTION

Track-and-Hold

Positive Peak Detector Reset

Negative Peak Detector Reset

LTC201 switch is open for logic "1".

MODE

Track

IN A

IN B

MODE IN A

IN B

Hold

Store

12 3 4 5 6 7...12

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