Datasheet MAX4289 (Analog Devices) - 6
| Fabricante | Analog Devices |
| Descripción | 1.0V Micropower, SOT23, Operational Amplifier |
| Páginas / Página | 9 / 6 — 1.0V Micropower, SOT23, Operational Amplifier. Pin Description. PIN. … |
| Formato / tamaño de archivo | PDF / 287 Kb |
| Idioma del documento | Inglés |
1.0V Micropower, SOT23, Operational Amplifier. Pin Description. PIN. NAME. FUNCTION. SOT23. MAX4289. Detailed Description
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1.0V Micropower, SOT23, Operational Amplifier Pin Description PIN NAME FUNCTION SO SOT23
1, 5, 8 5 N.C. No Connection. Not internally connected. 2 4 IN- Inverting Input 3 3 IN+ Noninverting Input
MAX4289
4 2 GND Ground 6 1 OUT Amplifier Output 7 6 VCC Positive Supply. Bypass with a 0.1µF capacitor to GND.
Detailed Description
The MAX4289 consumes ultra-low power (9µA supply current typically) and has a rail-to-rail output stage that is specifically designed for low-voltage operation. The input common-mode voltage range extends from V IN CC - 500mV/div 0.2V to ground, although full rail-to-rail input range is possible with degraded performance. The input offset voltage is typically 200µV. Low-operating supply volt- age, low supply current, and rail-to-rail outputs make this operational amplifier an excellent choice for preci- sion or general-purpose, low-voltage, battery-powered OUT V 500mV/div systems. IN = 2.0V fIN = 1kHz R
Rail-to-Rail Output Stage
L = 100kΩ The MAX4289 output stage can drive a 5kΩ load and 200µs/div still swing to within 7mV of the rails. Figure 1 shows the output voltage swing of the MAX4289 configured as a unity-gain buffer, powered from a single 2V supply volt- Figure 1. Rail-to-Rail Input/Output Voltage Range age. The output for this setup typically swings from +0.4mV to (VCC - 0.2mV) with a 100kΩ load.
SUPPLY CURRENT Applications Information vs. SUPPLY VOLTAGE
25
Power-Supply Considerations
The MAX4289 operates from a single 1.0V to 5.5V supply 20 and consumes only 9µA of supply current. A high power- µA) TA = +85°C supply rejection ratio of 75dB allows the amplifier to be powered directly off a decaying battery voltage, simplify- 15 TA = +25°C ing design and extending battery life. The MAX4289 is ideally suited for single-cell battery-powered systems. 10 T Figures 2 and 3 show the supply current and PSRR as a A = -40°C SUPPLY CURRENT ( function of supply voltage and temperature. 5 0 0 1 2 3 4 5 6 SUPPLY VOLTAGE (V) Figure 2. ICC vs. VCC Over the Temperature Range
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1, 5, 8 5 N.C. No Connection. Not internally connected. 2 4 IN- Inverting Input 3 3 IN+ Noninverting Input
MAX4289
4 2 GND Ground 6 1 OUT Amplifier Output 7 6 VCC Positive Supply. Bypass with a 0.1µF capacitor to GND.
Detailed Description
The MAX4289 consumes ultra-low power (9µA supply current typically) and has a rail-to-rail output stage that is specifically designed for low-voltage operation. The input common-mode voltage range extends from V IN CC - 500mV/div 0.2V to ground, although full rail-to-rail input range is possible with degraded performance. The input offset voltage is typically 200µV. Low-operating supply volt- age, low supply current, and rail-to-rail outputs make this operational amplifier an excellent choice for preci- sion or general-purpose, low-voltage, battery-powered OUT V 500mV/div systems. IN = 2.0V fIN = 1kHz R
Rail-to-Rail Output Stage
L = 100kΩ The MAX4289 output stage can drive a 5kΩ load and 200µs/div still swing to within 7mV of the rails. Figure 1 shows the output voltage swing of the MAX4289 configured as a unity-gain buffer, powered from a single 2V supply volt- Figure 1. Rail-to-Rail Input/Output Voltage Range age. The output for this setup typically swings from +0.4mV to (VCC - 0.2mV) with a 100kΩ load.
SUPPLY CURRENT Applications Information vs. SUPPLY VOLTAGE
25
Power-Supply Considerations
The MAX4289 operates from a single 1.0V to 5.5V supply 20 and consumes only 9µA of supply current. A high power- µA) TA = +85°C supply rejection ratio of 75dB allows the amplifier to be powered directly off a decaying battery voltage, simplify- 15 TA = +25°C ing design and extending battery life. The MAX4289 is ideally suited for single-cell battery-powered systems. 10 T Figures 2 and 3 show the supply current and PSRR as a A = -40°C SUPPLY CURRENT ( function of supply voltage and temperature. 5 0 0 1 2 3 4 5 6 SUPPLY VOLTAGE (V) Figure 2. ICC vs. VCC Over the Temperature Range
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