STMicroelectronics Intros STG3699/3684 Switches
STMicroelectronics Inc. (ST, Geneva, Switzerland) introduced a pair of SPDT analog switches whose packaging and low insertion losses make them suitable for use in consumer products, including audio and video devices, cellular phones, notebook PCs, personal digital assistants, and many forms of portable instrumentation. The STG3699 is a quad SPDT analog switch and the STG3684 is a dual SPDT analog switch. They include multiple, single-pole dual-trough cells and can work in bi-directional mode, using 1.8V-compatible digital control pins. The switches are housed in a 3mm x 3mm QFN package.
The on-resistance of the devices is less than 0.5 Ohm, reducing distortion to a minimum in audio circuits, ensuring high-fidelity signal routing for products such as cellular phones. The low on-resistance of the parts also means low insertion losses in video applications. Switching times are less than 300ps. The on-resistance of the switches is matched to within 0.06 Ohm, which is useful when switching differential signals.
The parts operate at supply voltages of between 1.65V and 3.6V and are designed to support high currents up to ±500mA 10% duty cycle. Current consumption is less than 1mA, making the parts suitable for use in battery-powered systems. The products are available now at prices ranging from $1.00 to $1.20 for quantities of 1,000.
