Overview
The DRV602PWR, produced by Texas Instruments, is a 3Vrms pop-free stereo line driver designed using TI's patented DirectPath™ technology. This device is capable of driving 3Vrms into a 2.5kΩ load with a 5V supply voltage, eliminating the need for output DC-blocking capacitors and reducing component count and cost. The DRV602 integrates its own charge pump to generate a negative supply rail, providing a clean, pop-free ground-biased 3Vrms output without requiring a split rail power supply or a power supply greater than 5V.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage (VDD to GND) | -0.3 | 5.5 | V | |
| Input Voltage (VI) | VSS - 0.3 | VDD + 0.3 | V | |
| Minimum Load Impedance (RL) | 600 | Ω | ||
| Maximum Operating Junction Temperature (TJ) | -40 | 150 | °C | |
| Output Voltage into 2.5kΩ Load | 3 | Vrms | ||
| Signal-to-Noise Ratio (SNR) | 102 | dB | ||
| Total Harmonic Distortion + Noise (THD+N) | 0.05% | % (20Hz–20kHz) | ||
| Supply Current (IDD) | 8 | 11 | 20 | mA (VDD = 3.3V, No load, EN = VDD) |
| Shutdown Current | 2 | mA (VDD = 3V to 5V) |
Key Features
- DirectPath™ Technology: Eliminates pop/clicks and output DC-blocking capacitors, providing a flat frequency response from 20Hz to 20kHz.
- Adjustable Gain: Supports a gain range of ±1V/V to ±10V/V using external gain setting resistors.
- Low Noise and THD: Typical noise voltage (VN) < 15 mVrms and THD+N < 0.05% over 20Hz–20kHz.
- Pop-Free On/Off Control: Built-in shutdown control for pop-free on/off operation.
- High ESD Protection: ±8kV IEC ESD protection on output pins.
- Compact Package: Available in a 14-pin TSSOP package.
- External Filter Capability: Can be used as a 2nd order low-pass filter to complement DACs and SOC converters.
Applications
- Set-Top Boxes: Ideal for audio output stages in set-top boxes.
- PDP / LCD TV: Suitable for audio applications in plasma and LCD TVs.
- Blu-ray Disc™, DVD-Players: Used in audio output stages of Blu-ray and DVD players.
- Home Theater in a Box: Applicable in home theater systems for high-quality audio output.
Q & A
- What is the maximum output voltage of the DRV602PWR?
The DRV602PWR can drive up to 3Vrms into a 2.5kΩ load with a 5V supply voltage.
- What is the purpose of the DirectPath™ technology in the DRV602PWR?
The DirectPath™ technology eliminates pop/clicks and output DC-blocking capacitors, providing a flat frequency response.
- How does the DRV602PWR achieve pop-free on/off control?
The device has built-in shutdown control that ensures pop-free on/off operation by keeping the EN pin low during power supply ramp up and down.
- What is the recommended operating temperature range for the DRV602PWR?
The recommended operating temperature range is from -40°C to 85°C.
- What is the typical supply current of the DRV602PWR?
The typical supply current is 11 mA with a 3.3V supply voltage and no load.
- Can the DRV602PWR be used as a low-pass filter?
Yes, the DRV602PWR can be used as a 2nd order low-pass filter to complement DACs and SOC converters.
- What is the ESD protection level of the DRV602PWR?
The DRV602PWR has ±8kV IEC ESD protection on output pins.
- What package type is the DRV602PWR available in?
The DRV602PWR is available in a 14-pin TSSOP package.
- How does the DRV602PWR handle capacitive loads?
The DRV602PWR can drive a high capacitive load up to 220pF directly; higher loads can be handled by adding a series resistor.
- What are some common applications of the DRV602PWR?
Common applications include set-top boxes, PDP/LCD TVs, Blu-ray and DVD players, and home theater systems.
