Datasheet > ADA4859-3_16

ADA4859-3_16

更新时间： 2024-11-05 01:19:07

品牌	Logo	应用领域
亚德诺 - ADI		/
页数	文件大小	规格书
17页	425K
描述
Single-Supply, Fixed G = 2, High Speed, Video Amplifier with Charge Pump

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ADA4859-3_16 数据手册

Single-Supply, Fixed G = 2, High Speed,

Video Amplifier with Charge Pump

ADA4859-3

Data Sheet

FEATURES

CONNECTION DIAGRAM

ADA4859-3

Integrated charge pump

Supply range: 3 V to 5.5 V

Output range: −3.3 V to −1.8 V

50 mA maximum output current at −3 V for external use

High speed amplifiers

−3 dB bandwidth: 195 MHz

Slew rate: 740 V/µs

0.1 dB gain flatness: 60 MHz

0.1% settling time: 20 ns

Low power

Total quiescent current: 38 mA

Power-down feature

+IN2

11 –IN2

C1_a

C1_b

CPO

CHARGE

PUMP

10 OUT2

High input common-mode voltage range

−1.8 V to +3.8 V at +5 V supply

Current feedback architecture

Differential gain error: 0.01%

Differential phase error: 0.02°

Available in 16-lead LFCSP

NOTES

1. NC = NO CONNECT.

2. EXPOSED PAD, CONNECT TO GROUND.

Figure 1.

APPLICATIONS

Professional video

Consumer video

Imaging

Active filters

GENERAL DESCRIPTION

The ADA4859-3 (triple) is a single-supply, high speed current

feedback amplifier with an integrated charge pump that eliminates

the need for negative supplies in order to output negative voltages

or output a 0 V level for video applications. The 195 MHz, large

signal −3 dB bandwidth at a fixed gain of 2, as well as the 740 V/µs

slew rate, make this amplifier ideal for high resolution professional

and consumer video applications. The amplifier also has a wide

input common-mode voltage range that extends from 1.8 V

below ground to 1.2 V below the positive rail at 5 V supply.

This triple video amplifier is designed to operate on supply

voltages of 3.3 V to 5 V, using only 38 mA total quiescent

current, including the charge pump. To further reduce the

power consumption, it is equipped with a power-down feature

that lowers the total supply current to as low as 2 mA when the

amplifier is not being used. Even in power-down mode, the

charge pump can be used to power external components. The

maximum output current for external use is 50 mA at −3 V.

The ADA4859-3 is available in a 16-lead LFCSP, and it is designed

to work over the industrial temperature range of −40°C to +105°C.

Rev. A

Document Feedback

Information furnished by Analog Devices is believed to be accurate and reliable. However, no

responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other

rightsof third parties that may result fromits use. Specifications subject to change without notice. No

license is granted by implication or otherwise under any patent or patent rights of Analog Devices.

Trademarks andregisteredtrademarks are the property of their respective owners.

One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.

Technical Support

www.analog.com

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