HV2802GA-G

Analog Switches - Special Purpose Overview

The HV2802GA-G is a 32-channel SPST high-voltage analog switch manufactured by Microchip Technology. It utilizes HVCMOS technology to combine high-voltage bilateral DMOS switches with low-power CMOS logic, enabling control of high-voltage signals via low-voltage inputs. The device operates on a VDD supply of 3.0V to 5.5V and supports flexible high-voltage combinations such as +40V/-160V, +100V/-100V, and +160V/-40V. It features a serial data shift register with latches for efficient control. Key electrical parameters include a maximum ON-resistance of 48 Ohms, a typical OFF-isolation of -60 dB at 5.0 MHz, and a maximum clock frequency of 20 MHz at 5.0V. The component is housed in a 78-ball VFBGA package.

Analog Switches - Special Purpose Feature Summary

• Integrates 32 independent single-pole single-throw analog switches controlled by a low-voltage CMOS serial interface.
• Employs High-Voltage CMOS (HVCMOS) technology to manage high-voltage analog signals efficiently.
• Features a cascadable 32-bit shift register with latches to minimize clock feedthrough noise during data updates.
• Provides excellent noise immunity and low parasitic capacitance suitable for precision signal routing.

Analog Switches - Special Purpose Applications

• Medical Ultrasound Imaging systems
• Non-Destructive Testing (NDT) Metal Flaw Detection
• Piezoelectric Transducer Drivers
• Inkjet Printer Heads
• Optical MEMS Modules

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 (VFBGA) package configuration. Confirm that the application requires the HV2802 variant without integrated bleed resistors, distinguishing it from the HV2902 model which includes them. Ensure power supply rise and fall times exceed 1.0 ms to prevent latch-up or permanent damage during operation.

Analog Switches - Special Purpose Selection Notes

Select this component when a high channel count is required for multiplexing piezoelectric arrays or transducers. It is appropriate for designs needing independent control of high-voltage channels using standard 3.3V or 5.0V logic levels. Consider the HV2902 if integrated bleed resistors are necessary to discharge capacitive loads, as the HV2802 lacks this feature.

Analog Switches - Special Purpose Part Context

The HV2802GA-G belongs to the HV2802/HV2902 family of low-charge injection analog switches. These devices are designed for applications requiring high-voltage switching controlled by low-voltage signals. The GA-G suffix specifically denotes the 78-ball VFBGA package format used in this part number.

Analog Switches - Special Purpose Replacement Considerations

The HV2902GA-G is a functional substitute within the same package but includes integrated bleed resistors. Verify if the absence of bleed resistors in the HV2802 affects the specific load requirements of the design.

Analog Switches - Special Purpose FAQ

Does the HV2802GA-G have integrated bleed resistors?

No, the HV2802 does not have integrated bleed resistors. This feature is exclusive to the HV2902 variant.

What is the maximum operating clock frequency?

The maximum clock frequency is 20 MHz when the VDD supply is 5.0V. At 3.3V, the maximum frequency is limited to 8 MHz.

How should the Latch Enable (LE) pin be managed to avoid noise?

To reduce clock feedthrough noise, the LE pin should remain high while all 32 bits are shifted into the register. The state change occurs only when LE transitions from high to low.