AD7148 Analog Devices, AD7148 Datasheet - Page 47

• Manufacturer Part Number: AD7148
• Manufacturer: Analog Devices

Specifications of AD7148

• Resolution (bits): 16bit
• # Chan: 8
• Sample Rate: 250kSPS
• Interface: I²C/Ser 2-Wire,Ser
• Analog Input Type: SE-Uni
• Ain Range: ± 8 pF (Delta C)
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

Table 42. STAGEx Detailed Sensitivity Control Description (x = 0 to 7)
Data
Bit
[3:0]
[6:4]
[7]
[11:8]
[14:12]
[15]
Default
Value
X
X
X
X
X
X
Type
R/W
R/W
R/W
R/W
Mnemonic
NEG_THRESHOLD_SENSITIVITY
NEG_PEAK_DETECT
Unused
POS_THRESHOLD_SENSITIVITY
POS_PEAK_DETECT
Unused
Rev. A | Page 47 of 56
Negative threshold sensitivity control
Negative peak detect setting
Positive threshold sensitivity control
Positive peak detect setting
Description
Set to 0
Set to 0
0000 = 25%, 0001 = 29.73%, 0010 = 34.40%, 0011 = 39.08%
0100 = 43.79%, 0101 = 48.48%, 0110 = 53.15%
0111 = 57.83%, 1000 = 62.51%, 1001 = 67.22%
1010 = 71.90%, 1011 = 76.58%, 1100 = 81.28%
1101 = 85.96%, 1110 = 90.64%, 1111 = 95.32%
000 = 40% level, 001 = 50% level, 010 = 60% level
011 = 70% level, 100 = 80% level, 101 = 90% level
0000 = 25%, 0001 = 29.73%, 0010 = 34.40%, 0011 = 39.08%
0100 = 43.79%, 0101 = 48.48%, 0110 = 53.15%
0111 = 57.83%, 1000 = 62.51%, 1001 = 67.22%
1010 = 71.90%, 1011 = 76.58%, 1100 = 81.28%
1101 = 85.96%, 1110 = 90.64%, 1111 = 95.32%
000 = 40% level, 001 = 50% level, 010 = 60% level
011 = 70% level, 100 = 80% level, 101 = 90% level
AD7148