中文
EnglishThe APA2176/2176A,APA2177,APA2178 is a stereo, fixed gain, and cap-free headphone driver which is available in TQFN4x4 20-pin, TQFN3x3 16-pin (APA2176A) or TSSOP-16 package. Dual supply voltage pro
Features
No Output Capacitor Required
Dual Supply Voltage (PVDD>VDD)
– VDD=1.8 ~5.5V
– PVDD=2.2 ~ 5.5V
Meeting VISTA Requirements
Output Power
at 1% THD+N
-200mW, at VDD=3.3V, PVDD=5.0V, RL=16Ω
-55mW, at VDD=1.8V, PVDD=3.0V, RL=16Ω
at 10% THD+N
-270mW, at VDD=3.3V, PVDD=5.0V, RL=16Ω
-70mW, at VDD=1.8V, PVDD=3.0V, RL=16Ω
Less External Components Required
High PSRR: 80dB at 217Hz
Fast Start-Up Time : 120µs
Short-Circuit and Thermal Protection
Surface-Mount Package
– TQFN4x4-20B (with Enhanced Thermal Pad)
– TSSOP-16
– TQFN3x3-16 (with Enhanced Thermal Pad)
General Description
The APA2176/2176A,APA2177,APA2178 is a stereo, fixed gain, and cap-free
headphone driver which is available in TQFN4x4 20-pin,
TQFN3x3 16-pin (APA2176A) or TSSOP-16 package. Dual
supply voltage provides higher efficiency and better power
ripple rejection.
The APA2176/2176A is designed with ground-reference
output and no need the output capacitors for DC blocking.
The advantages of eliminating the output capacitor are
saving the cost, PCB’s space, and component height.
The built-in gain setting can minimize the external com-
ponent counts and save the PCB space. High PSRR pro-
vides increased immunity to noise and RF rectification. In
addition to these features, a fast start-up time and small
package size make the APA2176/2176A an ideal choice
for portable multimedia devices.
Moreover, the APA2176/2176A is also equipped other
features. For example, at THD+N=1%, it is capable of
driving 200mW at V DD=3.3V, PV DD=5.0V into 16Ω. In
addition, it provides thermal and short circuit protections.
Simplified Application Circuit
相关产品
Part_No | Package & Pins | VDD Voltage (V) | IDD Supply Current (mA) | TSTART -UP (uS) | Output Power RL=32W (mW) | Output Power RL=2.5 KW (mW) | Total Harmonic Distortn Plus Noise (%) | Power Supply Rejection Ratio (dB) | Output Noise (uV) | Signal To Noise Ratio (dB) | Output Offset Voltage (mV) | |
min | max | |||||||||||
APA2171 | TSSOP-14 | 3 | 3.6 | 10 | 500 | 20 | 2.1 | 0.001 | 80 | 8 | 108 | 5 |
APA2172 | TSSOP-14 | 2.3 | 5.5 | 10 | 500 | 40 | 2.1 | 0.001 | 80 | 8 | 108 | 5 |
APA2174 | TQFN4x4-20A | 2.3 | 4.5 | 5 | 500 | NA | 2.1 | 0.002 | 90 | 10 | 105 | 8 |
APA2175 | TQFN4x4-20B | 2.3 | 4.5 | 5 | 16000 | NA | 2.1 | 0.003 | 80 | 15 | 102 | 8 |
"APA2176 | TQFN4x4-20B | 1.8 | 5.5 | 2 | 120 | 150 | NA | 0.03 | 82 | 15 | 95 | 5 |
APA2177 | WLCSP-16 | 2.4 | 5.5 | 2.5 | 4000 | 22 | NA | 0.02 | 90 | 7 | 95 | 0.5 |
APA2178 | WLCSP2x2-16 | 1.8 | 4.5 | 5 | 120 | 145 | NA | 0.02 | 75 | 15 | 100 | 5 |
APA2180 | WLCSP1.6x1.6-12 | 2.3 | 5.5 | 1 | 4000 | 60 | NA | 0.03 | 80 | 27 | 95 | 8 |
APA2181 | WLCSP1.6x1.6-12 | 2.3 | 5.5 | 1 | 4000 | 60 | NA | 0.03 | 80 | 27 | 95 | 8 |
APA2173 | MSOP-10P | 2.3 | 5.5 | 10 | 500 | 60 | 2.1 | 0.001 | 80 | 8 | 108 | 5 |
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