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參數(shù)資料
| 型號(hào)： | MAX4254 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | SOT23, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps |
| 中文描述： | UCSP封裝、單電源、低噪聲、低失真、滿擺幅運(yùn)算放大器 |
| 文件頁(yè)數(shù)： | 8/16頁(yè) |
| 文件大?。?/td> | 238K |
| 代理商： | MAX4254 |
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_______________Detailed Desc ription
The MAX4249–MAX4257 single-supply operational
amplifiers feature ultra-low noise and distortion while
consuming very little power. Their low distortion and
low noise make them ideal for use as preamplifiers in
wide dynamic-range applications, such as 16-bit ana-
log-to-digital converters (see Typical Operating Circuit.
Their high input impedance and low noise are also use-
ful for signal conditioning of high-impedance sources,
such as piezoelectric transducers.
These devices have true rail-to-rail output operation,
drive loads as low as 1k
while maintaining DC accura-
cy, and can drive capacitive loads up to 400pF without
oscillation. The input common-mode voltage range
extends from V
DD
- 1.1V to 200mV beyond the negative
rail. The push/pull output stage maintains excellent DC
characteristics, while delivering up to ±5mA of current.
The MAX4250–MAX4254 are unity-gain stable, whereas
the MAX4249/MAX4255/MAX4256/MAX4257 have a
higher slew rate and are stable for gains
≥
10V/V. The
MAX4249/ MAX4251/MAX4253/MAX4256 feature a low-
power shutdown mode, which reduces the supply cur-
rent to 0.5μA and disables the outputs.
Low Distortion
Many factors can affect the noise and distortion that the
device contributes to the input signal. The following
guidelines offer valuable information on the impact of
design choices on Total Harmonic Distortion (THD).
Choosing proper feedback and gain resistor values for
a particular application can be a very important factor
in reducing THD. In general, the smaller the closed-
loop gain, the smaller the THD generated, especially
when driving heavy resistive loads. Large-value feed-
back resistors can significantly improve distortion. The
THD of the part normally increases at approximately
20dB per decade, as a function of frequency.
Operating the device near or above the full-power
bandwidth significantly degrades distortion.
Referencing the load to either supply also improves the
part’s distortion performance, because only one of the
MOSFETs of the push/pull output stage drives the out-
put. Referencing the load to mid-supply increases the
part’s distortion for a given load and feedback setting.
(See the Total Harmonic Distortion vs. Frequency graph
in the Typical Operating Characteristics.)
M
S OT 23, S ingle-S upply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
8
_______________________________________________________________________________________
Pin Desc ription
Amplifier Output
6
1
1, 9
1, 7
1, 7, 8, 14
1, 13
OUT, OUTA,
OUTB, OUTC,
OUTD
3, 7
3, 5
3, 5, 10, 12
3, 11
IN+, INA+, INB+,
INC+, IND+
Noninverting Amplifier Input
3
3
4
4
11
4
V
SS
Negative Supply. Connect
to ground for single-supply
operation.
4
2
2, 8
2, 6
2, 6, 9, 13
2, 12
IN-, INA-, INB-,
INC-, IND-
5, 6
—
—
6, 9
SHDN,
SHDNA,
SHDNB
Shutdown Input. Connect to
V
DD
or leave unconnected for
normal operation (amplifier(s)
enabled).
8
—
10
8
Inverting Amplifier Input
2
4
4
14
V
DD
Positive Supply
7
5
—
—
—
5, 7, 8, 10
N.C.
No Connection. Not internally
connected.
1, 5
—
PIN
MAX4249/MAX4253
MAX4252
MAX4257
10 μMAX
14 SO
MAX4254
MAX4250
MAX4255
MAX4251
MAX4256
14 SO
8 μMAX/SO
5 SOT23
NAME
FUNCTION
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4255 | SOT23, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps |
| MAX4256 | SOT23, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps |
| MAX4257 | SOT23, Single-Supply, Low-Noise, Low-Distortion, Rail-to-Rail Op Amps |
| MAX4249 | Differential Bus Transceivers 8-SOIC -40 to 125 |
| MAX4249ESD | Differential Bus Transceivers 8-SOIC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4254ESD | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low-Distortion Rail-Rail Op Amp 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 |
| MAX4254ESD+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low-Distortion Rail-Rail Op Amp 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 |
| MAX4254ESD+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low-Distortion Rail-Rail Op Amp 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 |
| MAX4254ESD-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 Low-Distortion Rail-Rail Op Amp 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 |
| MAX4255EUK | 制造商:Maxim Integrated Products 功能描述:LOW-NOISE/DISTORTION SINGLE-SUPPLY - Rail/Tube |
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