TB2173FTG Datasheet, PDF (1/19 Pages) Toshiba Semiconductor – 2-Source Stereo Headphone Amplifier

TOSHIBA Bi-CMOS Integrated Circuit Silicon Monolithic
TB2173FTG
2-Source Stereo Headphone Amplifier
TB2173FTG
The TB2173FTG is a stereo headphone amplifier IC that can
accept two sources, developed for portable audio systems.
It is particularly ideal for digital portable audio systems having
built-in tuners.
Features
• Accepts headphone amplifier inputs from two sources
• Selectable headphone amplifier output: Output coupling or
OCL
• Incorporates beep circuit
• Incorporates power switch (controlled using port or command)
• Supports power muting (controlled using port or command)
• Features with single source only (tuner mode):
• Electronic volume
Provides logic reset feature
• Low-frequency boost (with AGC)
• Two port expansion circuits
• Operating supply voltage range: Ta = 25°C
VDD (opr) = 1.8 to 4.5 V
VCC1 (opr) = 1.8 to 4.5 V
VCC2 (opr) = 0.9 to 4.5 V
Note: Use the device with V_CC1 greater than or equal to V_CC2.
Weight: 0.05 g (typ.)
Product indication: B2173G
• Handle the product with great care because its surge resistance is low.
• Ensure that the product is mounted correctly.
Otherwise, the product or connected equipment may get damaged or degrade.
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2006-04-19