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PDF ZXCT1084 Data sheet ( Hoja de datos )
| Número de pieza | ZXCT1084 | |
| Descripción | PRECISION HIGH VOLTAGE HIGH-SIDE CURRENT MONITORS | |
| Fabricantes | Diodes | |
| Logotipo |  |
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A Product Line of
Diodes Incorporated www.DataSheet4U.com
ZXCT1082/83/84/85/86/87
PRECISION HIGH VOLTAGE HIGH-SIDE CURRENT MONITORS
Description
The ZXCT1082 and ZXCT1083 are high side unipolar current
sense monitors. These devices eliminate the need to disrupt
the ground plane when sensing a load current.
The ZXCT1082/1084/1086 have 60V maximum operating
voltage and ZXCT1083/1085/1087 have 40V maximum
operating voltage.
The wide common-mode input voltage range and low
quiescent currents coupled with SOT25 packages make them
suitable for a range of applications; including automotive and
systems operating from industrial 24-28V rails.
Their quiescent current is only 0.6µA thereby minimizing
current sensing error.
The ZXCT1082 and ZXCT1083 use three external
transconductance/gain setting resistors which increase
versatility by permitting wide gain ranges and optimization of
bandwidths.
The ZXCT1084/5/6/7 are fixed gain voltage output
counterparts of the ZXCT1082/3.
Features
• Wide supply and common-mode voltage range
o 2.7V to 60V
ZXCT1082/84/86
o 2.7V to 40V
ZXCT1083/85/87
• Independent supply and input common-mode voltage
• Low quiescent current (0.6µA).
• Extended industrial temperate range -40 to 125°C
• Package SOT25
Applications
• Automotive current measurement
• Industrial applications current measurement
• Battery management
• Over current monitor
• Power Management
• Current sources
Pin Assignments
OUT 1
GND 2
S+ 3
5 VCC
4 S-
Typical Application Circuits
RSENSE
VSUPPLY
S+
S-
ZXCT1084/1085
VCC ZXCT1086/1087
GND
OUT
VLOAD
Load
ZXCT1084/85:
ZXCT1086/87:
VOUT = 25 x VSENSE
VOUT = 50 x VSENSE
VSUPPLY
RSENSE
RGT RGT
S+ S-
VCC ZXCT1082/1083
GND
OUT
RG
VLOAD
Load
ZXCT1082/83: VOUT = VSENSE * RG
RGT
ZXCT1082/83/84/85/86/87
Document number: DS32162 Rev. 1 - 2
1 of 13
www.diodes.com
May 2010
© Diodes Incorporated
1 page  
A Product Line of
Diodes Incorporated www.DataSheet4U.com
ZXCT1082/83/84/85/86/87
Typical Characteristics VS+ = 12V, VCC = 5V VSENSE = 100mV, RGT = 5kΩ, RG = 125kΩ, TA = 25°C unless otherwise stated
20 1.8
18
16
14
12
10
8
6
4
2
00
3.0
1 25 ° C
85° C
2 5° C
-4 0° C
VSENSE = 0V
VS+ = 25°C
RGT = 5kΩ
RG = 125k Ω
10 20 30 40 50
VCC (V)
Supply Current vs. Supply Voltage
60
2.5
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.0
0
10 0
90
80
VSENSE = 0V
TA = 25°C
VCC = 5V
RGT = 5kΩ
RG = 125k Ω
10 20 30 40 50
VS+ (V)
S+ Input Current vs. S+ Voltage
60
70
2.0
60
1.5 50
1.0
0.5
0.0
0
1.4 50
1.4 45
1.4 40
1.4 35
1.4 30
VSEN SE = 0V
TA = 25°C
VCC= 5V
RGT = 5kΩ
RG = 125kΩ
10 20 30 40 50
VCC (V)
IS+ Input Current vs. VCC
60
40
30
20
10
0
0
1.6
VCC = 5V
TA = 25°C
VS+ 12V
RGT = 5kΩ
RG = 125k Ω
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4 0.45 0.5
VSENSE (V)
IS+ Input Current vs. VSENSE
1.4
1.2
1.0
1.4 25
0.8
1.4 20
0.6
1.4 15
1.4 10
1.4 05
VSENSE = 0V
VS+ 12V
VCC = 5V
RGT = 5kΩ
RG = 125k Ω
0.4
0.2
1.4 00
-40 -25 -10 5 20 35 50 65 80 95 110 125
TA Temperature (°C)
IS+ Input Current vs. Ambient Temperature
0.0
0
ZXCT1082/83/84/85/86/87
Document number: DS32162 Rev. 1 - 2
5 of 13
www.diodes.com
VCC = 5V
TA = 25°C
VSENSE = 0V
RGT = 5kΩ
RG = 125kΩ
10 20 30 40 50
VS+ (V)
IS- Input Current vs. S+ Voltage
60
May 2010
© Diodes Incorporated
5 Page 
A Product Line of
Diodes Incorporated www.DataSheet4U.com
ZXCT1082/83/84/85/86/87
Typical Characteristics (Cont.) VS+ = 12V, VCC = 5V VSENSE = 100mV, RGT = 5kΩ, RG = 125kΩ , TA = 25°C
14 0
25°C
12 0
10 0
85°C
-40°C
VCC = 5V
VS+ = 12V
VSENSE = 100mV
RGT = 5kΩ
Gain = 50
70
60
50
80
125°C
60
40
30
40
20
0
1E+0 10E+0 100E+0 1E+3 10E+3 100E+3 1E+6
Frequency (Hz)
Power Supply Rejection Ration vs. Frequency
10 00
10 0
VCC = 5V
VS+ = 12V
VSENSE = 100mV
TA = 25°C
RGT = 5kΩ
G ain = 25
20
10
0
0
10 00
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
Time (s)
Load Dump vs. Time
VCC = 5V
VS+ = 12V
VSENSE = 100mV
TA = 25°C
10 0
10
1
100.0E-3 10.0E+0
1.0E+3 100.0E+3
Frequency (Hz)
Input Referred Noise Current vs. Frequency
10 00
VCC = 5V
VS+ = 12V
VSENSE = 100mV
TA = 25°C
10 0
10
1
10 0.0E -3
10 .0E+ 0
1.0 E+ 3
Frequency (Hz)
10 0.0E +3
Input Referred Noise Current vs. Frequency
10
1
10 0.0E -3
10 .0E+ 0
1.0 E+ 3
Frequency (Hz)
10 0.0E +3
Input Referred Noise Current vs. Frequency
ZXCT1082/83/84/85/86/87
Document number: DS32162 Rev. 1 - 2
11 of 13
www.diodes.com
May 2010
© Diodes Incorporated
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ZXCT1084.PDF ] | |
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