ADG5404F Datasheet, PDF (1/30 Pages) Analog Devices – Fault Protection and Detection, 10 ohm RON, 4-Channel Multiplexer

Data Sheet
Fault Protection and Detection,
10 Ω R_ON, 4-Channel Multiplexer
ADG5404F
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)
4 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 ADG5404F is an analog multiplexer composed of four
single channels with fault protected inputs. The ADG5404F
switches one of the four inputs to a common drain, D, as
determined by the 2-bit binary address lines (A0 and A1). An
enable digital input, EN, is used to disable all the switches. 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 levels on
any Sx pin exceed VDD or VSS by a threshold voltage, VT, the
channel turns off and that Sx 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 up to +55 V or −55 V relative to ground are blocked, in
both the powered and unpowered conditions.
Rev. B
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FUNCTIONAL BLOCK DIAGRAM
ADG5404F
S1
S2
D
S3
S4
FAULT
DETECTION
FF
+ SWITCH
DRIVER
SF
A0/F0 A1/F1 EN DR
Figure 1.
The low on resistance of the ADG5404F, combined with 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 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
operating state of switches.
4. Trench isolation guards against latch-up.
5. Optimized for low on resistance and on-resistance flatness.
6. The ADG5404F 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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