TFA9879HN/N1,157 NXP Semiconductors, TFA9879HN/N1,157 Datasheet - Page 7

• Manufacturer Part Number: TFA9879HN/N1,157
• Description: IC AMP AUDIO DGTL MONO D 24HVQFN
• Manufacturer: NXP Semiconductors
• Type: Class Dr

Specifications of TFA9879HN/N1,157

• Output Type: 1-Channel (Mono)
• Package / Case: 24-VFQFN Exposed Pad
• Max Output Power X Channels @ Load: 2.75W x 1 @ 4 Ohm
• Voltage - Supply: 2.5 V ~ 5.5 V
• Features: Depop, Digital Inputs, I²C, I²S, Mute, Short-Circuit and Thermal Protection, Tone and Volume Control
• Mounting Type: Surface Mount
• Product: Class-D
• Output Power: 2.75 W
• Thd Plus Noise: 0.02 %
• Operating Supply Voltage: 3.7 V
• Supply Current: 5.7 mA
• Mounting Style: SMD/SMT
• Audio - Load Impedance: 4 Ohms, 8 Ohms
• Audio Load Resistance: 4 Ohms, 8 Ohms
• Input Signal Type: Serial
• Supply Voltage (max): 5.5 V
• Supply Voltage (min): 2.5 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

NXP Semiconductors
TFA9879
Product data sheet
9.1.1 Power-up/power-down
9.1 Operating modes
The following protection circuits are built into the TFA9879:
The TFA9879 supports the following operating modes, which are controlled via the
I
The TFA9879 device control settings are detailed in
The power-up and power-down timing of the TFA9879 is illustrated in
external power supply levels, V
ranges before the operating mode is selected. Bit POWERUP in the Device control
register
OPMODE. After the turn-on delay (t
un-mute function. A soft mute function is generated when OPMODE is set to 0. The
TFA9879 should be set to Power-down mode before the power supplies are disconnected
or turned off.
2
•
•
•
•
•
•
C-bus interface:
•
•
•
OverTemperature Protection (OTP)
OverCurrent Protection (OCP)
UnderFrequency Protection (UFP)
OverFrequency Protection (OFP)
Invalid Bit-clock Protection (IBP)
DC-blocking
Power-down mode, used to switch off the device; current consumption is reduced to
a minimum; the I
Off mode, in which the class-D amplifier is switched off; the TFA9879 is completely
biased and the PWM outputs are disabled.
Amplifier mode, in which the digital inputs are used to generate a signal between
OUTA and OUTB.
(Table
21) must be set to 1 before the operating mode can be selected via bits
All information provided in this document is subject to legal disclaimers.
2
C-bus remains operational; the PWM outputs are disabled.
Rev. 02 — 15 October 2010
DDP
Mono BTL class-D audio amplifier with digital input
and V
d(on)
), the device automatically generates a soft
DDD
, should be within the specified operating
Table
21.
Figure
TFA9879
© NXP B.V. 2010. All rights reserved.
3. The
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