ADG5436F Datasheet, PDF (1/30 Pages) Analog Devices – Fault Protection and Detection, 10 ohm RON, Dual SPDT Switch

Data Sheet
Fault Protection and Detection,
10 Ω R_ON, Dual SPDT Switch
ADG5436F
FEATURES
Overvoltage protection up to −55 V and +55 V
Power-off protection up to −55 V and +55 V
Overvoltage detection on source pins
Interrupt flags indicate fault status
Low on resistance: 10 Ω (typical)
On-resistance flatness of 0.5 Ω (maximum)
6 kV human body model (HBM) ESD rating
Latch-up immune under any circumstance
Known state without digital inputs present
VSS to VDD analog signal range
±5 V to ±22 V dual supply operation
8 V to 44 V single-supply operation
Fully specified at ±15 V, ±20 V, +12 V, and +36 V
APPLICATIONS
Analog input/output modules
Process control/distributed control systems
Data acquisition
Instrumentation
Avionics
Automatic test equipment
Communication systems
Relay replacement
GENERAL DESCRIPTION
The ADG5436F is an analog multiplexer, containing two
independently selectable single-pole, double-throw (SPDT)
switches. An EN input is used to disable all the switches. For use
in multiplexer applications, both switches exhibit break-before-
make switching action.
Each channel conducts equally well in both directions when on,
and each switch has an input signal range that extends to the
supplies. The digital inputs are compatible with 3 V logic inputs
over the full operating supply range.
When no power supplies are present, the switch remains in the off
condition, and the channel inputs are high impedance. Under
normal operating conditions, if the analog input signal level on
any Sxx pin exceeds VDD or VSS by a threshold voltage, VT, the
channel turns off and that Sxx pin becomes high impedance. If
the channel is on, the drain pin reacts according to the drain
response (DR) input pin. If the DR pin is left floating or pulled
high, the drain remains high impedance and floats. If the DR pin
is pulled low, the drain pulls to the exceeded rail. Input signal
levels of up to +55 V or −55 V relative to ground are blocked, in
both the powered and unpowered conditions. The low on
Rev. B
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FUNCTIONAL BLOCK DIAGRAM
ADG5436F
S1A
S2A
D1
D2
S1B
S2B
FAULT
DETECTION
SF
+
SWITCH DRIVER
FF
IN1 IN2 EN DR
NOTES
1. SWITCHES SHOWN FOR A LOGIC 1 INPUT.
Figure 1.
resistance of the ADG5436F, combined with the on-resistance
flatness over a significant portion of the signal range, makes it
an ideal solution for data acquisition and gain switching
applications where excellent linearity and low distortion are
critical.
Note that, throughout this data sheet, the dual function pin names
are referenced only by the relevant function where applicable. See
the Pin Configurations and Function Descriptions section for
full pin names and function descriptions.
PRODUCT HIGHLIGHTS
1. Source pins are protected against voltages greater than the
supply rails, up to −55 V and +55 V.
2. Source pins are protected against voltages between −55 V
and +55 V in an unpowered state.
3. Overvoltage detection with digital output indicates the
operating state of the switches.
4. Trench isolation guards against latch-up.
5. Optimized for low on resistance and on-resistance flatness.
6. The ADG5436F operates from a dual supply of ±5 V up to
±22 V, or a single power supply of 8 V up to 44 V.
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