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Texas Instruments OPA2674I-14DR
- Part No.:
- OPA2674I-14DR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2674I-14DR.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:777
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Product details
Overview
OPA2674I-14DR from Texas Instruments is a dual wideband current-feedback operational amplifier optimized for high-output-current line driver applications, including xDSL and Power Line Modem systems. It delivers ±500mA output current per channel at ±6V supply, 220MHz small-signal bandwidth (G = +4), 2000V/µs slew rate, and 10VPP output swing into 100Ω - enabling full-rate ADSL upstream transmission with <−85dBc distortion at peak power.
For engineers reviewing the OPA2674I-14DR datasheet, OPA2674I-14DR pinout, OPA2674I-14DR application, or OPA2674I-14DR equivalent, key selection criteria include SO-14 package–specific power control logic (A0/A1), differential I/Q channel matching, capacitive load drive capability up to 1nF, and compliance with ADSL CPE output current and harmonic distortion requirements across −40°C to +85°C.
Technical Context
The OPA2674I-14DR employs a current-feedback architecture with transimpedance gain of 135kΩ (±6V, +25°C), enabling stable high-speed operation independent of closed-loop gain. Its input stage supports ±4.5V common-mode range and features matched inverting/noninverting bias currents (±10µA max) for low DC error in differential configurations.
Power control is implemented via two TTL-compatible logic inputs (A0, A1) on pins 5 and 6, enabling four quiescent states: full power (18mA), power cutback (13.3mA), idle (4.0mA), and shutdown (1.0mA). Output current scales accordingly - ±500mA (full), ±450mA (cutback), ±100mA (idle) - while maintaining >150MHz bandwidth in all modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal BW (G = +4) | 220MHz min at ±6V - supports VDSL2 upstream tones up to 30MHz with margin |
| Output Current (min) | ±320mA over −40°C to +85°C - exceeds ADSL CPE spec of >380mA at +25°C |
| Slew Rate | 1400V/µs min - enables clean 10VPP step response with <2ns rise time |
| Harmonic Distortion | −81dBc 3rd-harmonic @5MHz, 2VPP, RL ≥500Ω - meets broadband video dG/dP <0.1%/0.1° |
| Supply Range | ±6V (spec), +5V or +12V single-supply compatible - supports legacy and modern modem rails |
| Power Control Inputs | A0/A1 logic pins (pins 5/6) - enable dynamic system-level power scaling without external circuitry |
| Shutdown Isolation | 85dB @1MHz - prevents crosstalk between active/inactive channels in multi-channel modems |
Pinout & Package
OPA2674I-14DR is housed in a 14-pin SOIC (SO-14) package with 1.27mm pitch, JEDEC MS-012AC compliant, thermal resistance θJA = 100°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −In A | Inverting input for Channel A - requires matched trace length in differential I/Q layouts |
| 2 | +In A | Noninverting input for Channel A - high-impedance (250kΩ || 2pF) for minimal loading |
| 3 | A0 | Power control logic input (LSB) - sets idle/shutdown state when A1 = 0 |
| 4 | −VS | Negative supply rail - must be decoupled with 0.1µF ceramic near pin |
| 5 | A1 | Power control logic input (MSB) - selects full/cutback mode when A0 = 1 |
| 6 | +In B | Noninverting input for Channel B - electrically isolated from Channel A inputs |
| 7 | −In B | Inverting input for Channel B - matched to Pin 1 for inter-channel phase alignment |
| 8 | Out A | Amplified output for Channel A - drives twisted-pair lines directly with 0.01Ω closed-loop impedance |
| 9 | NC | No connection - not internally bonded; leave unconnected |
| 10 | NC | No connection - not internally bonded; leave unconnected |
| 11 | +VS | Positive supply rail - supports +5V to +12V single-supply or ±6V dual-supply operation |
| 12 | NC | No connection - not internally bonded; leave unconnected |
| 13 | NC | No connection - not internally bonded; leave unconnected |
| 14 | Out B | Amplified output for Channel B - identical AC/DC specs to Out A for matched I/Q paths |
Key Features
| Feature | Design Value |
|---|---|
| Current-feedback architecture | Enables gain-independent bandwidth up to 260MHz (G = +8), eliminating stability tradeoffs in high-gain line drivers |
