|
YAMAHA CORPORATION |
YDA168B
D-4H3B
MONO 3.3W Non-Clip DIGITAL AUDIO POWER AMPLIFIER
General Description
YDA168B (D-4H3B) is an integrated circuit with Max.3.3W (RL=4Ω)×1ch Class-D speaker
amplifier. This speaker amplifier uses the filter-less method allowing a speaker to be directly
connected to the output and features low-level distortion and noise characteristics.
The speaker amplifier, having Yamaha original Power Limit Interlock Non-Clip function, controls
Gain automatically and prevents output signals from being clipped at the supply voltage. In
addition, this power limit function permits the maximum output to be arbitrarily specified to 100mW
to 1000mW according to a speaker to use.
Furthermore, this amplifier has the following functions: overcurrent and overtemperature
protection functions, DC output protection function, under-voltage malfunction prevention function,
as well as EMI noise and the pop noise reduction functions and High PSRR function.
2.5V~5.25V
YDA168B (D-4H3B)
3.3W at 5V
MONO
Differential
CTRL
PL
+8dB
PWM
Output Buffer
+10dB
Non-Clip + Power Limit
Power-Down Control
Circuit Protection
4Ω~
YDA168B Simplified Diagram
YDA168B CATALOG
CATALOG No.: LSI-4DA168B20
2010.9
Features
・Supply Voltage
・Input
・Output
VDD 2.5V to 5.25V
Mono (Differential)×1
Speaker ( Class-D, BTL)
YDA168B
・Maximum Output
3.3 W×1ch
0.93 W×1ch
1.00 W×1ch
0.75 W×1ch
・Maximum Output 2.4 W×1ch
(Non-Clip)
0.70W×1ch
・Distortion (THD+N) 0.045 %
(VDD = 5.0 V, RL = 4 Ω, THD+N = 10 %, TA = 25 °C)
(VDD = 3.6 V, RL = 8 Ω, THD+N = 10 %, TA = 25 °C)
(VDD = 4.2 V, RL = 8 Ω, THD+N = 1 %, TA = 25 °C)
(VDD = 3.6 V, RL = 8 Ω, THD+N = 1 %, TA = 25 °C)
(VDD = 5.0 V, RL = 4 Ω, THD+N = 1 %, TA = 25 °C)
(VDD = 3.6 V, RL = 8 Ω, THD+N = 1 %, TA = 25 °C)
(VDD = 3.6 V, RL = 8 Ω, PO = 0.40 W, 1kHz)
・Residual Noise
・S/N Ratio
50 μVrms
97.2 dB
(VDD = 3.6 V, RL = 8 Ω)
(VDD = 5.0 V, RL = 4 Ω)
・PSRR
75 dB
(VDD = 3.6 V, RL = 8 Ω, f = 217 Hz)
・Efficiency
90 %
(VDD = 3.6 V, RL = 8 Ω, PO = 0.8 W)
・NCPL (Power Limit interlock Non-Clip function)
・Protection Function
Overcurrent Protection Function (OCP)
Overtemperature Protection Function (OTP)
DC Output Protection Function (DCOP)
Under-voltage Malfunction Prevention Function (UVL)
・Power-down Function
・High Speed Startup
・Pop Noise Reduction
・EMI Noise Reduction
・Lead-free Package
9-ball WLCSP (YDA168B-PZ)
2 LSI-4DA168B20
|