TDA8551_T_15 Datasheet, PDF (7/18 Pages) NXP Semiconductors – 1 W BTL audio amplifier with digital volume control

NXP Semiconductors
1 W BTL audio amplifier with digital volume
control
Product specification
TDA8551
Notes to the Characteristics
1. With a load connected at the outputs the quiescent current will increase, the maximum of this increase being equal
to the DC output offset voltage divided by R_L.
2. The DC output voltage with respect to ground is approximately 0.5V_P.
3. Output voltage in mute position is measured with an input of 1 V (RMS), including noise, in a bandwidth of 20 kHz.
4. Total gain setting at +20 dB.
5. The noise output voltage is measured at the output in a frequency band from 20 Hz to 20 kHz (unweighted), input
source impedance R_source = 0 Ω.
6. Supply voltage ripple rejection is measured at the output, with a source impedance of R_source = 0 Ω at the input.
The ripple voltage is a sine wave with frequency of 1 kHz and an amplitude of 100 mV (RMS) is applied to the positive
supply rail.
handbook, full pagewidth
VP
Vth(UP)
Vfloat(max)
VUP/DOWN
Vfloat(min)
Vth(DOWN)
0
tr
trep
tw
increasing volume
floating
decreasing volume
t
tr
trep
tw
MGK365
The rise time (t_r) and the width of the pulse (t_w) are not critical.
Fig.3 Timing UP/DOWN pin.
1998 Feb 23
7