AD4134 datasheet(32/92 Pages) AD

32 / 92 page

Data Sheet

AD4134

NOISE PERFORMANCE AND RESOLUTION

analog.com

Rev. 0 | 32 of 92

Table 9 to Table 16 contain the data of the noise performance for

the wideband 0.433 × ODR filter, wideband 0.10825 × ODR filter,

sinc6 filter, and the sinc3 digital filter of the AD4134 for various

output data rates and channel averaging settings. The noise values

and dynamic range specified are typical for the bipolar input range

with an external 4.096 V reference (VREF).

The rms noise is measured with shorted analog inputs. The dynam-

ic range is calculated as

Dynamic Range (dB) = 20log10((2 × VREF/2√2)/(RMS Noise)

The LSB size is calculated as follows:

LSB Size = (2 × VREF)/224

where LSB Size is 488 nV with a 4.096 V reference.

Table 9. Wideband 0.433 × ODR Filter, High Performance Mode Noise Performance vs. Output Data Rate (VREF = 4.096 V)

Output Data Rate

(kSPS)

−3 dB Bandwidth (kHz)

Single Channel

2:1 Channel Averaging

4:1 Channel Averaging

Dynamic Range

(dB)

RMS Noise

(µV)

Dynamic Range

(dB)

RMS Noise

(µV)

Dynamic Range

(dB)

RMS Noise (µV)

374

161.94

107.21

12.63

110.46

8.68

113.46

6.15

325

140.73

108.09

11.41

111.21

7.96

114.25

5.61

285

123.41

108.65

10.69

111.81

7.43

114.8

5.27

256

110.85

109.21

10.03

112.5

6.87

115.26

4.99

235

101.76

109.71

9.47

112.79

6.63

115.85

4.67

200

86.60

110.58

8.57

113.63

6.02

116.57

4.29

175

75.78

111.12

8.05

114.27

5.6

117.25

3.97

128

55.42

112.72

6.70

115.66

4.77

118.68

3.37

100

43.30

113.71

5.97

116.81

4.17

119.83

2.95

34.64

114.80

5.27

117.9

3.68

120.78

2.64

27.71

115.83

4.68

118.87

3.29

121.87

2.33

13.86

118.91

3.28

121.82

2.34

124.89

1.65

6.93

121.94

2.32

124.81

1.66

127.8

1.17

4.33

123.80

1.87

126.67

1.34

129.76

0.94

2.17

126.68

1.34

129.55

0.96

132.34

0.69

2.5

1.08

129.36

0.99

132.32

0.7

135.08

0.51

Table 10. Wideband 0.433 × ODR Filter, Low Power Mode Noise Performance vs. Output Data Rate (VREF = 4.096 V)

Output Data Rate

(kSPS)

−3 dB Bandwidth (kHz)

Single Channel

2:1 Channel Averaging

4:1 Channel Averaging

Dynamic Range

(dB)

RMS Noise

(µV)

Dynamic Range

(dB)

RMS Noise

(µV)

Dynamic Range

(dB)

RMS Noise (µV)

374

161.94

100.42

27.61

103.41

19.55

106.33

13.96

325

140.73

102.03

22.93

105.04

16.21

107.96

11.57

285

123.41

103.21

20.01

106.37

13.9

109.21

10.03

256

110.85

104.08

18.10

107.12

12.75

110.12

9.03

235

101.76

104.67

16.91

107.89

11.68

110.64

8.50

200

86.60

105.80

14.85

108.97

10.31

111.76

7.47

175

75.78

106.64

13.48

109.79

9.37

112.55

6.82

128

55.42

108.29

11.15

111.32

7.87

114.31

5.57

100

43.30

109.49

9.71

112.55

6.83

115.51

4.85

34.64

110.58

8.57

113.54

6.09

116.47

4.34

27.71

111.63

7.59

114.68

5.34

117.61

3.81

13.86

114.72

5.32

117.75

3.75

120.64

2.68

6.93

117.69

3.78

120.78

2.64

123.71

1.88

4.33

119.73

2.99

122.72

2.11

125.76

1.49

2.17

122.79

2.10

125.66

1.50

128.61

1.07

2.5

1.08

125.64

1.51

128.58

1.07

131.48

0.77

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