Datasheet

Data Sheet ADA4433-1
Rev. 0 | Page 11 of 16
ESD PROTECTION
All pins on the ADA4433-1 are protected with internal ESD
protection structures connected to the power supply pins (+V
S
and GND). These structures provide protection during the
handling and manufacturing process.
The outputs (+OUT and −OUT) can be exposed to dc voltages
well above the supply voltage in an overvoltage event; therefore,
conventional ESD structure protection cannot be used. Instead,
the outputs are protected by Analog Devices proprietary ESD
devices, which allow protection and recovery from an overvoltage
event while providing ESD protection well beyond the handling
and manufacturing requirements.
ENABLE/DISABLE MODES (ENA PIN)
The power-down or enable/disable (ENA) pin is internally pulled
up to +V
S
through a 250 kΩ resistor. When the voltage on this
pin is high, the amplifier is enabled; pulling ENA low disables
the ADA4433-1, reducing the supply current to a very low 13.5 µA.
With no external connection, this pin floats high, enabling the
amplifier.
Table 6. ENA Pin Function
ENA Pin Input Device State
High (Logic 1) Enabled
Low (Logic 0) Disabled
High-Z (Floating) Enabled
OPERATING SUPPLY VOLTAGE RANGE
The ADA4433-1 is specified over an operating supply voltage
range of 2.7 V to 3.6 V. This range establishes the nominal
utilization voltage at which the device performs in conformance
with its specifications. The operating supply voltage refers to
sustained voltage levels and not to a momentary voltage
excursion that can occur due to variation in the output of the
supply regulator. When the device is operating at the limits of the
operating supply voltage range (2.7 V and 3.6 V), excursions
lower than the minimum of 2.7 V and higher the maximum of
3.6 V must be no greater than 4%. Supply voltage excursions
greater than 4% (but less than the absolute maximum) can lead
to some performance degradation; however, they do not damage
the device.