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參數(shù)資料
| 型號(hào)： | OP471EY |
| 廠商： | PRECISION MONOLITHICS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | High Speed, Low Noise Quad Operational Amplifier |
| 中文描述： | QUAD OP-AMP, 1100 uV OFFSET-MAX, 6.5 MHz BAND WIDTH, CDIP14 |
| 封裝： | HERMETIC SEALED, DIP-14 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大?。?/td> | 314K |
| 代理商： | OP471EY |
REV. A
OP471
–12–
Quad Programmable Gain Amplifier
The combination of the quad OP471 and the DAC8408, a quad
8-bit CMOS DAC, creates a space-saving quad programmable gain
amplifier. The digital code present at the DAC, which is easily
set by a microprocessor, determines the ratio between the fixed
DAC feedback resistor and the impedance the DAC ladder presents
to the op amp feedback loop. Gain of each amplifier is:
V
V
IN
= –256
n
OUT
where n equals the decimal equivalent of the 8-bit digital code
present at the DAC. If the digital code present at the DAC
consists of all zeros, the feedback loop will be open causing the
op amp output to saturate. The 20 M
W
resistors placed in parallel
with the DAC feedback loop eliminates this problem with a very
small reduction in gain accuracy.
1/4
OP470E
+15V
–15V
V
OUT
A
I
OUT1A
DAC A
V
REF
I
OUT2A/2B
R
FB
A
DGND
V
DD
DAC-8408ET
V
IN
A
DAC DATA BUS
PINS 9 (LSB) – 16 (MSB)
R1
20M
1/4
OP470E
V
OUT
B
I
OUT1B
DAC B
V
REF
R
FB
B
V
IN
B
R2
20M
1/4
OP470E
V
OUT
C
I
OUT1C
DAC C
V
REF
R
FB
C
V
IN
C
R3
20M
1/4
OP470E
V
OUT
D
I
OUT1D
V
REF
R
FB
D
V
IN
D
R4
20M
DAC D
I
OUT2C/2D
A
B
C
D
Figure 17. Quad Programmable Gain Amplifier
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| OP471 | High Speed, Low Noise Quad Operational Amplifier |
| OP471FY | High Speed, Low Noise Quad Operational Amplifier |
| OP471GP | High Speed, Low Noise Quad Operational Amplifier |
| OP471GS | High Speed, Low Noise Quad Operational Amplifier |
| P-DSO-20 | integrated modulator-mixer for transmit path |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| OP-471EY | 制造商:AD 制造商全稱:Analog Devices 功能描述:HIGH SPEED, LOW NOISE QUAD OPERATIONAL AMPLIFIER |
| OP471FY | 制造商: 功能描述: 制造商:undefined 功能描述: |
| OP-471FY | 制造商:AD 制造商全稱:Analog Devices 功能描述:HIGH SPEED, LOW NOISE QUAD OPERATIONAL AMPLIFIER |
| OP471GP | 制造商:Analog Devices 功能描述:OP AMP QUAD LOW NOISE DIP14 471 |
| OP-471GP | 制造商:AD 制造商全稱:Analog Devices 功能描述:HIGH SPEED, LOW NOISE QUAD OPERATIONAL AMPLIFIER |
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