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AS8510

Datasheet - Electrical Character i s t ics

6.4.12 Internal Temperature Sensor

6.5 System Specifications

System Measurement Error Budget for Voltage and Current Channel.

Temperature Range: -20ºC to +65ºC; Output data rate is 1kHz, VCC = 3.3V, chopping enabled.

Notes:

1. These specifications are defined by taking one channel as reference and measured on the other channel.

2. Guaranteed by design.

3. System measurement error due to noise, individual block parameter drifts and non linearity. Based on evaluation, not tested.

4. System error due to offset is neglected because of chopper architecture.

Table 26. Internal Temperature Sensor

Symbol

Parameter

Conditions

Min

Typ

Max

Units

TINTRNG

Temperature sensor range

-40

125

ºC

ΔTIN

Temperature measurement accuracy

ºC

TINTSLP

Temperature sensor slope

Guaranteed by design; at PGA gain 5

which is the recommended Gain for

internal temperature measurement.

Digits/C

TINT65G5

Temperature sensor output at gain 5

40660

41807

43012

Digits

Table 27. System Specifications

Symbol

Parameter

Min

Typ

Max

Units

Channel to channel isolation

-90

Difference in channel to channel attenuation

@600Hz

1, 2

3dB

Difference in phase shift between the two

channels @600Hz

1, 2

5Deg

Table 28. System Measurement Error Budget for Gains 5 and 25

Symbol

Parameter

Conditions

Min

Typ

Max

Units

Err

System measurement error

3, 4

±0.5

±0.8

Measurement error due to PGA gain drift

From device evaluation

±0.3

Measurement error due to VREF drift6

±0.4

Measurement error due to non-linearity of PG Tested by distortion measurements

±0.025

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