CD4066B Status: ACTIVE

Product Information

Features

• 15-V Digital or ±7.5-V Peak-to-Peak Switching
• 125- Typical On-State Resistance for 15-V Operation
• Switch On-State Resistance Matched to Within 5 Over 15-V Signal-Input Range
• On-State Resistance Flat Over Full Peak-to-Peak Signal Range
• High On/Off Output-Voltage Ratio: 80 dB Typical at f_is = 10 kHz, R_L = 1 k
• High Degree of Linearity: <0.5% Distortion Typical at f_is = 1 kHz, V_is = 5 V p-p, V_DD–V_SS
• Extremely Low Off-State Switch Leakage, Resulting in Very Low Offset Current and High Effective Off-State Resistance: 10 pA Typical at V_DD–V_SS = 10 V, T_A = 25°C
• Extremely High Control Input Impedance (Control Circuit Isolated From Signal Circuit): 10¹² Typical
• Low Crosstalk Between Switches: –50 dB Typical at f_is = 8 MHz, R_L = 1 k
• Matched Control-Input to Signal-Output Capacitance: Reduces Output Signal Transients
• Frequency Response, Switch on = 40 MHz (Typical)
• 100% Tested for Quiescent Current at 20 V
• 5-V, 10-V, and 15-V Parametric Ratings
• Meets All Requirements of JEDEC Tentative Standard No. 13B, Standard Specifications for Description of B-Series CMOS Devices
• Applications:
  • Analog Signal Switching/Multiplexing:
       Signal Gating, Modulator, Squelch Control, Demodulator, Chopper, Commutating Switch
  • Digital Signal Switching/Multiplexing
  • Transmission-Gate Logic Implementation
  • Analog-to-Digital and Digital-to-Analog Conversion
  • Digital Control of Frequency, Impedance, Phase, and Analog-Signal Gain

Description

CD4066B is a quad bilateral switch intended for the transmission or multiplexing of analog or digital signals. It is pin-for-pin compatible with the CD4016B, but exhibits a much lower on-state resistance. In addition, the on-state resistance is relatively constant over the full input-signal range.

The CD4066B consists of four bilateral switches, each with independent controls. Both the p and the n device in a given switch are biased on or off simultaneously by the control signal. As shown in Figure 1, the well of the n-channel device on each switch is tied to either the input when the switch is on or to V_SS when the switch is off. This configuration eliminates the variation of the switch-transistor threshold voltage with input signal and, thus, keeps the on-state resistance low over the full operating-signal range.

The advantages over single-channel switches include peak input-signal voltage swings equal to the full supply voltage and more constant on-state impedance over the input-signal range. However, for sample-and-hold applications, the CD4016B is recommended.