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參數(shù)資料
| 型號： | SA572DTBR2G |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 12/12頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC COMPANDOR 2CHAN GAIN 16-TSSOP |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 類型： | 壓縮擴展器 |
| 應(yīng)用： | 自動電平控制，立體聲擴展器 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 16-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 16-TSSOP |
| 包裝： | 剪切帶 (CT) |
| 其它名稱： | SA572DTBR2GOSCT |
SA572
http://onsemi.com
9
BUFFER
D
G
10 mF
2.2 mF
C3
VIN
VOUT
Figure 9. Automatic Level Control
R3
17.3k
9.1k
RDC1
R4
RDC2
CDC
C5
R5
5532
+
VOUT
100k
+
22 mF
CA
+
1 mF
CR
+
10 mF
+
2.2 mF
C2
+
2.2 mF
+
2.2 mF
C1
+
R1
3.3k
RX
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
R2
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.
Gain +
R1 R2 I1
2R3 VIN(avg)
where:
R1 = 6.8 kW (Internal)
R2 = 3.3 kW
R3 = 17.3 kW
I1 = 140 mA
The output DC level can be set using the following
equation:
V
OUT DC +
1 )
R
DC1 ) RDC2
R4
VREF
where:
R4 = 100 kW
RDC1 = RDC2 = 9.1 kW
VREF = 2.5 V
The output level is calculated using the following
equation:
VOUT_LEVEL +
R1 R2 I1
2R3
VIN
VIN (avg)
where:
R1 = 6.8 kW (Internal)
R2 = 3.3 kW
R3 = 17.3 kW
I1 = 140 mA
VIN
VIN (avg)
+ p
22
+ 1.11 (for sine waves)
Note that for very low input levels, ALC may not be
desired and to limit the maximum gain, resistor RX has
been added.
Gain max. +
R1)Rx
VREF R2 IB
2R3
Rx ^ ((desired max gain)
26 kW) * 10 kW
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA572F | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Programmable analog compandor |
| SA572N | 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 |
| SA572NG | 功能描述:音頻放大器 Dual Channel Hi Perf Compandor Ind. Temp 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 |
| SA575 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage compandor |
| SA5751D | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Cell-Phone Circuit |
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