You want your analog circuits to work very accurately. The OP400HS Precision Quad Op Amp gives you four amplifiers in one small chip. This device is special because it has very low input offset voltage and drift. That makes it great for reading sensors with high accuracy. You can trust it to keep the gain steady and use little power. It works well even in devices that run on batteries. Here are some ways it helps:
| Benefit | Description |
|---|---|
| Precision Instrumentation | Very low input offset voltage and drift help amplify tiny sensor signals accurately. |
| Multi-Channel Signal Processing | Four separate amplifier stages in one chip are good for small PCB designs. |
| Low-Power Analog Systems | Uses little supply current, so it fits battery-powered devices. |
| Reference and Control Loops | Gives steady gain and low drift for good feedback in control systems. |
When you know its features, pinout, uses, and other options, you can pick the best operational amplifier for your next project.
Key Takeaways
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The OP400HS Precision Quad Op Amp has four amplifiers in one chip. This saves space and helps make better circuits.
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The OP400HS has very low input offset voltage. This means it gives accurate sensor readings. It is great for precision tools.
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This op amp uses little power and works well. It is good for devices that use batteries.
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The OP400HS works in temperatures from -40°C to +85°C. It can work well in many different places.
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When you pick an op amp, think about what your project needs. Look for precision, stability, and power saving to find the best one.
Precision Quad Op Amp Features
Precision and Offset
You want your circuits to be very accurate. The OP400HS is special because it has very low input offset voltage. This helps you get good readings from sensors and other sources. The table below shows how the OP400HS compares to other operational amplifiers:
| Characteristic | OP400HS |
|---|---|
| Input Offset Voltage | 80 µV |
| Common-Mode Rejection Ratio | up to ~135 dB |
| Number of Amplifiers | 4 |
Low offset voltage is important when you need to boost tiny signals. This keeps your signal clear, which is important in medical and industrial devices. The high common-mode rejection ratio helps block noise. Your measurements stay correct. These features help you build systems that work well and are reliable.
Stability and Drift
Your amplifier needs to stay steady over time and with temperature changes. The OP400HS has a slew rate of 0.15 V/µs and a gain bandwidth product of 500 kHz. These help keep your signal strong in changing conditions. The input bias current is only 750 pA, so your circuit does not drift much. The table below gives more details:
| Parameter | Value |
|---|---|
| Slew Rate | 0.15 V/µs |
| Gain Bandwidth Product | 500 kHz |
| Current – Input Bias | 750 pA |
| Voltage – Input Offset | 80 µV |
| Current – Supply | 600 µA (x4 Channels) |
| Operating Temperature | –40°C ~ +85°C |
You can use the OP400HS where temperatures change a lot. Here are some ways the wide temperature range helps:
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The OP400HS works from -40 °C to +85 °C.
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This wide range means it works well in tough places.
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It stays reliable, which is important for control systems.
Your signal stays strong even in hard conditions. These features make the OP400HS good for long-term and industrial use.
Power and Noise
You want your design to use less power and have little noise. The OP400HS uses less than 775 μA for each amplifier. This makes it good for battery-powered devices. It also has a low input offset voltage of less than 150 μV. This keeps your readings correct. The OP400HS has a common-mode rejection ratio over 120 dB and a power supply rejection ratio below 1.8 μV/V. These help block noise and keep your signal clear.
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The OP400HS uses less than 775 μA per amplifier, so it is good for saving power.
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It has a low input offset voltage under 150 μV, so it is very precise.
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With a common-mode rejection ratio over 120 dB and a power supply rejection ratio below 1.8 μV/V, it blocks noise well.
You can trust the OP400HS in sensor circuits, medical tools, and portable devices. These features help your systems last longer and measure better.
Package Options
You need to pick the right package for your board and heat needs. The OP400HS comes in different package types. The table below shows the good and bad points:
| Advantages | Disadvantages |
|---|---|
| Better channel matching because all are on the same chip. | Sharing a chip can cause heat to move between channels. |
| Cheaper than using four single op amps. | Not as tight specs as OP400E/F/G versions. |
| Uses less power for many channels. | Not as fast for high-speed needs. |
| Keeps old designs working with the OP400 family. | Might be hard to find in the future. |
You can choose from several package types:
| Package Type | Description |
|---|---|
| SOIC-14 | Tube, Reel |
| TSSOP-14 | Reel, Tube |
| PDIP14 | Plastic, MS-001AA |
You get better matching and use less power with quad packages. You also save space on your board. You need to think about heat and speed limits when picking a package. These features help you balance cost, performance, and reliability in your design.
Pinout
Pin Configuration
You need to know the pin layout before you start using the OP400HS in your circuit. The OP400HS comes in a standard 14-pin package, just like many other quad op amps. This makes it easy to swap with similar chips if you need to. Here is a table that shows each pin and what it does:
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | OUT A | Output of Amplifier A |
| 2 | INV-INPUT A | Inverting Input of Amplifier A |
| 3 | NON-INV-INPUT A | Non-Inverting Input of Amplifier A |
| 4 | V+ | Positive Power Supply |
| 5 | NON-INV-INPUT B | Non-Inverting Input of Amplifier B |
| 6 | INV-INPUT B | Inverting Input of Amplifier B |
| 7 | OUT B | Output of Amplifier B |
| 8 | OUT C | Output of Amplifier C |
| 9 | INV-INPUT C | Inverting Input of Amplifier C |
| 10 | NON-INV-INPUT C | Non-Inverting Input of Amplifier C |
| 11 | V- | Negative Power Supply |
| 12 | NON-INV-INPUT D | Non-Inverting Input of Amplifier D |
| 13 | INV-INPUT D | Inverting Input of Amplifier D |
| 14 | OUT D | Output of Amplifier D |
This layout matches most quad op amps, so you can use the same PCB footprint for different brands.