| Four-level programmable quiescent power | Reduces system power by >70% in idle/shutdown modes without sacrificing startup speed (<200ns transition) |
| Matched dual-channel performance | Channel-to-channel crosstalk <−92dB at 5MHz ensures <0.01° I/Q phase error in quadrature modulators |
| High capacitive load drive | Stable with >1nF loads using recommended RS compensation (e.g., 133Ω series resistor) |
| Robust output protection | ±800mA current limit and thermal shutdown prevent damage during short-circuit or hot-plug events |
Applications
| ADSL/VDSL Upstream Driver | Matched I/Q Channel Amplifier |
|---|---|
Use Scenario: Driving twisted-pair telephone lines in CPE modems for full-rate ADSL (up to 1.1MHz) and VDSL2 (up to 30MHz). IC Role / Device Role / Timing Role: Final-stage line driver delivering >380mA into 100Ω load with <−85dBc distortion at peak upstream power. Use Value: Meets ITU-T G.992.1/G.993.2 spectral mask requirements without external current boosting or complex feedback networks. | Use Scenario: Amplifying in-phase (I) and quadrature (Q) baseband signals prior to RF upconversion in broadband wireless gateways. IC Role / Device Role / Timing Role: Dual-channel, matched-gain driver ensuring <0.01° phase skew and <0.03% gain mismatch between I/Q paths. Use Value: Enables EVM <1.5% in 256-QAM OFDM systems by minimizing image rejection degradation from analog path imbalance. |
| Broadband Video Line Driver | High Capacitive Load Driver |
Use Scenario: Driving multiple parallel 75Ω video loads (e.g., CCTV distribution, broadcast monitor feeds) from a single source. IC Role / Device Role / Timing Role: High-current buffer delivering 10VPP into 15Ω (10× 150Ω loads) with <0.1%/0.1° NTSC dG/dP error. Use Value: Eliminates need for discrete emitter-follower arrays or transformer coupling in SD/HD video routing hardware. | Use Scenario: Driving long PCB traces, cables, or piezoelectric actuators with >500pF total capacitance in industrial automation interfaces. IC Role / Device Role / Timing Role: Stable voltage amplifier with internal compensation and optional external RS (133Ω) for 1nF load. Use Value: Prevents peaking/oscillation in motor control feedback loops or ultrasonic transducer drivers without custom RC networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-current line driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2677IDR | Single-channel, SO-8, no power control logic, ±6V only, 250MHz BW (G=+1), 400mA output | Lacks dual-channel integration and programmable power states - requires two units for I/Q, higher board area | Select when space allows discrete channel implementation and power scaling is handled externally |
| THS6042IDR | Dual-channel, SO-14, ±15V supply, 210MHz BW (G=+2), 320mA output, no power control | Higher supply requirement limits use in +12V-only systems; lower output current reduces ADSL margin | Select for legacy ±15V infrastructure where higher voltage headroom is needed for 20VPP video swing |
Compared with OPA2674I-14DR, OPA2677IDR offers simpler single-channel operation but doubles component count for dual-path designs, while THS6042IDR provides wider supply flexibility at the cost of reduced output current and absence of dynamic power management - making OPA2674I-14DR optimal for space-constrained, power-aware xDSL and I/Q driver implementations.
Availability
OPA2674I-14DR is available at Aetrix Electronics and suitable for xDSL line drivers, matched I/Q amplifiers, broadband video distribution systems, and high-capacitance industrial interface circuits requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2674I-14DR 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
Texas Instruments is a global semiconductor leader specializing in analog and embedded processing technologies, with decades of expertise in high-speed amplifier design and communications infrastructure solutions.
The OPA2674I-14DR belongs to TI's OPAxx74 family of wideband current-feedback op amps, engineered specifically for demanding line driver applications in DSL, powerline, and video systems where high output current, low distortion, and dynamic power control are critical.
FAQ
What supply voltages does the OPA2674I-14DR support?
