TDA1566 NXP Semiconductors, TDA1566 Datasheet - Page 8

• Manufacturer Part Number: TDA1566
• Description: The TDA1566 is a car audio power amplifier with a complementary output stage realizedin BCDMOS
• Manufacturer: NXP Semiconductors

NXP Semiconductors
TDA1566_2
Product data sheet
6.1.2.1 I
6.1.2.2 Non-I
6.1.2 Gain selection
The TDA1566 features a 16 dB and a 26 dB gain setting. The 16 dB setting is referred to
as line driver mode, the 26 dB setting is referred to as amplifier mode.
the gain is selected.
Table 6.
[1]
[2]
[3]
The gain is selected with IB3[D6] for channel 1 and IB3[D5] for channel 2. If the gain
select is performed when the amplifier is muted, the gain select will be pop free. See
Section 6.4.2
If DC load detection is used, IB1[D1] = 1, auto gain select is activated. Detection of an
open load (see
data is invalid, IB3[D5] and IB3[D6] will define the gain setting.
The gain for channel 1 and channel 2 is selected with the PROG pin. Leaving the pin
unconnected selects 26 dB gain and connecting a resistor of 1500
pin and GND selects 16 dB gain.
When the amplifier is used in line driver mode loads of 2
load larger than 25
between the amplifier output terminals. The Zobel network should be placed close to the
output pins. To prevent instability in 1
mode with a load larger than 25 .
Gain select
I
Non-I
2
2
Fig 5. Enable pin mode switching in I
C-bus mode
C-bus
Channel 1.
Channel 2.
Both channels.
2
2
C-bus
C-bus mode
Gain select in I
for the definition of the instruction bytes.
Section
0 V
0 V
off
off
a Zobel network of 33 nF in series with 22
Rev. 02 — 20 August 2007
1.0 V
1.0 V
6.2.1) will result in a line driver mode setting. If the load detection
2
C-bus and non-I
I
2
16 dB
IB3[D6] = 1
IB3[D5] = 1
PROG connected with 1.5 k
to GND
C-bus controlled dual channel/single channel amplifier
2.6 V
2.6 V
operation mode defined by IB1[D0] and IB2[D0]
mute
2
non-I
C-bus and non-I
4.5 V
mode the amplifier must not be used in line driver
I
2
C-bus mode
2
2
C-bus mode
C-bus mode
6.5 V
2
C-bus mode
operating
and 4
26 dB
IB3[D6] = 0
IB3[D5] = 0
PROG open
001aad008
should be connected
can be driven. With a
between the PROG
Table 6
TDA1566
V
V
[1]
[2]
© NXP B.V. 2007. All rights reserved.
[3]
P
P
shows how
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