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參數(shù)資料
| 型號： | OPA689 |
| 元件分類： | 運(yùn)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)： | 11/16頁 |
| 文件大小： | 175K |
| 代理商： | OPA689 |
11
OPA689
TYPICAL APPLICATIONS
DUAL SUPPLY, NON-INVERTING AMPLIFIER
Figure 1 shows a non-inverting gain amplifier for dual
supply operation. This circuit was used for AC characteriza-
tion of the OPA689, with a 50
source, which it matches,
and a 500
load. The power supply bypass capacitors are
shown explicitly in Figures 1 and 2, but will be assumed in
the other figures. The limiter voltages (V
H
and V
L
) and their
bias currents (I
VH
and I
VL
) have the polarities shown.
SINGLE SUPPLY, NON-INVERTING AMPLIFIER
Figure 2 shows an AC coupled, non-inverting gain amplifier
for single supply operation. This circuit was used for AC
characterization of the OPA689, with a 50
source, which
it matches, and a 500
load. The power supply bypass
capacitors are shown explicitly in Figures 1 and 2, but will
be assumed in the other figures. The limiter voltages (V
H
and V
L
) and their bias currents (I
VH
and I
VL
) have the
polarities shown. Notice that the single supply circuit can
use 3 resistors to set V
H
and V
L
, where the dual supply
circuit usually uses 4 to reference the limit voltages to
ground.
LOW DISTORTION, ADC INPUT DRIVER
The circuit in Figure 3 shows an inverting, low distortion
ADC driver that operates on single supply. The converter’s
internal references bias the op amp input. The 4.0pF and
18pF capacitors form a compensation network that allows
FIGURE 3. Low Distortion, Limiting ADC Input Driver.
FIGURE 1. DC-Coupled, Dual Supply Amplifier.
FIGURE 2. AC-Coupled, Single Supply Amplifier.
OPA689
49.9
6
I
VH
V
O
V
IN
I
VL
–V
S
= –5V
3
2
4
7
8
5
R
F
750
R
G
150
500
0.1μF
0.1μF
0.1μF
100
3.01k
1.91k
3.01k
1.91k
0.1μF
V
H
= +2V
V
L
= –2V
+
2.2μF
+
2.2μF
+V
S
= +5V
OPA689
53.6
6
I
VH
V
H
= 3.7V
V
O
V
L
= 1.3V
V
IN
I
VL
1.50k
3
2
4
7
8
5
1.50k
523
976
523
R
G
150
R
F
750
500
0.1μF
0.1μF
0.1μF
+
2.2μF
0.1μF
V
S
= +5V
0.1μF
0.1μF
OPA689
V
S
= +5V
V
S
= +5V
4
3
2
7
5
8
6
V
S
= +5V
V
IN
4.0pF
750
0.1
F
REFB
REFT
IN
INT/EXT
RSEL
+V
S
GND
0.1
μ
F
18pF
100pF
V
H
= +3.6V
V
L
= +1.4V
+2.5V
374
1.40k
24.9
1.40k
0.1
μ
F
0.1
μ
F
787
100
100
787
ADS822
10-Bit
40MSPS
10-Bit
Data
+1.5V
+3.5V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA689M | 制造商:TI 制造商全稱:Texas Instruments 功能描述:GAIN 4 STABLE WIDEBAND VOLTAGE-LIMITING AMPLIFIER |
| OPA689MJD | 制造商:Texas Instruments 功能描述:OP Amp Single Volt Fdbk ±6V/12V 8-Pin SBCDIP Tube |
| OPA689P | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Texas Instruments 功能描述: |
| OPA689U | 制造商:BB 制造商全稱:BB 功能描述:EVALUATION FIXTURE |
| OPA689U/2K5 | 制造商:Rochester Electronics LLC 功能描述:OP AMP WIDEBAND VOLT LIMITING - Bulk 制造商:Texas Instruments 功能描述: |
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