SC225KSIT datasheet(8/13 Pages) SECELECTRONICS

8 / 13 page

SC225KSIT

120 kHz Bandwidth, High Voltage Isolation

Current Sensor with Integrated Overcurrent Detection

8/13

PERFORMANCE CHARACTERISTICS

TA Range K, valid at TA = – 40°C to 125°C, VCC = 5 V, unless otherwise specified

Characteristic

Symbol

Test Conditions

Min.

Typ.

Max.

Units

Optimized Accuracy

Range

POA

–12.5

–

12.5

Linear Sensing Range I

–37.5

–

37.5

Noise

NOISE(rm

A = 25°C, Sens = 56 mV/A, Cf = 0, CLOAD = 4.7 nF,

LOAD open

–

1.50

–

Sensitivity

Sens

P = 12.5 A, TA = 25°C

–

mV/A

P = 12.5 A, TA = 25°C to 125°C

–

mV/A

P = 12.5 A, TA = –40°C to 25°C

–

mV/A

Electrical Offset

Voltage Variation

Relative to Vout

P = 0 A, TA = 25°C

–

±4

–

P = 0 A, TA = 25°C to 125°C

–

±14

–

P = 0 A, TA = –40°C to 25°C

–

±23

–

Total Output Error

TOT

Over full scale of I

POA, IP applied for 5 ms, TA = 25°C

to 125°C

–

±2.2

–

Over full scale of I

POA, IP applied for 5 ms, TA =

–40°C to 25°C

–

±3.9

–

1. Although the device is accurate over the entire linear range, the device is programmed for maximum accuracy over the

range defined by IPOA .The reason for this is that in many applications, such as motor control, the start-up current of the

motor is approximately three times higher than the running current.

2. Vpk-pk noise (6 sigma noise) is equal to 6 × VNOISE(rms). Lower noise levels than this can be achieved by using Cf for

applications requiring narrower bandwidth. See Characteristic Performance page for graphs of noise versus Cf and

bandwidth versus Cf.

3. This parameter can drift by as much as 2.4% over the lifetime of this product.

4. This parameter can drift by as much as 13 mV over the lifetime of this product.

5. This parameter can drift by as much as 2.5% over the lifetime of this product.

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