Overview
The DRV602PW, produced by Texas Instruments, is a 3Vrms pop-free stereo line driver designed to enhance audio signal quality and reduce component count. This device utilizes TI's patented DirectPath™ technology, which eliminates the need for output DC-blocking capacitors, thereby reducing cost and complexity. The DRV602PW is capable of driving 3Vrms into a 2.5kΩ load with a 5V supply voltage and features differential inputs with adjustable gain settings using external resistors. It also integrates a charge pump to generate a negative supply rail, ensuring 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) | 3 | 3.3 | 5.5 | V |
| Input Voltage | -0.3 | - | VDD + 0.3 | V |
| Minimum Load Impedance | - | - | 600 | Ω |
| Operating Temperature Range | -40 | - | 85 | °C |
| ESD Protection (IEC 61000-4-2) | - | - | ±8 kV | - |
| Output Voltage into 2.5 kΩ Load | - | 3 Vrms (with 5V supply) | - | Vrms |
| Signal-to-Noise Ratio (SNR) | - | - | 102 dB | - |
| Total Harmonic Distortion + Noise (THD+N) | - | - | 0.05% (20 Hz–20 kHz) | % |
| Unity Gain Bandwidth | - | 8 | - | MHz |
| Open-loop Voltage Gain | - | 150 | - | dB |
Key Features
- DirectPath™ Technology: Eliminates the need for output DC-blocking capacitors, reducing component count and cost.
- Pop-Free Operation: Ensures clean, pop-free ground-biased 3Vrms output with built-in shutdown control for on/off switching.
- Adjustable Gain: External gain setting resistors allow for a gain range of ±1V/V to ±10V/V and the implementation of a 2nd order low-pass filter.
- High Performance: Low noise, high SNR (> 102 dB), and low THD+N (< 0.05% from 20 Hz–20 kHz).
- ESD Protection: ±8 kV IEC ESD protection on output pins.
- Compact Package: Available in a 14-pin TSSOP package.
Applications
- Set-Top Boxes: Ideal for audio output stages in set-top boxes.
- PDP / LCD TV: Suitable for audio systems in plasma and LCD TVs.
- Blu-ray Disc™, DVD-Players: Enhances audio quality in home entertainment systems.
- Home Theater in a Box: Used in integrated home theater systems for improved audio performance.
Q & A
- What is the primary function of the DRV602PW?
The DRV602PW is a 3Vrms pop-free stereo line driver designed to drive audio signals without the need for output DC-blocking capacitors.
- What technology does the DRV602PW use?
The DRV602PW uses Texas Instruments' patented DirectPath™ technology.
- What is the typical output voltage of the DRV602PW into a 2.5 kΩ load?
The typical output voltage is 3 Vrms with a 5V supply voltage.
- What is the signal-to-noise ratio (SNR) of the DRV602PW?
The SNR is greater than 102 dB.
- What is the total harmonic distortion + noise (THD+N) of the DRV602PW?
The THD+N is less than 0.05% from 20 Hz–20 kHz.
- Does the DRV602PW require external DC-blocking capacitors?
No, the DRV602PW does not require external DC-blocking capacitors due to its DirectPath™ technology.
- What is the package type of the DRV602PW?
The DRV602PW is available in a 14-pin TSSOP package.
- What are some common applications of the DRV602PW?
Common applications include set-top boxes, PDP / LCD TVs, Blu-ray Disc™ players, and home theater systems.
- How does the DRV602PW handle ESD protection?
The DRV602PW has ±8 kV IEC ESD protection on its output pins.
- Can the DRV602PW be used as a low-pass filter?
