9397 750 12847 © Koninklijke Philips Electronics N.V. 2004. All rights reserved.
Preliminary data sheet Rev. 01 — 1 March 2004 7 of 17
Philips Semiconductors
TFA9842BJ
2-channel auto amplifier (2 × SE)
11. Static characteristics
[1] A minimum load of 3 Ω is allowed at V
CC
>22V.
[2] With a load connected at the outputs the quiescent supply current will increase.
[3] 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 R
source
=0Ω at the input.
Table 8: Static characteristics
V
CC
=17V; T
amb
=25
°
C; R
L
=4
Ω
; V
MODE
=V
CC
; V
i
= 0 V; measured in test circuit Figure 12;
unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
V
CC
supply voltage operating
[1]
91726V
I
q
quiescent
supply current
R
L
= ∞Ω
[2]
- 60 100 mA
I
stb
standby supply
current
V
MODE
=0V - - 10 µA
V
O
DC output
voltage
[3]
-9-V
V
MODE
mode selection
input voltage
on mode V
CC
− 2.0 - V
CC
V
mute mode 4.5 - V
CC
− 3.5 V
standby mode 0 - 0.8 V
I
MODE
input current on
pin MODE
0V<V
MODE
<(V
CC
− 3.5) - - 20 µA
Table 9: Dynamic characteristics
V
CC
=17V; T
amb
=25
°
C; R
L
=4
Ω
; f = 1 kHz; V
MODE
=V
CC
; measured in test circuit Figure 12;
unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
P
o
output power THD = 10 % 7 7.5 - W
THD = 0.5 % - 6.1 - W
THD total harmonic
distortion
P
o
= 1 W - 0.1 0.5 %
G
v
voltage gain 25 26 27 dB
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)
output voltage in
mute mode
[3]
- - 150 µV
α
cs
channel
separation
R
source
=0Ω 50 60 - dB
|Gv| channel
unbalance
--1dB
