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參數(shù)資料
| 型號： | THS6043CD |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | 350 mA, 【12 V ADSL CPE LINE DRIVERS |
| 中文描述： | 350毫安，【12伏ADSL終端線路驅(qū)動器 |
| 文件頁數(shù)： | 27/33頁 |
| 文件大?。?/td> | 509K |
| 代理商： | THS6043CD |
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THS6042, THS6043
350 mA,
±
12 V ADSL CPE LINE DRIVERS
SLOS264G
–
MARCH 2000
–
REVISED DECEMBER 2001
27
POST OFFICE BOX 655303
DALLAS, TEXAS 75265
APPLICATION INFORMATION
shutdown control
The THS6043 is essentially the same amplifier as the THS6042. The only difference is the added flexibility of
a shutdown circuit. When the shutdown pin signal is low, the THS6043 is active. But, when a shutdown pin is
high (
≥
2 V), the THS6043 is turned off. The shutdown logic is not latched and should always have a signal
applied to it. To help ensure a fixed logic state, an internal 50 k
resistor to GND is utilized. An external resistor,
such as a 3.3 k
, to GND may be added to help improve noise immunity within harsh environments. If no
external resistor is utilized and SHDN pin is left unconnected, the THS6043 defaults to a power-on state. A
simplified circuit can be seen in Figure 47
.
+VCC
To Internal
Bias Circuitry
Control
–
VCC
GND
GND
50 k
SHDN
Figure 47. Simplified THS6043 Shutdown Control Circuit
One aspect of the shutdown feature, which is often over-looked, is that the amplifier does not have a large output
impedance while in shutdown mode. This is due to the R
F
and R
G
resistors. This effect is true for any amplifier
connected as an amplifier with gains >1. The internal circuitry may be powered down and in a high-impedance
state, but the resistors are always there. This allows the signal to flow through these resistors and into the ground
connection. Figure 48 shows the results of the output impedance with no feedback resistor and a typically
configured amplifier.
0.01
0.1
1
10
100
1000
10 K
100 K
1 M
10 M
100 M
1 G
S
–
f
–
Frequency
–
Hz
Open Loop
VCC =
±
5 V to
±
15 V
Gain =
–
8
RF = 750
Figure 48. Output Impedance In Shutdown Mode
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PDF描述 |
|---|---|
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| THS6072D | LOW-POWER ADSL DIFFERENTIAL RECEIVER |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS6043CDG4 | 功能描述:高速運算放大器 350-mA +/-12V ADSL CPE Ln Drv w/Shtdwn RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS6043CDR | 功能描述:高速運算放大器 350-mA +/-12V ADSL CPE Ln Drv w/Shtdwn RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS6043CDRG4 | 功能描述:高速運算放大器 350-mA +/-12V ADSL CPE Ln Drv w/Shtdwn RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS6043CPWP | 功能描述:高速運算放大器 350-mA +/-12V ADSL CPE Ln Drv w/Shtdwn RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| THS6043CPWPG4 | 功能描述:高速運算放大器 350-mA +/-12V ADSL CPE Ln Drv w/Shtdwn RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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