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Analog Devices Inc. OP481GSZ-REEL7
- Part No.:
- OP481GSZ-REEL7
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OP481GSZ-REEL7.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,475
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Product details
Overview
OP481GSZ-REEL7 from Analog Devices is a quad ultralow-power rail-to-rail output operational amplifier designed for single-supply signal conditioning in battery-constrained systems. It delivers 4 μA/amplifier supply current, 1.5 mV max offset voltage, and rail-to-rail output swing from 2.7 V to 12 V supplies - enabling precision sensing in safety monitoring, remote sensors, and low-voltage strain gage amplifiers.
For engineers reviewing the OP481GSZ-REEL7 datasheet, OP481GSZ-REEL7 pinout, OP481GSZ-REEL7 application, or OP481GSZ-REEL7 equivalent, key selection criteria include guaranteed rail-to-rail output at ≤4 μA quiescent current, −40°C to +85°C operation, no phase reversal, and compatibility with 14-lead narrow SOIC (R suffix) packaging.
Technical Context
The OP481GSZ-REEL7 uses a precision bipolar input stage with PNP transistors enabling input common-mode range extending to ground - critical for single-supply instrumentation. Its CMOS output stage achieves millivolt-level headroom to both rails while maintaining <4 μA supply current even when saturated.
It features 95–105 kHz gain bandwidth product, 25–28 V/ms slew rate, and 65–120 μs saturation recovery time across 3 V/5 V/±5 V supplies. Input bias current remains ≤10 nA over temperature, and CMRR exceeds 65 dB from 0 V to supply −1 V common-mode range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Current/Amplifier | Max 4 μA at 25°C; ensures >10-year battery life in coin-cell-powered sensors. |
| Input Offset Voltage | Max 1.5 mV at 25°C; enables accurate DC-coupled amplification of sub-10 mV sensor signals. |
| Rail-to-Rail Output Swing | VOL ≤75 mV above V−, VOH ≥4.925 V at V+ = 5 V; preserves full dynamic range in 3.3 V/5 V systems. |
| Gain Bandwidth Product | 95–105 kHz; supports stable closed-loop gain up to ~100× for low-frequency sensor interfaces. |
| Operating Temperature Range | −40°C to +85°C; qualified for industrial and automotive cabin-sensing applications. |
| Input Common-Mode Range | 0 V to V+ − 1 V (single-supply); allows direct interfacing to grounded transducers without level-shifting. |
| Saturation Recovery Time | 65–120 μs; enables reliable comparator use in window-detection circuits with fast fault response. |
Pinout & Package
OP481GSZ-REEL7 is packaged in a 14-lead narrow-body SOIC (R suffix), 3.9 mm × 8.65 mm body, 1.27 mm pitch. Pin 1 is marked by a beveled corner or dot.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | OUT A | Amplifier A output; drives loads up to ±1.1 mA while maintaining rail-to-rail swing. |
| 2 | –IN A | Inverting input of Amp A; accepts common-mode voltages from V− to V+ − 1 V. |
| 3 | +IN A | Noninverting input of Amp A; matched to –IN A for <2.5 mV offset over temperature. |
| 4 | V+ | Positive supply rail; supports 2.7 V to 12 V single-supply or ±1.35 V to ±6 V dual-supply operation. |
| 5 | +IN B | Noninverting input of Amp B; electrically isolated from other channels with >105 dB channel separation at 1 kHz. |
| 6 | –IN B | Inverting input of Amp B; shares same input structure and bias current specs as Amp A. |
| 7 | OUT B | Amplifier B output; identical performance to OUT A; no crosstalk-induced distortion. |
| 8 | OUT D | Amplifier D output; fourth independent output; enables compact quad-signal conditioning. |
| 9 | –IN D | Inverting input of Amp D; validated for operation with inputs down to V− (ground) in single-supply mode. |
| 10 | +IN D | Noninverting input of Amp D; supports differential sensing with matched input impedance. |
| 11 | V− | Negative supply rail; tied to ground in single-supply configurations; handles sink current up to ±3.5 mA. |
| 12 | +IN C | Noninverting input of Amp C; enables simultaneous processing of four analog channels on one IC. |
| 13 | –IN C | Inverting input of Amp C; fully specified for −40°C to +85°C with ≤7 nA input offset current. |
