CS5490-ISZR 查看數據表（PDF） - Cirrus Logic

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CS5490-ISZR

Two Channel Energy Measurement IC

Cirrus Logic 

CS5490

6.6.37 Instantaneous Quadrature Power (Q) – Page 16, Address 15

MSB

LSB

-(20) 2-1

2-2

2-3

2-4

2-5

2-6

2-7

..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23

Default = 0x00 0000

Instantaneous quadrature power, Q, the product of V shifted 90° and I.

This is a two's complement value in the range of -1.0  value  1.0, with the binary point to the right of the

MSB.

6.6.38 Peak Current (IPEAK) – Page 0, Address 37

MSB

LSB

-(20) 2-1

2-2

2-3

2-4

2-5

2-6

2-7

..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23

Default = 0x00 0000

Peak current (IPEAK) contains the value of the instantaneous current 1 sample with the greatest magnitude

detected during the last low-rate interval.

This is a two's complement value in the range of -1.0  value  1.0, with the binary point to the right of the

MSB.

6.6.39 Peak Voltage (VPEAK) – Page 0, Address 36

MSB

LSB

-(20) 2-1

2-2

2-3

2-4

2-5

2-6

2-7

..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23

Default = 0x00 0000

Peak voltage (VPEAK) contains the value of the instantaneous voltage sample with the greatest magnitude

detected during the last low-rate interval.

This is a two's complement value in the range of -1.0  value  1.0, with the binary point to the right of the

MSB.

6.6.40 Apparent Power (S) – Page 16, Address 20

MSB

LSB

0

2-1

2-2

2-3

2-4

2-5

2-6

2-7

..... 2-17 2-18 2-19 2-20 2-21 2-22 2-23

Default = 0x00 0000

Apparent power 1 (S) is the product of VRMS and IRMS or SQRT(PAVG2 + QAVG2).

This is an unsigned value in the range of 0  value  1.0, with the binary point to the right of the MSB.

46

DS982F2

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