HV2705FG-G

Analog Switches - Special Purpose Overview

The HV2705FG-G is a 16-channel high-voltage analog switch IC from Microchip Technology, housed in a 48-lead LQFP package. It features low harmonic distortion and integrated bleed resistors for capacitive loads. The device operates with a logic supply voltage (VDD) ranging from 3 V to 5.5 V and supports dual high-voltage supplies (VPP/VNN) such as +40 V/-160 V, +100 V/-100 V, or +160 V/-40 V. Key electrical parameters include a maximum ON-resistance of 25 Ω at 5 mA signal current, a typical OFF-isolation of -60 dB at 5 MHz, and a maximum clock frequency of 20 MHz. Quiescent power dissipation is 10 µA, with turn-on/turn-off times of 5 µs.

Analog Switches - Special Purpose Feature Summary

• Integrated bleed resistors on outputs to eliminate voltage build-up on capacitive loads like piezoelectric transducers
• Low harmonic distortion design suitable for precision analog signal switching
• Cascadable serial data register with latches for efficient control using low-voltage logic signals
• CMOS logic circuitry providing low power consumption and compatibility with 3.3V input levels

Analog Switches - Special Purpose Applications

• Medical ultrasound imaging systems
• Non-destructive metal flaw detection equipment
• Piezoelectric transducer drivers
• Optical MEMS modules

Analog Switches - Special Purpose Procurement Notes

Verify the specific package variant during procurement, as the datasheet notes that the LQFP package is not recommended for new designs and suggests TQFP as an alternative. Confirm RoHS compliance status through official manufacturer documentation. Ensure that ordering suffixes are validated against the latest product specifications to guarantee functional equivalence and correct pinout configuration.

Analog Switches - Special Purpose Selection Notes

Select the HV2705FG-G when integrated bleed resistors are required to manage voltage accumulation on capacitive loads, distinguishing it from the HV2605 variant. Evaluate the dual supply voltage requirements against application needs, ensuring compatibility with standard combinations like +100V/-100V. Consider the 48-lead LQFP footprint constraints and thermal resistance characteristics for PCB layout planning.

Analog Switches - Special Purpose Part Context

The HV2705FG-G belongs to the HV2605/HV2705 family of 16-channel low harmonic distortion high-voltage analog switches. This series combines high-voltage bilateral DMOS switches with low-power CMOS logic. The FG-G suffix indicates a lead-free, green compound package variant within the LQFP form factor, designed for surface-mount assembly.

Analog Switches - Special Purpose Replacement Considerations

The HV2605FG-G is a direct functional substitute lacking the integrated bleed resistors found in the HV2705. Designers must verify if external bleed resistors are necessary if substituting. The TQFP package variants (e.g., HV2705TQ-G) are recommended alternatives for new designs due to package availability guidance.