AD7719BR Analog Devices Inc, AD7719BR Datasheet - Page 25

• Manufacturer Part Number: AD7719BR
• Description: IC ADC 16BIT 24BIT DUAL 28-SOIC
• Manufacturer: Analog Devices Inc

Specifications of AD7719BR

• Number Of Bits: 16/24
• Sampling Rate (per Second): 105
• Data Interface: DSP, MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Converters: 2
• Power Dissipation (max): 4.5mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 28-SOIC (0.300", 7.50mm Width)
• For Use With: EVAL-AD7719EB - BOARD EVAL FOR AD7719
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Bit
Location
IOCON15
IOCON14
IOCON13
IOCON12
IOCON11
IOCON10
IOCON9
IOCON8
IOCON7
IOCON6
IOCON5
IOCON4
IOCON3
IOCON2
IOCON1
IOCON0
REV. A
Bit
Name
PSW2
PSW1
0
BO
I2PIN
I1PIN
I2EN
I1EN
P4DIR
P3DIR
P2EN
P1EN
P4DAT
P3DAT
P2DAT
P1DAT
Table XVI. IOCON (I/O and Current Source Control Register) Bit Designations
Description
Power Switch 2 Control Bit.
Set by user to enable power switch P2 to PWRGND.
Cleared by user to enable use as a standard I/O pin.
When the ADC is in standby mode, the power switches are open.
Power Switch 1 Control Bit.
Set by user to enable power switch P1 to PWRGND.
Cleared by user to enable use as a standard I/O pin.
When ADC is in standby mode, the power switches are open.
This bit must be zero for correct operation.
Burnout Current Enable Bit.
Set by user to enable the 100 nA current sources in the main ADC signal path. A 100 nA current source is
applied to the positive input leg while a 100 nA sink is applied to the negative input.
Cleared by user to disable both transducer burnout current sources.
IEXE2, 200 µA Current Source Direction Bit.
Set by user to enable IEXC2 current source to IOUT1.
Cleared by user to enable IEXC2 current source to IOUT2.
IEXE1, 200 µA Current Source Direction Bit.
Set by user to enable IEXC1 current source to IOUT2.
Cleared by user to enable IEXC1 current source to IOUT1.
IEXC2 Current Source Enable Bit.
Set by user to turn on the IEXC2 excitation current source.
Cleared by user to turn off the IEXC2 excitation current source.
IEXC1 Current Source Enable Bit.
Set by user to turn on the IEXC1 excitation current source.
Cleared by user to turn off the IEXC1 excitation current source.
P4, I/O Direction Control Bit.
Set by user to enable P4 as an output.
Cleared by user to enable P4 as an input. There are weak active pull-ups internally when enabled as an input.
P3, I/O Direction Control Bit.
Set by user to enable P3 as an output.
Cleared by user to enable P3 as an input. There are weak active pull-ups internally when enabled as an input.
P2 Digital Output Enable Bit.
Set by user to enable P2 as a regular digital output pin.
Cleared by user to three-state P2 output.
PSW2 takes precedence over P2EN.
P1 Digital Output Enable Bit.
Set by user to enable P1 as a regular digital output pin.
Cleared by user to three-state P1 output.
PSW1 takes precedence over P1EN.
Digital I/O Port Data Bits.
The readback values of these bits indicate the status of their respective pin when the I/O port is active as
an input.
The values written to these data bits appear at the output port when the I/O bits are enabled as outputs.
P2 and P1 are outputs only, so reading P2DAT and P1DAT will return what was last written to these bits.
–25–
AD7719