Datasheet > TPA8801B

TPA8801B

更新时间： 2024-11-25 17:01:35

品牌	Logo	应用领域
思瑞浦 - 3PEAK		/
页数	文件大小	规格书
8页	463K
描述
Current Sensor Interface for Optical Dust Sensor

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中文翻译

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TPA8801B 数据手册

TPA8801B

3PEAK

High Sensitivity Current Input Interface

Features

Description

◼

Ideal DC gain when Rg=20K: 4.56GΩ

One resister(Rg) to set the gain

Supply voltage range: 2.1-5.5V

Iq: 700µA maximum

TPA8801B is a high sensitivity current input interface,

which can covert the pA to nA range current signal to 5V

range output.

TPA8801B use one resister to set the transduce gain,

can provide ideal 4.56GΩ current to voltage DC gain

when the resister is 20KΩ. As the output is saturated in

the real application by offset voltage of internal amplifier,

AC coupled mode is used to remove DC offset voltage

and bias current impaction, so the real AC gain in the

application is less than ideal DC gain depend on the

capacitor values.

Analog output

Internal amplifier:

V_OS: ±3mV maximum

Low noise: 25 nV/√Hz

GBWP: 1.3MHz

Input Bias Current: 1pA typical

The internal precision amplifier has 1pA input bias

current is good to transduce down to 100pA signal,

0.4mV offset voltage to expand the input range for DC

signal, 1.3MHz GBW to meet the requirement of AC

signal which is used in some type of dust sensor

application.

◼

ESD rating: HBM 8KV / CDM 2KV

Operation temperature range: –40°C to 125°C

Green, Popular Type Package

TPA8801B is specified for operation over the -40°C to

125°C range.

Applications

◼

Dust sensor for air quality monitoring (PM2.5,

PM10)

TPA8801B is available in 5mm*6mm 14-lead TSSOP

package. TPA8801B possibly in 3mm*2mm 14-lead DFN

package, 1/5 size versus TSSOP-14 package, to meet

the size limitation application, the sample can be

provided in one month.

◼

Photodiode interface

Sensor interface for current output sensor

Pin Configuration

3PEAK and the 3PEAK logo are registered trademarks of

3PEAK INCORPORATED. All other trademarks are the property of

their respective owners.

TPA8801B

14-Pin TSSOP

(-T Suffixes)

IN-

Out

IN+

12 HPFC

11 V_CC

GND

GR2

GR1

SC1

SC2

LPFC

www.3peak.com

REV B

12 3 4 5 6 7 8

中文翻译

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