ADA4077-2ARZ - Dual Precision Op Amp | Analog Devices
MPN: ADA4077-2ARZ ✓ NakahandaADA4077-2ARZ Ulas
An operational amplifier (op amp) is a high-gain voltage amplifier with differential inputs and a single-ended output. It is a fundamental building block in analog electronics, used in signal conditioning, filtering, and mathematical operations. The ADA4077-2 is a precision op amp, meaning it offers superior DC accuracy (low offset voltage and drift) and low noise, which are critical for applications requiring high resolution and stability.
Key features of the ADA4077-2ARZ include a maximum offset voltage of 15 µV (A grade) and a drift of 0.15 µV/°C, input bias current of 0.5 nA, and a gain bandwidth product of 3.6 MHz. It operates from a supply voltage range of ±2.5 V to ±15 V (or 5 V to 30 V single supply) and has a quiescent current of 400 µA per amplifier. The output is stable with capacitive loads greater than 1000 pF, and it has a wide operating temperature range of -40°C to +125°C with an MSL1 rating.
The ADA4077-2 uses a precision bipolar process that achieves low offset and drift without the need for chopping, ensuring low noise and high DC accuracy. It is designed as a drop-in replacement for older OPxx77 devices, with improved specifications in most areas. The amplifier provides excellent AC performance with a slew rate of 1.2 V/µs and a low 1/f noise corner, making it suitable for both DC and AC precision applications.
Typical applications include line-powered and portable instrumentation, precision filters, voltage and current measurement, level setting, and sensor signal conditioning. The dual configuration is ideal for stereo audio processing, bridge amplifiers, and multi-channel data acquisition systems.
When designing with the ADA4077-2ARZ, ensure proper power supply decoupling with 0.1 µF capacitors close to the supply pins. The input common-mode range extends to the negative rail, but for best performance, keep inputs within the specified input voltage range. The device is available in tape and reel packaging for automated assembly.
Mga alternatibo na pwedeng ilagay na ADA4077-2ARZ — parehas na package, pin-to-pin na katugmang. Hindi kasama ang mga bahagi ng iba't-ibang package na nangangailangan ng pagpapaayos ng PCB.
Variante sa Seri na ito
Katulad na modelo sa serye na katugma sa pagpasok ADA4077-2ARZ (parehas na form factor at footprint) — pagkakaiba sa Capacitive Load Stability, Gain Bandwidth Product, Input Bias Current, Maximum Offset Voltage, Quiescent Current per Amplifier.
OP2177ARZ
Magkontak para sa presyo
Tingnan ang Datasheet →ADA4077-2ARMZ
📋 Alternatibo na Reference (hindi sa katalogo)
ADA4077-2ARZ-R7
📋 Alternatibo na Reference (hindi sa katalogo)
ADA4077-2ARZ-RL
📋 Alternatibo na Reference (hindi sa katalogo)
OPA2177AIDR
📋 Alternatibo na Reference (hindi sa katalogo)
ADA4077-2ARZ Mga Pinakamataas na Rating at Electrical Characteristics
| Number of Channels | 2 |
| Gain Bandwidth Product | 3.6 MHz |
| Slew Rate | 1.2 V/µs |
| Maximum Offset Voltage | 15 µV (A grade) |
| Offset Voltage Drift | 0.15 µV/°C |
| Input Bias Current | 0.5 nA |
| Supply Voltage Range | ±2.5 V to ±15 V (or 5 V to 30 V single supply) |
| Quiescent Current per Amplifier | 400 µA |
| Capacitive Load Stability | >1000 pF |
| Hanay ng Temperature na Operasyon | -40°C to +125°C |
| Packhaging | 8-lead SOIC |
| Level ng MSL | 1 |
| Tindminan RoHS | Compliant |
| Hanay ng Voltage ng Input | -13.8 V to +13 V (at ±15 V supply) |
| Output Voltage Swing | -13.5 V to +14.1 V (at ±15 V supply) |
Pin Configuration ng ADA4077-2ARZ
| Pin 1 | OUT A — Output of amplifier A |
| Pin 2 | -IN A — Inverting input of amplifier A |
| Pin 3 | +IN A — Non-inverting input of amplifier A |
| Pin 4 | V- — Negative supply voltage |
| Pin 5 | +IN B — Non-inverting input of amplifier B |
| Pin 6 | -IN B — Inverting input of amplifier B |
| Pin 7 | OUT B — Output of amplifier B |
| Pin 8 | V+ — Positive supply voltage |
Tipikal na mga Gamit
ADA4077-2ARZ ay nararapat para sa 6 aplikasyons: Precision Instrumentation, Precision Filters, Voltage and Current Measurement, Sensor Signal Conditioning, Audio Processing, Data Acquisition Systems.
Precision Instrumentation
The ADA4077-2ARZ is ideal for precision instrumentation due to its extremely low offset voltage (15 µV max) and drift (0.15 µV/°C). In a data acquisition system, it can amplify small sensor signals with minimal error. Its low input bias current (0.5 nA) reduces errors when driving high-impedance sources. The dual configuration allows for differential or multi-channel measurements, and its wide supply range supports both battery and line-powered designs.
