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参数资料
| 型号： | LTC1531CSW |
| 厂商： | LINEAR TECHNOLOGY CORP |
| 元件分类： | 运动控制电子 |
| 英文描述： | Self-Powered Isolated Comparator |
| 中文描述： | COMPARATOR, PDSO28 |
| 封装： | 0.300 INCH, PLASTIC, SOP-28 |
| 文件页数： | 3/16页 |
| 文件大小： | 266K |
| 代理商： | LTC1531CSW |
3
LTC1531
ELECTRICAL CHARACTERISTICS
The
G
denotes specifications which apply over the full operating temperature range, otherwise specifications are TA = 25
°
C, V
CC
= 5V.
SYMBOL
V
IH
V
IL
V
OH
V
OL
I
INL
, I
INH
dV/dt
C
ISO
PARAMETER
SHDN Input High Voltage
SHDN Input Low Voltage
DATA, VALID, ZCDATA Output High Voltage
DATA, VALID, ZCDATA Output Low Voltage
SHDN Low or High Level Input Current
Continuous dV/dt Rejection
CONDITIONS
V
CC
= 4.5V
V
CC
= 5.5V
V
CC
= 4.5V, I
O
= –400
μ
A
V
CC
= 4.5V, I
O
= 1.6mA
V
IN
= 5V, 0V
(Note 8)
MIN
2.4
TYP
MAX
UNITS
G
V
V
V
V
G
0.8
G
3.0
4.3
0.2
G
0.4
±
1
G
μ
A
G
50
70
2
V/
μ
s
pF
Note 4:
The sample rate, f
SAMPLE
, varies with loading on V
PW
and V
REG
.
Note 5:
Load on CMPOUT pulls current from V
REG
when CMPOUT is high.
Note 6:
Value derived from 1 second test.
Note 7:
Zero-cross hysteresis is the minimum amount of signal amplitude
above or below 0V differential to retrigger the zero-cross comparator.
Note 8:
Parameter not tested but guaranteed by design.
TYPICAL PERFOR
M
A
CE CHARACTERISTICS
U
TIME (ms)
0
V
R
2.5
3.3
0
1531 F02
20
10
30
40
V
CC
= 5V, C
VPW
= 1
μ
F
I
VREG
= 100
A
= 25
°
C
NOTE: NONPERIODIC SAMPLES DUE TO DEPENDENCE
ON V
> 3.3V AND THE POWER-LISTEN CYCLE
SAMPLING
Note 1:
Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2:
The sample rate is not continuous, but depends on V
PW
charging
rate. See Applications Information.
Note 3:
See Applications Information for further description of the
comparator switched-capacitor input circuit.
Figure 2. V
REG
and V
PW
vs Time
(I
VREG
= 100
μ
A)
Figure 1. V
PW
Power-Up and
V
REG
Samples vs Time
TIME (ms)
0
V
P
3.3
2.5
1531 F01
100
200
300
NOTES: V
RIPPLE
DEPENDS ON C
VPW
AND I
VPW
+ I
VREG
t
SAMPLE
DEPENDS ON I
VPW
+ I
VREG
t
SAMPLE
V
REG
V
PW
V
CC
= 5V
C
VPW
= 1
μ
F
I
VREG
= 5mA
T
A
°
C
V
RIPPLE
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