| 14 | OUT C | Amplifier C output; rail-to-rail swing confirmed at 3 V, 5 V, and ±5 V supplies per datasheet Figures 11–13. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed under input overvoltage conditions (e.g., signal below V−), preventing erroneous output states in safety-critical monitoring. |
| Ultralow supply current | ≤4 μA/amplifier at 25°C and ≤5 μA over full temperature range - reduces system power budget by >50% vs. standard micropower op amps. |
| Rail-to-rail output with load drive | Maintains ≤75 mV from rail at 100 kΩ load; enables direct interface to ADCs with 0–VREF input ranges without external level-shifting. |
| Input common-mode range to V− | Operates with inputs at ground in single-supply mode - eliminates need for negative biasing in bridge sensor front-ends. |
| Fast saturation recovery | 65 μs (3 V) to 120 μs (±5 V); supports reliable comparator use in battery-monitoring window detectors with <100 μs fault response. |
| Low input bias current drift | ΔIB/ΔT ≤20 pA/°C; ensures stable high-impedance sensor node biasing across industrial temperature extremes. |
Applications
| Remote Sensor Signal Conditioning | Battery-Powered Safety Monitoring |
|---|---|
Use Scenario: Amplifying microvolt-level outputs from thermistors, RTDs, or piezoresistive pressure sensors in wireless IoT nodes. IC Role / Device Role / Timing Role: Quad amplifier provides simultaneous gain, filtering, and reference buffering for four sensor channels in one package. Use Value: 4 μA/amplifier current extends CR2032 battery life beyond 5 years while preserving 12-bit effective resolution via 1.5 mV offset. |
Use Scenario: Detecting out-of-range voltage, temperature, or gas concentration thresholds in portable medical or industrial safety equipment. IC Role / Device Role / Timing Role: Configured as dual-window comparator using two amplifiers per threshold band; remaining two handle reference generation. Use Value: No phase reversal and 65 μs recovery ensure deterministic fault flag assertion without false triggers during transient input excursions. |
| Low-Voltage Strain Gage Amplifier | Single-Supply Micropower Reference Generator |
Use Scenario: Instrumenting quarter-bridge strain gages powered from 3.3 V rails in structural health monitoring systems. IC Role / Device Role / Timing Role: One amplifier serves as precision difference amplifier; second buffers mid-rail reference; third and fourth condition auxiliary sensors. Use Value: Input common-mode range to ground allows direct connection of grounded bridge legs; rail-to-rail output maximizes ADC utilization. |
Use Scenario: Generating stable 1.65 V bias for ADCs and analog front-ends in ultra-low-power data loggers. IC Role / Device Role / Timing Role: Single amplifier configured as unity-gain buffer for high-impedance resistor divider; draws <5 μA total including divider current. Use Value: Eliminates need for dedicated voltage reference IC, reducing BOM count and PCB area while maintaining <0.1% drift over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad micropower op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OP482ARUZ | Same pinout, 5 μA/amplifier max supply current, 2.5 mV max offset voltage, TSSOP-14 package. | Higher quiescent current and offset reduce usable dynamic range in precision 3 V sensor interfaces. | Select OP482ARUZ only if TSSOP footprint is required and 1 mV additional offset is acceptable. |
| TLV2464IPW | 10 μA/amplifier supply current, 3.5 mV max offset, rail-to-rail I/O, but no guaranteed no-phase-reversal behavior. | Lacks input overvoltage robustness; unsuitable for safety-critical monitoring where inputs may exceed rails. | Choose TLV2464IPW for cost-sensitive non-safety applications where 2.5× higher supply current is tolerable. |
Compared with OP481GSZ-REEL7, OP482ARUZ trades minor performance degradation for TSSOP packaging flexibility, while TLV2464IPW offers broader voltage range (2.7–6 V) but sacrifices input fault tolerance and precision - making OP481GSZ-REEL7 optimal for battery-life-critical, safety-assured designs.
