ADG751ARMZ

Overview

The ADG751ARMZ is a low voltage single pole single throw (SPST) analog switch manufactured by Analog Devices Inc. It utilizes a T-switch configuration to achieve high off isolation and wide signal bandwidth while maintaining low on-resistance. The device operates on a single supply ranging from +1.8 V to +5.5 V, making it suitable for battery-powered applications. Key electrical parameters include an on-resistance of 35 Ω maximum at +25°C and 40 Ω maximum at +85°C (Grade A), with typical switching times of 9 ns for turn-on and 3 ns for turn-off. It features –75 dB off-isolation at 100 MHz and a –3 dB bandwidth of 300 MHz. The component is housed in an 8-lead mini small outline package (mSOIC).

Feature Summary

• T-switch architecture provides enhanced off-isolation and frequency response.
• Compatible with TTL and CMOS logic levels for digital control.
• Capable of handling bidirectional signals up to the supply rails.
• Designed for low power dissipation in portable instruments.

Applications

• Audio and video signal routing
• RF switching circuits
• Relay replacement in control systems
• Sample-and-hold data acquisition systems

Procurement Notes

Verify the specific ordering suffix to confirm the package type and reel quantity. Ensure the grade matches the required temperature range and resistance specifications. Confirm RoHS compliance status if environmental regulations apply to the assembly process. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity and traceability.

Selection Notes

Select this component when high off-isolation and wide bandwidth are critical for RF or video signal integrity. Consider the mSOIC package dimensions for space-constrained PCB layouts. Evaluate the on-resistance flatness requirements against the application's signal range. Verify that the supply voltage aligns with the system's available power rails.

Part Context

The ADG751 belongs to Analog Devices' family of low voltage CMOS analog switches. It is designed for applications requiring fast switching speeds and minimal power consumption. The device complements other SPST and multiplexer solutions in the portfolio, offering a compact form factor suitable for modern electronic designs.

Replacement Considerations

Direct substitutes within the same package and pinout should be verified against the official datasheet. Check for equivalent on-resistance, leakage currents, and switching speeds. Ensure compatibility with existing logic levels and supply voltages before implementing any alternative components.