Inirekomenda
Precision Filters
The ADA4077-2ARZ is well-suited for precision active filters, such as low-pass and high-pass filters in signal conditioning chains. Its 3.6 MHz gain bandwidth product and 1.2 V/µs slew rate allow accurate filtering of signals up to a few hundred kHz. The low offset and drift ensure DC accuracy in the passband. The dual package enables implementing a second-order filter with a single IC, saving board space. Its low noise contributes to a high signal-to-noise ratio.
Inirekomenda
Voltage and Current Measurement
The ADA4077-2ARZ is excellent for voltage and current measurement circuits, such as shunt-based current sensing and precision voltage dividers. Its low offset voltage (15 µV) and drift (0.15 µV/°C) minimize measurement errors. The low input bias current (0.5 nA) reduces loading on high-impedance sources. The dual amplifier can be used for differential sensing or to buffer reference voltages. Its wide supply range accommodates various measurement systems.
Inirekomenda
Sensor Signal Conditioning
The ADA4077-2ARZ is ideal for conditioning signals from sensors like thermocouples, RTDs, and strain gauges. Its low offset and drift ensure accurate amplification of small sensor outputs. The low input bias current minimizes errors from high source impedances. The dual configuration allows for bridge excitation and amplification in a single package. Its low noise preserves sensor signal integrity, and the wide temperature range (-40°C to +125°C) suits industrial environments.
Inirekomenda
Audio Processing
The ADA4077-2ARZ is suitable for high-quality audio processing, such as active crossovers and equalizers. Its low noise and low distortion ensure clean audio reproduction. The dual configuration is perfect for stereo channels. With a gain bandwidth of 3.6 MHz, it can handle audio frequencies with ease. The low offset voltage prevents DC offset in the output, which is important for speaker protection. Its low power consumption (400 µA per amp) is beneficial for portable audio devices.
Inirekomenda
Data Acquisition Systems
The ADA4077-2ARZ is a key component in data acquisition systems, providing signal conditioning before ADC conversion. Its low offset and drift ensure accurate representation of analog signals. The low input bias current minimizes errors when driving ADC inputs. The dual amplifier can be used for anti-aliasing filters or buffer stages. Its wide supply range and low power consumption make it suitable for multi-channel DAQ systems. The SOIC package is easy to integrate into PCB designs.
Inirekomenda
Buod ng mga Inirekomendang Produkto
Impormasyon ng Talumpati sa Engineering for ADA4077-2ARZ — ikabit, gabay sa disenyo, at impormasyon ng pagsunod sa kautusan.
Paunawang Hanapin
Ikabit sa Mga Alternatibo
| Parametro | Ito ang Producto | ADA4077-2ARMZ | OP2177ARZ | OPA2177AIDR |
|---|---|---|---|---|
| Package | 8-lead SOIC | 8-lead MSOP | 8-lead SOIC | 8-lead SOIC |
| Brand | Analog Devices | Analog Devices | Analog Devices | Texas Instruments |
| Number of Channels | 2 | 2 | 2 | 2 |
| Gain Bandwidth Product | 3.6 MHz | 3.6 MHz | 1.3 MHz | 10 MHz |
| Maximum Offset Voltage | 15 µV | 15 µV | 50 µV | 50 µV |
| Input Bias Current | 0.5 nA | 0.5 nA | 1 nA | 1 nA |
| Supply Voltage Range | ±2.5 V to ±15 V | ±2.5 V to ±15 V | ±2.5 V to ±15 V | ±2.5 V to ±18 V |
| Quiescent Current per Amplifier | 400 µA | 400 µA | 500 µA | 750 µA |
Pangunahing mga Pagkakaiba
- Lower offset voltage and drift (kumpara saOP2177ARZ)
- Higher gain bandwidth product (kumpara saOP2177ARZ)
- Lower quiescent current (kumpara saOPA2177AIDR)
Talaan ng Disenyo
Ensure proper power supply decoupling by placing 0.1 µF ceramic capacitors close to the V+ and V- pins. For best performance, use a 10 µF tantalum capacitor in parallel for low-frequency decoupling. The ADA4077-2ARZ operates from ±2.5 V to ±15 V, so verify that the supply rails are within this range and have low noise to avoid degrading the op amp's precision.
For optimal performance, use a ground plane and keep the input traces short and shielded from noise sources. The ADA4077-2ARZ has low input bias current, but high-impedance inputs are susceptible to leakage currents from PCB contamination. Clean the board thoroughly and consider using guard rings around the input pins to minimize leakage. Also, ensure the thermal pad (if present) is properly soldered for heat dissipation.
Avoid exceeding the absolute maximum supply voltage of 30 V. The input common-mode range is limited to -13.8 V to +13 V at ±15 V supplies; operating outside this range can cause phase reversal. Also, the output swing is limited to -13.5 V to +14.1 V, so ensure your circuit does not require outputs beyond these limits. For capacitive loads over 1000 pF, the device is stable, but for larger loads, add a series resistor to isolate the output.
Impormasyon ng Pagsunod sa Kautusan
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free per datasheet.
