CTSR 0.6-P LEM USA Inc, CTSR 0.6-P Datasheet - Page 7

• Manufacturer Part Number: CTSR 0.6-P
• Description: TRANSDUCER CURRENT 0.6A
• Manufacturer: LEM USA Inc
• Series: CTSRr

Specifications of CTSR 0.6-P

• Current - Sensing: -
• Accuracy: ±1.5%
• Sensitivity: -
• Current - Supply: 21.6mA
• Sensor Type: Flux Gate
• Voltage - Supply: 4.75 V ~ 5.25 V
• Output: -
• Frequency: 9.5kHz
• Response Time: 30µs, 30µs
• Polarization: Bidirectional, Unidirectional
• Operating Temperature: -40°C ~ 105°C
• Package / Case: Module
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant
• Other names: 398-1110

Filtering, decoupling CTSR transducer
Supply voltage Vc (5 V):
The CTSR transducers have internal decoupling capacitors, but in the case of a power supply track on the application PCB
having a high impedance, it is advised to provide local decoupling, 100 nF or more, located close to the transducer.
Reference Vref:
Ripple present on the Vref pin can be filtered with a low value of capacitance because of the internal 499 ohm series resistance.
The CTSR transducers have an internal capacitor of 22 nF between Vref pin and Gnd pin and the maximum filter capacitance
value which could be added is 1 µF. Adding a larger decoupling capacitor will increase the activation delay of degauss.
Output Vout:
The CTSR transducers have an internal low pass filter 470 ohm/22 nF; if a decoupling capacitor is added on Vout pin, the
bandwidth and the response time will be affected. In case of short circuit, the transducer CTSR can source or sink up to a
maximum of 10 mA on its output Vout.
Using an external reference voltage
If the Vref pin of the transducer is not used it could be either left unconnected or filtered according to the previous paragraph
“Reference Vref”.
The Vref pin has two modes Ref Out and Ref In:
The following graphs show how the measuring range of the transducer depends on the external reference voltage value Vref
(Vc = 5 V).
Upper limit: I
Upper limit: I
Lower limit: I
Lower limit: I
22June2011 /Version 2
-200
-400
-600
600
400
200
• In the Ref Out mode the 2.5 V internal precision reference is used by the transducer as the reference point for bipolar
• In the Ref In mode, an external reference voltage is connected to the Vref pin; this voltage is specified in the range 2.3
0
measurements; this internal reference is connected to the Vref pin of the transducer through a 499 ohms resistor. It
tolerates sink or source currents up to ±5 mA, but the 499 ohms resistor prevents this current to exceed these limits.
to 4 V and is directly used by the transducer as the reference point for measurements. The external reference voltage
Vref must be able:
o either to source a typical current of
o or to sink a typical current of
2
P
P
P
P
=500 mA
=-363.5*Vref+1454.25
=-210.6*Vref+0.092
=-500 mA
LEM reserves the right to carry out modifications on its transducers, in order to improve them, without prior notice.
V
REF
3
(V)
I PRM 500 mA
(Vref = 2.3..2.625 V)
(Vref = 2.625..4 V)
(Vref = 2.3..2.375 V)
(Vref = 2.375..4 V)
2
5 .
499
−
Vref
Application information
Vref
, the maximum value will be 0.4 mA when Vref = 2.3 V.
499
4
−
2
5 .
, the maximum value will be 3 mA when Vref = 4 V.
Upper limit: I
Upper limit: I
Lower limit: I
Lower limit: I
-1000
1000
-200
-400
-600
-800
800
600
400
200
0
2
P
P
P
P
=850 mA
=-574.3*Vref+2297.5
=-342.9*Vref+0.148
=-850 mA
V
REF
3
(V)
CTSR series
I PRM 850 mA
(Vref = 2.3..2.52V)
(Vref = 2.52..4 V)
(Vref = 2.3..2.48 V)
(Vref = 2.48..4 V)
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