参数资料
| 型号： | MAX4289EUT+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 7/9页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP SNGL SOT23-6 |
| 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： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.006 V/µs |
| 增益带宽积： | 17kHz |
| 电流 - 输入偏压： | 5nA |
| 电压 - 输入偏移： | 200µV |
| 电流 - 电源： | 18µA |
| 电流 - 输出 / 通道： | 19mA |
| 电压 - 电源，单路/双路(±)： | 1 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SOT-23-6 |
| 供应商设备封装： | SOT-6 |
| 包装： | 带卷 (TR) |
Power-Up Settling Time
The MAX4289 typically requires 300s to power-up
after VCC is stable. During this startup time, the output
is indeterminate. The application circuit should allow for
this initial delay.
Driving Capacitive Loads
The MAX4289 is unity-gain stable for loads up to
200pF. Applications that require greater capacitive-
drive capability should use an isolation resistor
between the output and the capacitive load (Figure 4).
Note that this solution results in a loss of gain accuracy
because RISO forms a voltage-divider with the load
resistor.
Using the MAX4289 as a Comparator
Although optimized for use as an operational amplifier,
the MAX4289 can also be used as a rail-to-rail I/O com-
parator (Figure 5). External hysteresis can be used to
minimize the risk of output oscillation. The positive feed-
back circuit, shown in Figure 5, causes the input thresh-
old to change when the output voltage changes state.
Power Supplies and Layout
The MAX4289 operates from a single 1V to 5.5V power
supply. Bypass the power with a 0.1F capacitor to
ground.
Good layout techniques optimize performance by
decreasing the amount of stray capacitance at the op
amp’s inputs and outputs. To decrease stray capaci-
tance, minimize trace lengths by placing external com-
ponents close to the op amp’s pins.
MAX4289
1.0V Micropower, SOT23, Operational Amplifier
_______________________________________________________________________________________
7
50
60
70
80
90
POWER-SUPPLY REJECTION RATIO
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
PSRR
(dB)
0.8
1.1
1.2
0.9
1.0
1.3
1.4
1.5
TA = +85
°C
TA = +25
°C
TA = -40
°C
Figure 3. PSRR vs. VCC Over the Temperature Range
RISO
CL
RL
AV =
≈ 1
RL
RL + RISO
MAX4289
Figure 4. Using a Resistor to Isolate a Capacitive Load from
the Op Amp
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相关代理商/技术参数 |
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| MAX428ACPA-2 | 功能描述:运算放大器 - 运放 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 |
| MAX428ACSA | 功能描述:运算放大器 - 运放 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 |
| MAX428ACSA-T | 功能描述:运算放大器 - 运放 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 |
| MAX428CPA | 功能描述:运算放大器 - 运放 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 |
| MAX428CPA-2 | 制造商:Maxim Integrated Products 功能描述:DUAL HIGH-SPEED, HIGH OUTPUT CURRENT OP AMP - Bulk |
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