Availability
OP481GSZ-REEL7 is available at Aetrix Electronics and suitable for remote sensor nodes, battery-powered safety monitors, and low-voltage strain gage amplifiers requiring stable component supply across multi-year production cycles.
Supply support for OP481GSZ-REEL7 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and consumer markets since 1965.
The OPx81 family - including OP481GSZ-REEL7 - was engineered specifically for ultralow-power, rail-to-rail signal conditioning in single-supply battery-operated instrumentation, emphasizing supply current stability under saturation and input robustness at ground-referenced nodes.
FAQ
What is the maximum supply voltage rating for OP481GSZ-REEL7?
The absolute maximum supply voltage for OP481GSZ-REEL7 is 16 V across V+ to V−. Operation is specified from 2.7 V to 12 V for single-supply use and ±1.35 V to ±6 V for dual-supply configurations. Exceeding 16 V risks permanent damage per datasheet Table 4.
Does OP481GSZ-REEL7 support true rail-to-rail input operation?
OP481GSZ-REEL7 does not support rail-to-rail input; its input common-mode range extends from V− to V+ − 1 V. However, it does provide rail-to-rail output swing - delivering VOL ≤75 mV above V− and VOH ≥4.925 V below V+ at 5 V supply - as verified in datasheet Tables 1–3 and Figures 11–13.
Can OP481GSZ-REEL7 be used as a comparator?
Yes, OP481GSZ-REEL7 is explicitly characterized for comparator use due to its no-phase-reversal behavior and fast 65–120 μs saturation recovery time. The datasheet confirms propagation delay of 250 μs in comparator mode and provides window comparator and low-side current monitor reference circuits in Applications section.
What is the thermal resistance θJA for OP481GSZ-REEL7 in SOIC packaging?
For the 14-lead narrow-body SOIC (R suffix) package used by OP481GSZ-REEL7, the junction-to-ambient thermal resistance θJA is 120°C/W under worst-case PCB mounting conditions, as specified in datasheet Table 5. This value assumes standard JEDEC 2-layer board layout per industry test standards.
Is OP481GSZ-REEL7 qualified for automotive applications?
OP481GSZ-REEL7 is specified for the extended industrial temperature range (−40°C to +85°C) and is not AEC-Q200 qualified. While it operates reliably within automotive cabin environments, Analog Devices does not certify it for under-hood or safety-critical automotive subsystems requiring formal qualification.
OP481GSZ-REEL7 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.028V/µs
- Gain Bandwidth Product:
- 105 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 3 nA
- Voltage - Input Offset:
- 100 µV
- Current - Supply:
- 3.3µA (x4 Channels)
- Current - Output / Channel:
- 12 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OP481GSZ-REEL7 FAQ
1.How can I place an order for OP481GSZ-REEL7 through Aetrix?
Please submit a Request for Quotation (RFQ) for OP481GSZ-REEL7 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 OP481GSZ-REEL7 reliable?
The price and inventory of OP481GSZ-REEL7 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP481GSZ-REEL7 is usually 5 days.
3.What payment methods are accepted for OP481GSZ-REEL7?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP481GSZ-REEL7 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP481GSZ-REEL7?
OP481GSZ-REEL7 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP481GSZ-REEL7 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 OP481GSZ-REEL7?
For technical support, including OP481GSZ-REEL7 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP481GSZ-REEL7 requirements.
6.How does Aetrix verify that OP481GSZ-REEL7 is sourced from the original manufacturer or authorized distributors?
All OP481GSZ-REEL7 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 OP481GSZ-REEL7 meets industry standards.
7.What is the process for return or replacement of OP481GSZ-REEL7?
All OP481GSZ-REEL7 units undergo pre-shipment inspection (PSI). If there is an issue with OP481GSZ-REEL7, 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 OP481GSZ-REEL7 part is unused and in its original packaging.
Return procedure for OP481GSZ-REEL7:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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