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Analog Devices Inc. OP747ARU-REEL
- Part No.:
- OP747ARU-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OP747ARU-REEL.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,201
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Product details
Overview
OP747ARU-REEL from Analog Devices is a precision quad rail-to-rail output operational amplifier optimized for micropower, single-supply operation (3.0 V to 30 V) and extended industrial temperature range (–40°C to +85°C). It delivers 100 µV max offset voltage, 10 nA max input bias current, 300 µA/amp supply current at 5 V, rail-to-rail output swing within 1 mV of rails, and unity-gain stability - enabling high-accuracy current sensing in battery-powered instrumentation.
For engineers reviewing the OP747ARU-REEL datasheet, OP747ARU-REEL pinout, OP747ARU-REEL application, or OP747ARU-REEL equivalent, key selection criteria include its 14-lead TSSOP package, quad-channel configuration, low-noise (15 nV/√Hz), high PSRR (130 dB), and guaranteed no phase reversal - critical for remote sensor signal conditioning and precision filter design where input overvoltage resilience and thermal drift control are essential.
Technical Context
The OP747ARU-REEL employs a precision bipolar PNP input stage with high-voltage CMOS output, enabling true rail-to-rail output swing (within 1 mV of both rails) and input common-mode range extending to the negative supply and within 1 V of the positive supply. Its 500 Ω series input resistors prevent phase reversal during overvoltage events up to ±3 V beyond rails.
Specified for dual-supply (±1.5 V to ±15 V) and single-supply (3.0 V to 30 V) operation, it maintains 110 dB CMRR and 130 dB PSRR across temperature, with offset drift as low as 0.4 µV/°C and stable performance into >500 pF capacitive loads - supporting robust operation in noisy, thermally variable environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | 3.0 V to 30 V single-supply; ±1.5 V to ±15 V dual-supply - supports wide-input industrial and battery-powered systems without level-shifting. |
| Input Offset Voltage (max) | 300 µV over –40°C to +85°C - ensures <0.03% gain error in 100× gain current-sense amplifiers at room temperature. |
| Supply Current per Amplifier | 350 µA max at 5 V - enables multi-channel sensing in ultra-low-power portable devices with sub-1.4 mA total quiescent draw. |
| Output Swing | Rail-to-rail, within 1 mV of V+ and V− - preserves full dynamic range in 3.3 V or 5 V ADC interfaces without headroom loss. |
| Gain Bandwidth Product | 0.7 MHz - sufficient for DC–10 kHz precision filtering and closed-loop current monitoring with <1% gain error at 10 kHz. |
| Input Bias Current (max) | 10 nA - allows use with MΩ-range feedback networks in high-impedance sensor front-ends without significant offset shift. |
| PSRR / CMRR | 130 dB PSRR, 110 dB CMRR - minimizes supply ripple and common-mode noise coupling into precision analog signals. |
Pinout & Package
OP747ARU-REEL is housed in a 14-lead TSSOP (RU-14) package, 5.00 mm × 4.40 mm × 1.20 mm, RoHS-compliant, tape-and-reel format (REEL). Pinout matches JEDEC MO-153-AB-1 standard.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | –IN A | Inverting input of Amplifier A - referenced to ground or negative rail in single-supply configurations. |
| 2 | +IN A | Non-inverting input of Amplifier A - accepts signals down to V− and up to V+ − 1 V. |
| 3 | V+ | Positive supply rail - supports 3.0 V to 30 V or +15 V in dual-supply mode. |
| 4 | +IN B | Non-inverting input of Amplifier B - electrically isolated; shares no internal nodes with other channels. |
| 5 | –IN B | Inverting input of Amplifier B - fully differential input pair with matched offset and drift characteristics. |
| 6 | OUT B | Output of Amplifier B - rail-to-rail capable, drives ≥10 kΩ load with <1 mV saturation. |
| 7 | OUT D | Output of Amplifier D - independent channel; supports simultaneous 4-channel signal conditioning. |
| 8 | –IN D | Inverting input of Amplifier D - part of quad architecture with matched AC/DC performance across all channels. |
| 9 | +IN D | Non-inverting input of Amplifier D - enables identical configuration across all four op-amps in instrumentation designs. |
| 10 | V− | Negative supply rail - connected to ground in single-supply operation; supports split supplies down to ±1.5 V. |
