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TPA8801B PDF预览

TPA8801B

更新时间: 2024-11-11 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

TPA8801B 数据手册

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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:  
-
-
-
-
VOS: ±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)  
1
2
3
4
5
6
7
14  
13  
TO  
IN-  
Out  
NR  
IN+  
12 HPFC  
11 VCC  
GND  
GR2  
GR1  
TP  
SC1  
SC2  
10  
9
8
LPFC  
www.3peak.com  
REV B  
1

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