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參數(shù)資料
| 型號： | MAX4241ESA |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OPAMP 1.8V BEYOND/RAIL 8-SOIC |
| 產(chǎn)品培訓模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標準包裝： | 100 |
| 系列： | Beyond-the-Rails™ |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉換速率： | 0.04 V/µs |
| 增益帶寬積： | 90kHz |
| 電流 - 輸入偏壓： | 2nA |
| 電壓 - 輸入偏移： | 200µV |
| 電流 - 電源： | 14µA |
| 電流 - 輸出 / 通道： | 2.5mA |
| 電壓 - 電源，單路/雙路(±)： | 1.8 V ~ 5.5 V，±0.9 V ~ 2.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-SOIC（0.154"，3.90mm 寬） |
| 供應商設備封裝： | 8-SOIC |
| 包裝： | 管件 |
Single/Dual/Quad, +1.8V/10A, SOT23,
Beyond-the-Rails Op Amps
RL = 100kΩ TIED TO VEE
VIN = 2.0V
fIN = 1kHz
IN
In the region where the differential input voltage
MAX4240-44 fig03
approaches 1.8V, the input resistance decreases expo-
nentially from 45M
Ω to 4.4kΩ as the diode block begins
conducting. Conversely, the bias current increases with
the same curve.
1V/div
200
s/div
Figure 3. Rail-to-Rail Input/Output Voltage Range
MAX4240–MAX424
4
OUT
Rail-to-Rail Output Stage
The MAX4240–MAX4244 output stage can drive up to a
10k
Ω load and still swing to within 40mV of the rails.
Figure 3 shows the output voltage swing of a MAX4240
configured as a unity-gain buffer, powered from a single
+2V supply voltage. The output for this setup typically
swings from (VEE + 6mV) to (VCC - 8mV) with a 100kΩ
load.
__________Applications Information
Power-Supply Considerations
The MAX4240–MAX4244 operate from a single +1.8V
to +5.5V supply (or dual ±0.9V to ±2.75V supplies) and
100
consume only 10A of supply current per amplifier. A
high power-supply rejection ratio of 85dB allows the
amplifiers to be powered directly off a decaying battery
90
voltage, simplifying design and extending battery life.
The MAX4240–MAX4244 are ideally suited for use with
most battery-powered systems. Table 1 lists a variety of
typical battery types showing voltage when fresh, volt-
age at end-of-life, capacity, and approximate operating
time from a MAX4240/MAX4241, assuming nominal
conditions for both normal and shutdown modes.
PSRR
(dB)
80
70
TA = +85°C
TA = -40°C
TA = +25°C
MAX4240-44
fig04
Although the amplifiers are fully guaranteed over tem-
60
perature for operation down to a +1.8V single supply,
1.0
1.2
1.4
1.6
1.8
2.0
even lower-voltage operation is possible in practice.
SUPPLY VOLTAGE (V)
Figures 4 and 5 show the PSRR and supply current as
a function of supply voltage and temperature.
Figure 4. Power-Supply Rejection Ratio vs. Supply Voltage
Power-Up Settling Time
The MAX4240–MAX4244 typically require 200s to
12
power up after VCC is stable. During this start-up time,
the output is indeterminant. The application circuit
10
TA = +85°C
TA = +25°C
TA = -40°C
MAX4240-44
fig05
should allow for this initial delay.
Shutdown Mode
The MAX4241 (single) and MAX4243 (dual) feature a
low-power shutdown mode. When the shutdown pin
(SHDN) is pulled low, the supply current drops to 1A
per amplifier, the amplifier is disabled, and the outputs
enter a high-impedance state. Pulling SHDN high or
SUPPLY
CURRENT
(
A)
8
6
4
leaving it floating enables the amplifier. Take care to
ensure that parasitic leakage current at the SHDN pin
does not inadvertently place the part into shutdown
2
0
1.0
1.2
1.4
1.6
1.8
2.0
mode when SHDN is left floating. Figure 6 shows the
SUPPLY VOLTAGE (V)
output voltage response to a shutdown pulse. The logic
threshold for SHDN is always referred to VCC / 2 (not to
Figure 5. Supply Current vs. Supply Voltage
______________________________________________________________________________________
11
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相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4241ESA+ | 功能描述:運算放大器 - 運放 1.8V 10uA Beyond the-Rails 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4241ESA+T | 功能描述:運算放大器 - 運放 1.8V 10uA Beyond the-Rails 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4241ESA-T | 功能描述:運算放大器 - 運放 1.8V 10uA Beyond the-Rails 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4241EUA | 功能描述:運算放大器 - 運放 1.8V 10uA Beyond the-Rails 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
| MAX4241EUA+ | 功能描述:運算放大器 - 運放 1.8V 10uA Beyond the-Rails 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-16 轉換速度:0.89 V/us 關閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel |
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