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參數(shù)資料
| 型號： | VCA810AIDR |
| 英文描述： | High Gain Adjust Range, Wideband, Voltage-Controlled Amplifier |
| 中文描述： | 高增益調(diào)整范圍，寬帶，電壓控制放大器 |
| 文件頁數(shù)： | 18/25頁 |
| 文件大小： | 417K |
| 代理商： | VCA810AIDR |
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SBOS275C JUNE 2003 REVISED OCTOBER 2004
www.ti.com
18
Evaluation of this response equation reveals a passband
gain of A
O
= –1, a bandwidth of BW = 1/2nRC, and a
VC
selectivity of
Q
control voltage V
C
alters Q but not bandwidth.
n
10
1
. Note that variation of
The gain provided by the VCA810 restricts the output
swing of the filter. Output signal V
O
must be constrained to
a level that does not drive the VCA810 output, V
OA
, into its
saturation limit. Note that these two outputs have voltage
swings related by V
OA
= GV
O
. Thus, a swing limit V
OAL
imposes a circuit output limit of V
OL
≤
V
OAL
/G.
Figure 16 shows the frequency response for two different
gain conditions of the schematic shown in Figure 15.
In particular, notice the center frequency shift and the
selectivity of Q changing as the gain is increased.
V
O
V
I
s
nRC
s
2
s
nRC
G
R
2
C
2
f
O
10
(VC
1)
2 RC
BW
1
2 RC
Q
n
10
(VC
1)
A
O
1
VCA810
1/2
OPA2822
nR
5k
R
330
nR
5k
C
0.047
μ
F
V
C
R
330
50
50
V
OA
C
0.047
μ
F
V
I
V
O
1/2
OPA2822
Figure 15. Tunable Band-Pass Filter
0
5
10
15
20
25
30
35
40
45
50
Frequency (Hz)
100
1k
10k
100k
G
Figure 16. Tunable Band-Pass Filter Response
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| VCA810AIDRG4 | 功能描述:特殊用途放大器 High-Gain Adj Range Wideband Vltg-Cntrl RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| VCA810ID | 功能描述:特殊用途放大器 High-Gain Adj Range Wideband Vltg-Cntrl RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| VCA810IDG4 | 功能描述:特殊用途放大器 High-Gain Adj Range Wideband Vltg-Cntrl RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| VCA810IDR | 功能描述:特殊用途放大器 High-Gain Adj Range Wideband Vltg-Cntrl RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| VCA810IDRG4 | 功能描述:特殊用途放大器 High-Gain Adj Range Wideband Vltg-Cntrl RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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