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AD7329 Datasheet(PDF) 27 Page - Analog Devices

Part No. AD7329
Description  1 MSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC
Download  40 Pages
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD7329 Datasheet(HTML) 27 Page - Analog Devices

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AD7329
Rev. 0 | Page 27 of 40
Table 13. Power Mode Selection
PM1
PM0
Description
1
1
Full Shutdown Mode. In this mode, all internal circuitry on the AD7329 is powered down. Information in the control register
is retained when the AD7329 is in full shutdown mode.
1
0
Autoshutdown Mode. The AD7329 enters autoshutdown on the 15th SCLK rising edge when the control register is updated.
All internal circuitry is powered down in autoshutdown.
0
1
Autostandby Mode. In this mode, all internal circuitry is powered down, excluding the internal reference. The AD7329 enters
autostandby mode on the 15th SCLK rising edge after the control register is updated.
0
0
Normal Mode. All internal circuitry is powered up at all times.
Table 14. Sequencer Selection
Seq1
Seq2
Description
0
0
The channel sequencer is not used. The analog channel, selected by programming the ADD2 to ADD0 bits in the control
register, selects the next channel for conversion.
0
1
Uses the sequence of channels that were previously programmed in the sequence register for conversion. The AD7329
starts converting on the lowest channel in the sequence. The channels are converted in ascending order. If uninterrupted,
the AD7329 keeps converting the sequence. The range for each channel defaults to the range previously written into the
corresponding range register.
1
0
This configuration is used in conjunction with the channel address bits in the control register. This allows continuous
conversions on a consecutive sequence of channels, from Channel 0 through a final channel selected by the channel
address bits in the control register. The range for each channel defaults to the range previously written into the
corresponding range register.
1
1
The channel sequencer is not used. The analog channel, selected by programming the ADD2 bit to ADD0 bit in the control
register, selects the next channel for conversion.


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