General Description

The APA2174 is a stereo, single supply and cap-free line driver, which is available in TQFN4x4-20B, TSSOP-16, and SOP-14 packages.

The APA2174 is a ground-reference output and doesn’t need the output capacitors for DC blocking. The advantages of eliminating the output capacitor are saving the cost, eliminating component height, and improving the low frequency response.

Features

• Operating Voltage: 2.3V-4.5V

• Supply Current

- IDD=5mA at VDD=3.3V

• Low Shutdown Current

- IDD=1mA at VDD=3.3V

• Ground Reference Output

- No Output Capacitor Required (for DC Blocking)

- Save the PCB Space

- Reduce the BOM Costs

- Improve the Low Frequency Response

• Output Voltage Swing Can Reach 2Vrms/Ch into 600W at VDD=3.3V

• High PSRR: 90dB at 217Hz

• Fast Start-Up Time: 500ms

• Integrate the De-pop Circuitry

• Separate Shutdown Function for Flexible Application

• Thermal Protection

• Surface-Mount Packaging

- TQFN4x4-20B (with Enhanced Thermal Pad)

- TSSOP-16

- SOP-14

• Lead Free and Green Devices Available (RoHS Compliant)

Applications

• Set-Top Boxes

• CD / DVD Players

• LCD TVs

• HTIBs (Home Theater in Box)