GP8102S-TC50-EW Digital PWM to Analog Signal Converter Chip SOP8

Description

GP8102S-TC50-EW Digital PWM to Analog Signal Converter Chip SOP8

Here are the detailed specifications for the GP8102S-TC50-EW Digital PWM to Analog Signal Converter IC (SOP-8 package):

GP8102S-TC50-EW Key Specifications

Manufacturer: ChipHC (Chip-Hai Technology)
Package: SOP-8
Type: High-resolution PWM to voltage/current converter

1. Electrical Characteristics

• Supply Voltage: 3.0V to 5.5V

• PWM Input Frequency: 1Hz to 1MHz

• Output Options:

  • Voltage Output: 0–5V (default) or 0–10V (with external divider)

  • Current Output: 0–20mA or 4–20mA (with external transistor)

• Resolution: 16-bit effective (0.0015% FSR)

• Linearity Error: ±0.1% FSR (typical)

• Output Ripple: <10mV (typical)

• Power Consumption: <3mA (operating)

2. Pinout (SOP-8)

3. Key Features

• High Precision: 16-bit DAC equivalent performance

• Wide PWM Frequency Range: 1Hz to 1MHz

• Low Output Ripple: Built-in filtering

• Multiple Output Ranges: Configurable via ADJ pin

• Temperature Range: -40°C to +85°C

4. PWM to Voltage Conversion

• Duty Cycle to Voltage:

0% duty cycle → 0V output
100% duty cycle → 5V output (default)

• Linear Transfer: VOUT = (Duty Cycle) × VREF

5. Typical Applications

• LED dimming control

• Motor speed control

• Analog signal generation from microcontrollers

• Industrial process control (4–20mA loops)

• Voltage-controlled oscillators (VCOs)

6. External Components Required

• Power Supply: 3.3V or 5V stable supply

• Filter Capacitor: 1µF–10µF on VCC pin

• Output Filter: 0.1µF ceramic capacitor on VOUT

Arduino Example Code

// Generate PWM for GP8102S (0-5V output)
const int pwmPin = 9; // Arduino PWM pin

void setup() {
pinMode(pwmPin, OUTPUT);
// Set PWM frequency to ~1kHz (compatible with GP8102S)
analogWriteFrequency(pwmPin, 1000);
}

void setVoltage(float voltage) {
// Convert voltage (0-5V) to PWM duty cycle (0-255)
int duty = map(voltage * 100, 0, 500, 0, 255);
analogWrite(pwmPin, duty);
}

void loop() {
setVoltage(2.5); // Output 2.5V
delay(1000);
setVoltage(5.0); // Output 5.0V
delay(1000);
}

Configuration Options

1. 0–5V Output (default): Connect ADJ pin to GND

2. 0–10V Output: Use external voltage divider on ADJ pin

3. Current Output: Add NPN transistor and sense resistor

Performance Characteristics

• Setting Time: <10ms (to within 1% of final value)

• Temperature Coefficient: ±50ppm/°C

• Long-Term Stability: ±0.05% per 1000 hours

Advantages over Traditional PWM+RC Filter

✅ Higher precision (16-bit vs 8–10 bit)
✅ Lower output ripple (active filtering)
✅ Faster response (digital calibration)
✅ Smaller footprint (SOP-8 vs discrete components)