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參數(shù)資料
| 型號(hào)： | L290B |
| 廠商： | 意法半導(dǎo)體 |
| 英文描述： | TACHOMETER CONVERTER |
| 中文描述： | 轉(zhuǎn)速表轉(zhuǎn)換器 |
| 文件頁(yè)數(shù)： | 4/8頁(yè) |
| 文件大?。?/td> | 104K |
| 代理商： | L290B |
4/8
Symbol
Parameter
Test conditions
Min.
Typ.
Max.
Unit
COMPARATORS WITH HYSTERESIS
(C
1
, C
2
, and C
3
)
V
THP
(
°
)
Positive Threshold Voltage
(pin 2, 12, 15)
C
1
and C
2
550
850
mV
C
3
700
900
mV
V
THN
(
°
°
)
Negative Threshold Voltage
(pin 2, 12, 15)
C
1
and C
2
55
175
mV
C
3
570
830
mV
FTF
Threshold Hysteresis
C
3
72
120
mV
V
L
Output Voltage(low level)
(pin 10, 13, 14)
I
0
= 2 mA
FTA= FTB = FTF = 0 V
0.2
0.4
V
I
leak
(pins 10, 13, 14)
FTA= FTB = 0.5 V
V
CE
= 5 V
FTF = 1 V
1
μ
A
REFERENCE GENERATOR
Vref
DC Reference Voltage
(pin 3)
FTA= FTB =
±
0.5 V
p
(*)
I
ref
= 1 mA
4.5
5
5.5
V
Iref
Output Current(pin 3)
1.4
mA
”TACHO” AMPLIFIER
(A3)
V
os
Output Offset Voltage (pin 4)
FTA=
±
15 mV
FTB = 0.5V
±
80
mV
V
o
DC Output Voltage (pin 4)
FTA= FTB =
±
0.5 V
p
(**)
V
01
5.4
6
6.6
V
VMA = VMB =
±
1.25 V
p
(***)
V
02
- 5.4
- 6
- 6.6
V
0
V
01
+ V
02
- 150
+ 150
mV
V
0
Output VoltageSwing (pin 4)
FTA= FTB = 0.5V
9
V
Sin (B)
FTA= FTB = -0.5 V
- 9
V
MA
V
MB
Multiplier Input Voltage
(pin 7, 8)
±
1.25
±
1.7
V
p
V
bias
Bias Voltage(pin 6)
FTAand FTB Floating
- 6.5
- 8
V
ELECTRICALCHARACTERISTICS
(continued)
(
°
)
Note
:
FTA= FTB = FTF
(
°
°
)
: FTA= FTB = FTF =
:
Phase relationship between the signals :
* FTA : 0
°
FTB : 90
°
** FTA : 0
°
FTB : - 90
°
*** FTA : 0
°
FTB : 90
°
V
MA
= 90
°
V
MA
= 90
°
V
MB
V
MB
= 0
°
= 180
°
0
1V
0
1V
L290
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