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Analog Devices Inc. OP777ARZ-REEL
- Part No.:
- OP777ARZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP777ARZ-REEL.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:13,715
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Product details
Overview
OP777ARZ-REEL from Analog Devices is a precision single-channel rail-to-rail output operational amplifier optimized for micropower, single-supply operation (3.0 V to 30 V) and low-offset sensing applications. It delivers 100 µV max input offset voltage, 10 nA max input bias current, 300 µA max supply current per amplifier at 5 V, rail-to-rail output swing within 1 mV of both rails, and unity-gain stability - enabling high-accuracy current sensing in battery-powered instrumentation.
For engineers reviewing the OP777ARZ-REEL datasheet, OP777ARZ-REEL pinout, OP777ARZ-REEL application, or OP777ARZ-REEL equivalent, key selection criteria include its extended common-mode input range (to –VS), no-phase-reversal protection, 0.4 µVP-P (0.1–10 Hz) input voltage noise, and SOIC-8 packaging compatible with legacy layout footprints while supporting industrial temperature range (–40°C to +85°C).
Technical Context
The OP777ARZ-REEL employs a precision bipolar PNP input stage combined with a high-voltage CMOS output stage, enabling true single-supply operation down to 3.0 V and input common-mode range extending to the negative rail. Its architecture eliminates phase reversal when inputs exceed the common-mode range by up to 3 V, supported by internal 500 Ω series input resistors.
It achieves 110 dB CMRR and 130 dB PSRR at DC, ensuring minimal offset drift under varying supply or common-mode conditions. The amplifier remains stable driving capacitive loads >500 pF and operates across ±1.5 V to ±15 V dual supplies or 3.0 V to 30 V single supplies, with specified performance over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | Max 100 µV at +25°C; enables sub-millivolt error in shunt-based current measurement circuits |
| Supply Current per Amp | Max 320 µA at –40°C to +85°C; supports multi-year battery life in remote sensor nodes |
| Input Bias Current | Max 10 nA; minimizes voltage error across high-impedance sensor interfaces (e.g., thermistors) |
| Output Swing | Rail-to-rail: VOH ≥ 4.91 V / VOL ≤ 140 mV at 5 V supply and 1 mA load; maximizes dynamic range in low-voltage systems |
| Gain Bandwidth Product | 0.7 MHz; sufficient for DC–10 kHz precision signal conditioning without stability compromise |
| Input Voltage Noise | 0.4 µVP-P (0.1–10 Hz); critical for low-frequency, high-resolution bridge or strain gauge amplification |
| Common-Mode Rejection | Min 104 dB; rejects interference in differential measurements with mismatched source impedances |
Pinout & Package
OP777ARZ-REEL is housed in an 8-lead SOIC_N (R-8) package, compliant with JEDEC MS-012-AA, with 1.27 mm lead pitch and surface-mount footprint. Thermal resistance θJA = 158°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Inverting Input (–IN) | Differential input node; accepts signals down to –VS with no phase reversal due to internal protection |
| 2 | Non-Inverting Input (+IN) | Differential input node; supports common-mode range from –VS to (V+) – 1 V |
| 3 | V– | Negative supply terminal; tied to ground in single-supply configurations |
| 4 | V+ | Positive supply terminal; operates from 3.0 V to 30 V (single) or ±1.5 V to ±15 V (dual) |
| 5 | Output | Rail-to-rail output capable of sourcing/sinking ±10 mA; stable with >500 pF capacitive load |
| 6 | No Connect (NC) | Internally unconnected; must remain floating per datasheet |
| 7 | No Connect (NC) | Internally unconnected; must remain floating per datasheet |
| 8 | No Connect (NC) | Internally unconnected; must remain floating per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| No Phase Reversal | Guaranteed operation without polarity inversion when inputs exceed common-mode range by ≤3 V - prevents latch-up in servo feedback loops |
| Rail-to-Rail Output | Swings within 1 mV of both supply rails at light loads, preserving full signal headroom in 3.3 V or 5 V systems |
| Input Overvoltage Protection | 500 Ω series resistors on both inputs limit fault current to safe levels, eliminating need for external clamp diodes |
| Micropower Operation | Sub-350 µA supply current enables integration into energy-harvesting or coin-cell-powered designs |
| Extended Common-Mode Range | Inputs operate from V– to (V+) – 1 V, allowing direct interface to grounded shunts in low-side current sensing |
Applications
| Current Sensing (Shunt) | Line or Battery-Powered Instrumentation |
|---|---|
Use Scenario: Monitoring load current in a 5 V DC power supply using a 0.1 Ω ground-referenced shunt resistor. IC Role / Device Role / Timing Role: Precision difference amplifier configured as low-side current monitor with gain set by external resistors. Use Value: Achieves <100 µV total input-referred error, enabling accurate 1 A sensing with ±0.1% full-scale accuracy. | Use Scenario: Signal conditioning for a handheld multimeter measuring DC voltage, current, and resistance. IC Role / Device Role / Timing Role: Front-end buffer and programmable-gain amplifier for analog input channels. Use Value: Micropower consumption extends battery life beyond 200 hours; rail-to-rail output maximizes ADC utilization. |
| Remote Sensors | Precision Filters |
