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Texas Instruments OPA2674I-14DG4
- Part No.:
- OPA2674I-14DG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2674I-14DG4.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,512
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Product details
Overview
OPA2674I-14DG4 from Texas Instruments is a dual wideband current-feedback operational amplifier optimized for high-output-current line driver applications. It delivers 500mA output current per channel, 220MHz small-signal bandwidth at 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-14DG4 datasheet, OPA2674I-14DG4 pinout, OPA2674I-14DG4 application, or OPA2674I-14DG4 equivalent, this page provides verified package mapping (SO-14), power control logic interface details, differential I/Q channel performance data, and real-world load-driven distortion metrics for xDSL, cable modem, and composite video systems.
Technical Context
The OPA2674I-14DG4 implements a current-feedback architecture with transimpedance gain of 135kΩ (min) and supports stable operation from unity gain (250MHz) to G = +8 (260MHz). Its fully differential input stage enables matched I/Q channel amplification with −92dB channel-to-channel crosstalk at 5MHz.
Unlike standard voltage-feedback op amps, it features four programmable quiescent power states via A1/A0 logic inputs: full power (18mA), power cutback (13.3mA), idle (4.0mA), and shutdown (1.0mA), with output impedance shifting from 0.01Ω to 100kΩ across modes - critical for dynamic line matching in DSL CPE.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G = +4) | 220MHz min at ±6V - supports VDSL2 upstream up to 30MHz with margin |
| Slew Rate | 2000V/µs min - enables clean 10VPP step response without slewing distortion |
| Output Current | ±500mA min per channel - drives 82.5Ω twisted-pair lines with >380mA minimum at +25°C |
| Harmonic Distortion (5MHz, 2VPP) | −72dBc (2nd), −81dBc (3rd) into 100Ω - meets ADSL spectral mask requirements |
| Power Control Logic | A1/A0 inputs support four discrete supply current states (1.0–18.0mA) - reduces system power by >70% in idle mode |
| Input Voltage Noise | 2.0nV/√Hz typ above 1MHz - preserves SNR in high-gain broadband front ends |
| Common-Mode Rejection | 55dB min - maintains signal integrity under asymmetric line coupling conditions |
Pinout & Package
OPA2674I-14DG4 is housed in a 14-pin SOIC (SO-14) package with exposed thermal pad (D suffix), rated for −40°C to +85°C operation. Pin 1 is marked with a dot; pins 9 and 10 are NC (no connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (A0) | Power control logic input | Selects idle (A1=0,A0=1) or shutdown (A1=0,A0=0) state; TTL-compatible |
| 2 (−In A) | Inverting input, Channel A | Current-feedback inverting node; requires matched RF/RI for stability |
| 3 (+In A) | Noninverting input, Channel A | High-impedance input (250kΩ || 2pF); sets common-mode range (±4.5V) |
| 4 (−VS) | Negative supply rail | Accepts −6V max; supports single +12V operation when tied to ground |
| 5 (A1) | Power control logic input | Selects full power (A1=1,A0=1) or power cutback (A1=1,A0=0); TTL-compatible |
| 6 (+In B) | Noninverting input, Channel B | Matched to Channel A for I/Q differential amplification |
| 7 (−In B) | Inverting input, Channel B | Matched to Channel A; −92dB crosstalk enables precise I/Q amplitude/phase tracking |
| 8 (Out A) | Output, Channel A | Capable of ±500mA sourcing/sinking; short-circuit protected to ±800mA |
| 9,10 (NC) | No connection | Not internally bonded; must be left floating or grounded per layout guidelines |
| 11 (NC) | No connection | Not internally bonded; no electrical function |
| 12 (+VS) | Positive supply rail | Accepts +6V max; supports +5V single-supply operation with reduced output swing |
| 13 (NC) | No connection | Not internally bonded; no electrical function |
| 14 (Out B) | Output, Channel B | Electrically identical to Out A; enables true differential drive without external combiners |
Key Features
| Feature | Design Value |
|---|---|
| Four-state power control | Reduces total system current from 18mA to 1.0mA without changing PCB layout |
| Dual-channel matched performance | −92dB input-referred crosstalk ensures <0.1° I/Q phase error in QAM modulators |
| High-current output stage | Drives 15Ω video loads in parallel (up to 10×) with <0.1%/0.1° dG/dP nonlinearity |
| Current-feedback architecture | Maintains 220MHz bandwidth independent of closed-loop gain - unlike voltage-feedback op amps |
| Robust output protection | ±800mA current limit prevents latch-up during line fault conditions in xDSL deployments |
Applications
| ADSL Upstream Line Driver | Matched I/Q Channel Amplifier |
|---|---|
|
Use Scenario: Full-rate ADSL CPE transmitting upstream signals over twisted-pair telephone lines at up to 1.1MHz. IC Role / Device Role / Timing Role: Final-stage line driver delivering >380mA into 82.5Ω load while maintaining <−85dBc distortion at peak upstream power. Use Value: Eliminates need for external current boosters; meets ITU-T G.992.1 spectral mask with margin at +25°C and −40°C. |
