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參數(shù)資料
| 型號： | THS3122ID |
| 廠商： | TEXAS INSTRUMENTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO8 |
| 封裝： | GREEN, PLASTIC, SOIC-8 |
| 文件頁數(shù)： | 5/34頁 |
| 文件大小： | 1276K |
| 代理商： | THS3122ID |
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49.9 W
1
F
m
100-
Load
W
+V
S
+V
S
R
G
-VS
R
F
R
5.11
ISO
W
49.9 W
1 F
m
100-
Load
W
+V
S
+V
S
R
G
-VS
R
F
5.11 W
27pF
560 W
R
IN
49.9 W
1
F
m
100-
Load
W
+V
S
+V
S
R
G
-VS
R
F
Ferrite
Bead
49.9 W
1 F
m
100-
Load
W
+V
S
+V
S
R
G
-VS
R
F
5.11 W
27pF
Ferrite
Bead
F
IN
SLOS382D
– SEPTEMBER 2001 – REVISED FEBRUARY 2011
Placing a small series resistor, RISO, between the
Figure 44 shows another method used to maintain
amplifier output and the capacitive load, as shown in
the low-frequency load independence of the amplifier
Figure 42, is an easy way of isolating the load
while isolating the phase shift caused by the
capacitance.
capacitance at high frequency. At low frequency,
feedback is mainly from the load side of RISO. At high
frequency, the feedback is mainly via the 27-pF
capacitor. The resistor RIN in series with the negative
input is used to stabilize the amplifier and should be
equal to the recommended value of RF at unity gain.
Replacing RIN with a ferrite of similar impedance at
about 100 MHz as shown in Figure 45 gives similar
results with reduced dc offset and low frequency
noise.
Figure 42. Resistor to Isolate Capacitive Load
shows, is another approach of isolating the output of
the amplifier. The ferrite impedance characteristic
versus frequency is useful to maintain the low
frequency load independence of the amplifier while
isolating the phase shift caused by the capacitance at
high frequency. Use a ferrite with similar impedance
to RISO, 20 Ω to 50 Ω, at 100 MHz and low
Figure 44. Feedback Technique with Input
impedance at dc.
Resistor for Capacitive Load
Figure 43. Ferrite Bead to Isolate Capacitive Load
Figure 45. Feedback Technique with Input Ferrite
Bead for Capacitive Load
2001–2011, Texas Instruments Incorporated
13
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| THS3122IDDA | 功能描述:高速運算放大器 Dual High Output Current 120-MHz 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 |
| THS3122IDDAG3 | 功能描述:高速運算放大器 Dual High Output Current 120-MHz 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 |
| THS3122IDDAR | 功能描述:高速運算放大器 Dual High Output Current 120-MHz 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 |
| THS3122IDDARG3 | 功能描述:高速運算放大器 Dual High Output Current 120-MHz 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 |
| THS3122IDG4 | 功能描述:高速運算放大器 Dual High Output Current 120-MHz 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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