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參數(shù)資料
| 型號： | OPA699IDR |
| 元件分類： | 運動控制電子 |
| 英文描述： | Wideband, High Gain VOLTAGE LIMITING AMPLIFIER |
| 中文描述： | 寬帶，高增益電壓限幅放大器 |
| 文件頁數(shù)： | 18/25頁 |
| 文件大?。?/td> | 461K |
| 代理商： | OPA699IDR |
OPA699
SBOS261B
18
www.ti.com
LIMITED OUTPUT, DIFFERENTIAL ADC INPUT DRIVER
Figure 7 shows a differential ADC driver that takes advan-
tage of the OPA699 limiters to protect the input of the ADC.
Two OPA699s are used. The first one is an inverting configu-
ration at a gain of
–
2. The second one is in a noninverting
configuration at a gain of +2. Refer to the section, Low Gain
Compensation for Improved SFDR for a discussion of stabil-
ity issues of the OPA699 operating at a gain less than 4.
Each amplifier is swinging 2V
PP
providing a 4V
PP
differential
signal to drive the input of the ADC. Limiters have been set
100mV away from the magnitude of each amplifier maximum
signal to provide input protection for the ADC while maintain-
ing an acceptable distortion level.
PRECISION HALF WAVE RECTIFIER
Figure 8 shows a half-wave rectifier with outstanding preci-
sion and speed. V
H
(pin 8) will default to a 3.5 typically if left
open, while the negative limit is set to ground.
The gain for the circuit in Figure 8 is set at +6. Figure 9 shows
input and output for
±
0.5V 100MHz input.
VERY HIGH-SPEED SCHMITT TRIGGER
Figure 10 shows a very high-speed Schmitt Trigger. The
output levels are precisely defined, and the switching time is
exceptional. The output voltage swings between V
H
and V
L
.
OPA699
+5V
–
5V
V
IN
=
200mV
PP
1k
24.9
1k
1k
0.01
μ
F
10pF
10pF
0.01
μ
F
24.9
100
100
OPA699
+5V
–
5V
900
+1.1V
–
1.1V
IN
V
CM
ADC
IN
+1.1V
4V
PP
–
1.1V
100
OPA699
6
V
O
V
O
= Open
–
V
S
=
–
5V
+V
S
= +5V
V
IN
2
3
4
7
8
5
750
150
75
50
Source
Time (5ns/div)
Output
Input
I
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0
–
0.5
–
1.0
OPA699
R
2
402
R
1
200
R
3
200
V
REF
V
OUT
V
H
V
L
+2V
–
2V
V
IN
FIGURE 8. Precision Half-Wave Rectifier.
FIGURE 9. 100MHz Sinewave Rectified.
FIGURE 10. Very High-Speed Schmitt Trigger.
FIGURE 7. Single to Differential AC-Coupled, High Gain Output Limited ADC Driver.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA699IDRG4 | 功能描述:高速運算放大器 Wideband High Gain Vltg Limiting 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(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| OPA699M | 制造商:TI 制造商全稱:Texas Instruments 功能描述:GAIN 4 STABLE WIDEBAND VOLTAGE LIMITING AMPLIFIER |
| OPA699MJD | 制造商:Texas Instruments 功能描述:OP Amp Single Volt Fdbk ±6V/12V 8-Pin SBCDIP Tube |
| OPA703 | 制造商:TI 制造商全稱:Texas Instruments 功能描述:CMOS, Rail-to-Rail, I/O OPERATIONAL AMPLIFIERS |
| OPA703_08 | 制造商:BB 制造商全稱:BB 功能描述:CMOS, Rail-to-Rail, I/O OPERATIONAL AMPLIFIERS |
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