PT2308 Headphone Driver IC DESCRIPTION PT2308 is a Class AB stereo headphone driver chip utilizing CMOS Technology specially designed for portable digital audio applications. It is housed in an 8-pin DIP or SOP package and is functionally compatible with TDA1308. Pin assignments and application circuit are optimized for lower cost effectiveness and easy PCB Layout. FEATURES • • • • • • • CMOS technology Low power consumption Wide temperature range Excellent power supply ripple rejection High signal-to-noise ratio, S/N=110dB Low harmonic distortion, THD=0.001% Large output voltage swing APPLICATIONS • • • • Portable digital audio Hi-fi audio system Walkman CD-ROM BLOCK DIAGRAM APPLICATION CIRCUIT Tel: 886-66296288‧Fax: 886-29174598‧ http://www.princeton.com.tw‧2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan PT2308 ORDER INFORMATION Valid Part Number PT2308 PT2308-S Package Type 8 Pins, DIP, 300mil 8 Pins, SOP, 150mil Top Code PT2308 PT2308-S PIN CONFIGURATION PIN DESCRIPTION Symbol OUT1 IN1IN1+ VSS IN2+ IN2OUT2 VDD V1.4 I/O O I I I I O - Description Output pin 1 Inverting input pin 1 Non-inverting input pin 1 Negative power supply Non-inverting input pin 2 Inverting input pin 2 Output pin 2 Positive power supply Pin No. 1 2 3 4 5 6 7 8 2 PT2308 ABSOLUTE MAXIMUM RATINGS Parameter Supply voltage Symbol VDD Ratings 8 Unit V Operating temperature Topr -40∼+85 ℃ Storage temperature Tstg -65∼+150 ℃ ELECTRICAL CHARACTERISTICS (Unless otherwise stated, VDD=5V, VSS=0V, Ta=25℃, fin=1KHz, RL=32Ω) Parameter Symbol Conditions Min. Signal supply voltage Typ. Max. 3.0 5.0 7.0 1.5 2.5 3.5 VDD - Negative power voltage Supply current Total power dissipation Maximum output power VSS IDD Ptot Po No Load No Load - -1.5 - -2.5 7.0 35 60 -3.5 - Vo(p-p)=3.5V - 0.03 0.06 Total harmonic distortion THD Dual supply voltage Signal-to-noise ratio S/N Channel separation αcs Unit V V mA mW mW % Vo(p-p)=3.5V RL=5KΩ - - 0.001 - 100 110 - - - 70 - RL=5KΩ - 105 - dB dB Power supply ripple rejection PSRR fin=100Hz; Vripple(p-p)=100mV - 90 - dB Maximum input voltage Output resistance VImax ROUT THD<0.1% - - 1.4 2 - V Ω V1.4 3 PT2308 PACKAGE INFORMATION 8 PINS, DIP, 300MIL Symbol A A1 A2 b c D E E1 e L Min. 0.50 3.10 0.38 0.21 9.10 7.62 6.25 2.92 Millimeter Nom. 3.30 9.20 7.87 6.35 2.54BSC 3.30 Max. 4.80 3.50 0.55 0.35 9.30 8.25 6.45 3.81 Notes: 1. Refer to JEDEC MS-001, Variation BA 2. All dimensions are in millimeter V1.4 4 PT2308 8 PINS, SOP, 150MIL Symbol Notes: 1. Refer to JEDEC MS-012AA 2. All dimensions are in millimeter V1.4 A A1 A2 b c D E E1 e L θ Min. 1.35 0.10 1.25 0.31 0.17 4.80 5.80 3.80 0.40 0° Millimeter Nom. 1.27BSC - Max. 1.75 0.25 1.65 0.51 0.25 5.00 6.20 4.00 1.27 8° 5 PT2308 IMPORTANT NOTICE Princeton Technology Corporation (PTC) reserves the right to make corrections, modifications, enhancements, improvements, and other changes to its products and to discontinue any product without notice at any time. PTC cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a PTC product. No circuit patent licenses are implied. Princeton Technology Corp. 2F, 233-1, Baociao Road, Sindian, Taipei 23145, Taiwan Tel: 886-2-66296288 Fax: 886-2-29174598 http://www.princeton.com.tw V1.4 6