LAG665

MITSUMI IC for Headphone Stereos LAG665 IC for Headphone Stereos Monolithic IC LAG 665 Outline This IC was developed for use in headphone stereos, and incorporates dual preamp, power amp, electronic VR and motor control circuits. It can be used in a simple circuit configuration which requires very few external components. Features 1. Broad operating voltage range of 2.0 to 5.0 V (amp system operates to 1.8 V) 2. Few external components required 1. Internal equalizer resistance 2. Direct coupling of preamps, electronic VR, power amp 3. No need for output coupling capacitor 3. Well-balanced electronic VR, A-curve attenuation characteristic obtained with B-curve VR 4. Internal motor control circuit, with noise from motor driving unit suppressed 5. Provided with pin to turn off preamps Package SOP-28B (LAG665F) SDIP-30A (LAG665D) Absolute Maximum Ratings Item Operating temperature Storage temperature Power supply current Power consumption Operating voltage Symbol Topr Tstg VCC Pd Vop Ratings -20~+65 -40~+125 -0.3~+7.5 450 (SOP-28B) 750 (SDIP-30A) 2.0~5.0 Units °C °C V mW V MITSUMI IC for Headphone Stereos LAG665 Electrical Characteristics (Except where noted otherwise, Ta=25°C) Item Symbol Measurement conditions Min. Typ. Max. Units Consumption current ICC VIN=0V, IM=0mA 18 25 mA Preamp unit (Ta=25°C) 72 dB Open-circuit gain Gvo Vo=-10dBm, RL=∞ Closed-circuit gain Gvc Vo=-10dBm 40 42 44 dB Maximum output voltage Vom THD=10% 0.45 0.6 Vrms Total harmonic distortion rati...