Power-Off Protection ±5 V, +12 V, Quad
SPST Switches with 5 Ω On Resistance
ADG4612/ADG4613
FEATURES
Power-off protection
Switch guaranteed off with no power supplies present
Inputs are high impedance with no power
Switch turns off when input > V
DD
+ V
T
Overvoltage protection up to 16 V
PSS robust
Negative signal capability passes signals down to −5.5 V
6.1 Ω maximum on resistance
1.4 Ω on-resistance flatness
±3 V to ±5.5 V dual supply
3 V to 12 V single supply
3 V logic compatible inputs
Rail-to-rail operation
16-lead TSSOP and 16-lead 3 mm × 3 mm LFCSP
FUNCTIONAL BLOCK DIAGRAM
S1
IN1
D1
S2
IN2
IN2
D2
S3
IN3
D3
S4
IN4
D4
SWITCHES SHOWN FOR A LOGIC 1 INPUT.
IN4
D4
09005-001
S1
IN1
D1
S2
D2
S3
D3
S4
ADG4612
ADG4613
IN3
Figure 1.
APPLICATIONS
Hot swap applications
Data acquisition systems
Battery-powered systems
Automatic test equipment
Communication systems
Relay replacement
The low on resistance of these switches make them ideal
solutions for data acquisition and gain switching applications
where low on resistance and distortion is critical. The on-
resistance profile is very flat over the full analog input range
ensuring excellent linearity and low distortion when switching
audio signals.
PRODUCT HIGHLIGHTS
1.
2.
3.
4.
5.
Power-Off Protection On Both S and D Pins.
PSS Robustness.
Overvoltage Protection up to 16 V.
5.2 Ω On Resistance.
16-Lead TSSOP and 3 mm × 3 mm LFCSP Packages.
GENERAL DESCRIPTION
The ADG4612/ADG4613 contain four independent single-
pole/single-throw (SPST) switches. The ADG4612 switches are
turned on with Logic 1 on the appropriate control input. The
ADG4613 has two switches with digital control logic similar to
that of the ADG4612; the logic is inverted on the other two
switches. Each switch conducts equally well in both directions
when on, and each switch has an input signal range that extends
to the supplies. The ADG4613 exhibits break-before-make
switching action for use in multiplexer applications.
When no power supplies are present, the switch remains in the
off condition, and the switch inputs are high impedance inputs,
ensuring that no current flows, which can damage the switch or
downstream circuitry. This is very useful in applications where
analog signals may be present at the switch inputs before power
is applied or where the user has no control over the power supply
sequence.
In the off condition, signal levels up to 16 V are blocked. Also,
when the analog input signal levels exceed V
DD
by V
T
, the switch
turns off.
Rev. 0
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