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SGM8904のメーカーはSG Microです、この部品の機能は「Capless 2Vrms to 3Vrms Line Driver」です。 |
部品番号 | SGM8904 |
| |
部品説明 | Capless 2Vrms to 3Vrms Line Driver | ||
メーカ | SG Micro | ||
ロゴ | |||
このページの下部にプレビューとSGM8904ダウンロード(pdfファイル)リンクがあります。 Total 9 pages
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
PIN CONFIGURATION (TOP VIEW)
Capless 2Vrms to 3Vrms Line
Driver with Adjustable Gain
-INR 1
OUTR 2
EN 3
PVSS 4
CN 5
MSOP10
10 -INL
9 OUTL
8 GND
7 PVDD
6 CP
PIN DESCRIPTION
PIN NAME
FUNCTION
1
-INR
Right channel OPAMP negative input
2
OUTR
Right channel OPAMP output
3 EN Enable input, active high
4
PVSS
Negative supply voltage output
5 CN Charge pump flying capacitor negative terminal
6 CP Charge pump flying capacitor positive terminal
7
PVDD
Positive supply
8
GND
Ground
9
OUTL
Left channel OPAMP output
10 -INL Left channel OPAMP negative input
SG Micro Limited
www.sg-micro.com
3
3Pages 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. Frequency
1
VDD = 5V, RL = 2.5kΩ
VO = 2Vrms
0.1
0.01
THD+N vs. Frequency
1
VDD = 3.3V, RL = 2.5kΩ
0.1
0.01
VO = 200mVrms
0.001
0.01
0.1 1 10
Frequency (kHz)
100
0.001
0.01
VO = 2Vrms
0.1 1 10
Frequency (kHz)
100
FFT vs. Frequency
0
-20
VDD = 5V, RL = 100kΩ
VO = 3mVrms
-40
-60
-80
-100
-120
-140
-160
0
5 10 15
Frequency (kHz)
20
25
FFT vs. Frequency
0
-20
VDD = 3.3V, RL = 2.5kΩ
VO = 2mVrms
-40
-60
-80
-100
-120
-140
-160
0
5 10 15
Frequency (kHz)
20
25
Gain vs. Frequency
8
VDD = 5V, RL = 100kΩ
7 VO = 2Vrms
6
5
4
3
0.01
0.1 1 10 100 1000
Frequency (kHz)
Supply Current vs. Supply Voltage
15
VIN = 0V
12 No Load
9
6
3
0
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Supply Voltage (V)
SG Micro Limited
www.sg-micro.com
6
6 Page | |||
ページ | 合計 : 9 ページ | ||
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PDF ダウンロード | [ SGM8904 データシート.PDF ] |
データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
部品番号 | 部品説明 | メーカ |
SGM8903 | Capless 3Vrms Line Driver | SG Micro |
SGM8904 | Capless 2Vrms to 3Vrms Line Driver | SG Micro |
SGM8905 | Capless 2Vrms to 3Vrms Line Driver | SG Micro |