ADG7421F

RECOMMENDED FOR NEW DESIGNS

Low Voltage Fault Protection and Detection, 12 Ω RON, Dual SPST Switch

Part Models
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1ku List Price
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Part Details

  • Overvoltage fault protection up to ±60 V on S1 and S2 pins
  • Power-off protection up to ±60 V on S1 and S2 pins
  • Overvoltage detection on S1 and S2 pins
  • Known state output without digital inputs present
  • Low on resistance: 12 Ω typical
  • Ultraflat, on resistance: 0.005 Ω typical
  • Low fault detection threshold voltage: 0.1 V typical
  • 3 kV HBM ESD rating
  • Latch-up immune under any circumstance
  • ±1.8 V to ±2.5 V dual supply operation
  • 1.8 V to 5.5 V single-supply operation
  • 10-Lead, 3 mm × 2 mm LFCSP
ADG7421F
Low Voltage Fault Protection and Detection, 12 Ω RON, Dual SPST Switch
ADG7421F Functional Block Diagram ADG7421F Pin Configuration
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Hardware Ecosystem

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Tools & Simulations

LTspice 1


Models for the following parts are available in LTspice:

  • ADG7421F

IBIS Model 1

LTspice

LTspice® is a powerful, fast and free simulation software, schematic capture and waveform viewer with enhancements and models for improving the simulation of analog circuits.


Evaluation Kits

eval board
EVAL-ADG7421F

Evaluating the ADG7421F Low Voltage Fault Protection and Detection, 12 Ω RON, Dual SPST Switch

Features and Benefits

  • Supply voltages
  • Dual supply: ±1.8 V to ±2.5 V
  • Single supply: 1.8 V to 5.5 V
  • Protected against overvoltage on source pins
  • Signal voltages up to −60 V and +60 V
  • LED for visual overvoltage indication
  • Parallel interface compatible with 1.8 V logic

Product Details

The EVAL-ADG7421FEBZ is the evaluation board for the ADG7421F, which features two single-pole/single-throw (SPST) switch channels. The ADG7421F has overvoltage detection and protection circuitry on the source pins and is protected against signals up to −60 V and +60 V in both the powered and unpowered states.

Figure 1 shows the EVAL-ADG7421FEBZ in a typical evaluation setup. The ADG7421F is soldered to the center of the evaluation board, and two wire screw terminals are provided to connect to each of the source and drain pins. Three screw terminals are used to power the device. A fourth terminal is used to provide a user defined digital voltage, to supply the LED, which is mounted to provide visual indication of the fault status of the switch.

Full specifications on the ADG7421F are available in the product data sheet, which must be consulted in conjunction with this user guide when using the evaluation board.

EVAL-ADG7421F
Evaluating the ADG7421F Low Voltage Fault Protection and Detection, 12 Ω RON, Dual SPST Switch
EV-ADG7421FEBZ Evaluation Board EV-ADG7421FEBZ Evaluation Board - Top View EV-ADG7421FEBZ Evaluation Board - Bottom View EVAL-ADG7421FEBZ, Power Supply, and Signal Generator

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