TFA9879HN/N1,157 NXP Semiconductors, TFA9879HN/N1,157 Datasheet - Page 20

• 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
Fig 13. DRC attack and release behavior
release level (RMS-value)
audio out
attack level (peak value)
attack level (peak value)
audio in
Table 11.
[1]
[2]
[3]
[4]
Control value:
attack level
0000
1010
1011
1100
1101
1110
1111
0001
0010
0011
0100
0101
0110
0111
1000
1001
The control value is selected via bits AT_LVL in the DRC control register (see
The control value is selected via bits RL_LVL in the DRC control register (see
0 dB (RMS) release level equals 0 dB (peak) attack level.
Default value.
[4]
DRC attack and release levels
[1]
All information provided in this document is subject to legal disclaimers.
Attack level based on
peak value; absolute
value (dBFS)
−12
−10
−8
−6
−5
−4
−3
−2
−1
0
1
2
4
6
8
10
Rev. 02 — 15 October 2010
attack rate (dB/ms)
Mono BTL class-D audio amplifier with digital input
Control value:
release level
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
[4]
RMS value
release rate (dB/ms)
[2]
Release level based on RMS
value (relative to the attack
level
−29
−26
−23
−20
−18
−16
−14
−12
−10
−8
−6
−4
−3
−2
−1
0
[3]
Table
Table
010aaa654
) (dB)
TFA9879
© NXP B.V. 2010. All rights reserved.
28).
28).
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