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參數(shù)資料
| 型號(hào)： | OPA832ID |
| 英文描述： | Low-Power, Single-Supply, Fixed-Gain Video Buffer Amplifier |
| 中文描述： | 低功耗，單電源，固定增益視頻緩沖放大器 |
| 文件頁數(shù)： | 16/26頁 |
| 文件大?。?/td> | 471K |
| 代理商： | OPA832ID |
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SBOS266B JUNE 2003 REVISED SEPTEMBER 2004
www.ti.com
16
SINGLE-SUPPLY ADC INTERFACE
The circuit shown in Figure 6 uses the OPA832 as a
differential driver followed by an RC filter. In this circuit, the
single-ended to differential conversion is realized by a 1:1
transformer driving the noninverting inputs of the two
OPA832s. The common-mode level (CML) of the
ADS5203 is reduced to the appropriate input level of
0.885V by the network divider composed of R
1
and the
CML output impedance, and connected to the transformer
center tap, biasing the OPA832s. This input bias voltage
is then amplified to provide the correct common-mode
voltage to the input of the ADC. Using only 25.1mW power
(3.8mA
×
2 amplifiers
×
3.3V), this configuration (amplifier
+ ADC) provides greater than 59dB SNR and 70dB SFDR
to 2MHz, with all the components running on a low +3.3V
supply.
R
F
400
R
G
400
C
15pF
C
1
0.1
μ
F
IN
IN
CML
1/2
ADS5203
10Bit
40MSPS
OPA832
OPA832
+3.3V
+3.3V
+3.3V
R
F
400
R
G
400
R
1.91k
R
S
50
R
S
50
R
T
20
R
T
20
R
M
50
1:1
2.3k
Output
Impedance
V
IN
50
Source
V
CM
= 0.885V
Figure 6. Low-Power, Single-Supply ADC Driver
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OPA832IDR | Low-Power, Single-Supply, Fixed-Gain Video Buffer Amplifier |
| OPA843ID | Wideband, Low Distortion, Medium Gain, Voltage-Feedback OPERATIONAL AMPLIFIER |
| OPA843IDR | Wideband, Low Distortion, Medium Gain, Voltage-Feedback OPERATIONAL AMPLIFIER |
| OPA843 | Wideband, Low Distortion, Medium Gain, Voltage-Feedback OPERATIONAL AMPLIFIER |
| OPA843IDBVR | Wideband, Low Distortion, Medium Gain, Voltage-Feedback OPERATIONAL AMPLIFIER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA832IDBVR | 功能描述:視頻放大器 Lo-Pwr Single-Supply Fixed-Gain Video Bfr RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| OPA832IDBVRG4 | 功能描述:視頻放大器 Lo-Pwr Single-Supply Fixed-Gain Video Bfr RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| OPA832IDBVT | 功能描述:視頻放大器 Lo-Pwr Single-Supply Fixed-Gain Video Bfr RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| OPA832IDBVTG4 | 功能描述:視頻放大器 Lo-Pwr Single-Supply Fixed-Gain Video Bfr RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
| OPA832IDG4 | 功能描述:視頻放大器 Lo-Pwr Single-Supply Fixed-Gain Video Bfr RoHS:否 制造商:ON Semiconductor 通道數(shù)量:4 電源類型: 工作電源電壓:3.3 V, 5 V 電源電流: 最小工作溫度: 最大工作溫度: 封裝 / 箱體:TSSOP-14 封裝:Reel |
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