HV2902GA-G

Analog Switches - Special Purpose Overview

The HV2902GA-G is a 32-channel Single-Pole Single-Throw (SPST) high-voltage analog switch manufactured by Microchip Technology. It utilizes High-Voltage CMOS technology to manage high-voltage bilateral DMOS switches controlled by low-voltage logic signals. The device operates with a logic supply voltage between 3.0V and 5.5V, while supporting dual high-voltage supplies ranging from -160V to +40V. Key electrical parameters include a maximum on-resistance of 48 Ohms, a typical off-isolation of -60 dB at 5.0 MHz, and a serial clock frequency up to 20 MHz. It features integrated bleed resistors for capacitive loads and is housed in a 78-ball VFBGA package.

Analog Switches - Special Purpose Feature Summary

• Integrated 35 kOhm bleed resistors connect all analog switch terminals to ground to eliminate voltage build-up on capacitive loads like piezoelectric transducers.
• Features a cascadable 32-bit shift register with latches for efficient serial data control and simultaneous state updates across all channels.
• Utilizes High-Voltage CMOS technology to combine high-performance bilateral DMOS switches with low-power CMOS logic circuitry.

Analog Switches - Special Purpose Applications

• Medical Ultrasound Imaging
• Non-Destructive Testing Metal Flaw Detection
• Piezoelectric Transducer Drivers
• Inkjet Printer Heads

Analog Switches - Special Purpose Procurement Notes

Verify the specific ordering suffix 'GA-G' corresponds to the 78-ball Very Thin Fine Pitch Ball Grid Array package. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure design accounts for moisture sensitivity levels as indicated in the datasheet specifications.

Analog Switches - Special Purpose Selection Notes

Select the HV2902GA-G over the HV2802 variant when integrated bleed resistors are required to discharge capacitive loads such as piezoelectric elements. Verify that the application requires 32 independent SPST channels and supports the specified high-voltage differential supply range. Ensure the PCB layout accommodates the 9x9 mm VFBGA footprint.

Analog Switches - Special Purpose Part Context

This component belongs to the HV2802/HV2902 family of low-charge injection analog switches. The HV2902 variant is distinguished by its internal bleed resistors, whereas the HV2802 lacks this feature. Both share identical pinouts and control logic but differ in output handling capabilities for specific load types.

Analog Switches - Special Purpose Replacement Considerations

The HV2802GA-G is a functional substitute if integrated bleed resistors are not required by the circuit design. Other members of the HV2XXX series may offer different channel counts or package options but require verification of pin compatibility and electrical characteristics.