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Analog Devices Inc. OP279GRUZ-REEL
- Part No.:
- OP279GRUZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
OP279GRUZ-REEL.pdf
- Description:
- IC BUFFER 2 CIRCUIT 8TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,939
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Product details
Overview
OP279GRUZ-REEL from Analog Devices is a dual, rail-to-rail input/output operational amplifier optimized for high-output-current, single-supply applications. It delivers ±60 mA typical output current, supports 4.5 V to 12 V supply operation, and maintains stability with up to 10 nF capacitive loads - enabling direct drive of headphones, LCD bias rails, FET gates, and telecom transformers in 5 V systems.
For engineers reviewing the OP279GRUZ-REEL datasheet, OP279GRUZ-REEL pinout, OP279GRUZ-REEL application, or OP279GRUZ-REEL equivalent, key selection criteria include verified rail-to-rail swing (±4.8 V/75 mV at 10 mA), low THD (<0.01% @ 600 Ω), 5 MHz gain-bandwidth, 3 V/µs slew rate, and guaranteed industrial temperature operation (–40°C to +85°C) in TSSOP-8 packaging.
Technical Context
The OP279GRUZ-REEL employs a dual-PNP input stage with dynamic common-mode range switching-active Q5-Q6 below ~1 V from VNEG and Q7-Q8 above ~1 V from VPOS-to sustain rail-to-rail input operation without phase reversal. Its complementary common-emitter output stage achieves <50 mV saturation voltage, enabling >98% supply rail utilization under load.
Internal input clamping diodes protect against overvoltage but require external series resistors if input exceeds supply by >0.6 V. Output transient recovery is <500 ns to 0.1% for 10 mA load steps, and overload recovery is 1.0 µs (positive) / 1.2 µs (negative) from saturation - critical for fast-settling buffer and reference-regulator applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +4.5 V to +12 V - enables direct use in 5 V and 12 V industrial, telecom, and audio systems without level-shifting. |
| Output Current (Sink/Source) | ±60 mA typical - drives 600 Ω headphones, 110 Ω telecom lines, or power transistors without external buffers. |
| Gain Bandwidth Product | 5 MHz - supports stable unity-gain operation and audio bandwidth (20 kHz) at gains up to 250. |
| Slew Rate | 3 V/µs - ensures <1 µs settling for 4 V step signals, suitable for DAC output buffering and fast reference regulation. |
| Total Harmonic Distortion | <0.01% @ 1 kHz, 600 Ω - meets high-fidelity audio and precision analog front-end requirements. |
| Input Common-Mode Range | 0 V to 5 V (at VS = 5 V) - accepts ground-referenced inputs in single-supply configurations without attenuation. |
| Capacitive Load Drive | Stable up to 10 nF - eliminates need for external isolation resistors when driving LCD column drivers or ADC input filters. |
Pinout & Package
OP279GRUZ-REEL is housed in an 8-lead TSSOP (RU-8) package, 3.0 mm × 3.0 mm × 1.0 mm profile, lead pitch 0.65 mm, moisture sensitivity level 1 (MSL1), RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN A) | Inverting input of Amplifier A | Accepts differential signal referenced to common-mode voltage; clamped internally to prevent damage beyond ±0.6 V of supplies. |
| 2 (+IN A) | Non-inverting input of Amplifier A | Supports rail-to-rail common-mode input (0 V to VS); balanced source impedance required for optimal DC/AC performance. |
| 3 (OUT B) | Output of Amplifier B | Delivers ±60 mA; capable of sourcing/sinking into 10 nF loads while maintaining stability and low overshoot. |
| 4 (IN B) | Inverting input of Amplifier B | Electrically identical to Pin 1; shares same input stage architecture and bias current behavior as Amplifier A. |
| 5 (V−) | Negative supply rail (GND in single-supply) | Reference for all internal biasing; must be low-impedance; thermal resistance θJC = 43°C/W. |
| 6 (V+) | Positive supply rail | Accepts 4.5 V to 12 V; PSRR >70 dB across 10 Hz–1 MHz ensures noise rejection in noisy digital environments. |
