AD9261 Analog Devices, AD9261 Datasheet - Page 22

• Manufacturer Part Number: AD9261
• Description: 16-Bit, 10 MHz Bandwidth, 30 MSPS to 160 MSPS Continuous Time Sigma-Delta ADC
• Manufacturer: Analog Devices

Specifications of AD9261

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 160MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: 2 V p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: CSP

AD9261
Table 19. OR Threshold Levels
0x111[5:0]
1
2
3
4
5
6
7
8
9
A
B
C
D
E
F
10
11
12
13
14
15
Table 20. OR Conditions
OR Conditions
Normal, Reset Off
Digital Threshold,
Full Overrange,
Data Valid, No Reset
Normal, Reset On
Digital Threshold,
Full Overrange,
Data Valid,
1
X = don’t care.
Reset Off
Reset Off
Reset On
Reset On
Reset On
AUTORST
0
0
0
0
1
1
1
1
Threshold (dBFS)
−36.12
−30.10
−26.58
−24.08
−22.14
−20.56
−19.22
−18.06
−17.04
−16.12
−15.29
−14.54
−13.84
−13.20
−12.60
−12.04
−11.51
−11.02
−10.56
−10.10
−9.68
0
0
1
1
0
0
1
1
OR_IND
0x111[5:0]
16
17
18
19
1A
1B
1C
1D
1E
1F
20
21
22
23
24
25
26
27
28
29
2A
ORTHRESH[5:0]
0
0
1
0
0
1
Rev. 0 | Page 22 of 28
>0
>0
ORTHRESH[4:0]
00000
X
X
00000
X
X
1
1
1
1
Threshold (dBFS)
−9.28
−8.89
−8.52
−8.16
−7.82
−7.50
−7.18
−6.88
−6.58
−6.30
−6.02
−5.75
−5.49
−5.24
−5.00
−4.76
−4.53
−4.30
−4.08
−3.87
−3.66
Description
Digital trip: if 16-bit output > 32,767, OR = 1, else OR = 0
Digital threshold: If 16-bit output > ORTHRESH, OR = 1,
else OR = 0
If analog trip or digital trip, OR = 1, else OR = 0
If analog trip or digital trip or calibration, OR = 0, else OR = 1
Digital trip: if 16-bit output > 32,767, OR = 1, else OR = 0
Digital threshold: if 16-bit output > ORTHRESH, OR = 1,
else OR = 0
If analog trip or digital trip, OR = 1, else OR = 0
If analog trip or digital trip or calibration, OR = 0 else OR = 1
0x111[5:0]
2B
2C
2D
2E
2F
30
31
32
33
34
35
36
37
38
39
3A
3B
3C
3D
3E
3F
Threshold (dBFS)
−3.45
−3.25
−3.06
−2.87
−2.68
−2.50
−2.32
−2.14
−1.97
−1.80
−1.64
−1.48
−1.32
−1.16
−1.00
−0.86
−0.71
−0.56
−0.42
−0.28
−0.14