| 11 | +IN C | Non-inverting input of Amplifier C - used in bridge amplifier or multi-stage filter topologies requiring phase coherence. |
| 12 | –IN C | Inverting input of Amplifier C - matched to other inputs for consistent CMRR and offset rejection. |
| 13 | OUT C | Output of Amplifier C - provides fourth independent output for multi-channel feedback or signal routing. |
| 14 | OUT A | Output of Amplifier A - first channel output; commonly used as primary sensing amplifier in shunt-based current monitors. |
Key Features
| Feature | Design Value |
|---|---|
| No phase reversal | Guaranteed operation with inputs driven up to 3 V beyond supply rails - eliminates latch-up risk in overvoltage transients during power-up or fault conditions. |
| Rail-to-rail output | Swing within 1 mV of V+ and V− - maximizes usable ADC input range and avoids clipping in low-voltage systems. |
| Micropower consumption | 350 µA/amp max at 5 V - enables 4-channel precision amplification with <1.4 mA total supply current for 10-year coin-cell operation. |
| Low input bias current | 10 nA max - permits use with high-value feedback resistors (>1 MΩ) without degrading accuracy in high-impedance sensor interfaces. |
| High PSRR/CMRR | 130 dB PSRR and 110 dB CMRR - rejects supply noise and common-mode interference in noisy industrial environments. |
Applications
| Current Sensing (Shunt) | Line or Battery-Powered Instrumentation |
|---|---|
Use Scenario: Monitoring load current in a 5 V USB-powered power supply using a 0.1 Ω shunt resistor. IC Role / Device Role / Timing Role: Precision low-side current sense amplifier with rail-to-rail output driving an ADC input. Use Value: Delivers 100 µV offset and 10 nA bias current to achieve <1% full-scale error at 1 A sense current without calibration. | Use Scenario: Signal conditioning for thermocouple outputs in handheld multimeters operating on two AA cells. IC Role / Device Role / Timing Role: Quad-channel amplifier providing cold-junction compensation, gain, filtering, and reference buffering. Use Value: Micropower operation (350 µA/amp) extends battery life while maintaining 0.4 µV/°C offset drift for <0.1 °C measurement uncertainty. |
| Remote Sensors | Precision Filters |
Use Scenario: Amplifying millivolt-level bridge outputs from strain gauges mounted on structural health monitoring nodes. IC Role / Device Role / Timing Role: Low-noise (15 nV/√Hz), high-PSRR quad op-amp configured as instrumentation amplifier and anti-alias filter driver. Use Value: 130 dB PSRR suppresses 50/60 Hz mains noise; rail-to-rail output ensures full utilization of 16-bit sigma-delta ADC range. | Use Scenario: Implementing 4-pole active low-pass filter for audio-grade data acquisition with 10 kHz cutoff. IC Role / Device Role / Timing Role: Quad op-amp configured as two 2nd-order Sallen-Key stages with matched GBW and phase response. Use Value: Unity-gain stability and 0.7 MHz GBP enable precise filter tuning; low input bias current prevents capacitor leakage errors in high-Q designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision micropower operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD8609ARUZ | Quad, rail-to-rail input/output; 1 pA bias current; 1.5 MHz GBP; 1.2 V to 6 V supply; not rated for >30 V operation. | Better for ultra-high-impedance pH sensors; unsuitable for 24 V industrial bus monitoring due to lower max supply voltage. | Select AD8609ARUZ when input bias current <1 pA is mandatory and supply stays ≤6 V; OP747ARU-REEL preferred for 12–30 V systems requiring higher voltage tolerance. |
| OP747ARZ | Same electrical specs and pinout; differs only in 14-lead SOIC (R-14) package instead of TSSOP (RU-14); larger footprint (8.75 mm × 4.00 mm vs. 5.00 mm × 4.40 mm). | Compatible for prototyping on through-hole or legacy SOIC footprints; not suitable for space-constrained PCBs requiring TSSOP density. | Choose OP747ARZ for manual assembly or compatibility with existing SOIC layouts; OP747ARU-REEL for automated SMT and miniaturized designs. |
Compared with AD8609ARUZ and OP747ARZ, the OP747ARU-REEL uniquely balances 30 V absolute maximum supply rating, 10 nA input bias, and compact TSSOP packaging - making it optimal for industrial current monitors and battery-powered instrumentation where voltage range, size, and precision must coexist.