| 7 (+IN B) | Non-inverting input of Amplifier B | Matches Pin 2 characteristics; enables independent dual-channel configuration without crosstalk degradation. |
| 8 (OUT A) | Output of Amplifier A | Same drive capability and transient response as Pin 3; allows simultaneous dual-buffer or differential driver topologies. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input and output swing | Operates with inputs from 0 V to VS and outputs within 50 mV of either rail - maximizes dynamic range in 5 V systems. |
| No phase reversal | Maintains correct polarity even when inputs exceed common-mode limits - eliminates need for external clamping diodes in most designs. |
| Short-circuit protected output | Limits current to ±50 mA (typ.) during fault conditions - prevents latch-up and enables safe operation in motor/FET gate drive. |
| Low distortion at full swing | THD <0.01% with 600 Ω load at 1 kHz - preserves signal fidelity in audio line drivers and DAC output stages. |
| Unity-gain stable | Guaranteed stable at AV = 1 with 10 nF load - simplifies design of voltage followers and active filters without compensation networks. |
Applications
| Headphone Driver | Telecom Transformer Driver |
|---|---|
Use Scenario: Driving stereo 32 Ω or 600 Ω headphones from a 5 V microcontroller DAC output in portable multimedia devices. IC Role / Device Role / Timing Role: Dual-channel voltage follower/buffer with high current delivery and low THD. Use Value: Eliminates need for discrete transistor buffers; delivers >100 mW per channel into 32 Ω with <0.01% distortion and no external components. | Use Scenario: Transmitting differential analog signals across 110 Ω telephone lines in modem DAA circuits powered from single 5 V supply. IC Role / Device Role / Timing Role: High-swing, high-current line driver with rail-to-rail output enabling ±2.25 V p-p signal into transformer primary. Use Value: Achieves >4.5 V p-p differential drive without level-shifting ICs or dual supplies - reduces BOM count and PCB area. |
| LCD Bias Supply | FET Gate Driver |
Use Scenario: Generating stable, low-noise positive/negative bias voltages (e.g., VCOM, VGH, VGL) for segment or active-matrix LCD panels. IC Role / Device Role / Timing Role: Precision op-amp configured as buffered reference regulator with sink/source capability. Use Value: Delivers up to 30 mA at <1 mV load regulation error - replaces discrete regulators and improves panel contrast uniformity. | Use Scenario: Directly driving N-channel and P-channel MOSFET gates in low-side/high-side switch configurations for servo control or power management. IC Role / Device Role / Timing Role: Fast transient current source/sink for rapid MOSFET turn-on/turn-off with minimal gate ringing. Use Value: Reduces gate drive loop inductance; enables <500 ns load-step recovery - improves efficiency and EMI in 12 V servo amplifiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-current, rail-to-rail op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2340UA/2K5 | Lower output current (±20 mA), higher quiescent current (1.6 mA per amp vs. 3.5 mA), same TSSOP-8 package. | Not suitable for >25 mA loads like transformer or headphone drive; better for low-power sensor interfaces. | Select OP279GRUZ-REEL when ≥±40 mA drive or 10 nF capacitive load stability is required. |
| AD8672ARZ-REEL7 | Higher precision (50 µV VOS), lower noise (10 nV/√Hz), but only ±10 mA output and no rail-to-rail output swing. | Preferred for precision instrumentation; unsuitable for audio or power drive due to limited output swing and current. | Choose OP279GRUZ-REEL for applications demanding both high fidelity and high current - not just low noise or low offset. |
Compared with OPA2340UA/2K5 and AD8672ARZ-REEL7, OP279GRUZ-REEL uniquely combines ±60 mA drive, rail-to-rail I/O, 10 nF capacitive load stability, and <0.01% THD - making it the only option among the three for direct 5 V headphone or telecom line driving without external boost stages.
