AD7322 Analog Devices, AD7322 Datasheet - Page 23

• Manufacturer Part Number: AD7322
• Description: Software Selectable True Bipolar Input, 2-Channel, 12-Bit Plus Sign ADC
• Manufacturer: Analog Devices

Specifications of AD7322

• Resolution (bits): 13bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni,SE-Uni
• Ain Range: Bip (Vref),Bip (Vref) x 2,Bip (Vref) x 4,Bip 10V,Bip 2.5V,Bip 5.0V,Uni (Vref) x 4,Uni 10V
• Adc Architecture: SAR
• Pkg Type: SOP

Table 11. Power Mode Selection
PM1
1
1
0
0
Table 12. Sequencer Selection
Seq1
0
1
1
Seq2
X
0
1
PM0
1
0
1
0
Sequence Type
The channel sequencer is not used. The analog channel, selected by programming the ADD0 bit in the control register,
selects the next channel for conversion.
This configuration is used in conjunction with the channel address bit in the control register. This allows continuous
conversions on a consecutive sequence of channels, from Channel 0 up to Channel 1, as selected by the channel address
bits in the control register. The range for each channel defaults to the ranges previously written into the range register.
The channel sequencer is not used. The analog channel, selected by programming the ADD0 bit in the control register,
selects the next channel for conversion.
Description
Full shutdown mode. In this mode, all internal circuitry on the AD7322 is powered down. Information in the control register
is retained when the AD7322 is in full shutdown mode.
Autoshutdown mode. The AD7322 enters autoshutdown on the 15
All internal circuitry is powered down in autoshutdown.
Autostandby mode. In this mode, all internal circuitry is powered down excluding the internal reference. The AD7322
enters autostandby mode on the 15
Normal mode. All internal circuitry is powered up at all times.
th
SCLK rising edge after the control register is updated.
Rev. A | Page 23 of 36
th
SCLK rising edge when the control register is updated.
AD7322