TDA8551 Datasheet, PDF (2/20 Pages) NXP Semiconductors – 1 W BTL audio amplifier with digital volume control

Philips 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, V_P 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
V_P
I_q
I_stb
P_o
G_v
n_vol
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
MIN.
2.7
V_P = 5 V
−
−
THD = 10%; R_L = 8 Ω; V_P = 5 V 1
−60
−
P_o = 0.5 W
−
48
TYP.
5
6
−
1.4
−
64
0.15
−
MAX. UNIT
5.5 V
10
mA
10
µA
−
W
+20 dB
−
−
%
−
dB
ORDERING INFORMATION
TYPE
NUMBER
TDA8551T
TDA8551
NAME
SO8
DIP8
PACKAGE
DESCRIPTION
plastic small outline package; 8 leads; body width 3.9 mm
plastic dual in-line package; 8 leads (300 mil)
VERSION
SOT96-1
SOT97-1
1998 Feb 23
2