參數(shù)資料
型號(hào)： SA572DR2G
廠商： ON SEMICONDUCTOR
元件分類： 運(yùn)動(dòng)控制電子
英文描述： Programmable Analog Compandor
中文描述： DUAL COMPANDER, PDSO16
封裝： LEAD FREE, PLASTIC, SOIC-16
文件頁數(shù)： 9/12頁
文件大小： 224K
代理商： SA572DR2G
SA572
http://onsemi.com
9
BUFFER
G
10 F
2.2 F
C
3
V
IN
V
OUT
Figure 9. Automatic Level Control
R
3
17.3k
9.1k
9.1k
R
DC1
R
4
R
DC2
C
DC
C
5
R
5
5532
+
V
OUT
100k
+
22 F
C
A
+
1 F
C
R
+
10 F
+
2.2 F
C
2
+
2.2 F
+
2.2 F
C
1
+
R
1
3.3k
R
X
6.8k
ATTACK
CAP
RECOVERY
CAP
V+
V
TO THD
TRIM PIN
OF 572
PINS 6, 10
1k
+
3, 13
4, 12
5, 11
2, 14
7, 9
DC
1
2
3
R
2
Automatic Level Control (ALC)
In the ALC configuration, the variable gain cell is placed
in the feedback loop of the operational amplifier and the
rectifier is connected to the input. As the input amplitude
increases above the crossover point, the overall system
gain decreases proportionally, holding the output
amplitude constant. As the input amplitude decreases
below the crossover point, the overall system gain
increases proportionally, holding the output amplitude at
the same constant level.
R1R2I1
2 R3VIN(avg)
where:
R
1
= 6.8 k (Internal)
R
2
= 3.3 k
R
3
= 17.3 k
I
1
= 140 A
Gain
The output DC level can be set using the following
equation:
V
OUT
DC
1
R
DC1
R
DC2
R
4
V
REF
where:
R
4
= 100 k
R
DC1
= R
DC2
= 9.1 k
V
REF
= 2.5 V
The output level is calculated using the following
equation:
VOUT_LEVEL
R1R2I1
2 R3
VIN
VIN(avg)
where:
R
1
= 6.8 k (Internal)
R
2
= 3.3 k
R
3
= 17.3 k
I
1
= 140 A
VIN
VIN(avg)
2 2
1.11 (for sine waves)
Note that for very low input levels, ALC may not be
desired and to limit the maximum gain, resistor R
X
has
been added.
Gain max.
R1
VREF
Rx
· R2· IB
2 R3
Rx
((desired max gain)
26 k )
10 k
相關(guān)PDF資料
PDF描述
SA572DTB Programmable Analog Compandor
SA572DTBG Programmable Analog Compandor
SA572DTBR2 Programmable Analog Compandor
SA572DTBR2G Programmable Analog Compandor
SA572NG Programmable Analog Compandor
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
SA572DTB 功能描述:音頻放大器 Dual Channel Hi Perf RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
SA572DTBG 功能描述:音頻放大器 ANA COMPANDOR DUAL CHANEL RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
SA572DTBR2 功能描述:音頻放大器 Dual Channel Hi Perf RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
SA572DTBR2G 功能描述:音頻放大器 ANA COMPANDOR DUAL CHANEL RoHS:否 制造商:STMicroelectronics 產(chǎn)品:General Purpose Audio Amplifiers 輸出類型:Digital 輸出功率: THD + 噪聲: 工作電源電壓:3.3 V 電源電流: 最大功率耗散: 最大工作溫度: 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFP-64 封裝:Reel
SA572F 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Programmable analog compandor
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