TDF8555J NXP Semiconductors, TDF8555J Datasheet - Page 37

• Manufacturer Part Number: TDF8555J
• Description: The TDF8555J is one of a new generation of complementary quad Bridge-Tied Load(BTL) audio power amplifiers with full I²C-bus controlled diagnostics, multiple voltageregulator and two power switches intended for automotive applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 25.
Refer to test circuit (see
guaranteed for T
TDF8555J
Product data sheet
Symbol
Diagnostics
V
V
THD
T
T
G
I
Amplifier
P
P
THD

o
j(AV)(pwarn)
j(AV)(G(0.5dB)
cs
OL(DIAG)
O(offset_det)
o
o(max)
(th_fold)
clip
Amplifier characteristics
Parameter
LOW-level output voltage on
pin DIAG
output voltage at offset
detection
total harmonic distortion clip
detection level
pre-warning average
junction temperature
average junction
temperature for 0.5 dB gain
reduction
gain reduction of thermal
foldback
output current
output power
maximum output power
total harmonic distortion
channel separation
j
=

40

Figure
C to +150
29) at T

C; functionality guaranteed for V
…continued
amb
All information provided in this document is subject to legal disclaimers.
= 25
peak current
R
P
Conditions
fault condition (pin LOW); I
V
IB4[D7] = 1
IB3[D7] = 0; IB4[D7] = 0
IB3[D7] = 1; IB4[D7] = 0
IB3[D4] = 0
IB3[D4] = 1
V
when all channels switch off
R
R
R
R
square wave
R
square wave
R
square wave
P
line driver mode; V
4 V (RMS)
low gain mode; P
f
R
i
P
i
o
o

L
L
L
L
L
L
L
= 1 kHz; R
S
Rev. 1 — 15 September 2011
AC-load detected; IB4[D5] = 0
AC-load detected; IB4[D5] = 1
no AC-load detected; IB4[D5] = 0
no AC-load detected; IB4[D5] = 1
f
f
= 0.05 V
C; V
i
i
= 1 W to 12 W; f
= 1 W to 12 W; f
> 10 V
= 4 ; V
= 4 ; V
= 2 ; V
= 2 ; V
= 4 ; V
= 4 ; V
= 2 ; V
= 1 k; R
= 1 kHz
= 10 kHz
P
= 14.4 V; unless otherwise specified. Tested at T
4 45 W power amplifier with multiple voltage regulator
P
P
P
P
P
P
P
L
ACGND
= 14.4 V; THD = 0.5 %
= 14.4 V; THD = 10 %
= 14.4 V; THD = 0.5 %
= 14.4 V; THD = 10 %
= 14.4 V; V
= 15.2 V; V
= 14.4 V; V
= 4 
o
o
= 1 W to 12 W;
i
i
= 250 
= 1 kHz; R
= 10 kHz
= 1 V (RMS) and
P
< 10 V unless otherwise specified.
i
i
i
= 2 V RMS
= 2 V RMS
= 2 V RMS
DIAG
L
= 1 mA
= 4 
[4]
Min
-
1.0
-
-
-
150
125
-
-
500
275
-
-
18
23
29
40
37
41
58
-
-
-
-
65
55
TDF8555J
Typ
-
1.3
10
5
2
160
135
175
20
-
-
-
-
20
25
32
44
40
45
64
0.01
0.2
0.02
0.01
80
65
amb
© NXP B.V. 2011. All rights reserved.
= 25
Max
0.3
2.0
-
-
-
170
145
-
-
-
-
250
110
-
-
-
-
-
-
-
0.1
0.4
0.05
0.1
-
-

C;
37 of 57
Unit
V
V
%
%
%
C
C
C
dB
mA
mA
mA
mA
W
W
W
W
W
W
W
%
%
%
%
dB
dB