Philips Semiconductors
Controller class-D audio amplifier
Preliminary specification
TDA8929T
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP. MAX. UNIT
SVRR
Zi
Vn(o)
Vo
CMRR
supply voltage ripple rejection
input impedance
noise output voltage
output signal
common mode rejection ratio
on; fi = 100 Hz; note 3
−
on; fi = 1 kHz; note 3
36
mute; fi = 100 Hz; note 3
−
standby; fi = 100 Hz; note 3
−
23
on; Rs = 0 Ω; B = 22 Hz to 22 kHz −
on; Rs = 10 kΩ; B = 22 Hz to 22 kHz −
mute; note 4
−
mute; Vi = Vi(max) = 1 V (RMS)
−
Vi = 1 V (RMS)
−
49
−
dB
44
−
dB
49
−
dB
80
−
dB
34
−
kΩ
280 500 µV
300 −
µV
280 −
µV
−
500 µV
75
−
dB
Notes
1. VP = ±25 V; fi = 1 kHz; Tamb = 25 °C; measured in Fig.10; unless otherwise specified.
2. THD is measured in a bandwidth of 22 Hz to 22 kHz. When distortion is measured using a low-order low-pass filter
a significantly higher value will be found, due to the switching frequency outside the audio band.
3. Vripple = Vripple(max) = 2 V (p-p); Rs = 0 Ω.
4. B = 22 Hz to 22 kHz and independent of Rs.
5. VP = ±25 V; fi = 1 kHz; Tamb = 25 °C; measured in reference design in Fig.12; unless otherwise specified.
handbook, full pagewidth
on
mute
standby
Vth1−
Vth1+
VMODE(hys1)
Vth2−
Vth2+
VMODE(hys2)
Fig.6 Mode pin selection.
VMODE
MGW334
2001 Dec 11
14