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參數(shù)資料
| 型號： | MAX4419EUD+T |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 8/22頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP QUAD 3V/5V R-R 14-TSSOP |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 2,500 |
| 放大器類型： | 電壓反饋 |
| 電路數(shù)： | 4 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 470 V/µs |
| -3db帶寬： | 150MHz |
| 電流 - 輸入偏壓： | 1.3µA |
| 電壓 - 輸入偏移： | 500µV |
| 電流 - 電源： | 1.6mA |
| 電流 - 輸出 / 通道： | 75mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 14-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-TSSOP |
| 包裝： | 帶卷 (TR) |
MAX4414–MAX4419
Low-Power, +3V/+5V, 400MHz Single-Supply
Op Amps with Rail-to-Rail Outputs
16
______________________________________________________________________________________
Coaxial cable and other transmission lines are easily
driven when properly terminated at both ends with their
characteristic impedance. Driving back-terminated
transmission lines essentially eliminates the line’s
capacitance.
___________Applications Information
Choosing Resistor Values
Unity-Gain Configuration
The MAX4414/MAX4416/MAX4418 are internally com-
pensated for unity gain. When configured for unity gain,
the devices require a 24
feedback resistor (RF). This
resistor improves AC response by reducing the Q of the
parallel LC circuit formed by the parasitic feedback
capacitance and inductance.
Inverting and Noninverting Configurations
Select the gain-setting feedback (RF) and input (RG)
resistor values that best fit the application. Large resis-
tor values increase voltage noise and interact with the
amplifier’s input and PC board capacitance. This can
generate undesirable poles and zeros and decrease
bandwidth or cause oscillations. For example, a nonin-
verting gain-of-two configuration (RF = RG) using 1k
resistors, combined with 1.8pF of amplifier input capac-
itance and 1pF of PC board capacitance, causes a
pole at 114MHz. Since this pole is within the amplifier
bandwidth, it jeopardizes stability. Reducing the 1k
resistors to 100
extends the pole frequency to
1.14GHz, but could limit output swing by adding 200
in parallel with the amplifier’s load resistor.
Note: For high gain applications where output offset
voltage is a consideration, choose RS to be equal to the
parallel combination of RF and RG (Figures 3a and 3b):
R
RR
S
FG
=
×
+
VOUT
VOUT = [1+ (RF / RG)] VIN
IN
RF
R0
RS
RG
Figure 3a. Noninverting Gain Configuration
VOUT
IN
RS
RF
RO
RG
VOUT = (RF / RG) VIN
Figure 3b. Inverting Gain Configuration
VOUT
VIN
RBIN
RISO
RF
CL
RG
Figure 1. Driving a Capacitive Load Through an Isolation
Resistor
Figure 2. Capacitive Load vs. Isolation Resistance
10
16
14
12
18
20
22
24
26
28
30
0
400
200
600
800
1000
CLOAD (pF)
R
ISO
(
)
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