INTEGRATED CIRCUITS
DATA SHEET
TDA8551 1 W BTL audio amplifier with digital volume control
Product specification Super...
INTEGRATED CIRCUITS
DATA SHEET
TDA8551 1 W BTL audio amplifier with digital volume control
Product specification Supersedes data of 1997 May 07
1998 Feb 23
NXP Semiconductors
1 W BTL audio amplifier with digital volume control
Product specification
TDA8551
FEATURES
One pin digital volume control Volume setting with UP/DOWN pulses Flexibility in use Few external components Low saturation
voltage of output stage Standby mode controlled by
CMOS compatible levels Low standby current No switch-on/switch-off plops High supply
voltage ripple rejection Protected against electrostatic discharge Outputs short circuit safe to ground, VP and across the
load Thermally protected.
GENERAL DESCRIPTION
The TDA8551; TDA8551T is a one channel 1 W Bridge-Tied Load (BTL) audio power amplifier capable of delivering 1 W output power to an 8 Ω load at THD = 10% using a 5 V power supply. The circuit contains a BTL power amplifier, a digital volume control and standby/mute logic. The TDA8551T comes in an 8 pin SO package and the TDA8551 in a 8 pin DIP package.
APPLICATIONS
Portable consumer products Personal computers Telephony.
QUICK REFERENCE DATA
SYMBOL
VP Iq Istb Po Gv nvol THD SVRR
PARAMETER supply
voltage quiescent current standby current output power
voltage gain number of volume steps total harmonic distortion supply
voltage ripple rejection
CONDITIONS VP = 5 V THD = 10%; RL = 8 Ω; VP = 5 V
Po = 0.5 W
MIN.
2.7 − − 1 −60 − − 48
TYP.
5 6 − 1.4 − 64 0.15...