MP4864A SPST Analog Switch

MP4864A SPST Analog Switch

The MP4864A is a 64-channel, high-voltage, single-pole single-throw (SPST) analog switch with integrated output bleed resistors designed for medical ultrasound imaging applications.

Key Specifications

Features

• No High-Voltage Supplies Required
• 64 Channels
• Up to ±90V Analog Signals
• 14Ω Typical Switch Resistance
• ±2.0A Typical Switch Peak Current
• Off-Isolation of -66dB at 5MHz
• Integrated Output Bleed Resistors
• 80MHz Clock Frequency
• Available in a BGA-144 (10mmx10mm) Package

Typical Application Circuit

Applications

• Medical Ultrasound Imaging

Design Notes

• Check the input common-mode range against the actual signal, especially in single-supply rails where ground-referenced signals sit at the edge.
• Capacitive load drives stability; add series isolation when driving cables or ADC inputs directly.
• Offset voltage and its drift, not gain bandwidth, usually set the achievable accuracy in DC instrumentation.
• Decouple at the pin with the smallest package capacitor that meets the transient requirement, returned to a local ground.

Common Questions