YDA139
D- 4
STEREO 2.5W DIGITAL AUDIO POWER AMPLIFIER
鈻燨verview
YDA139 (D-4) is a digital audio power amplifier IC with maximum output of 2.5W (R
L
=4惟)脳2ch.
YDA139 has a 鈥淧ure Pulse Direct Speaker Drive Circuit鈥?which directly drives speakers while reducing distortion of
pulse output signal and reducing noise on the signal, and realizes the highest standard low distortion rate characteristics
and low noise characteristics as the same class of output digital amplifier IC.
In addition, circuit design with fewer external parts can be made depend on the condition of use because corresponds to
filter less.
YDA139 has the power-down function which can minimize the power consumption in the standby state.
In addition, high speed recovery function provided realizes recovery time within 1ms from the power-down state.
Moreover, Over-current Protection function for speaker output terminals, IC Thermal Protection function, and POP
Noise Reduction function are provided.
YDA139 supports both digital signal input and analog signal input.
鈻燜eatures
銉籑aximum
output
WLCSP25
2.5 W脳2ch (V
DDP
=V
DDA
=5.0V, R
L
=4鈩? THD+N=10%)
1.5 W脳2ch (V
DDP
=V
DDA
=5.0V, R
L
=8鈩? THD+N=10%)
SSOP24
2.5 W脳2ch
錛圴
DDP
=V
DDA
=5.0V, R
L
=4鈩? THD+N=10%錛?/div>
1.3 W脳2ch
錛圴
DDP
=V
DDA
=5.0V, R
L
=8鈩? THD+N=10%錛?/div>
銉籈fficiency
WLCSP25
91 % (Analog input mode, V
DDP
=V
DDA
=5.0V, R
L
=8鈩? Po=1.5W)
SSOP24
88 % (Analog input mode, V
DDP
=V
DDA
=5.0V, R
L
=8鈩? Po=1.5W)
銉籇istortion
Rate (THD+N)
0.03 % (Analog input mode, V
DDP
=V
DDA
=5.0V, R
L
=8鈩? Po=0.65W)
銉籗/N
Ratio
99dB (Analog input mode, V
DDP
=V
DDA
=5.0V, Gain[1:0]=L,L)
銉籓ver-current
Protection function
銉籘hermal
Protection function
銉籐ow
voltage Malfunction Prevention function
銉籔ower-down
function by PDN terminal
銉籔ower-down
High speed Recovery function
銉籔ackage
Lead-free 25-ball WLCSP (YDA139-WZ)
Lead-free 24-pin SSOP (YDA139-EZ)
YDA139 CATALOG
CATALOG No.:LSI-4DA139A30
2006.2
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