Use Scenario: Amplifying low-level thermocouple or RTD signals in an industrial wireless sensor node powered by a Li-SOCl₂ battery. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier stage with cold-junction compensation. Use Value: 0.3 µV/°C offset drift ensures <0.5°C measurement error over –40°C to +85°C ambient range. | Use Scenario: Implementing a 2nd-order Sallen-Key low-pass filter in a medical ECG front-end with 0.5 Hz cutoff. IC Role / Device Role / Timing Role: Unity-gain stable active filter amplifier with low 1/f noise to preserve ST-segment fidelity. Use Value: 0.4 µVP-P (0.1–10 Hz) noise avoids masking microvolt-level cardiac signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8603ARZ-REEL | Lower supply current (1 µA typ), but higher offset (300 µV max) and lower PSRR (105 dB) | Better for ultra-low-power wake-on-event sensors; less suitable for high-accuracy DC measurements | Select AD8603ARZ-REEL only when sub-microamp quiescent current outweighs offset and PSRR requirements |
| ADA4528-1ARMZ-REEL | Lower offset (2.5 µV max), zero-drift architecture, but higher supply current (420 µA max) and cost | Required for <1 µV drift-critical applications (e.g., precision weigh scales); over-specified for general instrumentation | Choose ADA4528-1ARMZ-REEL when offset drift must be <0.01 µV/°C - not for cost-sensitive, moderate-accuracy use cases |
Compared with AD8603ARZ-REEL and ADA4528-1ARMZ-REEL, OP777ARZ-REEL strikes a balanced trade-off: it delivers 10× lower offset than AD8603ARZ-REEL while consuming half the current of ADA4528-1ARMZ-REEL - making it optimal for industrial-grade portable instrumentation where accuracy, power, and cost are co-constrained.
Availability
OP777ARZ-REEL is available at Aetrix Electronics and suitable for current sensing (shunt), line or battery-powered instrumentation, remote sensors, precision filters, and low-side monitoring applications requiring stable component supply across production lifecycles.
Supply support for OP777ARZ-REEL includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The OP777 product line targets precision, low-power signal conditioning in space- and energy-constrained systems - specifically engineered for single-supply operation, rail-to-rail output, and robust input protection in industrial and portable instrumentation.
FAQ
What is the maximum supply voltage rating for OP777ARZ-REEL?
The absolute maximum supply voltage for OP777ARZ-REEL is 36 V across V+ and V– terminals. Operating voltage is specified from 3.0 V to 30 V for single-supply use and ±1.5 V to ±15 V for dual-supply configurations. Exceeding 36 V may cause permanent damage, as stated in the Absolute Maximum Ratings table.
Does OP777ARZ-REEL support true rail-to-rail input operation?
OP777ARZ-REEL supports rail-to-rail *output* swing (within 1 mV of both rails), but its input common-mode range extends from V– to (V+) – 1 V - not fully rail-to-rail on the positive side. This allows the inverting and non-inverting inputs to operate down to the negative rail (e.g., ground), which is essential for low-side current sensing, but requires ≥1 V headroom at the positive rail.
Can OP777ARZ-REEL drive capacitive loads without oscillation?
Yes, OP777ARZ-REEL is unity-gain stable and characterized to drive capacitive loads exceeding 500 pF without oscillation or excessive overshoot. This capability simplifies anti-aliasing filter design and enables direct connection to ADC input capacitors or long PCB traces without added isolation resistors.
Is OP777ARZ-REEL pin-compatible with standard 8-lead op amps?
No - OP777ARZ-REEL uses a non-standard 8-lead SOIC pinout where pins 6–8 are No Connect (NC), unlike conventional op amps that assign these to shutdown, enable, or other functions. Engineers must verify layout compatibility; the device is *not* a drop-in replacement for generic SOIC-8 op amps without schematic and footprint review.
What is the typical input voltage noise density of OP777ARZ-REEL at 1 kHz?
The typical input voltage noise density of OP777ARZ-REEL at 1 kHz is 15 nV/√Hz, as specified in the Electrical Characteristics table. This value is confirmed across operating conditions and contributes to its suitability for medium-bandwidth precision applications such as sensor signal conditioning and active filtering where 1/f noise dominates below 10 Hz.
OP777ARZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.2V/µs
- Gain Bandwidth Product:
- 700 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 5 nA
- Voltage - Input Offset:
- 30 µV
- Current - Supply:
- 300µA
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OP777ARZ-REEL FAQ
1.How can I place an order for OP777ARZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for OP777ARZ-REEL on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for OP777ARZ-REEL reliable?
The price and inventory of OP777ARZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP777ARZ-REEL is usually 5 days.
3.What payment methods are accepted for OP777ARZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP777ARZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP777ARZ-REEL?
OP777ARZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP777ARZ-REEL order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for OP777ARZ-REEL?
For technical support, including OP777ARZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP777ARZ-REEL requirements.
6.How does Aetrix verify that OP777ARZ-REEL is sourced from the original manufacturer or authorized distributors?
All OP777ARZ-REEL products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that OP777ARZ-REEL meets industry standards.
7.What is the process for return or replacement of OP777ARZ-REEL?
All OP777ARZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP777ARZ-REEL, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The OP777ARZ-REEL part is unused and in its original packaging.
Return procedure for OP777ARZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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