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PDF APA2176 Data sheet ( Hoja de datos )
| Número de pieza | APA2176 | |
| Descripción | 270mW Stereo Cap-Free Headphone Driver | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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APA2176/2176A
270mW Stereo Cap-Free Headphone Driver
Features
• No Output Capacitor Required
• Dual Supply Voltage (PV >V )
DD DD
– VDD=1.8 ~4.5V
– PV =2.2 ~ 5.5V
DD
• Meeting VISTA Requirements
• Output Power
at 1% THD+N
-200mW,
at
V =3.3V,
DD
PV =5.0V,
DD
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)
(for APA2176A)
• Lead Free and Green Devices Available
(RoHS Compliant)
Simplified Application Circuit
General Description
The APA2176/2176A is a stereo, fixed gain, and cap-free
headphone driver which is available in a 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 =3.3V,
DD
PV =5.0V
DD
into
16Ω.
In
addition, it provides thermal and short circuit protections.
Applications
• Headsets
• PDAs
• Portable Multimedia Devices
• Notebooks
R-CH
Input
RIN
L-CH
Input
LIN
APA2176/2176A
Shutdown
Control
RSD
LSD
Stereo
Headphone
ROUT
LOUT
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.3 - May., 2009
1
www.anpec.com.tw
1 page  
APA2176/2176A
Electrical Characteristics (Cont.)
Unless otherwise specified, these specifications apply over VDD=3.3V, PVDD=5V, VPGND=VGND=0V, and CCPO=CCPF=2.2µF.
Typical values are at TA=25oC.
Symbol
Parameter
VDD=1.8V, PVDD=3.0V, TA=25 C
PO Output Power
THD+N
Total Harmonic Distortion Pulse
Noise
Crosstalk Channel Separation
PSRR
VOS
S/N
Power Supply Rejection Ratio
Output Offset Voltage
Signal to Noise Ratio
Test Conditions
APA2176/2176A
Min. Typ. Max.
THD+N = 1%, fin=1kHz, in Phase
RL = 16Ω
RL = 32Ω
THD+N = 10%, fin=1kHz, in Phase
RL = 16Ω
RL = 32Ω
fin = 1kHz
PO = 40mW, RL = 16Ω
PO = 30mW, RL = 32Ω
VO = 0.9Vrms, RL = 10kΩ
fin = 1kHz
PO = 40mW, RL = 16Ω
VO = 0.9Vrms, RL = 10kΩ
RL = 16Ω, fin=217Hz
RL = 32Ω
With A-weighting Filter
PO = 30mW, RL = 32Ω
55
35 40
70
45 55
-
0.04
0.03
0.002
- 78
90
- 82
-5 -
- 95
-
-
-
-
-
5
-
Vn Noise Output Voltage
RL = 32Ω
- 15 -
Unit
mW
%
dB
dB
mV
dB
µV
(rms)
Copyright © ANPEC Electronics Corp.
Rev. A.3 - May., 2009
5
www.anpec.com.tw
5 Page 
APA2176/2176A
Typical Operating Characteristics (Cont.)
Output Noise Voltage vs. Frequency
50µ
Output Noise Voltage vs. Frequency
50µ
20µ Right channel
10µ Left channel
20µ Right channel
Left channel
10µ
VDD=1.8V
PVDD=3.0V
RL=16Ω
Cin=1µF
A-Weighting
1µ
20
100
1k
Frequency (Hz)
10k 20k
Frequency Response
+4
+220
Gain
+3 +200
+2
+1
+0
10
+4
Phase
+180
VDD=3.3V
PVDD=5.0V
RL=16Ω
Cin=1µF
+160
100 1k 10k
Frequency (Hz)
+140
200k
Frequency Response
+220
Gain
+3 +200
+2 +180
Phase
+1
VDD=1.8V
PVDD=3.0V
+160
RL=16Ω
Cin=1µF
+0
10
100 1k
10k
Frequency (Hz)
+140
200k
Copyright © ANPEC Electronics Corp.
Rev. A.3 - May., 2009
11
VDD=1.8V
PVDD=3.0V
RL=10kΩ
Cin=1µF
A-Weighting
1µ
20
100
1k
Frequency (Hz)
10k 20k
Frequency Response
+4 +220
Gain
+3 +200
+2 +180
Phase
+1
VDD=3.3V
PVDD=5.0V
+160
RL=10kΩ
Cin=1µF
+0
10
100 1k
10k
Frequency (Hz)
+140
200k
Frequency Response
+4
+220
Gain
+3 +200
+2 +180
Phase
+1
VDD=1.8V
+160
PVDD=3.0V
RL=10kΩ
Cin=1µF
+0
10 100 1k 10k
+140
200k
Frequency (Hz)
www.anpec.com.tw
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet APA2176.PDF ] | |
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