HV232FG-G

Analog Switches - Special Purpose Overview

The HV232FG-G is an 8-channel high-voltage analog switch IC manufactured by Microchip Technology, housed in a 48-lead LQFP package. It utilizes HVCMOS technology to combine bilateral DMOS switches with low-power CMOS logic. The device operates on dual supplies ranging from -160V to +40V and accepts logic control signals between 4.5V and 13.2V. Key electrical parameters include a maximum on-resistance of 25 Ohms, a peak output current of 3.0A per channel, and a small-signal frequency response up to 50MHz. Integrated bleed resistors manage capacitive loads, while the internal shift register and latch allow serial data control.

Analog Switches - Special Purpose Feature Summary

• Integrates eight independent high-voltage bilateral DMOS switches controlled by low-voltage CMOS logic circuitry.
• Features integrated bleed resistors on outputs to eliminate voltage buildup on capacitive loads such as piezoelectric transducers.
• Includes on-chip 8-bit shift register and latch logic for serial data input retention and clock feed-through noise reduction.
• Provides high isolation and low parasitic capacitances suitable for high-frequency signal switching applications.

Analog Switches - Special Purpose Applications

• Medical ultrasound imaging systems
• Piezoelectric transducer drivers
• High-voltage printer circuits

Analog Switches - Special Purpose Procurement Notes

Verify component authenticity through authorized Microchip distributors or direct manufacturer channels. Confirm RoHS compliance status and lead-free packaging specifications against the latest datasheet revisions. Ensure supply chain documentation matches the specific ordering suffix and package variant required for your design implementation.

Analog Switches - Special Purpose Selection Notes

Select this component when designing circuits requiring high-voltage analog signal routing controlled by standard logic levels. Verify that the dual power supply configuration meets the operational requirements of your target application. Consider the thermal resistance characteristics of the LQFP package for adequate heat dissipation during continuous operation at maximum load conditions.

Analog Switches - Special Purpose Part Context

This part belongs to the HV232 family of low charge injection analog switches produced by Supertex, now part of Microchip Technology. The FG suffix specifically denotes the 48-lead Low-Profile Quad Flat Package (LQFP) option. This family is engineered for robust performance in demanding environments where high voltage isolation and precise signal control are critical.

Analog Switches - Special Purpose Replacement Considerations

Direct replacements within the same package and pinout include the HV232PJ-G in a 28-lead PLCC package, though physical dimensions differ. Other compatible devices in the series may require schematic adjustments due to varying channel counts or package footprints. Always verify pin compatibility before substitution.

Analog Switches - Special Purpose FAQ

What is the function of the integrated bleed resistors?

The integrated bleed resistors provide a discharge path for stored charge on capacitive loads, such as piezoelectric transducers, preventing voltage buildup when the switch is off.

How does the device handle serial data input?

Input data is shifted into an 8-bit shift register via DIN and CLK pins. The data is then retained in an 8-bit latch upon the rising edge of the LE signal, controlling the state of the eight switches.

What is the maximum operating frequency for small signals?

The device supports a DC to 50MHz small signal frequency response, allowing it to switch high-voltage analog signals at frequencies up to 50kHz under specified duty cycles.