MAX4968AECM+

Analog Switches, Multiplexers, Demultiplexers Overview

The MAX4968AECM+ is a 16-channel, high-linearity, high-voltage bidirectional SPST analog switch. It operates with a logic supply (VDD) of +2.37V to +5.5V, a positive supply (VPP) of +9.5V to +10.5V, and a negative supply (VNN) of -200V to 0V. The device features an on-resistance (RONS) of 18Ω typical and 34Ω maximum, with channel-to-channel matching of 3%. It includes integrated 40kΩ bleed resistors for load discharge. The small-signal bandwidth reaches 50MHz, while the large-signal bandwidth is 30MHz. Charge injection is 150pC, and off-isolation is -76dB at 5MHz. It utilizes a 25MHz serial interface and is housed in a 48-LQFP package.

Analog Switches, Multiplexers, Demultiplexers Feature Summary

• Integrated 40kΩ bleed resistors on each switch terminal to discharge capacitive loads
• Controlled by low-voltage signals without requiring dedicated high-voltage supplies
• Guaranteed on-resistance flatness across the entire input voltage range
• Daisy-chainable serial interface for connecting multiple devices

Analog Switches, Multiplexers, Demultiplexers Applications

• Medical Ultrasound Imaging
• Nondestructive Testing (NDT)/Industrial Ultrasound Imaging
• Printers

Analog Switches, Multiplexers, Demultiplexers Procurement Notes

Verify the component against official Analog Devices documentation to confirm pinout compatibility and electrical specifications. Ensure that the VPP and VNN supply voltages align with system requirements before integration. Cross-reference the ordering suffix to verify lead-free status and package type. Confirm thermal resistance values for PCB layout planning.

Analog Switches, Multiplexers, Demultiplexers Selection Notes

Select the MAX4968AECM+ when integrated bleed resistors are required to discharge piezoelectric transducers or capacitive loads. This variant differs from the standard MAX4968 only by the inclusion of these resistors. Verify that the control logic operates within the specified VDD range and that the serial interface timing meets the setup and hold requirements.

Analog Switches, Multiplexers, Demultiplexers Part Context

The MAX4968AECM+ belongs to the MAX4968 family of high-voltage analog switches manufactured by Analog Devices/Maxim Integrated. It is designed for applications requiring high-voltage switching controlled by low-voltage logic. The 'A' designation indicates the presence of internal bleed resistors, distinguishing it from the base MAX4968 model which lacks this feature.

Analog Switches, Multiplexers, Demultiplexers Replacement Considerations

The MAX4968AECM+ is pin-to-pin compatible with the MAX14803 and Supertex HV2701. These substitutes share the same low +10V VPP supply requirement. Verify that the replacement part supports the specific negative supply voltage range and signal integrity requirements of the target application.