AD7367-5ARUZ-REEL7 AD [Analog Devices], AD7367-5ARUZ-REEL7 Datasheet - Page 14

• Manufacturer Part Number: AD7367-5ARUZ-REEL7
• Description: True Bipolar Input, Dual 1us, 14-Bit, 2-Channel SAR ADC
• Manufacturer: AD [Analog Devices]

AD7367
another conversion, as shown in Figure 8. See the Power up
POWER-UP TIMES
The AD7367 has one power down mode, which has already
been described in detail. This section deals with the power-up
time required when coming out of this modes. It should be
noted that the power-up time, as explained in this section,
applies with the recommended capacitors in place on the D
and D
be brought high and remain high for a minimum of 100μs, as
shown in Figure 8.
When power supplies are first applied to the AD7367, the ADC
may power up with CONVST in either the low or high logic
state. Before attempting a valid conversion CONVST must be
brought high and remain high for the recommended power up
time of 100μs, it can then be brought low to initiate a
CONVST
BUSY
SCLK
CS
CAP
B pins. To power up from shut-down, CONVST must
t 2
t convert
Figure 8. Auto-Shutdown Mode
ENTERS SHUT-DOWN
CAP
Rev. PrD | Page 14 of 16
A
1
t 3
time section for power-up times associated with the AD7367.
conversion. With the AD7367 no dummy conversion is
required before valid data can be read from the
is intended to place the part in shut-down mode when the
supplies are first applied, then the AD7367 must be powered up
as explained about and a conversion initiated, but CONVST
should remain in the logic low state and when the BUSY signal
goes low thus the part enters shut-down.
Once supplies are applied to the AD7367, enough time must be
allowed for any external reference to power up and charge the
various reference buffer decoupling capacitors to their final values.
14
Preliminary Technical Data
SERIAL READ OPERATION
t power-up
D
OUT
pins. If it