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參數(shù)資料
| 型號(hào)： | MAX4212EUK |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 音頻／視頻放大 |
| 英文描述： | Miniature, 300MHz, Single-Supply, Rail-to-Rail Op Amps with Enable |
| 中文描述： | 1 CHANNEL, VIDEO AMPLIFIER, PDSO5 |
| 封裝： | SOT-23, 5 PIN |
| 文件頁數(shù)： | 11/16頁 |
| 文件大小： | 288K |
| 代理商： | MAX4212EUK |
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-S ensing Input
The input common-mode range extends from
(V
EE
- 200mV) to (V
CC
- 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 50mV of either power-
supply rail with a 10k
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 (I
IL
) is small.
However, as the EN voltage (V
IL
) approaches the nega-
tive supply rail, I
IL
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 V
IL
as the logic
input is brought to V
EE
. Figure 4 shows the resulting
input current (I
IL
).
When the MAX4213/MAX4218 are disabled, the amplifi-
er’s output impedance is 35k
. This high resistance
and the low 2pF output capacitance make these parts
ideal in RF/video multiplexer or switch applications. For
larger arrays, pay careful attention to capacitive load-
ing. See the Output Capacitive Loading and Stability
section for more information.
M
Miniature, 300MHz, S ingle-S upply,
Rail-to-Rail Op Amps with Enable
______________________________________________________________________________________
11
Table 1. Recommended Component Values
Note:
R
L
= R
O
+ R
TO
; R
TIN
and R
TO
are calculated for 50
applications. For 75
systems, R
TO
= 75
; calculate R
TIN
from the
following equation:
75
1-75
R
G
R
=
TIN
-25
+25
-10
+10
-5
+5
-2
+2
-1
+1
49.9
10
∞
0
50
1200
GAIN (V/V)
49.9
6
49.9
—
20
500
49.9
25
∞
0
50
500
49.9
11
49.9
—
56
500
49.9
33
100
0
100
500
49.9
25
49.9
—
124
500
49.9
60
62
0
250
500
49.9
105
49.9
—
500
500
49.9
49.9
R
TO
(
)
90
300
Small-Signal -3dB Bandwidth (MHz)
56
49.9
R
TIN
(
)
0
—
R
S
(
)
COMPONENT
500
∞
R
G
(
)
500
24
R
F
(
)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4212EUK+ | 制造商:Maxim Integrated Products 功能描述:OP AMP SGL VOLT FDBK R-R O/P 5.5V/11V 5PIN SOT-23 - Rail/Tube 制造商:Maxim Integrated Products 功能描述:RAIL-TO-RAIL OP AMPS WITH ENABLE |
| MAX4212EUK+T | 功能描述:高速運(yùn)算放大器 Miniature 300MHz Single-Supply R-R RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4212EUK+T | 制造商:Maxim Integrated Products 功能描述:IC OP-AMP ((NW)) |
| MAX4212EUK+T | 制造商:Maxim Integrated Products 功能描述:OP AMP 300MHZ RRO/P SMD 4212 |
| MAX4212EUK-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 |
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