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A1335LLETR-T PDF预览

A1335LLETR-T

更新时间: 2022-02-26 12:11:40
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29页 1567K
描述
Precision Hall-Effect Angle Sensor IC with I 2C, SPI, and SENT Interfaces

A1335LLETR-T 数据手册

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Precision Hall-Effect Angle Sensor IC  
with I2C, SPI, and SENT Interfaces  
A1335  
OPERATING CHARACTERISTICS (continued): Valid throughout full operating voltage and ambient temperature ranges,  
unless otherwise specified  
Characteristic  
Symbol  
Test Conditions  
Min.  
Typ.1  
Max.  
Unit2  
I2C Interface Specifications (VPU = 3.3 V on SDA and SCL pins), continued  
Logic Input Current3  
IIN  
VIN = 0 V to VCC  
–1  
1
µA  
V
Output Voltage (SDA pin)  
VOL(I2C)  
RPU = 1 kΩ, CB = 100 pF, TA = 25°C  
0.6  
Logic Input Rise Time (SDA and  
SCL pins)3  
tr(IN)  
tf(IN)  
300  
300  
ns  
ns  
Logic Input Fall Time (SDA and  
SCL pins)3  
SDA Output Rise Time3  
tr(OUT)  
tF(OUT)  
fCLK  
RPU = 1 kΩ, CB = 100 pF  
RPU = 1 kΩ, CB = 100 pF  
300  
300  
400  
ns  
ns  
SDA Output Fall Time3  
SCL Clock Frequency13  
kHz  
kΩ  
pF  
V
SDA and SCL Bus Pull-Up Resistor  
Total Capacitive Load on SDA Line3  
Pull-Up Voltage3  
RPU  
1
CB  
100  
3.63  
VPU  
RPU = 1 kΩ, CB = 100 pF  
2.97  
3.3  
SENT Interface Specifications3  
SENT Message Duration  
tSENT  
Tick time = 3 µs  
1
ms  
µs  
Minimum Programmable SENT  
Message Duration  
Tick time = 0.5 µs, 3 data nibbles, SCN, and  
CRC, nibble length = 27 ticks  
tSENTMIN  
96  
VSENT(L) 5 kΩ ≤ Rpullup ≤ 50 kΩ  
0.9 × VS  
0.7 × VS  
0.10  
V
V
V
V
V
SENT Output Signal  
Minimum Rpullup = 5 kΩ  
VSENT(H)  
Maximum Rpullup = 50 kΩ  
VSENTtrig(L)  
VSENTtrig(H)  
1.4  
SENT Trigger Signal  
2.8  
Minimum Time Frame for SENT  
Trigger Signal  
Ttrig(MIN)  
2
µs  
From end of trigger pulse to beginning of SENT  
message frame.  
TSENT (SENT_MODE 3 and SENT_MODE 4)  
Triggered Delay Time  
tdSENT  
ILIMIT  
7
Tick  
mA  
Maximum Sink Current  
Magnetic Characteristics  
Magnetic Field6  
Output FET on, TA = 25°C  
30  
B
Range of input field  
300  
1000  
G
Continued on the next page…  
Allegro MicroSystems, LLC  
115 Northeast Cutoff  
6
Worcester, Massachusetts 01615-0036 U.S.A.  
1.508.853.5000; www.allegromicro.com  

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