Design with TS3A5018 analog switch in Cirkit DesignerThe TS3A5018 is a low-voltage, dual-channel analog switch designed for routing analog signals in a variety of applications. It features low on-resistance (RON) and low power consumption, making it an ideal choice for battery-operated devices. The switch is controlled by a digital signal, allowing seamless integration into digital circuits. Its compact design and high performance make it suitable for applications such as audio signal routing, data acquisition systems, and portable electronics.
This circuit features an Arduino Micro connected to three CD74HC4067 multiplexers, which are used to expand the number of analog inputs. Multiple potentiometers and toggle switches are connected to the multiplexers, allowing the Arduino to read various analog signals and switch states for further processing.
Open Project in Cirkit Designer
This circuit appears to be a configurable encoder system with an RF transmission capability. The encoder's address pins (A0-A7) are connected to a DIP switch for setting the address, and its data output (DO) is connected to an RF transmitter, allowing the encoded signal to be wirelessly transmitted. The circuit is powered by a 9V battery, regulated to 5V by a 7805 voltage regulator, and includes a diode for polarity protection. Tactile switches are connected to the encoder's data inputs (D1-D3), and an LED with a current-limiting resistor indicates power or activity.
Open Project in Cirkit Designer
This circuit consists of two toggle switches and a red lamp connected to panel mount banana sockets. The switches control the connection between the red and black banana sockets, allowing the lamp to be turned on or off depending on the switch positions.
Open Project in Cirkit Designer
This circuit features an Arduino Nano microcontroller interfaced with a 4-position DIP switch through a series of 4.7k Ohm resistors. The DIP switch positions are read by the analog pins A0 to A3 of the Arduino, allowing the microcontroller to detect the state of each switch.
Open Project in Cirkit DesignerThe TS3A5018 is a versatile component with the following key specifications:
| Parameter | Value |
|---|---|
| Supply Voltage (VDD) | 1.65V to 3.6V |
| On-Resistance (RON) | 0.8Ω (typical) at VDD = 3.0V |
| On-Resistance Flatness | 0.1Ω (typical) |
| Signal Range | 0V to VDD |
| Control Input Voltage | 0V to VDD |
| Bandwidth | 300 MHz |
| Quiescent Current (IQ) | 1 µA (typical) |
| Operating Temperature Range | -40°C to +85°C |
| Package Options | TSSOP-10, QFN-10 |
The TS3A5018 is available in a 10-pin package. Below is the pinout and description:
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | IN1 | Control input for switch 1 |
| 2 | COM1 | Common terminal for switch 1 |
| 3 | NO1 | Normally open terminal for switch 1 |
| 4 | GND | Ground |
| 5 | VDD | Positive supply voltage |
| 6 | NO2 | Normally open terminal for switch 2 |
| 7 | COM2 | Common terminal for switch 2 |
| 8 | IN2 | Control input for switch 2 |
| 9 | NC | No connection |
| 10 | NC | No connection |
The TS3A5018 can be controlled by an Arduino UNO to switch analog signals. Below is an example circuit and code:
// Example code to control TS3A5018 analog switch with Arduino UNO
#define SWITCH1_CONTROL 7 // Pin connected to IN1
#define SWITCH2_CONTROL 8 // Pin connected to IN2
void setup() {
pinMode(SWITCH1_CONTROL, OUTPUT); // Set pin 7 as output
pinMode(SWITCH2_CONTROL, OUTPUT); // Set pin 8 as output
// Initialize both switches to OFF state
digitalWrite(SWITCH1_CONTROL, LOW);
digitalWrite(SWITCH2_CONTROL, LOW);
}
void loop() {
// Turn ON switch 1
digitalWrite(SWITCH1_CONTROL, HIGH);
delay(1000); // Keep switch 1 ON for 1 second
// Turn OFF switch 1 and turn ON switch 2
digitalWrite(SWITCH1_CONTROL, LOW);
digitalWrite(SWITCH2_CONTROL, HIGH);
delay(1000); // Keep switch 2 ON for 1 second
// Turn OFF both switches
digitalWrite(SWITCH2_CONTROL, LOW);
delay(1000); // Wait for 1 second before repeating
}
Switch Not Responding to Control Signal
Signal Distortion
Excessive Power Consumption
Signal Voltage Exceeds VDD
Q1: Can the TS3A5018 handle digital signals?
A1: Yes, the TS3A5018 can route digital signals as long as the voltage levels are within the 0V to VDD range.
Q2: What is the maximum frequency the TS3A5018 can handle?
A2: The TS3A5018 has a bandwidth of 300 MHz, making it suitable for high-frequency signals.
Q3: Can I use the TS3A5018 with a 5V supply?
A3: No, the maximum supply voltage for the TS3A5018 is 3.6V. Using a 5V supply may damage the component.
Q4: How do I reduce noise in my circuit?
A4: Use a 0.1 µF decoupling capacitor near the VDD pin and keep traces short to minimize noise.