TDA8920 Datasheet, PDF (2/16 Pages) NXP Semiconductors – 2 x 50 W class-D power amplifier

Philips Semiconductors
2 × 50 W class-D power amplifier
Preliminary specification
TDA8920
FEATURES
• High efficiency (90%)
• Operating voltage from ±15 V to ±30 V
• Very low quiescent current
• Low distortion
• Fixed gain of 30 dB
• High output power
• Output power limiter
• Good ripple rejection
• Usable as a mono amplifier in Bridge-Tied Load (BTL) or
as a stereo Single-Ended (SE) amplifier
• Tracking possibility for oscillator frequency
• Differential audio inputs
• No switch-on or switch-off plops
• Short-circuit proof across the load
• Electrostatic discharge protection on all pins
• Thermally protected.
APPLICATIONS
• Television sets
• Home-sound systems
• Multimedia systems.
GENERAL DESCRIPTION
The TDA8920 is a high efficiency class-D audio power
amplifier. It can be used in a mono Bridge-Tied Load (BTL)
or in a stereo Single-Ended (SE) configuration. The device
operates over a wide supply voltage range from
±15 V up to ±30 V and consumes a very low quiescent
current.
QUICK REFERENCE DATA
SYMBOL
PARAMETER
General
V_DD
I_q(tot)
η
operating supply voltage
total quiescent current
efficiency
Stereo single-ended configuration
P_o
G_v(cl)
Z_i
V_n(o)
SVRR
α_cs
output power
closed loop voltage gain
input impedance
noise output voltage
supply voltage ripple rejection
channel separation
Mono bridge-tied load configuration
P_o
G_v(cl)
Z_i
V_n(o)
SVRR
∆V_O
output power
closed loop voltage gain
input impedance
noise output voltage
supply voltage ripple rejection
DC output offset voltage
CONDITIONS
P_o = 10 W
THD = 10%
THD = 10%
MIN. TYP. MAX. UNIT
±15 ±25 ±30 V
−
50
60
mA
85
90
−
%
tbf
35
−
W
29
30
31
dB
80
120 −
kΩ
−
100 −
µV
60
−
−
dB
50
tbf
−
dB
−
130 −
W
35
36
37
dB
40
60
−
kΩ
−
140 −
µV
66
−
−
dB
−
−
50
mV
1998 Dec 01
2