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參數(shù)資料
| 型號： | MAX4231EVKIT+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 2/15頁 |
| 文件大?。?/td> | 0K |
| 描述： | KIT EVALUATION FOR MAX4231 |
| 其它有關(guān)文件： | Automotive Product Guide |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 每 IC 通道數(shù)： | 1 - 單 |
| 放大器類型： | 通用 |
| 輸出類型： | 單端，滿擺幅 |
| 轉(zhuǎn)換速率： | 10 V/µs |
| 電流 - 輸出 / 通道： | 200mA |
| 工作溫度： | -40°C ~ 125°C |
| 電流供應(yīng)（主 IC）： | 1.2mA |
| 電壓 - 電源，單路/雙路(±)： | 2.7 V ~ 5.5 V |
| 板類型： | 完全填充 |
| 已供物品： | 板 |
| 已用 IC / 零件： | MAX4231 |
Choose gain-setting resistors RIN and RF according to
the amount of desired gain, keeping in mind the maximum
output amplitude. The output coupling capacitor, COUT,
blocks the DC component of the amplifier output, prevent-
ing DC current flowing to the load. The output capacitor
and the load impedance form a highpass filer with the
-3dB point determined by:
3dB
IN OUT
1
f
2R C
=
π
For a 32Ω load, a 100μF aluminum electrolytic capacitor
gives a low-frequency pole at 50Hz.
Bridge Amplifier
The circuit shown in Figure 3 uses a dual MAX4230 to
implement a 3V, 200mW amplifier suitable for use in size-
constrained applications. This configuration eliminates
the need for the large coupling capacitor required by the
single op-amp speaker driver when single-supply opera-
tion is necessary. Voltage gain is set to 10V/V; however,
it can be changed by adjusting the 82kΩ resistor value.
Rail-to-Rail Input Stage
The MAX4230–MAX4234 CMOS op amps have parallel
connected n- and p-channel differential input stages that
combine to accept a common-mode range extending
to both supply rails. The n-channel stage is active for
common-mode input voltages typically greater than (VSS
+ 1.2V), and the p-channel stage is active for common-
mode input voltages typically less than (VDD -1.2V).
Rail-to-Rail Output Stage
The minimum output is within millivolts of ground for
single-supply operation, where the load is referenced to
and the output voltage swing of a MAX4230 connected
as a voltage follower. The maximum output voltage swing
is load dependent; however, it is guaranteed to be within
500mV of the positive rail (VDD = 2.7V) even with maxi-
mum load (32Ω to ground).
Observe the Absolute Maximum Ratings for power dis-
sipation and output short-circuit duration (10s, max)
because the output current can exceed 200mA (see the
Input Capacitance
One consequence of the parallel-connected differential
input stages for rail-to-rail operation is a relatively large
input capacitance CIN (5pF typ). This introduces a pole
at frequency (2πR′CIN)-1, where R′ is the parallel com-
bination of the gain-setting resistors for the inverting or
noninverting amplifier configuration (Figure 5). If the pole
frequency is less than or comparable to the unity-gain
bandwidth (10MHz), the phase margin is reduced, and
the amplifier exhibits degraded AC performance through
either ringing in the step response or sustained oscilla-
tions. The pole frequency is 10MHz when R′ = 2kΩ. To
maximize stability, R′ << 2kΩ is recommended.
Figure 3. Dual MAX4230/MAX4231 Bridge Amplifier for 200mW
at 3V
Figure 4. Rail-to-Rail Input/Output Range
1
6
7
5
2
8
3V
3
4
1/2
MAX4232
1/2
MAX4232
0.5VP-P
R5
51k
R1
16k
R2
82k
R4
10k
32W
fS = 100Hz
R3
10k
R6
51k
C2
0.1F
C1
0.1mF
IN
1V/div
OUT
1V/div
5s/div
VCC = 3.0V
RL = 100k
MAX4230–MAX4234
High-Output-Drive, 10MHz, 10V/μs,
Rail-to-Rail I/O Op Amps with Shutdown in SC70
www.maximintegrated.com
Maxim Integrated │ 10
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4231EVKIT+ | 功能描述:放大器 IC 開發(fā)工具 10MHz 10V/us Rail-Rail I/O RoHS:否 制造商:International Rectifier 產(chǎn)品:Demonstration Boards 類型:Power Amplifiers 工具用于評估:IR4302 工作電源電壓:13 V to 23 V |
| MAX4232AKA | 制造商:Maxim Integrated Products 功能描述:HIGH-OUTPUT DRIVE 10MHZ 10V/US R - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX4232AKA+ | 制造商:Maxim Integrated Products 功能描述:HIGH-OUTPUT-DRIVE, 10MHZ, 10V/?1?S, RAIL-T 制造商:Maxim Integrated Products 功能描述:OP AMP DUAL GP R-R I/O 2.5V/5.5V 8PIN SOT-23 - Rail/Tube |
| MAX4232AKA+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 10MHz 10V/us Rail-Rail I/O 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 |
| MAX4232AKA+TC2F | 功能描述:運(yùn)算放大器 - 運(yùn)放 10MHz 10V/us Rail-Rail I/O 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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