TI CD4066BMT

The CD4066B device is a quad bilateral switch for analog or digital signal transmission or multiplexing. The device is pin-to-pin compatible with the CD4016B but features a much lower on-state resistance. In addition, the on-state resistance is relatively constant over the full signal input range.

The CD4066B contains four bilateral switches, each with an independent control. The control signal simultaneously biases the p- and n-devices on or off in a given switch. The well of the n-channel device in each switch is connected to the input (when the switch is on) or to VSS (when the switch is off). This configuration prevents the threshold voltage of the switching transistors from varying with the input signal, resulting in low on-state resistance over the entire operating signal range.

Advantages over single-channel switches include a peak input signal voltage swing equal to the maximum supply voltage and a more constant on-state impedance over the input signal range. However, for sample-and-hold applications, the CD4016B device is recommended.

Bidirectional signal transmission via digital control logic

• 15V digital or ±7.5V peak-to-peak switching supply voltage
• Typical on-state resistance of 125Ω at 15V supply voltage
• Matched switch on-resistance variation ≤5Ω over 15V signal input range
• Low on-state resistance flatness over full peak-to-peak signal range
• High switch output voltage ratio: typical 80dB at fis = 10kHz, RL = 1kΩ
• Highly linear: typical distortion <0.5% at fis = 1kHz, Vis = 5Vₚ₋ₚ, VDD - VSS ≥ 10V, RL = 10kΩ
• Ultra-low off-state switch leakage for minimal offset current and high effective off-state resistance: typical 10pA at VDD - VSS = 10V, TA = 25℃
• Ultra-high control input impedance (control circuit isolated from signal circuit): typical 10¹²Ω
• Low inter-switch crosstalk: typical –50dB at fis = 8MHz, RL = 1kΩ
• Matched control input-to-signal output capacitance: reduces output signal transient frequency response, turn-on = 40MHz (typical)
• 100% tested for quiescent current at 20V
• 5V, 10V, and 15V parametric ratings

• Analog signal switching and multiplexing: signal gating, modulators, squelch control, demodulators, choppers, commutating switches
• Digital signal switching and multiplexing
• Transmission gate logic implementation
• Analog-to-digital and digital-to-analog conversion
• Digital control of frequency, impedance, phase, and analog signal gain
• Building automation