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參數(shù)資料
| 型號： | MAX4040ESA+ |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC OP AMP R-R SNGL 8-SOIC |
| 產(chǎn)品培訓(xùn)模塊： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 標(biāo)準(zhǔn)包裝： | 100 |
| 放大器類型： | 通用 |
| 電路數(shù)： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)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(±)： | 2.4 V ~ 5.5 V，±1.2 V ~ 2.75 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(yīng)商設(shè)備封裝： | 8-SOIC |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 1387 (CN2011-ZH PDF) |
MAX4040–MAX4044
Single/Dual/Quad, Low-Cost, SOT23,
Micropower, Rail-to-Rail I/O Op Amps
______________________________________________________________________________________
11
For example, a MAX4040 running from a single +2.4V
supply, operating at TA = +25°C, can source 240A to
within 100mV of VCC and is capable of driving a 9.6k
load resistor to VEE:
The same application can drive a 4.6k
load resistor
when terminated in VCC / 2 (+1.2V in this case).
Driving Capacitive Loads
The MAX4040–MAX4044 are unity-gain stable for loads
up to 200pF (see Load Resistor vs. Capacitive Load
graph
in
Typical
Operating
Characteristics).
Applications that require greater capacitive drive capa-
bility should use an isolation resistor between the output
and the capacitive load (Figures 6a–6c). Note that this
alternative results in a loss of gain accuracy because
RISO forms a voltage divider with the load resistor.
Power-Supply Bypassing and Layout
The MAX4040–MAX4044 family operates from either a
single +2.4V to +5.5V supply or dual ±1.2V to ±2.75V
supplies. For single-supply operation, bypass the
power supply with a 100nF capacitor to VEE (in this
case GND). For dual-supply operation, both the VCC
and VEE supplies should be bypassed to ground with
separate 100nF capacitors.
Good PC board layout techniques optimize perfor-
mance by decreasing the amount of stray capacitance
at the op amp’s inputs and output. To decrease stray
capacitance, minimize trace lengths by placing exter-
nal components as close as possible to the op amp.
Surface-mount components are an excellent choice.
Using the MAX4040–MAX4044
as Comparators
Although optimized for use as operational amplifiers,
the MAX4040–MAX4044 can also be used as rail-to-rail
I/O comparators. Typical propagation delay depends
on the input overdrive voltage, as shown in Figure 7.
External hysteresis can be used to minimize the risk of
output oscillation. The positive feedback circuit, shown
in Figure 8, causes the input threshold to change when
the output voltage changes state. The two thresholds
create a hysteresis band that can be calculated by the
following equations:
VHYST = VHI - VLO
VLO = VIN x R2 / (R1 + (R1 x R2 / RHYST) + R2)
VHI = [(R2 / R1 x VIN) + (R2 / RHYST) x VCC] /
(1 + R1 / R2 + R2 / RHYST)
R
=
2.4V - 0.1V
240 A
9.6k
to V
LEE
=
50mV/div
IN
OUT
50mV/div
MAX4040/42/44 fig06b
100
s/div
RISO = NONE, RL = 100k
, CL = 700pF
Figure 6b. Pulse Response without Isolating Resistor
50mV/div
IN
OUT
50mV/div
MAX4040/42/44 fig06c
100
s/div
RISO = 1k
, RL = 100k, CL = 700pF
Figure 6c. Pulse Response with Isolating Resistor
RISO
CL
RL
MAX4040–
MAX4044
AV =
RL
≈ 1
RL + RISO
Figure 6a. Using a Resistor to Isolate a Capacitive Load from
the Op Amp
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參數(shù)描述 |
|---|---|
| MAX4040ESA+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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 |
| MAX4040ESA+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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 |
| MAX4040ESA-T | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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 |
| MAX4040EUA | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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 |
| MAX4040EUA+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 uPower Rail-Rail 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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