Availability
OP747ARU-REEL is available at Aetrix Electronics and suitable for current sensing (shunt), line or battery-powered instrumentation, and remote sensor signal conditioning requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for OP747ARU-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 Wilmington, MA.
The OP777/OP727/OP747 product line was designed specifically for precision, micropower, rail-to-rail output applications in single-supply and dual-supply systems - targeting instrumentation, sensor interfaces, and portable medical devices where low drift, low noise, and supply resilience are critical.
FAQ
What is the maximum supply voltage rating for the OP747ARU-REEL?
The OP747ARU-REEL has an absolute maximum supply voltage rating of 36 V, with specified operation from 3.0 V to 30 V for single-supply use and ±1.5 V to ±15 V for dual-supply configurations. This makes the OP747ARU-REEL suitable for 24 V industrial bus monitoring and high-headroom precision applications where many micropower op-amps fail.
Does the OP747ARU-REEL support true rail-to-rail input operation?
No, the OP747ARU-REEL features rail-to-rail *output* but not rail-to-rail *input*. Its input common-mode voltage range extends from the negative supply (V−) to within 1 V of the positive supply (V+), allowing operation down to V− and up to V+ − 1 V. This is confirmed in the "Input Common-Mode Voltage Range" section of the datasheet and enables robust low-side current sensing.
Is the OP747ARU-REEL pin-compatible with other quad op-amps like the LM324?
No, the OP747ARU-REEL is not pin-compatible with the LM324 or other industry-standard quad op-amps. Its 14-lead TSSOP pinout (RU-14) follows a custom layout optimized for precision performance - including dedicated V+ and V− pins per side and non-standard channel ordering - as shown in Figure 16 of the datasheet. PCB redesign is required for substitution.
What is the typical input offset voltage drift of the OP747ARU-REEL over temperature?
The OP747ARU-REEL has a typical input offset voltage drift of 0.4 µV/°C over the –40°C to +85°C industrial temperature range, with a maximum of 1.5 µV/°C. This low drift is enabled by its precision bipolar PNP input stage and is verified in TPC 4 of the datasheet - ensuring minimal calibration drift in field-deployed instrumentation.
Can the OP747ARU-REEL drive capacitive loads without instability?
Yes, the OP747ARU-REEL is unity-gain stable and remains stable with capacitive loads exceeding 500 pF, as explicitly stated in the General Description and confirmed in transient response plots (TPC 22–24). This capability simplifies anti-alias filter design and eliminates the need for external isolation resistors in ADC driver applications.
OP747ARU-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 14-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- 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:
- 320µA (x4 Channels)
- 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:
- 14-TSSOP
OP747ARU-REEL FAQ
1.How can I place an order for OP747ARU-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for OP747ARU-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 OP747ARU-REEL reliable?
The price and inventory of OP747ARU-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP747ARU-REEL is usually 5 days.
3.What payment methods are accepted for OP747ARU-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP747ARU-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP747ARU-REEL?
OP747ARU-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP747ARU-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 OP747ARU-REEL?
For technical support, including OP747ARU-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP747ARU-REEL requirements.
6.How does Aetrix verify that OP747ARU-REEL is sourced from the original manufacturer or authorized distributors?
All OP747ARU-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 OP747ARU-REEL meets industry standards.
7.What is the process for return or replacement of OP747ARU-REEL?
All OP747ARU-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP747ARU-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 OP747ARU-REEL part is unused and in its original packaging.
Return procedure for OP747ARU-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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