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Texas Instruments OPA2674I-14D
- Part No.:
- OPA2674I-14D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2674I-14D.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:293
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Product details
Overview
OPA2674I-14D from Texas Instruments is a dual wideband current-feedback operational amplifier optimized for high-output-current line driver applications. It delivers ±500mA output current, 220MHz small-signal bandwidth (G = +4), 2000V/µs slew rate, and 10VPP output swing on ±6V supplies - enabling full-rate ADSL upstream drivers and broadband video line driving with < −85dBc harmonic distortion at peak power.
For engineers reviewing the OPA2674I-14D datasheet, OPA2674I-14D pinout, OPA2674I-14D application, or OPA2674I-14D equivalent, this device's SO-14 package with A0/A1 power control logic, differential I/Q channel support, and ±800mA short-circuit current limit are critical selection criteria in xDSL, cable modem, and high-capacitive-load video systems.
Technical Context
The OPA2674I-14D uses current-feedback architecture with transimpedance gain of 135kΩ (±6V), supporting stable operation at gains ≥ +1. Its dual-channel design features independent input stages and shared thermal management, with bandwidth scaling inversely with closed-loop gain (e.g., 260MHz at G = +8, 250MHz at G = +1).
Power control is implemented via two TTL-compatible logic inputs (A0, A1) enabling four quiescent states: full power (18mA), power cutback (14.8mA), idle (5.3mA), and shutdown (1.5mA), each with distinct output current limits (±500mA to ±100mA) and output impedance (0.01Ω to 100kΩ).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 220MHz at G = +4 (±6V); enables VDSL line driver compliance up to 30MHz upstream spectrum. |
| Slew Rate | 2000V/µs (±6V); supports fast transient response for multi-tone ADSL signals without slewing distortion. |
| Output Current | ±500mA min (−40°C to +85°C); drives 82.5Ω twisted-pair lines with >380mA minimum for full-rate ADSL CPE. |
| Harmonic Distortion | −81dBc 3rd-harmonic (5MHz, 2VPP, RL ≥ 500Ω); meets stringent upstream spectral mask requirements. |
| Supply Range | ±6V (spec), supports +5V single-supply operation with 168MHz bandwidth and ±260mA output. |
| Power Control Logic | A0/A1 inputs select four quiescent states; enables dynamic power scaling in burst-mode DSL transmission. |
| Input Voltage Noise | 2.0nV/√Hz (>1MHz); low-noise performance preserves SNR in high-gain receive-path amplifiers. |
Pinout & Package
OPA2674I-14D is housed in a 14-pin SOIC (SO-14) package with exposed pad for thermal enhancement. Pinout includes dual independent amplifier channels plus dedicated power control logic and no-connect terminals.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | −In A | Inverting input for Channel A; requires matched feedback network for stable current-feedback operation. |
| 2 | +In A | Noninverting input for Channel A; high-impedance node (250kΩ || 2pF) for precision biasing. |
| 3 | A0 | Power control logic input (TTL-compatible); selects idle/shutdown state when A1 = 0. |
| 4 | −VS | Negative supply rail; must be connected to ground or negative voltage per operating mode. |
| 5 | A1 | Power control logic input (TTL-compatible); selects full-power/cutback when A0 = 1. |
| 6 | +In B | Noninverting input for Channel B; electrically isolated from Channel A for differential I/Q use. |
| 7 | −In B | Inverting input for Channel B; supports independent gain configuration from Channel A. |
| 8 | Out A | Amplifier A output; capable of ±500mA sourcing/sinking with 0.01Ω closed-loop impedance. |
| 9 | NC | No connection; internal die bond wire unused; must remain unconnected on PCB. |
| 10 | NC | No connection; internal die bond wire unused; must remain unconnected on PCB. |
| 11 | +VS | Positive supply rail; supports ±6V or +5V operation; thermal pad tied to ground for cooling. |
| 12 | NC | No connection; internal die bond wire unused; must remain unconnected on PCB. |
| 13 | NC | No connection; internal die bond wire unused; must remain unconnected on PCB. |
| 14 | Out B | Amplifier B output; fully independent of Out A; enables matched I/Q channel driving without crosstalk (−92dB). |
Key Features
| Feature | Design Value |
|---|---|
| Four-state power control | A0/A1 logic enables system-level power optimization: full power (18mA), cutback (14.8mA), idle (5.3mA), shutdown (1.5mA). |
| High-current output stage | ±500mA output with ±800mA short-circuit limit ensures robust drive into 75Ω–100Ω line impedances under fault conditions. |
| Differential I/Q channel matching | Channel-to-channel crosstalk < −92dB supports precise quadrature signal integrity in RF front-ends and modems. |
| Low-distortion video driving | 0.03% NTSC differential gain / 0.01° phase error enables 10× parallel 15Ω video load driving with < 0.1%/0.1° nonlinearity. |
| Single-supply compatibility | Operates on +5V with 168MHz bandwidth and ±260mA output, simplifying power architecture in cost-sensitive CPE designs. |
Applications
| ADSL Upstream Driver | xDSL Line Driver |
|---|---|
|
Use Scenario: Full-rate ADSL CPE transmitting upstream data over twisted-pair telephone lines. IC Role / Device Role / Timing Role: Dual-channel line driver delivering differential I/Q signals to hybrid coupler with >380mA peak current. Use Value: −85dBc distortion at peak upstream power meets ITU-T G.992.1 spectral mask; 220MHz bandwidth supports 1.1MHz tone spacing. |
Use Scenario: VDSL2/ADSL2+ line card in DSLAM or customer premises equipment. IC Role / Device Role / Timing Role: High-speed current-feedback amplifier driving 100Ω line impedance with programmable power states. Use Value: Four-quiescent-state control reduces average power by >60% during idle periods while maintaining line impedance match. |
| Cable Modem Driver | Broadband Video Distribution |
|
