Design with cd4052 upside down in Cirkit DesignerThe CD4052 is a dual 4-channel analog multiplexer/demultiplexer IC. It is commonly used for routing analog or digital signals in electronic circuits. The IC features low on-resistance and high linearity, making it suitable for audio signal processing, sensor signal routing, and data acquisition systems. The "upside-down" orientation refers to the physical placement of the IC in a circuit, but the functionality remains the same.
This circuit features a Nano 33 BLE microcontroller interfaced with a TM1637 4-digit 7-segment display for information output, powered by a 3.7V battery managed by a TP4056 charging module. The microcontroller communicates with the display to present data, while the TP4056 ensures the battery is charged safely and provides power to the system.
Open Project in Cirkit Designer
This circuit features an ESP32 microcontroller interfaced with a water flow sensor to measure flow rates and an OLED display for visual output. A 4060 binary counter IC is configured for timing or frequency division, with its outputs connected to the ESP32. A SN74AHCT125N buffer is used for level shifting or driving capabilities.
Open Project in Cirkit Designer
This circuit features an ESP32 Mini microcontroller as its core, interfaced with a 0.96" OLED display and a DS3231 Real-Time Clock (RTC) for timekeeping and display purposes. A TP4056 module is used for charging a LiPoly battery, which powers the system through an LM2596 voltage regulator and an AMS1117-3.3 voltage regulator to step down and stabilize the voltage for the ESP32 and peripherals. User inputs are captured through a rotary potentiometer and a red pushbutton, which are connected to the ESP32's GPIOs for control and reset functionality.
Open Project in Cirkit Designer
This circuit is a battery-powered system featuring an ESP32 microcontroller that controls an OLED display, a motor driver for two hobby motors, an ultrasonic sensor for distance measurement, and a DFPlayer Mini for audio output through a loudspeaker. The TP4056 module manages battery charging, and a step-up boost converter provides a stable 5V supply to the components.
Open Project in Cirkit DesignerThe CD4052 operates as a dual 4-channel multiplexer/demultiplexer, meaning it can route one of four inputs to a single output (or vice versa) for two independent channels. Below are the key technical details:
The CD4052 is typically available in a 16-pin DIP, SOIC, or TSSOP package. Below is the pinout description:
| Pin Number | Pin Name | Description |
|---|---|---|
| 1 | A | Address select input A (controls channel selection) |
| 2 | EN (Inhibit) | Enable pin (active LOW; disables all channels when HIGH) |
| 3 | X0 | Channel 0 input/output for X |
| 4 | X1 | Channel 1 input/output for X |
| 5 | X2 | Channel 2 input/output for X |
| 6 | X3 | Channel 3 input/output for X |
| 7 | X (Common) | Common input/output for X channels |
| 8 | VSS | Ground (0V) |
| 9 | Y (Common) | Common input/output for Y channels |
| 10 | Y3 | Channel 3 input/output for Y |
| 11 | Y2 | Channel 2 input/output for Y |
| 12 | Y1 | Channel 1 input/output for Y |
| 13 | Y0 | Channel 0 input/output for Y |
| 14 | VDD | Positive supply voltage |
| 15 | B | Address select input B (controls channel selection) |
| 16 | NC | No connection |
The selected channel is determined by the logic levels on the A and B address pins:
| B (Pin 15) | A (Pin 1) | Selected Channel |
|---|---|---|
| 0 | 0 | X0, Y0 |
| 0 | 1 | X1, Y1 |
| 1 | 0 | X2, Y2 |
| 1 | 1 | X3, Y3 |
The CD4052 can be controlled using digital pins on an Arduino UNO. Below is an example code to select channels and read analog signals:
// Define Arduino pins connected to CD4052
const int pinA = 2; // Address pin A
const int pinB = 3; // Address pin B
const int enablePin = 4; // Enable pin (EN)
const int analogInput = A0; // Analog input connected to common pin (X or Y)
void setup() {
// Set pin modes
pinMode(pinA, OUTPUT);
pinMode(pinB, OUTPUT);
pinMode(enablePin, OUTPUT);
// Enable the CD4052
digitalWrite(enablePin, LOW); // Active LOW to enable the IC
// Initialize serial communication for debugging
Serial.begin(9600);
}
void loop() {
for (int channel = 0; channel < 4; channel++) {
// Set address pins to select the channel
digitalWrite(pinA, channel & 0x01); // LSB of channel
digitalWrite(pinB, (channel >> 1) & 0x01); // MSB of channel
// Read the analog signal from the selected channel
int signalValue = analogRead(analogInput);
// Print the signal value to the Serial Monitor
Serial.print("Channel ");
Serial.print(channel);
Serial.print(": ");
Serial.println(signalValue);
delay(500); // Wait for 500ms before switching to the next channel
}
}
No Signal Output:
Signal Distortion:
Incorrect Channel Selection:
Q: Can the CD4052 handle digital signals?
A: Yes, the CD4052 can route both analog and digital signals, provided the signal voltage is within the supply voltage range.
Q: What happens if the EN pin is left floating?
A: The EN pin should not be left floating. It must be tied to either HIGH or LOW to ensure proper operation.
Q: Can I use the CD4052 with a 3.3V microcontroller?
A: Yes, the CD4052 can operate at 3.3V. Ensure that the input signals and supply voltage are compatible with this level.
Q: How do I reduce signal loss in my circuit?
A: Minimize the length of signal traces and use a higher supply voltage (within the IC's limits) to reduce on-resistance.