参数资料
| 型号： | MAX4249EUB+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP R-R LN 10-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 2 |
| 输出类型： | 推挽式，满摆幅 |
| 转换速率： | 2.1 V/µs |
| 增益带宽积： | 22MHz |
| 电流 - 输入偏压： | 1pA |
| 电压 - 输入偏移： | 70µV |
| 电流 - 电源： | 420µA |
| 电流 - 输出 / 通道： | 68mA |
| 电压 - 电源，单路/双路(±)： | 2.4 V ~ 5.5 V，±1.2 V ~ 2.75 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-µMAX |
| 包装： | 带卷 (TR) |
UCSP, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
12
Maxim Integrated
MAX4249–MAX4257
These devices maintain stability while driving loads up
to 400pF. To drive higher capacitive loads, place a
small isolation resistor in series between the output of
the amplifier and the capacitive load (Figure 5). This
resistor improves the amplifier’s phase margin by iso-
lating the capacitor from the op amp’s output.
Reference Figure 6 to select a resistance value that will
ensure a load capacitance that limits peaking to <2dB
(25%). For example, if the capacitive load is 1000pF,
the corresponding isolation resistor is 150". Figure 7
shows that peaking occurs without the isolation resis-
tor. Figure 8 shows the unity-gain bandwidth vs. capac-
itive load for the MAX4250–MAX4254.
Power Supplies and Layout
The MAX4249–MAX4257 operate from a single 2.4V to
5.5V power supply or from dual supplies of ±1.20V to
±2.75V. For single-supply operation, bypass the power
supply with a 0.1F ceramic capacitor placed close to
the VDD pin. If operating from dual supplies, bypass
each supply to ground.
Good layout improves performance by decreasing the
amount of stray capacitance and noise at the op amp’s
inputs and output. To decrease stray capacitance, min-
imize PC board trace lengths and resistor leads, and
place external components close to the op amp’s pins.
160
140
0
10
10,000
60
20
40
120
100
80
CAPACITIVE LOADING (pF)
1000
100
SHADED AREA INDICATES
STABLE OPERATION
WITH NO NEED FOR
ISOLATION RESISTOR.
NOTE: USING AN ISOLATION RESISTOR REDUCES PEAKING.
R ISO
(Ω
)
4.5
3.5
4.0
0
10
10,000
2.0
3.0
2.5
1.0
0.5
1.5
CAPACITIVE LOAD (pF)
UNITY-GAIN
BANDWIDTH
(MHz)
1000
100
VDD = 3V
SHADED AREA INDICATES
STABLE OPERATION
WITH NO NEED FOR
ISOLATION RESISTOR.
NOTE: RISO CHOSEN FOR PEAKING <2dB.
25
20
0
10
10,000
15
5
10
CAPACITIVE LOAD (pF)
PEAKING
(dB)
1000
100
MAX4250–MAX4254 (AV = 1)
MAX4249/MAX4255–MAX4257 (AV = 10)
RISO = 0
SHADED AREA INDICATES
STABLE OPERATION
WITH NO NEED FOR
ISOLATION RESISTOR.
Figure 6. Isolation Resistance vs. Capacitive Loading to
Minimize Peaking (<2dB)
Figure 7. Peaking vs. Capacitive Load
Figure 8. MAX4250–MAX4254 Unity-Gain Bandwidth vs.
Capacitive Load
相关PDF资料 |
PDF描述 |
|---|---|
| MAX4249ESD+T | IC OP AMP R-R LN 14-SOIC |
| 5VTP 3.15-R | FUSE 3.15A 250V TLAG IEC 5X20MM |
| N3440-D302RB | CONN HEADER STKD 30POS R/A LO |
| 81068-660C01-RB-WG | CONN HEADER 68POS STR LONG SMD |
| 81060-500203 | CONN HEADER 60POS R/A THRU HO |
相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4250AAUK | 制造商:Maxim Integrated Products 功能描述:LOW-NOISE/DISTORTION SINGLE-SUPPLY - Cut Tape Product |
| MAX4250AAUK+ | 制造商:Maxim Integrated Products 功能描述:OP AMP SGL GP R-R O/P 2.75V/5.5V 5PIN SOT-23 - Rail/Tube 制造商:Rochester Electronics LLC 功能描述: |
| MAX4250AAUK+T | 功能描述:运算放大器 - 运放 Low-Distortion Rail-Rail Op Amp RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| MAX4250AAUK-T | 功能描述:运算放大器 - 运放 Low-Distortion Rail-Rail Op Amp RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
| MAX4250EUK | 制造商:Maxim Integrated Products 功能描述:NON BOOK, NEED Q# AND NC/NR ( MARKED ACCI ) - Bulk 制造商:Maxim Integrated Products 功能描述:OP AMP LOW NOISE RRO/P SMD 4250 |
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