Datasheet ADG4612, ADG4613 (Analog Devices)

Power-Off Protection ±5 V, +12 V, Quad SPST Switches with 5 Ω On Resistance ADG4612/ADG4613 FEATURES FUNCTIONAL BLOCK DIAGRAM Power-off protection S1 S1 Switch guaranteed off with no power supplies present IN1 IN1 D1 D1 Inputs are high impedance with no power S2 S2 Switch turns off when input > VDD + VT IN2 IN2 Overvoltage protection up to 16 V D2 D2 ADG4612 ADG4613 PSS robust S3 S3 Negative signal capability passes signals down to −5.5 V IN3 IN3 D3 6.1 Ω maximum on resistance D3 S4 S4 1.4 Ω on-resistance flatness IN4 IN4 ±3 V to ±5.5 V dual supply D4 D4 3 V to 12 V single supply
01 0 5-
3 V logic compatible inputs SWITCHES SHOWN FOR A LOGIC 1 INPUT.
00 09
Rail-to-rail operation
Figure 1.
16-lead TSSOP and 16-lead 3 mm × 3 mm LFCSP
The low on resistance of these switches make them ideal
APPLICATIONS
solutions for data acquisition and gain switching applications where low on resistance and distortion is critical. The on-
Hot swap applications
resistance profile is very flat over the full analog input range
Data acquisition systems
ensuring excellent linearity and low distortion when switching
Battery-powered systems
audio signals.
Automatic test equipment Communication systems PRODUCT HIGHLIGHTS Relay replacement
1. Power-Off Protection On Both S and D Pins.
GENERAL DESCRIPTION
2. PSS Robustness. The ADG4612/ADG4613 contain four independent single- 3. Overvoltage Protection up to 16 V. pole/single-throw (SPST) switches. The ADG4612 switches are 4. 5.2 Ω On Resistance. turned on with Logic 1 on the appropriate control input. The ADG4613 has two switches with digital control logic similar to 5. 16-Lead TSSOP and 3 mm × 3 mm LFCSP Packages. 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 VDD by VT, the switch turns off.
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Document Outline FEATURES APPLICATIONS GENERAL DESCRIPTION FUNCTIONAL BLOCK DIAGRAM PRODUCT HIGHLIGHTS TABLE OF CONTENTS SPECIFICATIONS 5 V DUAL SUPPLY 12 V SINGLE SUPPLY 5 V SINGLE SUPPLY CONTINUOUS CURRENT PER CHANNEL, SX OR DX POWER SUPPLY OPERATION ABSOLUTE MAXIMUM RATINGS THERMAL RESISTANCE ESD CAUTION PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TEST CIRCUITS TERMINOLOGY THEORY OF OPERATION Normal Mode Isolation Mode Positive Fault Condition Negative Fault Condition; Negative Signal Handling APPLICATIONS INFORMATION Power Supply Sequencing OUTLINE DIMENSIONS ORDERING GUIDE