AD7834 Analog Devices, AD7834 Datasheet - Page 19

• Manufacturer Part Number: AD7834
• Description: LC2MOS Quad 14-Bit DAC
• Manufacturer: Analog Devices

Specifications of AD7834

• Resolution (bits): 14bit
• Dac Update Rate: 100kSPS
• Dac Settling Time: 10µs
• Max Pos Supply (v): +15.75V
• Single-supply: No
• Dac Type: Voltage Out
• Dac Input Format: Ser

POWER-ON OF THE AD7834/AD7835
Power is normally applied to the AD7834/AD7835 in the
following sequence: first V
V
power is applied to the part. V
V
V
In some systems, it is necessary to introduce one or more
Schottky diodes between pins to prevent the above situations
arising at power-on. These diodes are shown in Figure 25.
However, in most systems, with careful consideration given to
power supply sequencing, the above rules are adhered to, and
protection diodes are not necessary.
REF
REF
DD
(+) and V
(−) − 0.3 V. V
is not allowed to go below V
REF
(−). The V
REF
(−) is not allowed to go below V
DD
REF
and V
pins are not allowed to float when
REF
(+) is not allowed to go below
CC
− 0.3 V.
SS
, then V
CC
, and then
SS
− 0.3 V.
Rev. D | Page 19 of 28
1
ADDITIONAL PINS OMITTED FOR CLARITY
Figure 25. Power-On Protection
AD7834
V
V
REF
REF
(+)
(–)
1
AD7834/AD7835
SD103C
1N5711
1N5712