ADA4077-2ARZ - Dual Precision Op Amp | Analog Devices
Référence : ADA4077-2ARZ ✓ Actif| Qté | Prix unitaire | Total |
|---|---|---|
| 1 | $3.42 | $3,42 |
| 10 | $3.08 | $30,80 |
| 100 | $2.74 | $274,00 |
| 500 | $2.47 | $1 235,00 |
| 1 000 | $2.19 | $2 190,00 |
ADA4077-2ARZ Présentation
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.
Alternatives de remplacement direct pour ADA4077-2ARZ — même boîtier, compatible broche à broche. Les références à boîtier différent nécessitant une retouche du PCB sont exclues.
Variantes de cette série
Modèles de la même série directement compatibles avec ADA4077-2ARZ (même facteur de forme et même empreinte) — différant par Gain Bandwidth Product, Input Bias Current, Amplifier Type, Capacitive Load Stability, Maximum Offset Voltage.
Outil de comparaison rapide — sélectionnez des références alternatives pour une comparaison côte à côte :
ADA4077-2ARZ-R7
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
ADA4077-2ARZ-RL
✅ Remplacement direct📋 Alternative de référence (hors catalogue)
OP2177ARZ
✅ Remplacement direct ⚠️ Spécifications non vérifiées✓ En stock
$0.86 / unité
Voir la fiche technique →OPA2177AIDR
✅ Remplacement direct ⚠️ Spécifications non vérifiées📋 Alternative de référence (hors catalogue)
ADA4077-2ARZ Valeurs maximales et caractéristiques électriques
| 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 |
| Plage de température de fonctionnement | -40°C to +125°C |
| Boîtier | 8-lead SOIC |
| Niveau MSL | 1 |
| Statut RoHS | Compliant |
| Plage de tension d'entrée | -13.8 V to +13 V (at ±15 V supply) |
| Output Voltage Swing | -13.5 V to +14.1 V (at ±15 V supply) |
Configuration des broches de ADA4077-2ARZ
| Broche 1 | OUT A — Output of amplifier A |
| Broche 2 | -IN A — Inverting input of amplifier A |
| Broche 3 | +IN A — Non-inverting input of amplifier A |
| Broche 4 | V- — Negative supply voltage |
| Broche 5 | +IN B — Non-inverting input of amplifier B |
| Broche 6 | -IN B — Inverting input of amplifier B |
| Broche 7 | OUT B — Output of amplifier B |
| Broche 8 | V+ — Positive supply voltage |
Applications typiques
ADA4077-2ARZ convient pour 6 applications: 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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
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.
Recommandé
Récapitulatif des produits recommandés
Données de référence d'ingénierie pour ADA4077-2ARZ — comparaison, recommandations de conception et informations de conformité.
Guide de sélection
Comparaison avec les alternatives
| Paramètre | Ce produit | 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 |
Principaux différenciateurs
- Lower offset voltage and drift (vs OP2177ARZ)
- Higher gain bandwidth product (vs OP2177ARZ)
- Lower quiescent current (vs OPA2177AIDR)
Notes de conception
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.
Informations de conformité
RoHS compliant per Analog Devices product page. Not AEC-Q100 qualified. Lead-free per datasheet.
