Headphone Stereos Monolithic IC
MITSUMI
IC for Headphone Stereos LAG673
IC for Headphone Stereos
Monolithic IC LAG673
Outline
This IC was developed f...
Description
MITSUMI
IC for Headphone Stereos LAG673
IC for Headphone Stereos
Monolithic IC LAG673
Outline
This IC was developed for use in 3 V headphone stereos. It incorporates dual preamp, power amp, electronic volume and motor control circuits; because it requires extremely few external components, it can be used in a simple circuit configuration.
Features
1. Broad operating voltage range of 2.0 to 5.0 V 2. Few external components required 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. Fast forward possible using the forced-on pin
Package
SOP-28B (LAG673F) SDIP-30A (LAG673D)
Absolute Maximum Ratings
Item Operating temperature Storage temperature Power supply current Operating voltage Power consumption Symbol TOPR TSTG VCC Vop Pd Ratings -20~+65 -40~+125 -0.3~+7.5 2.0~5.0 450 (SOP-28B) 750 (SDIP-30A) Units
°C °C
V V mW
MITSUMI
IC for Headphone Stereos LAG673
Electrical Characteristics
(Except where noted otherwise, Ta=25°C) Symbol ICC Measurement conditions VIN=0V, IM=0mA Vo=-10dBm, RL=∞ Vo=-10dBm 40 THD=10% 0.30 VOUT=400mVrms VIN=0V, Rg=2.2kΩ, BPF=30Hz~20kHz VOUT=-10dBm 18 Rg=2.2kΩ, VOUT=-10dBm 30 VIN=100mVrms Min. Typ. Max. Units 18 25 mA
Item Consumption current (excluding motor speed controller unit) Preamp unit (Ta=25°C) Open-circuit gain Closed-circuit gain Maximum output voltage Total harmonic distortion ratio Output noise voltage Input imp...
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