TFA9879HN/N1,157 NXP Semiconductors, TFA9879HN/N1,157 Datasheet - Page 33

• 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
10.4.8 Volume control
10.4.9 De-emphasis, soft/hard mute and power limiter
Table 31.
Table 32.
Bit
15:13 reserved
12
11:8
7:0
Bit
15:12 reserved
11:10 DE_PHAS
9
8
7:0
reserved
VOL
H_MUTE
S_MUTE
P_LIM
Symbol
ZR_CRSS
Symbol
Volume control register (address 13h) bit description
De-emphasis, soft/hard mute and power limiter control register (address 14h) bit
description
All information provided in this document is subject to legal disclaimers.
Access
R/W
R/W
R/W
Access Default
R/W
R/W
R/W
R/W
Rev. 02 — 15 October 2010
0000
00
0
0
0xBD
1
0xBD
Default
000
0000
Mono BTL class-D audio amplifier with digital input
Description
de-emphasis settings,
configuration for four sample rates as a function of the
value of DE_PHASE
hard mute:
soft mute; default value:
power limiter control settings; see
suppressions factors as a function of the value of P_LIM
Description
volume update at zero crossing audio stream:
volume control; see
suppression factors as a function of the value of bits
VOL
0: no hard mute; default value
1: hard mute enabled; implemented by PWM signal
with 50% duty-cycle
0: soft mute disabled using raised cosine
1: soft mute enabled using raised cosine
0: zero-crossing volume control disabled
1: zero-crossing volume control enabled; default
value
Table 10
seeTable 6
for the amplification and
for the de-emphasis
Table 13
TFA9879
© NXP B.V. 2010. All rights reserved.
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