The OPA2674I-14DR operates from ±6V dual supplies or +5V/+12V single supplies. Its specified operating range is ±6V, with absolute maximum ratings of ±6.5V. At +5V single supply, it delivers ±260mA output current and 168MHz bandwidth (G = +4); at ±6V, it achieves ±500mA and 220MHz. The device maintains functionality down to ±5.5V and up to ±6.3V, supporting robust operation in noisy telecom environments where rail tolerance matters.
How does the power control logic (A0/A1) function on the OPA2674I-14DR?
The OPA2674I-14DR uses pins 3 (A0) and 5 (A1) to select one of four quiescent power states: full power (A1=A0=1, 18mA), power cutback (A1=1,A0=0, 13.3mA), idle (A1=0,A0=1, 4.0mA), and shutdown (A1=A0=0, 1.0mA). Each state scales output current proportionally - e.g., ±500mA at full power, ±100mA at idle - while preserving bandwidth and isolation. Logic thresholds are defined relative to +VS (e.g., min logic high = 3.3V at +VS = +6V), ensuring compatibility with standard 3.3V/5V GPIOs.
Can the OPA2674I-14DR drive 75Ω video loads, and what is its NTSC performance?
Yes, the OPA2674I-14DR drives 75Ω video loads directly, with tested NTSC performance of 0.03% differential gain (dG) and 0.01° differential phase (dP) at G = +2 and RL = 150Ω. When driving ten 15Ω parallel loads (simulating 10× 75Ω termination), it maintains <0.1%/0.1° dG/dP nonlinearity due to its high output current (±500mA) and low closed-loop output impedance (0.01Ω). This makes OPA2674I-14DR suitable for SD/HD video distribution without external buffers or transformers.
What is the maximum capacitive load the OPA2674I-14DR can drive stably?
The OPA2674I-14DR remains stable with capacitive loads up to 1nF when used with the recommended series resistor (RS) compensation network. For example, with RS = 133Ω and CL = 100pF, frequency response shows no peaking; at CL = 1nF, RS = 1kΩ is advised per Figure 10 in the datasheet. Without RS, instability occurs above ~100pF. This capability enables direct driving of long cables, LCD bias networks, or piezoelectric elements without external isolation stages - a key advantage over conventional voltage-feedback op amps.
Does the OPA2674I-14DR support differential (balanced) output configurations?
Yes, the OPA2674I-14DR supports true differential output configurations using both channels in a complementary pair. With GD = +9 (gain = 1 + 2×RF/RG), it achieves 220MHz large-signal bandwidth and <−90dBc 3rd-harmonic distortion at 500kHz with 4VPP differential swing into 70Ω. The matched channel characteristics - <−92dB crosstalk, <0.01° phase skew - ensure high common-mode rejection and low even-order distortion, making OPA2674I-14DR ideal for balanced line drivers in noise-sensitive DSL and instrumentation applications.
OPA2674I-14DR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- -
- Slew Rate:
- 2000V/µs
- Gain Bandwidth Product:
- 250 MHz
- -3db Bandwidth:
- 260 MHz
- Current - Input Bias:
- 10 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 18mA (x2 Channels)
- Current - Output / Channel:
- 500 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
OPA2674I-14DR FAQ
1.How can I place an order for OPA2674I-14DR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2674I-14DR 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 OPA2674I-14DR reliable?
The price and inventory of OPA2674I-14DR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2674I-14DR is usually 5 days.
3.What payment methods are accepted for OPA2674I-14DR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2674I-14DR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2674I-14DR?
OPA2674I-14DR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2674I-14DR 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 OPA2674I-14DR?
For technical support, including OPA2674I-14DR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2674I-14DR requirements.
6.How does Aetrix verify that OPA2674I-14DR is sourced from the original manufacturer or authorized distributors?
All OPA2674I-14DR 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 OPA2674I-14DR meets industry standards.
7.What is the process for return or replacement of OPA2674I-14DR?
All OPA2674I-14DR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2674I-14DR, 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 OPA2674I-14DR part is unused and in its original packaging.
Return procedure for OPA2674I-14DR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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