Auxiliary Analog-To-Digital Converter (Auxadc) - Analog Devices ADRV9005 Reference Manual

Reference Manual
AUXILIARY CONVERTERS AND TEMPERATURE SENSOR
Table 107. AuxDAC DAC Code and Output Voltage Characterization Data Summary
Vout_0
Conditions/ worst Vout_4095
Metric (mV) worst (V)
25 °C 16.385 1.753
85 °C 18.767 1.742
-40 °C 13.799 1.760
m 14.649 1.754
s 2.387 0.007
Overall 18.767 1.742
Performan
ce Number
AuxDAC API Programming
A set of API commands set and inspect the AuxDAC, as shown in
Table 108. AuxDAC API List
AuxDAC Function Name
adi_adrv9001_AuxDac_Configure
adi_adrv9001_AuxDac_Inspect
adi_adrv9001_AuxDac_Code_Set
adi_adrv9001_AuxDac_Code_Get
AUXILIARY ANALOG‐TO‐DIGITAL CONVERTER (AUXADC)
The ADRV9001 has four dedicated AuxADCs: AUXADC_0, AUXADC_1, AUXADC_2, and AUXADC_3. The AuxADC is a 10-bit output
delta-sigma converter useful for measuring DC and near-DC signals (<8 kHz). The input voltage range of the AuxADC is 150 mV to 800 mV.
API commands perform the readback of the AuxADC input voltage.
The AuxADCs use the enumeration adi_adrv9001_AuxAdc_e when referenced in the API.
features.
Table 109. AuxADC Pin Mapping and adi_adrv9001_AuxAdc_e Enum Description
Aux ADC Number Pin Name
AUXADC[0] AUXADC_0
AUXADC[1] AUXADC _1
AUXADC[2] AUXADC _2
AUXADC[3] AUXADC _3
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Figure 241. AuxDAC DAC Code vs. Output Voltage Characterization
Mean Gain
without Mean Gain Gain Error
DAC0 with DAC0 with DAC0
(mV/code) (mV/code) (+/- %)
0.471 0.467 --
0.459 0.456 --
0.487 0.482 --
0.472 0.469 --
0.012 0.013 --
0.469 8.429
Description
Sets the configuration for AuxDACs. Enables/disables the selected AuxDAC.
Gets the configuration of the selected AuxDAC.
Sets 12 bit DAC code of the selected AuxDAC.
Reads the DAC word of the selected AuxDAC.
Pin Number
H11
B8
B7
H4
Mean Gain Mean Offset
DAC0 Offset Error (+/-
(mV/Code) (mV) mV)
-- -38.283 --
-- -29.742 --
-- -65.765 --
0.457 -45.497 --
0.009 80.674 --
-45.497 242.023
Table 108.
Table 109
Enum Name
ADI_ADRV9001_AUXADC0
ADI_ADRV9001_AUXADC1
ADI_ADRV9001_AUXADC2
ADI_ADRV9001_AUXADC3
ADRV9001
Vlinear_lo code_min Vlinear_hi
w worst _linear gh worst
(mV) worst (mV)
15.662 262 1.753
18.281 224 1.742
12.984 332 1.759
14.266 220 1.753
2.456 50 0.007
18.281 332 1.742
shows the pins used for the AuxADC
Rev. A | 265 of 377
code_max_
linear
worst
3955
4007
3874
3990
51
3874