TDA1566TH View Datasheet(PDF) - NXP Semiconductors.
Part Name
Description
Manufacturer
TDA1566TH
NXP Semiconductors.
TDA1566TH Datasheet PDF : 46 Pages
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NXP Semiconductors
TDA1566
I2C-bus controlled dual channel/single channel ampliļ¬er
I2C-bus mode
off
0 V 1.0 V
operation mode defined by IB1[D0] and IB2[D0]
2.6 V
VP
non-I2C-bus mode
off
0 V 1.0 V
mute
2.6 V
4.5 V
6.5 V
operating
VP
001aad 008
Fig 5. Enable pin mode switching in I2C-bus and non-I2C-bus mode
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 ampliļ¬er mode. Table 6 shows how
the gain is selected.
Table 6. Gain select in I2C-bus and non-I2C-bus mode
Gain select
16 dB
I2C-bus
IB3[D6] = 1
IB3[D5] = 1
Non-I2C-bus
PROG connected with 1.5 kā¦
to GND
26 dB
IB3[D6] = 0[1]
IB3[D5] = 0[2]
PROG open[3]
[1] Channel 1.
[2] Channel 2.
[3] Both channels.
6.1.2.1 I2C-bus mode
The gain is selected with IB3[D6] for channel 1 and IB3[D5] for channel 2. If the gain
select is performed when the ampliļ¬er is muted, the gain select will be pop free. See
Section 6.4.2 for the deļ¬nition of the instruction bytes.
If DC load detection is used, IB1[D1] = 1, auto gain select is activated. Detection of an
open load (see Section 6.2.1) will result in a line driver mode setting. If the load detection
data is invalid, IB3[D5] and IB3[D6] will deļ¬ne the gain setting.
6.1.2.2 Non-I2C-bus mode
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 ā¦ between the PROG
pin and GND selects 16 dB gain.
When the ampliļ¬er is used in line driver mode loads of 2 ā¦ and 4 ā¦ can be driven. With a
load larger than 25 ā¦ a Zobel network of 33 nF in series with 22 ā¦ should be connected
between the ampliļ¬er output terminals. The Zobel network should be placed close to the
output pins. To prevent instability in 1 ā¦ mode the ampliļ¬er must not be used in line driver
mode with a load larger than 25 ā¦.
TDA1566_2
Product data sheet
Rev. 02 ā 20 August 2007
Ā© NXP B.V. 2007. All rights reserved.
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