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PDF SGM8904 Data sheet ( Hoja de datos )
| Número de pieza | SGM8904 | |
| Descripción | Capless 2Vrms to 3Vrms Line Driver | |
| Fabricantes | SG Micro | |
| Logotipo |  |
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SGM8904
Capless 2Vrms to 3Vrms Line
Driver with Adjustable Gain
GENERAL DESCRIPTION
The SGM8904 is a 2Vrms to 3Vrms Pop&Click-less
stereo line driver designed to allow the removal of the
output dc-blocking capacitors for reduced component
count and cost. The device is ideal for single supply
electronics where size and cost are critical design
parameters.
The SGM8904 is capable of driving 3Vrms into a 2.5kΩ
load with 5V supply voltage. The device has single input
and uses external gain setting resistors, that supports a
gain range of ±1V/V to ±10V/V. The use of external gain
resistors also allows the implementation of a 2nd order
low pass filter to compliment DAC's and SOC converters.
The SGM8904 has build-in shutdown control for
Pop&Click-free on/off control.
FEATURES
z Capless Structure
Eliminates Pop/Clicks
Eliminates Output DC-Blocking Capacitors
Provides Flat Frequency Response DC to 20kHz
z Low Noise and THD
Typical SNR = 107dB
Typical VN = 8µVrms
Typical THD+N = 0.001% (f = 1kHz)
z 2Vrms Output Voltage into 2.5kΩ Load with 3.3V
Supply Voltage
z 3Vrms Output Voltage into 2.5kΩ Load with 5V
Supply Voltage
Using the SGM8904 in audio products can reduce
component count compared to traditional methods of
generating a 3Vrms output. The SGM8904 doesn't
require a power supply greater than 5V to generate its
8.5VPP output, nor does it require a split rail power supply.
The SGM8904 integrates its own charge pump to
generate a negative supply rail that provides a clean,
pop&click-less ground biased 3Vrms output.
APPLICATIONS
Set-Top Box
LCD TV
Blue-Ray DVD-Players
Home Theater in a Box
The SGM8904 is available in Green MSOP10 package. It
operates over an ambient temperature range of -40℃ to
+85℃.
SG Micro Limited
www.sg-micro.com
1
1 page  
SGM8904
Capless 2Vrms to 3Vrms Line
Driver with Adjustable Gain
TYPICAL PERFORMANCE CHARACTERISTICS
VDD = 3.3V, TA = 25℃, RL = 2.5kΩ, C(PUMP) = C(PVSS) = 1µF, CIN = 10µF, RIN = 10kΩ, RFB = 20kΩ (unless otherwise noted).
THD+N vs. Output Voltage
10
VDD = 5V, RL = 100kΩ
1 f = 1kHz
0.1
0.01
0.001
0.0001
0.1
1
Output Voltage (Vrms)
10
THD+N vs. Output Voltage
10
VDD = 3.3V, RL = 100kΩ
1 f = 1kHz
0.1
0.01
0.001
0.0001
0.1
1
Output Voltage (Vrms)
10
THD+N vs. Output Voltage
100
VDD = 5V, RL = 2.5kΩ
10 f = 1kHz
1
0.1
0.01
0.001
0.1
1
Output Voltage (Vrms)
10
THD+N vs. Output Voltage
10
VDD = 3.3V, RL = 2.5kΩ
1
0.1
0.01
f = 20Hz
0.001
0.0001
0.1
f = 1kHz f = 6.8kHz
1
Output Voltage (Vrms)
10
THD+N vs. Output Voltage
10
VDD = 5V, RL = 600Ω
f = 1kHz
1
0.1
0.01
0.001
0.1
1
Output Voltage (Vrms)
10
THD+N vs. Output Voltage
10
VDD = 3.3V, RL = 600Ω
f = 1kHz
1
0.1
0.01
0.001
0.1
1
Output Voltage (Vrms)
10
SG Micro Limited
www.sg-micro.com
5
5 Page | ||
| Páginas | Total 9 Páginas | |
| PDF Descargar | [ Datasheet SGM8904.PDF ] | |
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