zxct1020 Zetex Semiconductors plc., zxct1020 Datasheet - Page 2

• Manufacturer Part Number: zxct1020
• Description: Zxct1020 - Precision Current Output Monitor
• Manufacturer: Zetex Semiconductors plc.

Absolute maximum ratings
Voltage on V
Voltage on S+
V
Junction temperature
Storage temperature
Package power dissipation (T
NOTES:
(a) Subject to V
(b) Subject to absolute maximum V
(c) V
(d) V
Pin out information
Recommended operating conditions
(*) For best performance V
Recommended resistor gain setting combinations
Issue 1 - August 2007
© Zetex Semiconductors plc 2007
NOTES:
Pin
1
2
3
4
5
V
V
V
V
R
T
SENSE
A
SENSE+
B
SENSE
OUT
SH
voltage between S+ and S-.
SENSE
SENSE
(c)
Name
S+
GND
OUT
V
S-
might need to be reduced when used with smaller values of R
is defined as the voltage difference across the sense resistor. and is the voltage across resistor R
Gain
100
B
10
20
50
Common-mode sense input range
Bias pin input voltage range
Differential sense Input voltage range
Output voltage range
Shunt resistor value
Ambient temperature range
SENSE
B
(a)
with respect to GND pin
, S-
+ never going 6V below V
(b)
Pin function
Positive sense input. Should be tied to positive side of sense resistor via
resistance (R
Ground and substrate connection of device.
Current output. A gain setting resistor (R
connected to this pin to set overall voltage gain of:
The resistance, R
to R
Input voltage pin. Provides bias to current monitor and should be tied to the
rail whose current is being monitored.
High impedance negative sense voltage input
B
, OUT with respect to GND pin
and V
G
Parameter
. When driving low impedance loads both R
Gain = R
SENSE+
SENSE
R
amb
1.5k
750
300
150
SHUNT
SH
should be referred to the rail whose current is being measured.
not being exceeded.
= 25°C) SOT23-5
G
) of the order of 150
/R
G
, placed on out will set the ZXCT1020 output impedance equal
B
SH
.
(*)
2
R
15k
15k
15k
15k
GAIN
SH
and at larger rails due to increased power dissipation.
to 1.5k .
G
) referenced to GND should be
Min.
120
-40
2.5
2.5
0
0
G
and R
-0.5V to 20V
-0.5V to V
-0.5V to +2.5V
-40°C to125°C
-55°C to 150°C
300mW
V
SENSE-
SH
Max.
2000
1.5
20
20
85
should be reduced.
ZXCT1020
B
www.zetex.com
+0.5V
- 1
(d)
SH
Units
°C
V
V
V
V
plus the