Use Scenario: DOCSIS-compliant cable modem transmitting upstream RF signals over coaxial plant. IC Role / Device Role / Timing Role: Wideband driver amplifying QAM-modulated signals from DAC to upstream filter and PA stage. Use Value: 2000V/µs slew rate prevents symbol distortion across 5–65MHz upstream band; ±500mA output sustains 24dBm launch power. |
Use Scenario: Broadcast video distribution to multiple monitors or set-top boxes over 75Ω coax. IC Role / Device Role / Timing Role: Composite video line driver supporting NTSC/PAL with dG/dP correction. Use Value: 0.03% differential gain / 0.01° phase error enables 10× parallel 15Ω loads without visible color shift or timing jitter. |
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 |
|---|---|---|---|
| OPA2677 | Single-channel, SO-8 package; no power control logic; 250MHz bandwidth (G = +1), ±400mA output. | Lacks dual-channel and A0/A1 power scaling; suitable only for single-ended or non-burst-mode line drivers. | Select OPA2677 only when dual-channel operation or dynamic power control is unnecessary and board space is constrained. |
| THS6042 | ±15V-rated dual op amp; 210MHz bandwidth (G = +2); ±350mA output; no integrated power control. | Requires higher supply voltage; lacks SO-14 power control pins; higher quiescent current (24mA vs 18mA). | Choose THS6042 only for legacy ±15V systems where OPA2674I-14D's +12V operation or power states are incompatible. |
Compared with OPA2677 and THS6042, the OPA2674I-14D uniquely combines dual-channel integration, SO-14 power control logic, and ±500mA output in a +12V-compatible package - making it the only option supporting burst-mode ADSL upstream with real-time power state switching and matched I/Q channel performance.
Availability
OPA2674I-14D is available at Aetrix Electronics and suitable for xDSL line drivers, cable modem upstream amplifiers, and broadband video distribution systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA2674I-14D 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 solutions, with decades of expertise in high-speed amplifiers and communications infrastructure ICs.
The OPA2674I-14D belongs to TI's OPA high-output-current op amp family, designed specifically for broadband line driver applications in DSL, cable, and video systems where distortion, power efficiency, and channel matching are critical.
FAQ
What supply voltages does the OPA2674I-14D support?
The OPA2674I-14D is specified for ±6V operation but supports +5V single-supply mode with 168MHz bandwidth and ±260mA output. It also operates on ±5V and can tolerate up to ±6.3V maximum. The device's supply-voltage-independent biasing enables stable performance across these configurations, and the OPA2674I-14D datasheet provides full electrical characteristics for each condition.
How does the A0/A1 power control logic work on the OPA2674I-14D?
The OPA2674I-14D uses two TTL-compatible logic inputs (A0, A1) to select four quiescent states: full power (A1=A0=1, 18mA), power cutback (A1=1,A0=0, 14.8mA), idle (A1=0,A0=1, 5.3mA), and shutdown (A1=A0=0, 1.5mA). Each state sets distinct output current limits and output impedance - for example, shutdown yields 100kΩ isolation. This logic is exclusive to the SO-14 package version OPA2674I-14D.
What is the maximum capacitive load the OPA2674I-14D can drive stably?
The OPA2674I-14D can drive up to 100pF capacitive load with minimal peaking when compensated with an external series resistor (RS). The recommended RS value is 70Ω for 10pF, 40Ω for 47pF, and 20Ω for 100pF. Stability is confirmed in the OPA2674I-14D datasheet Figure 10, which shows flat frequency response up to 100MHz with CL = 100pF and RS = 20Ω.
Does the OPA2674I-14D support differential I/Q channel operation?
Yes - the OPA2674I-14D's dual independent amplifiers provide matched gain, phase, and distortion performance essential for I/Q signal paths. Channel-to-channel crosstalk is −92dB at 5MHz, and differential distortion is characterized in the OPA2674I-14D datasheet (Figure 12) with < −85dBc 2nd/3rd harmonics at 500kHz, confirming suitability for quadrature modulation in DSL and RF applications.
What thermal considerations apply to the OPA2674I-14D in continuous high-current operation?
The OPA2674I-14D has a junction-to-ambient thermal resistance (θJA) of 100°C/W in SO-14 package. At ±500mA output into 100Ω with ±6V supplies, power dissipation exceeds 1W per channel - requiring adequate copper pour, thermal vias to inner layers, and airflow. The OPA2674I-14D datasheet specifies absolute max junction temperature of +150°C and recommends derating above +85°C ambient.
OPA2674I-14D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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-14D FAQ
1.How can I place an order for OPA2674I-14D through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2674I-14D 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-14D reliable?
The price and inventory of OPA2674I-14D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2674I-14D is usually 5 days.
3.What payment methods are accepted for OPA2674I-14D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2674I-14D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2674I-14D?
OPA2674I-14D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2674I-14D 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-14D?
For technical support, including OPA2674I-14D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2674I-14D requirements.
6.How does Aetrix verify that OPA2674I-14D is sourced from the original manufacturer or authorized distributors?
All OPA2674I-14D 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-14D meets industry standards.
7.What is the process for return or replacement of OPA2674I-14D?
All OPA2674I-14D units undergo pre-shipment inspection (PSI). If there is an issue with OPA2674I-14D, 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-14D part is unused and in its original packaging.
Return procedure for OPA2674I-14D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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