TFA9842AJ_1 © Koninklijke Philips Electronics N.V. 2006. All rights reserved.
Preliminary specification Rev. 01 — 28 April 2006 7 of 18
Philips Semiconductors
TFA9842AJ
7.5 W stereo power amplifier with volume control
11. Static characteristics
[1] A minimum load of 3 Ω is allowed at supply voltages > 22 V.
[2] The DC output voltage with respect to ground is approximately 0.5V
CC
.
12. Dynamic characteristics
[1] The noise output voltage is measured at the output in a frequency range from 20 Hz to 22 kHz
(unweighted), with a source impedance Z
S
=0Ω at the input.
Table 8. Static characteristics
V
CC
=17V; T
amb
=25
°
C; R
L
=4
Ω
; V
I(VC)
=V
CC
; V
i
= 0 V; measured in test circuit of Figure 11;
unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
CC
supply voltage operating
[1]
91728V
I
q
quiescent current R
L
= ∞Ω - 60 100 mA
I
stb
standby current V
I(VC)
= 0 V - - 150 µA
V
O
output voltage
[2]
-9- V
V
I(VC)
input voltage on pin VC On mode (maximum
gain)
5.0 - V
CC
V
Volume control mode 1.5 - 5.0 V
Mute mode 1.2 - 1.5 V
Standby mode 0 - 0.8 V
I
I(VC)
input current on pin VC 0 V < V
I(VC)
<V
CC
--20µA
Table 9. Dynamic characteristics
V
CC
=17V; T
amb
=25
°
C; R
L
=4
Ω
; f = 1 kHz; V
I(VC)
=V
CC
; measured in test circuit Figure 11;
unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
P
o
output power THD = 10 %; R
L
=4Ω 7 7.5 - W
THD = 0.5 %; R
L
=4Ω - 6.1 - W
THD total harmonic
distortion
P
o
= 1 W - 0.1 0.5 %
G
v(max)
maximum voltage gain V
I(VC)
> 5.0 V 25 26 27 dB
∆G
v
voltage gain range 1.5 V < V
I(VC)
< 5.0 V - 80 - dB
V
i
input voltage Gain = 0 dB;
THD < 1 %
1.0 - - V
Z
i
input impedance 40 60 - kΩ
V
n(o)
noise output voltage
[1]
- 150 - µV
SVRR supply voltage ripple
rejection
f
ripple
= 1 kHz
[2]
-60-dB
f
ripple
= 100 Hz to
20 kHz
[2]
-60-dB
V
o(mute)
mute output voltage
[3]
- - 150 µV
α
cs
channel separation Z
S
=0Ω 50 60 - dB
|∆G
v(max)
| maximum voltage gain
difference
--1dB
