5962-8853901EA(RevG) 데이터 시트보기 (PDF) - Analog Devices

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제조사

5962-8853901EA
(Rev.:RevG)

Precision Instrumentation Amplifier

Analog Devices 

AD524

Data Sheet

Table 5. Error Budget Analysis

Error Source

Gain Error

Gain Instability

Gain Nonlinearity

Input Offset Voltage

Input Offset Voltage Drift

Output Offset Voltage1

Output Offset Voltage Drift1

Bias Current-Source

Imbalance Error

Bias Current-Source

Imbalance Drift

Offset Current-Source

Imbalance Error

Offset Current-Source

Imbalance Drift

Offset Current-Source

Resistance-Error

Offset Current-Source

Resistance-Drift

Common Mode Rejection 5 V DC

Noise, RTI (0.1 Hz to 10 Hz)

AD524C

Specifications

±0.25%

25 ppm

±0.003%

±50 µV, RTI

±0.5 µV/°C

–

±2.0 mV

±25 µV/°C

±15 nA

±100 pA/°C

±10 nA

±100 pA/°C

±10 nA

±100 pA/°C

115 dB

0.3 µV p-p

Calculation

±0.25% = 2500 ppm

(25 ppm/°C)(60°C) = 1500 ppm

±0.003% = 30 ppm

±50 µV/20 mV = ±2500 ppm

(±0.5 µV/°C)(60°C) = 30 µV

30 µV/20 mV = 1500 ppm

±2.0 mV/20 mV = 1000 ppm

(±25 µV/°C)(60°C)= 1500 µV

1500 µV/20 mV = 750 ppm

(±15 nA)(100 Ω ) = 1.5 µV

1.5 µV/20 mV = 75 ppm

(±100 pA/°C)(100 Ω )(60°C) = 0.6 µV

0.6 µV/20 mV = 30 ppm

(±10 nA)(100 Ω ) = 1 µV

1 µV/20 mV = 50 ppm

(100 pA/°C)(100 Ω )(60°C) = 0.6 µV

0.6 µV/20 mV = 30 ppm

(10 nA)(175 Ω ) = 3.5 µV

3.5 µV/20 mV = 87.5 ppm

(100 pA/°C)(175 Ω )(60°C) = 1 µV

1 µV/20 mV = 50 ppm

115 dB = 1.8 ppm × 5 V = 8.8 µV

8.8 µV/20 mV = 444 ppm

0.3 µV p-p/20 mV = 15 ppm

Total Error

1 Output offset voltage and output offset voltage drift are given as RTI figures.

Effect on

Absolute

Accuracy

at TA = 25°C

2500 ppm

–

–

2500 ppm

–

Effect on

Absolute

Accuracy

at TA = 85°C

2500 ppm

1500 ppm

–

2500 ppm

1500 ppm

Effect

on

Resolution

–

–

30 ppm

–

–

1000 ppm 1000 ppm

–

–

750 ppm

–

75 ppm

75 ppm

–

–

30 ppm

–

50 ppm

50 ppm

–

–

30 ppm

–

87.5 ppm 87.5 ppm

–

–

50 ppm

–

444 ppm

444 ppm

–

–

–

15 ppm

6656.5 ppm 10516.5 ppm 45 ppm

Rev. G | Page 22 of 25

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