The Vishay DG534ADJ-E3 is a high-performance monolithic analog multiplexer/demultiplexer designed for precision signal routing in both digital and analog systems. This device integrates four independent single-pole, single-throw (SPST) switches in a compact package, enabling flexible configuration for signal multiplexing, analog signal routing, and test instrumentation. Its architecture emphasizes low on-resistance, fast switching speeds, and minimal signal distortion, making it suitable for audio, video, and data acquisition applications. The DG534ADJ-E3 also offers low power consumption and high reliability over a wide range of operating conditions.

## Device Overview

The DG534ADJ-E3 is based on CMOS technology, providing rail-to-rail analog signal transmission. It operates from a single-supply or dual-supply voltage, allowing compatibility with a wide range of digital and analog systems. Its internal design ensures low charge injection and low crosstalk between channels, which is critical in precision analog systems. The device features a low-voltage logic interface compatible with TTL and CMOS logic families, facilitating seamless integration with microcontrollers, FPGAs, and other logic devices.

## Key Specifications

* Device Type: Quad SPST analog switch
* Analog Signal Range: ±15 V (dual supply) or 0–30 V (single supply)
* On-Resistance (Rds(on)): 30 Ω typical at Vdd = 15 V
* On-Resistance Flatness: 10 Ω typical across analog input range
* Maximum Continuous Current (Imax): 50 mA per switch
* Off-Leakage Current (Ioff): ±100 nA at 25°C, ±1 μA max at 85°C
* On-Leakage Current (Ion): ±500 nA at 25°C
* Switching Time (tON/tOFF): 90 ns typical
* Charge Injection: 5 pC typical
* Capacitance Between Switch Terminals: 20 pF typical
* Logic Input Levels: TTL/CMOS compatible, Vih = 2 V minimum, Vil = 0.8 V maximum
* Supply Voltage (Vdd – Vss): 10 V to 36 V single supply or ±5 V to ±15 V dual supply
* Operating Temperature Range (TA): −40°C to +85°C
* Package Type: SOIC-16 or TSSOP-16 depending on configuration
* Power Dissipation: 300 mW typical

## Electrical Characteristics

The DG534ADJ-E3 features low on-resistance with minimal variation across the input voltage range, ensuring accurate signal transmission with low distortion. The device exhibits minimal leakage currents, making it suitable for high-impedance signal routing and precision measurement circuits. Switching times are fast, with typical turn-on and turn-off times of 90 ns, supporting high-frequency applications without significant signal degradation. The low charge injection characteristic ensures minimal transient disturbance when switching sensitive analog signals.

## Switching and Signal Performance

The switch provides near-ideal analog behavior with low series resistance, low capacitance, and excellent linearity. Crosstalk between channels is typically −80 dB at 1 MHz, minimizing signal interference in multiplexed systems. Total harmonic distortion is negligible, making it suitable for audio and low-distortion data acquisition applications. The device can pass both analog and digital signals up to several megahertz without introducing significant attenuation or phase shift.

## Thermal and Reliability Characteristics

Thermal resistance junction-to-ambient (RthJA) is 120 K/W in standard SOIC-16 PCB layout, allowing for moderate power dissipation without active cooling. The device maintains stable performance across its full operating temperature range of −40°C to +85°C. It is capable of withstanding typical power-on and power-off transients, and the CMOS fabrication ensures robustness against latch-up and electrostatic discharge up to ±2 kV HBM.

## Applications

* Audio and video signal routing
* Precision data acquisition systems and instrumentation
* Multiplexed sensor arrays
* Communication systems requiring low crosstalk
* Microcontroller-based analog signal switching
* Test and measurement equipment requiring high linearity

## Package and Mechanical Data

The DG534ADJ-E3 is offered in compact SOIC-16 or TSSOP-16 packages, supporting surface-mount technology for dense PCB layouts. Pin assignments follow a standard quad switch configuration with separate enable inputs for flexible control. The package ensures low parasitic capacitance and optimal thermal performance, allowing designers to integrate multiple switches in a small footprint without compromising electrical performance.

## Summary

The Vishay DG534ADJ-E3 provides a combination of low on-resistance, high-speed switching, and low charge injection in a robust CMOS analog switch design. Its wide analog range, precision signal handling, and TTL/CMOS logic compatibility make it ideal for high-performance multiplexing applications in audio, video, and precision instrumentation. The device’s thermal stability, low leakage, and low crosstalk characteristics enable reliable operation across demanding electrical and environmental conditions, making it a versatile solution for complex analog signal routing systems.