HV2903/AHA

Analog Switches - Special Purpose Overview

The HV2903/AHA is a 32-channel high-voltage analog switch manufactured by Microchip Technology, housed in a 132-ball TFBGA package. It operates with a logic supply voltage (VLL) of 3 V to 3.6 V and dual supplies (VDD/VSS) ranging from ±4.5 V to ±6.3 V. The device supports ±100 V analog signal transmission without requiring dedicated high-voltage power rails. Key electrical parameters include a maximum on-resistance of 15 Ω, a data shift clock frequency up to 66 MHz, and an operating temperature range of 0°C to +70°C.

Analog Switches - Special Purpose Feature Summary

• Integrates bleed resistors at both sides of the switches to eliminate voltage build-up on capacitive loads
• Supports individual switching mode for independent control or bank switching mode for probe selection
• Utilizes Silicon-on-Insulator (SOI) technology for high performance and low harmonic distortion
• Features a cascadable serial data register with latches for daisy-chain configuration

Analog Switches - Special Purpose Applications

• Medical ultrasound imaging systems
• Nondestructive testing metal flaw detection
• Piezoelectric transducer drivers
• Inkjet printer heads
• Optical MEMS modules

Analog Switches - Special Purpose Procurement Notes

Verify the specific suffix 'AHA' against the manufacturer's official documentation to confirm package type and temperature grade. Ensure that the ordering information matches the exact part number required for your design specifications. Cross-reference the datasheet revision to confirm all electrical characteristics are current before finalizing procurement.

Analog Switches - Special Purpose Selection Notes

Select the HV2903 variant specifically when integrated bleed resistors are required on both output terminals to manage capacitive loads. Compare this model against the HV2803, which lacks bleed resistors, and the HV2904, which has them on only one side. Ensure the application requires the specific 132-ball TFBGA package format provided by this part number.

Analog Switches - Special Purpose Part Context

This component belongs to the HV2803/HV2903/HV2904 family of high-voltage analog switches. These devices are designed to replace mechanical relays in applications requiring high-voltage switching controlled by low-voltage signals. The family shares common architecture but differs in bleed resistor integration and channel configurations.

Analog Switches - Special Purpose Replacement Considerations

HV2803/AHA: Identical package and logic, but lacks integrated bleed resistors. HV2904/AHA: Includes bleed resistors, but only on one side of the switches rather than both.