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参数资料
| 型号： | SSM2019BRNZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/10页 |
| 文件大小： | 0K |
| 描述： | IC PREAMP AUDIO MONO AB 8SOIC |
| 标准包装： | 98 |
| 类型： | AB 类 |
| 输出类型： | 1-通道（单声道） |
| 电源电压： | 10 V ~ 36 V，±5 V ~ 18 V |
| 特点： | 差分输入 |
| 安装类型： | 表面贴装 |
| 供应商设备封装： | 8-SOIC |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 包装： | 管件 |
REV.
SSM2019
–6–
V+
V–
OUT
RG
+IN
–IN
RG1
RG2
SSM2019
REFERENCE
G =
VOUT
(+IN) – (–IN)
=
10k
RG
+ 1
Figure 1. Basic Circuit Connections
GAIN
The SSM2019 only requires a single external resistor to set the
voltage gain. The voltage gain,
G, is:
G
k
R
G
=+
10
1
W
and the external gain resistor,
RG , is:
R
k
G
=
10
1
W
–
For convenience, Table I lists various values of
RG for common
gain levels.
Table I. Values of RG for Various Gain Levels
RG ( )AV
dB
NC
1
0
4.7 k
3.2
10
1.1 k
10
20
330
31.3
30
100
40
32
314
50
10
1000
60
The voltage gain can range from 1 to 3500. A gain set resistor is
not required for unity gain applications. Metal film or wire-wound
resistors are recommended for best results.
The total gain accuracy of the SSM2019 is determined by the
tolerance of the external gain set resistor, RG, combined with the
gain equation accuracy of the SSM2019. Total gain drift combines
the mismatch of the external gain set resistor drift with that of
the internal resistors (20 ppm/
∞C typ).
Bandwidth of the SSM2019 is relatively independent of gain,
as shown in Figure 2. For a voltage gain of 1000, the SSM2019
has a small-signal bandwidth of 200 kHz. At unity gain, the
bandwidth of the SSM2019 exceeds 4 MHz.
1k
10M
VO
LTA
GE
GAIN
–
dB
60
10k
100k
1M
40
20
0
VS = 15V
TA = 25 C
Figure 2. Bandwidth for Various Values of Gain
NOISE PERFORMANCE
The SSM2019 is a very low noise audio preamplifier exhibiting
a typical voltage noise density of only 1 nV/
÷Hz at 1 kHz. The
exceptionally low noise characteristics of the SSM2019 are in
part achieved by operating the input transistors at high collector
currents since the voltage noise is inversely proportional to the
square root of the collector current. Current noise, however, is
directly proportional to the square root of the collector current.
As a result, the outstanding voltage noise performance of the
SSM2019 is obtained at the expense of current noise performance.
At low preamplifier gains, the effect of the SSM2019 voltage
and current noise is insignificant.
The total noise of an audio preamplifier channel can be calculated by:
Ee
i R
e
nn
n
S
t
=+
+
2
()
where:
En = total input referred noise
en = amplifier voltage noise
in = amplifier current noise
RS = source resistance
et = source resistance thermal noise
For a microphone preamplifier, using a typical microphone
impedance of 150
W, the total input referred noise is:
EnV Hz
pA
Hz
nV
Hz
nV
Hz
kHz
n
=+
+
=
()
(
/
)
( .
/
)
./
@
12
150
1 6
193
1
2
22
W
where:
en = 1 nV/
÷Hz @ 1 kHz, SSM2019 en
in = 2 pA/
÷Hz @ 1 kHz, SSM2019 in
RS = 150
W, microphone source impedance
et = 1.6 nV/
÷Hz @ 1 kHz, microphone thermal noise
This total noise is extremely low and makes the SSM2019
virtually transparent to the user.
A
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相关代理商/技术参数 |
参数描述 |
|---|---|
| SSM2019BRNZ | 制造商:Analog Devices 功能描述:IC AUDIO POWER AMP CLASS AB SOIC-8 |
| SSM2019BRNZRL | 功能描述:IC PREAMP AUDIO MONO AB 8SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:2,500 系列:DirectDrive® 类型:D 类 输出类型:1-通道（单声道），带立体声耳机 在某负载时最大输出功率 x 通道数量:930mW x 1 @ 8 欧姆; 40mW x 2 @ 16 欧姆 电源电压:2.7 V ~ 5.5 V 特点:消除爆音，差分输入，I²C，静音，关闭，音量控制 安装类型:表面贴装 供应商设备封装:25-WLP（2.09x2.09） 封装/外壳:25-WFBGA，WLCSP 包装:带卷 (TR) 其它名称:MAX97000EWA+T-ND |
| SSM2019BRW | 制造商:Analog Devices 功能描述:Audio Amp Microphone 1-CH Mono Class-AB 16-Pin SOIC W 制造商:Rochester Electronics LLC 功能描述:SELF CONTAINED AUDIO PRE-AMPLIFIER - Bulk 制造商:Analog Devices 功能描述:IC PRE-AMP AUDIO |
| SSM2019BRWRL | 制造商:Analog Devices 功能描述:Audio Amp Microphone 1-CH Mono Class-AB 16-Pin SOIC W T/R |
| SSM2019BRWZ | 功能描述:IC PREAMP AUDIO MONO AB 16SOIC RoHS:是 类别:集成电路 (IC) >> 线性 - 音頻放大器 系列:- 标准包装:80 系列:- 类型:AB 类 输出类型:1-通道（单声道） 在某负载时最大输出功率 x 通道数量:1.25W x 1 @ 8 欧姆 电源电压:2.5 V ~ 5.5 V 特点:消除爆音，差分输入，关闭，热保护 安装类型:表面贴装 供应商设备封装:8-MSOP-PowerPad 封装/外壳:8-TSSOP，8-MSOP（0.118"，3.00mm 宽）裸露焊盘 包装:管件 配用:296-31419-ND - EVAL MODULE FOR TPA6205A1 其它名称:296-34563-5TPA6205A1DGN-ND |
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