Pin Functions
Each pin has a special job. You connect your input signals to the inverting (INV) or non-inverting (NON-INV) inputs. The outputs send the amplified signals to the next part of your circuit. The V+ and V- pins give power to the chip. You must connect these to the correct voltage for the OP400HS to work.
Tip: Place decoupling capacitors close to the V+ and V- pins. This helps keep your op amp stable and reduces noise.
When you design your PCB, keep the input traces short. This lowers the chance of picking up unwanted noise. Try to keep the power supply lines thick and direct. If you use all four amplifiers, make sure you label each input and output clearly on your board. This helps you avoid mistakes during assembly and testing.
You can use the OP400HS in many projects because the pinout is simple and standard. This makes your design process easier and helps you build reliable circuits.
Precision Quad Op Amp Applications
You can use a precision quad op amp in many important ways. This chip has four amplifiers inside one small package. It lets you make complex circuits without using much space. You get high accuracy and low noise, which helps in many areas.
Instrumentation
Sometimes you need to measure very small signals from sensors. A precision quad op amp helps you get clear and correct readings. For example, you can use it in strain gauge circuits or thermistor amplifiers. These jobs need high accuracy and little drift. The OP400HS, LT1014, and OP747AR are good choices for these uses. You can trust these operational amplifiers to keep your measurements steady over time.
Tip: Use a precision quad op amp when you want to read tiny voltage changes from sensors.
Signal Conditioning
A precision quad op amp can clean up and boost signals before they go to other parts of your system. Signal conditioning means removing noise and setting the right signal level. You might use this in data collection systems or sensor connections. The amplifier’s accuracy keeps your signal correct. You can use all four channels for different signals in one chip.
Filters
You can make active filters with a precision quad op amp. These filters help you pick the signals you want and block others. Multi-channel filters are used in audio, medical, and industrial systems. Each amplifier can be used for a different filter stage. This saves space and makes your design easier. The low noise and high accuracy help your filters work better.
Industrial and Medical
You can use a precision quad op amp in many factory and medical devices. In factories, they help with process control and watching sensors. In medical tools, you need high accuracy to keep patients safe. The OP400HS and similar chips give you steady performance in these important jobs. You can use them to boost signals in ECG machines, temperature monitors, and more.
Note: Many engineers pick precision quad op amps because they are flexible and accurate for tough jobs.
You can see that operational amplifiers like the OP400HS, LT1014, and OP747AR work well in many precision uses. You get steady and correct results in every project.
Alternatives
When you choose a precision quad op amp, you have several good options. The OP400HS is not the only choice. You can also look at the LT1014 and OP747AR. Each one has strengths for different projects.
LT1014
The LT1014 stands out for its efficiency and reliability. You get very low input offset voltage and low drift, which means your measurements stay accurate over time. The LT1014CN version uses a special output stage. This design lets it handle more load current while keeping high voltage gain. It draws only about 350 μA per amplifier, so it saves power and works well in battery-powered devices.
| Feature | OP400HS | LT1014 |
|---|---|---|
| Input Offset Voltage | 80 μV | 50 μV |
| Supply Current/Channel | 600 μA | 350 μA |
| Channels | 4 | 4 |
| Noise | Low | Very Low |
Tip: Choose the LT1014 if you want high efficiency and need to save battery life.
OP747AR
The OP747AR gives you low noise and good stability. You can use it in sensor circuits and signal conditioning. It has a low input offset voltage, but it is not as low as the LT1014. The OP747AR works well in multi-channel systems where you need each channel to be stable and quiet.
| Feature | OP400HS | OP747AR |
|---|---|---|
| Input Offset Voltage | 80 μV | 150 μV |
| Supply Current/Channel | 600 μA | 500 μA |
| Channels | 4 | 4 |
| Noise | Low | Low |
Note: The OP747AR is a good fit for sensor arrays and data acquisition systems.
Selection Tips
You should think about these trade-offs when you pick a quad op amp:
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Precision: How accurate do you need your readings?
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Stability: Will your circuit face changing temperatures or long-term use?
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Efficiency: Do you need to save power, especially in battery devices?
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Power consumption: How much current can your system handle?
If you want the lowest offset voltage and best efficiency, the LT1014 is a strong choice. If you need good stability and low noise for sensor work, the OP747AR is a solid pick. The OP400HS gives you a balance of precision, reliability, and standard pinout. Always match your choice to your project’s needs for the best results.
You should pick the OP400HS because it is accurate, dependable, and flexible. The table below shows what makes it special:
| Feature | Benefit |
|---|---|
| Four amplifiers in one chip | Saves space and helps channels match better |
| Low power use | Good for battery-powered gadgets |
| Wide voltage range | Works well in lots of places |
| Robust performance | Handles big temperature changes easily |
Use the OP400HS for jobs that need careful measuring or for regular signal boosting. If you want even less power use or less noise, you can try the LT1014 or OP747AR. Always choose the op amp that fits your project best. Knowing about features, pin layout, and uses helps you avoid problems like using the wrong resistor or having too much voltage. This helps you build circuits that work right the first time.
Written by Jack Elliott from AIChipLink.
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