TDF8590TH/N1-T NXP Semiconductors, TDF8590TH/N1-T Datasheet - Page 4

• Manufacturer Part Number: TDF8590TH/N1-T
• Description: Audio Amplifiers AMPLIFIER CLASS D
• Manufacturer: NXP Semiconductors

Specifications of TDF8590TH/N1-T

• Product: Class-D
• Output Power: 160 W
• Available Set Gain: 32 dB
• Common Mode Rejection Ratio (min): 75 dB
• Thd Plus Noise: 0.15 %
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 8 Ohms
• Dual Supply Voltage: +/- 27 V
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential, Single
• Supply Type: Dual
• Output Type: 1-Channel Mono or 2-Channel Stereo
• Package / Case: HSOP-26
• Operational Class: Class-D
• Audio Amplifier Output Configuration: 1-Channel Mono/2-Channel Stereo
• Output Power (typ): 160x1@8Ohm/80x2@4OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.15@8Ohm@1W%
• Single Supply Voltage (typ): Not RequiredV
• Dual Supply Voltage (typ): ±27V
• Power Supply Requirement: Dual
• Rail/rail I/o Type: No
• Single Supply Voltage (min): Not RequiredV
• Single Supply Voltage (max): Not RequiredV
• Dual Supply Voltage (min): ±14V
• Dual Supply Voltage (max): ±29V
• 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
• Other names: TDF8590TH/N1,118

NXP Semiconductors
TDF8590TH_2
Product data sheet
6.2 Mode selection
The TDF8590TH contains two independent amplifier channels with a differential input
stage, high output power, high efficiency (90 %), low distortion and a low quiescent
current. The amplifier channels can be connected in the following configurations:
The TDF8590TH also contains circuits common to both channels such as the oscillator, all
reference sources, the mode functionality and a digital timing manager. For protection a
thermal foldback, temperature, current and voltage protection are built in.
The TDF8590TH can be switched in three operating modes via pin MODE:
The input stage (see
output. To avoid pop noise the DC output offset voltage should be increased gradually at a
mode transition from mute to operating, or vice versa, by limiting the dV
MODE, resulting in a small dV
constant for a gradually increase of the DC output offset voltage between mute and
operating is generated via an RC network on pin MODE. An example of a switching circuit
for driving pin MODE is illustrated in
Table 3.
S1
closed
closed
open
open
Fig 3. Example of mode selection circuit
•
•
•
•
•
Mono Bridge-Tied Load (BTL) amplifier
Dual Single-Ended (SE) amplifiers
Standby mode; the amplifiers are switched off to achieve a very low supply current
Mute mode; the amplifiers are switching idle (50 % duty cycle), but the audio signal at
the output is suppressed by disabling the VI-converter input stages
Operating mode; the amplifiers are fully operational with output signal
Mode selection
Figure
Rev. 02 — 23 April 2007
2
1) contributes to the DC offset measured at the amplifier
V
O(offset)
DDP
S2
closed
open
closed
open
80 W SE (4 ) or 1
5.6 k
5.6 V
/dt for the DC output offset voltage. The required time
Figure 3
S1
5.6 k
and explained in
5.6 k
S2
160 W BTL (8 ) class-D amplifier
001aad836
100 F
(10 V)
MODE
SGND
Mode selection
Standby mode
Standby mode
Mute mode
Operating mode
Table
TDF8590TH
3.
© NXP B.V. 2007. All rights reserved.
MODE
/dt on pin
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