ADS5401_16 Datasheet, PDF (28/49 Pages) Texas Instruments – Single 12-Bit 800-Msps Analog-to-Digital Converter

ADS5401
SLAS946B – APRIL 2013 – REVISED JANUARY 2016
8.6.3 Register Name: Config2 - Address: 0×02, Default = 0×780
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Figure 50. Register Config2 Format
Register
Address
Register Data
A7-A0 in D15 D14 D13 D12 D11 D10 D9 D8 D7 D6 D5 D4 D3 D2 D1 D0
hex
2
0
0
0
0
0
Over-range threshold
0
0
0
0
0
0
0
D10-D7 Over-range threshold
Default 1111
The over-range detection is triggered 12 output clock cycles after the
overload condition occurs. The threshold at which the OVR is triggered =
1.0V x [decimal value of <Over-range threshold>]/16. After power up or
reset, the default value is 15 (decimal) which corresponds to a OVR
threshold of 0.56dB below fullscale (20*log(15/16)). This OVR threshold is
applicable to both channels.
0
-5
-10
-15
-20
-25
0
2
4
6
8
10
12
14
16
Programmed Value (1-15)
Figure 51. OVR Detection Threshold
28
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