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參數(shù)資料
| 型號： | MAX4108 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 400MHz, Ultra-Low-Distortion Op Amps |
| 中文描述： | 400MHz、超低失真運(yùn)算放大器 |
| 文件頁數(shù)： | 9/12頁 |
| 文件大?。?/td> | 177K |
| 代理商： | MAX4108 |
M
400MHz, Ultra-Low-Distortion Op Amps
_______________________________________________________________________________________
9
_______________Detailed Desc ription
Choosing Resistor V alues
Unity-Gain Configuration
The MAX4108 is internally compensated for unity gain.
When configured for unity gain, the device requires a
small resistor in series with the feedback path. This
resistor improves the AC response by reducing the Q
of the tank circuit, which is formed by parasitic feed-
back inductance and capacitance.
Inverting and Noninverting Configurations
The values of the gain-setting feedback and input resis-
tors are important design considerations. Large resistor
values will increase voltage noise, and will interact with
the amplifier’s input and PC board capacitance to gen-
erate undesirable poles and zeros, which can decrease
bandwidth or cause oscillations. For example, a nonin-
verting gain of +2, using 1k
resistors combined with
2pF of input capacitance and 0.5pF of board capaci-
tance, will cause a feedback pole at 128MHz. If this
pole is within the anticipated amplifier bandwidth, it will
jeopardize stability. Reducing these 1k
resistors to
100
will extend the pole frequency to 1.28GHz, but
could limit output swing by adding 200
in parallel with
the amplifier’s load. Clearly, the selection of resistor val-
ues must be tailored to the specific application.
The MAX4108/MAX4109/MAX4308/MAX4309 are ultra-
low-distortion, high-bandwidth op amps. The output
distortion will be degraded as the total load resistance
seen by the amplifier decreases. To minimize distortion
products, keep the input and gain-setting resistors rela-
tively large. A 500
feedback resistor combined with
an appropriate input resistor to set the gain will provide
excellent AC performance without significantly increas-
ing distortion.
_____________________Pin Desc ription
PIN
1
2
3
4, 5
6
7, 8
NAME
N.C.
IN-
IN+
V
EE
OUT
V
CC
FUNCTION
No Connection. Not internally connected.
Inverting Input
Noninverting Input
Negative Power Supply, connect to -5V
DC
.
Amplifier Output
Positive Power Supply, connect to +5V
DC
.
R
F
R
G
R
S
C
L
V
IN
PART
MAX4108
MAX4109
MAX4308
MAX4309
R
F
(
)
24
500
500
500
R
G
(
)
∞
500
125
56
GAIN (V/V)
1
2
5
10
R
L
Figure 1a. Using an Isolation Resistor for High Capacitive
Loads
0
M
I
)
20
25
15
10
5
190
10
40
70
100
130
160
220
CAPACITANCE (pF)
MAX4109/MAX4309
MAX4108
MAX4308
Figure 1b. Optimal Isolation Resistor (R
S
) vs. Capacitive Load
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4108ESA | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4108ESA+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4108ESA+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4108ESA-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比（最小值）:63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流（最大值）:10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4108EVKIT | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Voltage-Output.12-Bit Multiplying DACs[MAX501/MAX502/MAX501/MAX502/MAX501/MAX502/MAX501ACNG/MAX501ACWG/MAX501ACWG-T/MAX501AENG/MAX501AEWG/MAX501AEWG-T/MAX501AMRG/MAX501BC/D/MAX501BCNG/MAX501BCWG/MAX501BCWG-T/MAX501BENG/MAX501BEWG/MAX501BEWG-T/MAX502ACNG/MAX502ACWG/MAX502ACWG-T/MAX502AENG/MAX502AEWG/MAX502AEWG-T/MAX502AMRG/MAX502BC/D/MAX502BCNG/MAX502BCWG/MAX502BCWG-T/MAX502BENG/MAX502BEWG/MAX502BEWG-T/MAX502BMRG] |
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