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PDF APA2171 Data sheet ( Hoja de datos )
| Número de pieza | APA2171 | |
| Descripción | Differential Input Cap-Free Line Driver | |
| Fabricantes | ANPEC | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de APA2171 (archivo pdf) en la parte inferior de esta página. Total 21 Páginas | ||
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APA2171
Stereo, Differential Input Cap-Free Line Driver
Features
General Description
• Operating Voltage: 3V~3.6V
• Differential Input
• Ground Reference Output
- No Output Capacitor Required (for DC Blocking)
- Save the PCB Space
- Reduce the BOM Costs
- Improve the Low Frequency Response
• Low Noise and THD+N
- SNR > 108dB
- Noise < 8µVrms
- THD+N < 0.02% at 20Hz~20kHz
• Output Voltage Swing Can Reach 2.1Vrms/Ch into
2.5kΩ at VDD=3.3V
• High PSRR: 80dB at 217Hz
• Fast Start-up Time: 500µs
• Integrate the De-Pop Circuitry
• Thermal and Short-Circuit Protection
• Surface-Mount Packaging
- SOP-14
- TSSOP-14
• Lead Free and Green Devices Available
(RoHS Compliant)
Applications
The APA2171 is a stereo, differential input, single supply,
and cap-free line driver, which is available in SOP-14 and
TSSOP-14 packages.
The APA2171 is ground-reference output, and doesn’t
need the output capacitors for DC blocking. The advan-
tages of eliminating the output capacitor are saving the
cost, eliminating component height, and improving the
low frequency response.
The external gain setting is recommended using from
±1V/V to ±10V/V. High PSRR provides increased immu-
nity to noise and RF rectification. APA2171 has shutdown
and under-voltage detector function for Depop solution.
The APA2171 is capable of driving 2.1Vrms at 3.3V into
2.5kΩ load, and provides short-circuit and thermal pro-
tection.
Simplified Application Circuit
Stereo
Input Signal
APA2171
Stereo
Line-Out
Signal
• Set-Top Boxes
• CD/DVD Players
• LCD TVs
• HTIBs (Home Theater in Box)
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.4 - Aug., 2013
1
www.anpec.com.tw
1 page  
APA2171
Typical Operating Characteristics
THD+N vs. Output Power
10
VDD=3.3V
RL=32Ω
Cin=2.2µF
fin=1kHz
1 Av=2V/V
In phase
out phase
0.1
THD+N vs. Output Voltage
10 In phase
VDD=3.3V
RL=600Ω
1 Cin=2.2µF
fin=1kHz
Av=2V/V
0.1
0.01
0.01
0
10 20 30 40 50
Output Power (mW)
60
0.001
0
0.5 1 1.5 2
Output Voltage (V)
2.5
THD+N vs. Output Voltage
10 In phase
VDD=3.3V
RL=10kΩ
1 Cin=2.2µF
fin=1kHz
Av=2V/V
0.1
THD+N vs. Output Voltage
10
In phase
VDD=3.3V
RL=100kΩ
1 Cin=2.2µF
fin=1kHz
Av=2V/V
0.1
0.01 0.01
0.001
0
0.5 1 1.5 2
Output Voltage (V)
2.5
THD+N vs. Frequency
1
In phase
VDD=3.3V
RL=32Ω
Cin=2.2µF
0.1 Av=2V/V
0.001
0
0.5 1 1.5 2
Output Voltage (V)
2.5
THD+N vs. Frequency
1
In phase
VDD=3.3V
RL=600Ω
Cin=2.2µF
0.1 Av=2V/V
0.01
Po=2mW
Po=10mW
Po=20mW
0.001
20
100 1k
Frequency (Hz)
10k 20k
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2013
5
0.01
0.001
0.0005
20
Vo=1Vrms
Vo=2Vrms
100 1k
Frequency (Hz)
10k 20k
www.anpec.com.tw
5 Page 
APA2171
Typical Application Circuit (Cont.)
Line Driver Amplifier (Cont.)
3. Differential
RFB
R-CH
Input
L-CH
Input
CIN
1µF
RIN
CIN
1µF
RIN
CIN
1µF RIN
RFB
RFB
CIN
1µF
RIN
Shutdown SDN
Control
RFB
RINN
RINP
LINP
LINN
RSD
100Ω
Thermal
and Over
Current
Protection
Shutdown
Circuit
ROUT
R-CH
Output
Under Voltage
Detection Circuit
Power
and
Depop
Circuit
Charge
Pump
LOUT
UVP
VDD
L-CH
Output
R1
3kΩ
R3
50kΩ
R2
1kΩ
LDO
CPP
CCPF
CPN
1µF
1µF
System
Power
10µF
Second-Order Active Low-Pass Filter
1. Differential
GND PGND
VSS
CCPO
1µF
R-CH
Input
L-CH
Input
R2
C3
R1
C2
R1
C3 R2
C1
R3
R3
C1
RINN
RINP
C1
C3
R1
R2 R2 C1
C1
LINP
C2 R3
LINN
R1
C3
R3 C1
Shutdown SDN
Control
RSD
100Ω
Thermal
and Over
Current
Protection
Shutdown
Circuit
ROUT
Cout
220pF
R-CH
Output
Under Voltage
Detection Circuit
Power
and
Depop
Circuit
Charge
Pump
Cout
220pF
LOUT
UVP
VDD
L-CH
Output
R1
3kΩ
R3
50kΩ
R2
1kΩ
LDO
CPP
CCPF
CPN
1µF
1µF
System
Power
10µF
GND PGND
VSS
CCPO
1µF
Copyright © ANPEC Electronics Corp.
Rev. A.4 - Aug., 2013
11
www.anpec.com.tw
11 Page | ||
| Páginas | Total 21 Páginas | |
| PDF Descargar | [ Datasheet APA2171.PDF ] | |
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