Ordering number: ENA1963
LV4904V
Monolithic IC
Digital Input Class-D Power Amplifier
Overview
http://onsemi.com
The LV4904V is a 2-channel class-D amplifier IC that supports digital input. With this single chip and with a minimal
number of external components, it is possible to effectively implement class-D amplifiers. The LV4904V incorporates
a soft mute function and a gain controller without pop noise, and can be used as a master volume control of the set. Its
function settings can be established through an I
2
C bus interface, but it is also possible to establish these settings simply
by pin settings without using the I
2
C bus. The LV4904V is ideally suited as the power amplifiers in mini components,
flat-panel TVs, game machines, electronic musical instruments and other such products.
Features
•
I
2
S input, 2-channel class-D power amplifier
•
On-chip variable over-sampler
•
Gain controller (+12dB to -81dB, in 1.5 dB increments)
•
Soft mute function
•
Controllable via I
2
C bus or pin settings
•
Under voltage protection circuit, overcurrent protection circuit, thermal protection circuit integrated
Functions
•
Input PCM (Fs): 32 kHz/44.1 kHz/48 kHz/88.1 kHz/96 kHz/176.2 kHz/192 kHz
•
Master clock input: 256 fs/384 fs/512 fs/768 fs (when Fs=32/44.1/48 kHz)
•
Input format: I
2
S/24 bits left justified MSB-first / 24 bits right justified LSB-first / 16/18/20/24 bits right justified
MSB-first
•
Output (THD + N=10%) : 10W × 2 channels (PVD = 15V, RL = 8Ω), 15W × 2 channels (PVD = 18V, RL = 8Ω)
•
Efficiency
: 85% (PVD = 15V, RL = 8Ω, fin = 1 kHz, Po = 10W)
•
THD + N
: 0.1% or less (PVD = 15V, RL = 8Ω, fin = 1 kHz, Po = 1W, filter: AES17)
•
Power supply voltages
: PVD = 8 to 20V, VDD = 3.3V
Semiconductor Components Industries, LLC, 2013
May, 2013
92811 SY 20110606-S00002 No.A1963-1/30
LV4904V
Specifications
Absolute Maximum Ratings
at Ta
=
25°C
Parameter
Power cell power supply
Logic power supply
Maximum junction temperature
Operating temperature
Storage temperature
Symbol
PVD
VDD
Tj max
Topr
Tstg
Conditions
Externally applied power supply
Externally applied power supply
Ratings
-0.3 to 24
-0.3 to 4.0
125
-30 to +70
-50 to +150
Unit
V
V
°C
°C
°C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the Recommended Operating
Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect device reliability.
Recommended Operating Range
at Ta
=
25°C
Ratings
Parameter
Power cell power supply
Logic power supply
Load
Symbol
PVD
VDD
RL
Conditions
min
Externally applied power supply
Externally applied power supply
Speaker load
8
3.0
8
typ
13
3.3
-
max
20
3.6
-
V
V
Ω
Unit
Electrical Characteristics
Ratings
Parameter
Digital/Ta=25°C, VDD=3.3V, PVD=13V
Standby current
Operating current
H input voltage
L input voltage
H input current
L input current
Output pin current
IPD
IOP
VIHHIS
VILHIS
I IH
II L
IOH
IOL
VIN=VDD
VIN=GND
VOUT=VDD-0.4V
VOUT=0.4V
-
-
0.8VDD
-0.3
-
-10
-0.8
1
1
12
-
-
-
-
-
-
10
30
5.5
0.2VDD
10
-
-
-
μA
mA
V
V
μA
μA
mA
mA
Symbol
Conditions
min
typ
max
Unit
Power/Ta=25°C, VDD=3.3V, PVD=13V, RL=8Ω, L=22μH(TOKO:A7040HN-220M), C=33μF, Fin=1kHz
Standby current
Mute on current
Quiescent current
Power Tr. ON resistance *1
Output power
IST
IMUTE
ICCO
RDSON
Pout1
Pout2
Output noise
THD+N
Channel separation
VN
THD
CHSEP
PVD, RSTB=Low
PVD, ENABLE=Low
PVD, 50% duty
ID=1A
8Ω, 15V, THD+N=10%, Modulation index
87.5%
8Ω, 18V, THD+N=10%, Modulation index
87.5%
IHF-A
PO=1W, 1kHz, 8Ω
PO=1W, 1kHz, 8Ω
-
-
40
4
0.1
60
10
0.3
-
mV
%
dB
12
14
-
W
-
-
-
-
9
1
1
16
300
10
10
10
60
-
-
μA
mA
mA
mΩ
W
*1 : The maximum power transistor ON resistance(RDSON) is 360mΩ(design guarantee value).
Note : The value of these characteristics were measured in Our test environment. The actual value in an end system will vary depending on the printed circuit
board pattern, the components used, and other factors.
No.A1963-2/25
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