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參數(shù)資料
| 型號： | OPA688P |
| 英文描述： | ECONOLINE: RB & RA - Dual Output from a Single Input Rail- Power Sharing on Output- Industry Standard Pinout- 1kVDC & 2kVDC Isolation- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 85% |
| 中文描述： | 單位增益穩(wěn)定，寬帶電壓限幅放大器 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 185K |
| 代理商： | OPA688P |
11
OPA688
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 OPA688, 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 OPA688, 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.
LIMITED OUTPUT, ADC INPUT DRIVER
Figure 3 shows a simple ADC driver that operates on single
supply, and gives excellent distortion performance. The
limit voltages track the input range of the converter, com-
pletely protecting against input overdrive.
FIGURE 1. DC-Coupled, Dual Supply Amplifier.
FIGURE 2. AC-Coupled, Single Supply Amplifier.
FIGURE 3. Single Supply, Limiting ADC Input Driver.
OPA688
49.9
6
I
VH
V
O
V
IN
I
VL
–V
S
= –5V
3
2
4
7
8
5
R
F
402
R
G
402
500
0.1μF
0.1μF
0.1μF
174
3.01k
1.91k
3.01k
1.91k
0.1μF
V
H
= +2V
V
L
= –2V
+
2.2μF
+
2.2μF
+V
S
= +5V
OPA688
57.6
6
I
VH
V
H
= 3.7V
V
O
V
L
= 1.3V
V
IN
I
VL
806
3
2
4
7
8
5
806
523
976
523
R
G
402
R
F
402
500
0.1μF
0.1μF
0.1μF
+
2.2μF
0.1μF
V
S
= +5V
0.1μF
0.1μF
OPA688
V
S
= +5V
4
2
3
7
5
8
6
V
S
= +5V
+3.5V
+1.5V
V
IN
REFB
REFT
IN
0.1
μ
F
100pF
V
H
= +3.6V
V
L
= +1.4V
0.1
μ
F
0.1
μ
F
0.1
μ
F
402
24.9
562
102
402
715
715
102
562
ADS822
10-Bit
40MSPS
10-Bit
Data
V
S
= +5V
INT/EXT
RSEL
+V
S
GND
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OPA688U | 制造商:Texas Instruments 功能描述: 制造商: 功能描述: 制造商:undefined 功能描述: |
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| OPA689 | 制造商:BB 制造商全稱:BB 功能描述:Wideband, High Gain VOLTAGE LIMITING AMPLIFIER |
| 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 |
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