TDA8594 Datasheet, PDF (30/48 Pages) NXP Semiconductors – I2C-bus controlled 4 X 50 W power amplifier

NXP Semiconductors
TDA8594
I²C-bus controlled 4 × 50 W power amplifier
Table 17. Characteristics …continued
Refer to Figure 29 at V_P = V_P1 = V_P2 = 14.4 V; R_L = 4 Ω; f = 1 kHz; R_S = 0 Ω; normal mode; unless otherwise specified.
Tested at T_amb = 25 °C; guaranteed for T_amb = −40 °C to +105 °C.
Symbol
Parameter
Conditions
Min Typ Max Unit
f_SCL
R_ADSEL
SCL clock frequency
resistance on pin ADSEL
I²C-bus address
A[6:0] = 110 1100
-
400 -
kHz
155 -
-
kΩ
I²C-bus address
A[6:0] = 110 1101
42
51
57
kΩ
I²C-bus address
A[6:0] = 110 1111
7
10
15
kΩ
legacy mode
-
-
0.5 kΩ
Diagnostic
V_OL(DIAG)
LOW-level output voltage on fault condition; I_DIAG = 1 mA
pin DIAG
-
-
0.3 V
V_{O(offset_det)}
output voltage at offset
detection
±1.5 ±1.75 ±2.2 V
THD_clip
total harmonic distortion clip IB2[D7:D6] = 10
detection level
IB2[D7:D6] = 01
5
10
18
%
3
5
9
%
IB2[D7:D6] = 00
1
2
3
%
∆THD_clip
total harmonic distortion clip no overlap between IB2[D7:D6] =
1
4
9
%
detection level variation
10 and IB2[D7:D6] = 01
no overlap between IB2[D7:D6] =
1
3.5 6
%
01 and IB2[D7:D6] = 00
T_j(AV)(pwarn)
pre-warning average junction IB3[D4] = 0
temperature
IB3[D4] = 1
135 145 155 °C
112 122 132 °C
T_{j(AV)(G(−0.5dB))} average junction temperature V_i = 0.05 V
for 0.5 dB gain reduction
150 155 160 °C
∆T_{j(pw-G(−0.5dB))}
prewarning to 0.5 dB gain
reduction junction
temperature difference
7
10
13
°C
∆T_{j(G(−0.5dB)-of)}
junction temperature
difference between 0.5 dB
gain reduction and off
from thermal foldback to when all
outputs are switched off
10
15
20
°C
∆G_{(th_fold)}
gain reduction of thermal
foldback
all channels switched off
-
20
-
dB
Z_th(load)
load detection threshold
impedance
I²C-bus mode
normal load detection
-
-
20
Ω
line driver load detection
100 -
800 Ω
Z_th(open)
open load detection threshold I²C-bus mode
impedance
5000 -
-
Ω
I_{th(o)det(load)AC}
AC load detection output
threshold current
I²C-bus mode
AC load bit is set
460 -
-
mA
AC load bit is not set
-
-
230 mA
TDA8594_2
Product data sheet
Rev. 02 — 11 December 2007
© NXP B.V. 2007. All rights reserved.
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