AD7327 Datasheet, PDF (24/36 Pages) Analog Devices – 500 kSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC

AD7327
Table 11. Power Mode Selection
PM1 PM0 Description
1
1
Full Shutdown Mode. In this mode, all internal circuitry on the AD7327 is powered down. Information in the control register
is retained when the AD7327 is in full shutdown mode.
1
0
Autoshutdown Mode. The AD7327 enters autoshutdown on the 15^th 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 AD7327 enters
autostandby mode on the 15^th SCLK rising edge after the control register is updated.
0
0
Normal Mode. All internal circuitry is powered up at all times.
Table 12. Sequencer Selection
Seq1 Seq2 Description
0
0
The channel sequencer is not used. The analog input channel, selected by programming the ADD2 bit to ADD0 bit in the
control register, selects the next channel for conversion.
0
1
Uses the sequence of channels previously programmed into the sequence register for conversion. The AD7327 starts
converting on the lowest channel in the sequence. The channels are converted in ascending order. If uninterrupted, the
AD7327 keeps converting the sequence. The range for each channel defaults to the range previously written into the
corresponding range register.
1
0
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 up to and including 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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