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參數(shù)資料
| 型號(hào)： | SSM2019BNZ |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大小： | 0K |
| 描述： | IC PREAMP AUDIO MONO AB 8DIP |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 類型： | AB 類 |
| 輸出類型： | 1-通道（單聲道） |
| 電源電壓： | 10 V ~ 36 V，±5 V ~ 18 V |
| 特點(diǎn)： | 差分輸入 |
| 安裝類型： | 通孔 |
| 供應(yīng)商設(shè)備封裝： | 8-PDIP |
| 封裝/外殼： | 8-DIP（0.300"，7.62mm） |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁(yè)面： | 775 (CN2011-ZH PDF) |
REV.
–8–
PRINTED
IN
U.S.A.
SSM2019
BUS SUMMING AMPLIFIER
In addition to its use as a microphone preamplifier, the SSM2019
can be used as a very low noise summing amplifier. Such a circuit
is particularly useful when many medium impedance outputs
are summed together to produce a high effective noise gain.
The principle of the summing amplifier is to ground the SSM2019
inputs. Under these conditions, Pins 1 and 8 are ac virtual grounds
sitting about 0.55 V below ground. To remove the 0.55 V offset,
the circuit of Figure 5 is recommended.
A2 forms a “servo” amplifier feeding the SSM2019 inputs. This
places Pins l and 8 at a true dc virtual ground. R4 in conjunction
with C2 removes the voltage noise of A2, and in fact just about
any operational amplifier will work well here since it is removed
from the signal path. If the dc offset at Pins l and 8 is not too
critical, then the servo loop can be replaced by the diode biasing
scheme of Figure 5. If ac coupling is used throughout, then Pins 2
and 3 may be directly grounded.
–
IN
VOUT
SSM2019
R4
5.1k
R3
33k
C1
0.33 F
R2
6.2k
C2
200 F
+
IN
A2
R5
10k
V
IN4148
TO PINS
2 AND 3
Figure 5. Bus Summing Amplifier
A
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SSM2019BNZ | 制造商:Analog Devices 功能描述:Audio Power Amplifier IC |
| SSM2019BRN | 制造商:Analog Devices 功能描述:Audio Amp Microphone 1-CH Mono Class-AB 8-Pin SOIC N 制造商:Analog Devices 功能描述:IC PRE-AMP AUDIO |
| SSM2019BRNRL | 制造商:Analog Devices 功能描述:Audio Amp Microphone 1-CH Mono Class-AB 8-Pin SOIC N T/R |
| SSM2019BRNZ | 功能描述:IC PREAMP AUDIO MONO AB 8SOIC RoHS:是 類別:集成電路 (IC) >> 線性 - 音頻放大器 系列:- 標(biāo)準(zhǔn)包裝:80 系列:- 類型:AB 類 輸出類型:1-通道（單聲道） 在某負(fù)載時(shí)最大輸出功率 x 通道數(shù)量:1.25W x 1 @ 8 歐姆 電源電壓:2.5 V ~ 5.5 V 特點(diǎn):消除爆音，差分輸入，關(guān)閉，熱保護(hù) 安裝類型:表面貼裝 供應(yīng)商設(shè)備封裝:8-MSOP-PowerPad 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬）裸露焊盤 包裝:管件 配用:296-31419-ND - EVAL MODULE FOR TPA6205A1 其它名稱:296-34563-5TPA6205A1DGN-ND |
| SSM2019BRNZ | 制造商:Analog Devices 功能描述:IC AUDIO POWER AMP CLASS AB SOIC-8 |
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