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參數(shù)資料
| 型號(hào)： | MAX4012EUK+T |
| 廠商： | Maxim Integrated Products |
| 文件頁(yè)數(shù)： | 3/17頁(yè) |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP GP R-R 200MHZ SOT23-5 |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 放大器類型： | 電壓反饋 |
| 電路數(shù)： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 600 V/µs |
| -3db帶寬： | 200MHz |
| 電流 - 輸入偏壓： | 5.4µA |
| 電壓 - 輸入偏移： | 4000µV |
| 電流 - 電源： | 5.5mA |
| 電流 - 輸出 / 通道： | 120mA |
| 電壓 - 電源，單路/雙路(±)： | 3.15 V ~ 11 V，±1.575 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | SC-74A，SOT-753 |
| 供應(yīng)商設(shè)備封裝： | SOT-23-5 |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱： | MAX4012EUK+TDKR |
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Maxim recommends using microstrip and stripline tech-
niques to obtain full bandwidth. To ensure that the PC
board does not degrade the amplifier’s performance,
design it for a frequency greater than 1GHz. Pay care-
ful attention to inputs and outputs to avoid large para-
sitic capacitance. Whether or not you use a constant-
impedance board, observe the following guidelines
when designing the board:
Don’t use wire-wrap boards because they are too
inductive.
Don’t use IC sockets because they increase parasitic
capacitance and inductance.
Use surface-mount instead of through-hole compo-
nents for better high-frequency performance.
Use a PC board with at least two layers; it should be
as free from voids as possible.
Keep signal lines as short and as straight as possi-
ble. Do not make 90° turns; round all corners.
Rail-to-Rail Outputs,
Ground-Sensing Input
The input common-mode range extends from
(VEE - 200mV) to (VCC - 2.25V) with excellent common-
mode rejection. Beyond this range, the amplifier output
is a nonlinear function of the input, but does not under-
go phase reversal or latchup.
The output swings to within 60mV of either power-
supply rail with a 2k
load. The input ground-sensing
and the rail-to-rail output substantially increase the
dynamic range. With a symmetric input in a single 5V
application, the input can swing 2.95VP-P, and the out-
put can swing 4.9VP-P with minimal distortion.
Enable Input and Disabled Output
The enable feature (EN_) allows the amplifier to be
placed in a low-power, high-output-impedance state.
Typically, the EN_ logic low input current (IIL) is small.
However, as the EN voltage (VIL) approaches the nega-
tive supply rail, IIL increases (Figure 2). A single resis-
tor connected as shown in Figure 3 prevents the rise in
the logic-low input current. This resistor provides a
feedback mechanism that increases VIL as the logic
input is brought to VEE. Figure 4 shows the resulting
input current (IIL).
When the MAX4018 is disabled, the amplifier’s output
impedance is 35k
. This high resistance and the low
2pF output capacitance make this part ideal in
RF/video multiplexer or switch applications. For larger
arrays, pay careful attention to capacitive loading. See
the Output Capacitive Loading and Stability section for
more information.
MAX4012/MAX4016/MAX4018/MAX4020
Low-Cost, High-Speed, Single-Supply
Op Amps with Rail-to-Rail Outputs
______________________________________________________________________________________
11
RF (
)
24
500
RG (
)
∞
500
COMPONENT
RS (
)
—
0
RTIN (
)
49.9
56
Small-Signal -3dB Bandwidth (MHz)
200
90
RTO (
)
49.9
Table 1. Recommended Component Values
Note: RL = RO + RTO; RTIN and RTO are calculated for 50
applications. For 75 systems, RTO = 75; calculate RTIN from the
following equation:
500
—
49.9
105
49.9
500
250
0
62
60
49.9
500
124
—
49.9
25
49.9
500
100
0
100
33
49.9
500
56
—
49.9
11
49.9
500
50
0
∞
25
49.9
500
20
—
49.9
6
49.9
GAIN (V/V)
1200
50
0
∞
10
49.9
+1
-1
+2
-2
+5
-5
+10
-10
+25
-25
R
=
75
1-
75
R
TIN
G
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