Features: ・Maximum output
2.1 W×2ch (VDDP=VDDA=5.0V, RL=4Ω, THD+N=10%)
0.75 W×2ch (VDDP=VDDA=3.6V, RL=8Ω, THD+N=10%)
・Distortion Rate (THD+N)
0.03 % (VDDP=VDDA=3.6V, RL=8Ω, Po=0.4W, 1kHz)
・Residual Noise
40µVrms (VDDP=VDDA=3.6V, Av=12dB)
・Efficiency
84 % (VDDP=VDDA=3.6V, RL=8Ω, Po=600mW)
78 % (VDDP=VDDA=3.6V, RL=8Ω, Po=100mW)
・S/N Ratio
95dB (VDDP=VDDA=3.6V, Av=12dB)
・Channel separation
95dB (VDDP=VDDA=3.6V, RL=8Ω, Av=18dB, 1kHz)
・Over-current Protection function
・Thermal Protection function
・Low voltage Malfunction Prevention function
・2ch independent power-down control function
・Power-down High speed Recovery function
・Package
Lead-free 16-ball WLCSP (YDA144-WZ)
Lead-free 20-pin QFN (YDA144-QZ)The above info is from (www.seekic.com)
Pinout
Specifications
| Item |
Symbol |
Min. |
Max. |
Unit |
Power supply terminal (PVDD) Voltage Range
Power supply terminal (AVDD) Voltage Range
Input terminal Voltage Range
(Analog input terminals: INL+,INL-,INR+,INR-)
Input terminal Voltage Range
(Input terminals except the above-mentioned) |
VDDP
VDDP
VIN
VIN |
-0.3
-0.3
VSS-0.6
VSS-0.3 |
6.0
6.0
VDDA+0.6
VDDA+0.3 |
V
V
V
V |
Allowable dissipation (16WLCSP,Ta=25)
Allowable dissipation (16WLCSP,Ta=85)
Allowable dissipation (20QFN,Ta=25)
Allowable dissipation (20QFN,Ta=85)
Allowable dissipation (20QFN,Ta=25)
Allowable dissipation (20QFN,Ta=85)
Junction Temperature
Storage Temperature |
PD25
PD85
PD25
PD85
PD25
PD85
TJMAX
TSTG |
-50
|
2.0
0.80
1.56
0.62
3.63
1.45
125
125 |
W
W
W
W
W
W
|
Note) Absolute Maximum Ratings is values which must not be exceeded to guarantee device reliability and life, and when using a device in excess even a moment, it may immediately cause damage to device or may significantly deteriorate its reliability With a system of which a voltage at an input pin might exceed a supply voltage of VDDA/GND, use an external diode to assure that the voltage does not exceed the absolute maximum rating.
*1: ja=50.0/W, conditions: YDA144 evaluation board (4 layers), dead calm
*2: ja=64.0/W, conditions: YDA144 evaluation board (2 layers, without through-hole), dead calm
*3: ja=27.5/W, conditions: 4 layers, through-hole, copper foil 65µm, dead calm
Edited by (www.seekic.com) ,the biggest IC PDF and datasheet download site.
DescriptionYDA144 (D-4N) is a digital audio power amplifier IC with maximum output of 2.1W (RL=4Ω)*2ch.
YDA144 has a "Pure Pulse Direct Speaker Drive Circuit" 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 among digital amplifier ICs for mobile use. In addition, circuit design with fewer external parts can be made depend on the condition of use because corresponds to filter less.
The YDA144 features Yamaha original non-clip output control function which detects output signal clip due to the over level input signal and suppress the output signal clip automatically. Also the non-clip output control function can adapt the output clip caused by power supply voltage down with battery. This is the difference from the traditional AGC (Auto Gain Control) or ALC (Auto Level Control) circuit. Attack time and release time can be freely set by external resistances or capacitances.The independent power-down function for L channel and R channel minimizes consumption current at standby. As for protection function, overcurrent protection function for speaker output terminal, overtemperatue protection function for inside of the device, and low supply voltage malfunction preventing function are prepared.The above info is from (www.seekic.com)
YDA144 Data Sheet
