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ZXCT1009
HIGH-SIDE CURRENT MONITOR
 
ZXCT1009  
Document number: DS33441 Rev. 12 - 2 
2 of 8
www.diodes.com
April 2011
?Diodes Incorporated 
 
Pin Descriptions 
 
Pin Name
Pin Function
V
SENSE+
 
Connection to supply voltage
V
SENSE-
 
Connection to load
I
OUT
 
Output current, proportional to measured current
 
Absolute Maximum Ratings (T
A
= 25?/SPAN>C) 
 
Description
Rating
Unit
Voltage on any pin (relative to I
OUT
) 
-0.6 to 20
V
Continous output current, I
OUT
 
25
mA
Continuous sense voltage, V
SENSE
 
 
-0.5 to +5
V
Operating temperature, T
A
 
-40 to 85
癈
Storage temperature
-55 to 125
癈
Package power
dissipation @ T
A
 = 25癈
(Derate to zero @ 125癈) 
SOT23
450
mW
SM8
2
W
Operation above the absolute maximum rating may cause device failure. Operation at the absolute
maximum ratings for extended periods may reduce device reliability.
 
Electrical Characteristics (T
A
 = 25?/SPAN>C, V
IN
 = 5V, R
OUT
 = 100&) 
 
 Symbol 
Parameter
Conditions
Limits
Units
Min
Typ
Max
V
IN
 
V
CC
 range
 
2.5 
 
20 
V
I
OUT
1
     Output Current
V
SENSE
 = 0V
V
SENSE
 = 10mV
V
SENSE
 = 100mV
V
SENSE
 = 200mV
V
SENSE
 = 1V
1
90
0.975
1.95
9.6
4
104
1.002
2.0
9.98
15
120
1.025
2.05
10.2
礎
礎
mA
mA
mA
V
SENSE
 
   Sense Voltage
 
0
 
2500
mV
I
SENSE-
 
V
SENSE -
 
Input Current
 
 
 
100
nA
A
CC
 
Accuracy
R
SENSE
 = 0.1&
V
SENSE
 = 200mV
 
-2.5
 
 
2.5
 
%
G
M
 
Transconductance,
I
OUT
/V
SENSE
 
 
 
10000
 
礎/V
BW
Bandwidth
V
SENSE(DC)
= 10mv, RF P
IN
 = -40dBm
!
V
SENSE(DC)
= 100mv, RF P
IN
 = -20dBm
!
 
 
300
2
 
kHz
MHz
Notes:
1. Includes input offset voltage contribution
 
 . V
SENSE
 is defined as the differential voltage between V
SENSE+
and V
SENSE-
. 
 
  V
SENSE
 = V
SENSE+
- V
SENSE-
 
 
  = V
IN
 - V
LOAD
 
 
  = I
LOAD
 x R
SENSE
 
 
! -20dBm=63mV
PP
 into 50& 
 
 
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