AD7799BRUZ Analog Devices Inc, AD7799BRUZ Datasheet - Page 20

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AD7799BRUZ

Manufacturer Part Number
AD7799BRUZ
Description
IC ADC 24BIT SIG-DEL 3CH 16TSSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD7799BRUZ

Data Interface
DSP, MICROWIRE™, QSPI™, Serial, SPI™
Number Of Bits
24
Sampling Rate (per Second)
470
Number Of Converters
1
Power Dissipation (max)
2.5mW
Voltage Supply Source
Analog and Digital
Operating Temperature
-40°C ~ 105°C
Mounting Type
Surface Mount
Package / Case
16-TSSOP (0.173", 4.40mm Width)
Resolution (bits)
24bit
Sampling Rate
470SPS
Input Channel Type
Differential
Supply Voltage Range - Analog
2.7V To 5.25V
Supply Voltage Range - Digital
2.7V To 5.25V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
For Use With
EVAL-AD7799EBZ - BOARD EVALUATION FOR AD7799
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Lead free / RoHS Compliant

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AD7798/AD7799
Single-Conversion Mode
In single-conversion mode, the AD7798/AD7799 is placed in
power-down mode after conversions. When a single conversion
is initiated by setting MD2, MD1, and MD0 to 0, 0, and 1 in the
mode register, the AD7798/AD7799 powers up, performs a
single conversion, and then returns to power-down mode. The
on-chip oscillator requires approximately 1 ms to power up. A
conversion requires a time period of 2 × t
low to indicate the completion of a conversion. When the data-
word has been read from the data register, DOUT/ RDY goes
high. If CS is low, DOUT/ RDY remains high until another
conversion is initiated and completed. The data register can be
read several times if required, even when DOUT/ RDY is high.
DOUT/RDY
DOUT/RDY
SCLK
SCLK
DIN
DIN
CS
CS
0x08
ADC
0x200A
. DOUT/ RDY goes
0x58
Figure 17. Continuous Conversion
Figure 16. Single Conversion
Rev. A | Page 20 of 28
DATA
Continuous-Conversion Mode
This is the default power-up mode. The AD7798/AD7799
continuously converts, with the RDY bit in the status register
going low each time a conversion is complete. If CS is low, the
DOUT/ RDY line also goes low when a conversion is complete.
To read a conversion, the user can write to the communication
register, indicating that the next operation is a read of the data
register. The digital conversion is placed on the DOUT/ RDY
pin as soon as SCLK pulses are applied to the ADC. DOUT/ RDY
returns high when the conversion is read. The user can reread
this register if required. However, the user must ensure that the
data register is not accessed at the completion of the next
conversion, or the new conversion word is lost.
0x58
0x58
DATA
DATA

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