TDA1566TH/N1C,118 NXP Semiconductors, TDA1566TH/N1C,118 Datasheet - Page 11

• Manufacturer Part Number: TDA1566TH/N1C,118
• Description: IC AMP AUDIO PWR 150W AB 24HSOP
• Manufacturer: NXP Semiconductors
• Type: Class ABr

Specifications of TDA1566TH/N1C,118

• Output Type: 1-Channel (Mono) or 2-Channel (Stereo)
• Package / Case: 24-HSOP
• Max Output Power X Channels @ Load: 150W x 1 @ 1 Ohm; 75W x 2 @ 2 Ohm
• Voltage - Supply: 6.5 V ~ 18 V
• Features: Depop, I²C, Mute, Short-Circuit and Thermal Protection, Standby
• Mounting Type: Surface Mount
• Product: Class-AB
• Output Power: 92 W
• Available Set Gain: 26 dB
• Common Mode Rejection Ratio (min): 60 dB
• Thd Plus Noise: 0.2 %
• Operating Supply Voltage: 14.4 V
• Maximum Power Dissipation: 80000 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 4 Ohms
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential
• Supply Type: Single
• Supply Voltage (max): 18 V
• Operational Class: Class-AB
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Audio Amplifier Function: Speaker
• Single Supply Voltage (typ): 14.4V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 80W
• Rail/rail I/o Type: No
• Single Supply Voltage (max): 18V
• Dual Supply Voltage (min): Not RequiredV
• Dual Supply Voltage (max): Not RequiredV
• Operating Temp Range: -40C to 85C
• Operating Temperature Classification: Industrial
• Mounting: Surface Mount
• Pin Count: 24
• Package Type: HSOP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Lead free / RoHS Compliant
• Other names: 935284624118; TDA1566TH/N1C-T; TDA1566TH/N1C-T

NXP Semiconductors
TDA1566_2
Product data sheet
6.2.2 AC load detection
R
load will be interpreted as an amplifier load.
The result of the DC load detection is stored in DB1[D4] and DB1[D5] for channel 1 and in
DB2[D4] and DB2[D5] for channel 2, see
Table 12.
Note that the DC load bits are only valid if DB3[D3] = 1. The DC load detection valid bit is
reset, DB3[D3] = 0, when the DC load detection is started with a not completely
discharged SVR capacitor (V
an engine start (V
The AC load detection is used to detect if AC coupled speakers like tweeters are
connected correctly during assembly. The detection starts when IB1[D2] changes from
LOW to HIGH. A sine wave of a certain frequency (e.g. 19 kHz) needs to be applied to the
inputs of the amplifier. The output voltage over the load impedance will cause an output
current in the amplifier. Output currents larger than 1.15
detection bit and no AC load is detected when the output current is less than 0.85
see
connected between the PROG pin and GND. The relation between R
by:
To set the AC load detection bit the peak output current must pass the 1.15
three times. The three ‘threshold cross’ counter is used to prevent false AC load detection
caused by switching the input signal on or off. To reset the slope counter, IB1[D2] needs to
be reset. With R
The levels presented refer to the advised value of 1500 .
Open load bits
DB1[D4] and DB2[D4]
0
0
1
Don’t care
Fig 8. AC load detection limits
trip1
R
R
I
ref
trip1
trip2
Figure
= 390 / R
and R
= 0.1
= 1.05
Interpretation of DC load detection bits
8. The reference current I
trip2
PROG
(R
levels presented refer to the advised value of 1500 . Note that a shorted
PROG
(R
PROG
P
PROG
< 7.5 V typical, see
[A] (valid for R
= 1500
Rev. 02 — 20 August 2007
Amplifier load bits
DB1[D5] and DB2[D5]
0
1
don’t care
don’t care
720)
450)
no AC load detected
SVR
I
2
C-bus controlled dual channel/single channel amplifier
the current thresholds are set to 200 mA and 320 mA.
> 0.3 V) or when the DC load detection is interrupted by
PROG
ref
200 mA
(peak)
0.78
is set with an external resistor R
Section
between 1.2 k and 4 k ).
Table
I
ref
DC load valid bit
DB3[D3]
1
1
1
0
12.
9).
1.22
320 mA
(peak)
AC load detected
I
ref
001aad011
I
ref
will set the AC load
Description
amplifier load
line driver load
open load
invalid DC load
detection result
PROG
TDA1566
© NXP B.V. 2007. All rights reserved.
PROG
and I
I
(1 %)
ref
ref
threshold
is given
11 of 46
I
ref
,