Datasheet > ADA4350ARUZ

ADA4350ARUZ

更新时间： 2024-11-23 14:37:35

品牌	Logo	应用领域
亚德诺 - ADI		光电二极管转换器
页数	文件大小	规格书
38页	795K
描述
FET Input Analog Front End with ADC Driver

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ADA4350ARUZ 数据手册

FET Input Analog Front End

with ADC Driver

Data Sheet

ADA4350

FEATURES

GENERAL DESCRIPTION

Low noise, low input bias current FET input amplifier

Very low input bias current: 0.25 pA typical at 25°C

Low input voltage noise

92 nV/√Hz typical at 10 Hz at 5 V

5 nV/√Hz typical at 100 kHz at 5 V

Gain bandwidth product: 175 MHz

The ADA4350 is an analog front end for photodetectors or other

sensors whose output produces a current proportional to the

sensed parameter or voltage input applications where the system

requires the user to select between very precise gain levels to

maximize the dynamic range.

The ADA4350 integrates a FET input amplifier, a switching network,

and an ADC driver with all functions controllable via a serial

peripheral interface (SPI) or parallel control logic into a single

IC. The FET input amplifier has very low voltage noise and current

noise making it an excellent choice to work with a wide range of

photodetectors, sensors, or precision data acquisition systems.

Input capacitance

3 pF typical, differential mode

2 pF typical, common mode

Integrated gain switching

Sampling and feedback switch off leakage: 0.5 pA typical

Worst case t_ON/t_OFFtimes: 105 ns typical/65 ns typical

Integrated analog-to-digital converter (ADC) driver

Differential mode and single-ended mode

Adjustable output common-mode voltage

−5 V to +3.8 V typical for 5 V supply

Wide output voltage swing: 4.8 V minimum for 5 V supply

Linear output current: 18 mA rms typical for 5V supply

SPI or parallel switch control of all functions

Wide operating range: 3.3 V to 12 V

Its switching network allows the user individual selection of up

to six different, externally configurable feedback networks; by

using external components for the feedback network, the user

can more easily match the system to their desired photodetector or

sensor capacitance. This feature also allows the use of low thermal

drift resistors, if required.

The design of the switches minimizes error sources so that they

add virtually no error in the signal path. The output driver can

be used in either single-ended or a differential mode and is

ideal for driving the input of an ADC.

Quiescent current: 8.5 mA typical ( 5 V full system)

APPLICATIONS

Current to voltage (I to V) conversions

Photodiode preamplifiers

Chemical analyzers

Mass spectrometry

Molecular spectroscopy

Laser/LED receivers

The ADA4350 can operate from a single +3.3 V supply or a dual

5 V supply, offering user flexibility when choosing the polarity of

the detector. It is available in a Pb-free, 28-lead TSSOP package and

is specified to operate over the −40°C to +85°C temperature range.

Multifunction pin names may be referenced by their relevant

function only.

Data acquisition systems

FUNCTIONAL BLOCK DIAGRAM

ADA4350

VOUT1

IN-N

IN-P 11

S10

S11

26 VOUT2

SPI INTERFACE

16 17 19 20 21 22 23

FET AMP

SWITCHING NETWORK

ADC DRIVER

Figure 1.

Rev. B

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

12 3 4 5 6 7...38

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ADA4350ARUZ 替代型号

型号	品牌	替代类型	描述	数据表
ADA4350ARUZ-R7	ADI	完全替代	FET Input Analog Front End with ADC Driver

与ADA4350ARUZ相关器件

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ADA4350ARUZ-R7	ADI	获取价格	FET Input Analog Front End with ADC Driver
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ADA4410-6	ADI	获取价格	Integrated Video Filter with Selectable Cutoff Frequencies for RGB, HD/SD Y, C, and CV
ADA4410-6ACPZ-R2	ADI	获取价格	Integrated Video Filter with Selectable Cutoff Frequencies for RGB, HD/SD Y, C, and CV
ADA4410-6ACPZ-R7	ADI	获取价格	Integrated Video Filter with Selectable Cutoff Frequencies for RGB, HD/SD Y, C, and CV
ADA4410-6ACPZ-RL	ADI	获取价格	Integrated Video Filter with Selectable Cutoff Frequencies for RGB, HD/SD Y, C, and CV
ADA4411-3	ADI	获取价格	Integrated Triple Video Filter and Buffer with Selectable Cutoff Frequencies and Multiplex
ADA4411-3ARQZ	ADI	获取价格	Integrated Triple Video Filter and Buffer with Selectable Cutoff Frequencies and Multiplex
ADA4411-3ARQZ-R7	ADI	获取价格	Integrated Triple Video Filter and Buffer with Selectable Cutoff Frequencies and Multiplex

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