TFA9810T NXP Semiconductors, TFA9810T Datasheet - Page 5

• Manufacturer Part Number: TFA9810T
• Description: Audio Amplifiers 2X15W BTL POWER COMPARATOR
• Manufacturer: NXP Semiconductors

Specifications of TFA9810T

• Product: Class-D
• Output Power: 15 W
• Available Set Gain: 19.7 dB
• Thd Plus Noise: 0.04 %
• Operating Supply Voltage: 12 V
• Maximum Power Dissipation: 2500 mW
• Maximum Operating Temperature: + 85 C
• Mounting Style: SMD/SMT
• Audio Load Resistance: 8 Ohms
• Input Bias Current (max): 1 uA
• Input Signal Type: Differential
• Minimum Operating Temperature: - 40 C
• Output Signal Type: Differential
• Supply Type: Single
• Supply Voltage (max): 20 V
• Supply Voltage (min): 8 V
• Output Type: 2-Channel Stereo
• Package / Case: SOIC-32
• Operational Class: Class-D
• Audio Amplifier Output Configuration: 2-Channel Stereo
• Output Power (typ): 15x2@8OhmW
• Audio Amplifier Function: Speaker
• Total Harmonic Distortion: 0.04@8Ohm@1W%
• Single Supply Voltage (typ): 12V
• Dual Supply Voltage (typ): Not RequiredV
• Power Supply Requirement: Single
• Power Dissipation: 2.5W
• Rail/rail I/o Type: No
• Single Supply Voltage (min): 8V
• Single Supply Voltage (max): 20V
• 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: 32
• Package Type: SO
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: TFA9810T/N1,112

NXP Semiconductors
8. Functional description
TFA9810_3
Product data sheet
8.1 General
8.2 Interfacing
Table 3.
The TFA9810 is a dual-switching power comparator. It is the main building block for a
stereo high-efficiency Class D audio power amplifier system. It contains two full-bridge
BTL power stages, drive logic, protection-control logic and full differential input
comparators and references (see
closed-loop self-oscillating digital amplifier system or open-loop system can be built. A
second-order low-pass filter converts the Pulse Width Modulation (PWM) output signal
into an analog audio signal across the speaker.
The pins ENABLE and SO/OL control the operating mode of the TFA9810. Both the
ENABLE and the SO/OL pins refer to V
When the SO/OL pin is connected to V
the SO/OL pin is floating the TFA9810 is in open-loop mode.
The TEST pin needs to be connected to V
Table 4.
The device has two modes: SLEEP and OPERATING.
Symbol
IN2N
IN2P
STAB2
V
BOOT2N
OUT2N
BOOT2P
OUT2P
V
V
OUT1P
BOOT1P
OUT1N
BOOT1N
V
STAB1
Interfacing
SO/OL connected to
V
Open
SSP2
DDP2
DDP1
SSP1
SSD(HW)
Pin description
SO/OL connections
Pin
14
15
18
19
20
21
22
23
24
25
26
27
28
29
30
31
Rev. 03 — 20 February 2008
…continued
Description
Negative input comparator channel 2
Positive input comparator channel 2
Decoupling of internal 11 V regulator for channel 2 drivers
Negative power-supply voltage channel 2
Bootstrap high-side driver negative output channel 2
Negative output channel 2
Bootstrap high-side driver positive output channel 2
Positive output channel 2
Positive supply voltage power channel 2
Positive power supply voltage channel 1
Positive output channel 1
Bootstrap high-side driver positive output channel 1
Negative output channel 1
Bootstrap high-side driver negative output channel 1
Negative supply voltage power channel 1
Decoupling of internal 11 V regulator for channel 1 drivers
Figure
SSA
SSD(HW)
1). By using this power comparator a compact
DDA
the TFA9810 is in self-oscillating mode: when
Configuration
Self-oscillating
Open-loop
in both situations.
.
Audio amplifier 2 x 12 W
© NXP B.V. 2008. All rights reserved.
TFA9810
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