Availability
OP279GRUZ-REEL is available at Aetrix Electronics and suitable for multimedia audio interfaces, telecom line drivers, LCD bias generation, and industrial servo control requiring stable component supply across extended temperature ranges.
Supply support for OP279GRUZ-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 OP279GRUZ-REEL belongs to Analog Devices' rail-to-rail, high-output-current op-amp family designed specifically for single-supply multimedia, telecom, and industrial interface applications where drive strength and low distortion are co-critical.
FAQ
What is the maximum capacitive load the OP279GRUZ-REEL can drive without oscillation?
The OP279GRUZ-REEL is specified to remain stable with up to 10 nF of capacitive load at unity gain, as confirmed in its datasheet's "Capacitive Load Drive" section and validated by TPC 18 (Small Signal Overshoot vs. Load Capacitance). This makes OP279GRUZ-REEL suitable for driving LCD column lines, ADC input filters, and long cables without external isolation resistors - though bandwidth drops below 1 MHz for loads >3 nF.
Does the OP279GRUZ-REEL support true rail-to-rail input and output operation?
Yes, the OP279GRUZ-REEL supports rail-to-rail input (0 V to VS) and output (within 50 mV of either rail) across its full industrial temperature range. At VS = 5 V, VOH = +4.8 V and VOL = 75 mV at 10 mA load, confirming >95% rail utilization. Its dual-PNP input stage and complementary emitter-follower output stage enable this performance without phase reversal.
What is the typical supply current per amplifier in the OP279GRUZ-REEL?
The OP279GRUZ-REEL draws less than 3.5 mA per amplifier at VS = 5 V and TA = 25°C, as specified in the Electrical Specifications table. This value remains stable across temperature (TPC 10 shows 3.3–3.6 mA from –40°C to +85°C), enabling efficient operation in battery-powered or thermally constrained designs while delivering ±60 mA output current.
Can the OP279GRUZ-REEL be used in single-supply 5 V audio applications?
Yes - the OP279GRUZ-REEL is explicitly characterized for 5 V operation with THD <0.01% into 600 Ω, 21 nV/√Hz input voltage noise, and 5 MHz bandwidth. Its rail-to-rail I/O, low distortion, and high output current make OP279GRUZ-REEL ideal for headphone drivers, DAC output buffers, and active filters in portable audio equipment powered from USB or LDO sources.
Is the OP279GRUZ-REEL pin-compatible with other TSSOP-8 op-amps?
No - the OP279GRUZ-REEL has a unique pinout (IN A, +IN A, OUT B, IN B, V−, V+, +IN B, OUT A) that differs from standard dual-op-amp configurations (e.g., SOIC-8 pinout order). Substituting it into existing layouts requires PCB revision. Always verify pin mapping using the "8-Lead TSSOP (RU-8)" diagram in the OP279 datasheet before integration.
OP279GRUZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Buffer
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 3V/µs
- Gain Bandwidth Product:
- 5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 300 nA
- Voltage - Input Offset:
- 4 mV
- Current - Supply:
- -
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-TSSOP
OP279GRUZ-REEL FAQ
1.How can I place an order for OP279GRUZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for OP279GRUZ-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 OP279GRUZ-REEL reliable?
The price and inventory of OP279GRUZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OP279GRUZ-REEL is usually 5 days.
3.What payment methods are accepted for OP279GRUZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OP279GRUZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OP279GRUZ-REEL?
OP279GRUZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OP279GRUZ-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 OP279GRUZ-REEL?
For technical support, including OP279GRUZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OP279GRUZ-REEL requirements.
6.How does Aetrix verify that OP279GRUZ-REEL is sourced from the original manufacturer or authorized distributors?
All OP279GRUZ-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 OP279GRUZ-REEL meets industry standards.
7.What is the process for return or replacement of OP279GRUZ-REEL?
All OP279GRUZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with OP279GRUZ-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 OP279GRUZ-REEL part is unused and in its original packaging.
Return procedure for OP279GRUZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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