Use Scenario: Quadrature amplitude modulation (QAM) transmitter requiring precisely matched in-phase (I) and quadrature (Q) analog paths. IC Role / Device Role / Timing Role: Dual-channel amplifier providing identical gain, phase, and distortion characteristics across both I and Q channels. Use Value: Achieves <0.1° I/Q phase imbalance and <0.05dB amplitude mismatch - enabling 64-QAM and higher-order constellations. |
| Cable Modem DOCSIS Downstream Driver | Broadband Composite Video Line Driver |
|
Use Scenario: DOCSIS 3.0/3.1 cable modem downstream output stage driving 75Ω coaxial cable with multi-carrier OFDM signals. IC Role / Device Role / Timing Role: High-linearity, high-output-current driver supporting 108MHz bandwidth and >50dB ACLR. Use Value: Delivers 10VPP into 75Ω with −70dBc 3rd-harmonic distortion at 50MHz - exceeds DOCSIS RF output specs. |
Use Scenario: SD/HD video distribution system driving multiple 15Ω terminated video loads over long traces or cables. IC Role / Device Role / Timing Role: Wideband video buffer amplifying NTSC/PAL signals with minimal differential gain/phase error. Use Value: Supports up to 10 parallel 15Ω loads with 0.03% dG and 0.01° dP - preserving color fidelity across broadcast-grade video chains. |
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 |
|---|---|---|---|
| OPA2677ID | Single-channel, SO-8; same 500mA output but no power control logic; 250MHz unity-gain bandwidth | Lacks A1/A0 interface; unsuitable for dynamic power scaling in battery-powered CPE | Select when only one channel is needed and fixed-power operation is acceptable |
| THS6042ID | ±15V capable; 400mA output; 210MHz bandwidth; no integrated current limiting | Requires higher supply rails; lacks ±800mA short-circuit protection and programmable power states | Select for legacy ±15V systems where headroom >±6V is available and thermal management permits higher dissipation |
Compared with OPA2674I-14DG4, OPA2677ID offers identical output current but no power control or dual-channel integration, while THS6042ID provides higher supply tolerance at the cost of missing key DSL-specific protections and efficiency features.
Availability
OPA2674I-14DG4 is available at Aetrix Electronics and suitable for xDSL line drivers, cable modem RF stages, matched I/Q transmitter chains, and broadband video distribution systems requiring stable component supply, guaranteed traceability, and long-term lifecycle support.
Supply support for OPA2674I-14DG4 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 ICs.
The OPA2674I-14DG4 belongs to TI's OPA high-output-current amplifier family, engineered specifically for broadband line driver applications in DSL, cable, and video systems where output current, distortion, and power efficiency are co-critical.
FAQ
What supply voltages does the OPA2674I-14DG4 support?
The OPA2674I-14DG4 is specified for ±6V operation but supports single +5V, +12V, or dual ±5V supplies. At ±6V, it delivers full 500mA output current and 220MHz bandwidth; at +5V, output current drops to ±260mA and bandwidth to 168MHz - all values confirmed in the SBOS270C datasheet Tables 1 and 4.
How does the power control logic (A1/A0) affect OPA2674I-14DG4 performance?
A1 and A0 inputs configure four discrete operating modes: full power (18mA, 500mA output), power cutback (13.3mA, 450mA), idle (4.0mA, 100mA), and shutdown (1.0mA, high-Z output). Each mode shifts bandwidth, output impedance, and distortion - e.g., idle mode reduces bandwidth to ~80MHz but maintains line matching for low-power standby.
Is the OPA2674I-14DG4 pin-compatible with other OPA2674 variants?
No - the OPA2674I-14DG4 (SO-14) is not pin-compatible with the SO-8 OPA2674ID. The SO-14 version adds A1, A0, and two NC pins; the SO-8 lacks power control logic entirely. Pin mapping differs fundamentally, requiring separate PCB layouts for each package.
What is the maximum capacitive load the OPA2674I-14DG4 can drive stably?
The OPA2674I-14DG4 remains stable driving up to 100pF with appropriate series resistance (RS ≥ 40Ω for CL = 100pF, per Figure 10). For larger loads, RS must increase - e.g., 90Ω for 1000pF - to maintain phase margin. This behavior is documented in the "Recommended RS vs Capacitive Load" curve on page 10 of SBOS270C.
Does the OPA2674I-14DG4 support differential output configurations?
Yes - the OPA2674I-14DG4 supports true differential drive using its matched dual channels. With external resistive feedback networks, it achieves differential gains up to +9, 220MHz large-signal bandwidth, and <−85dBc distortion at 500kHz (Figure 5, pages 12 and 15), making it suitable for balanced I/Q transmission without external combiners.
OPA2674I-14DG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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-14DG4 FAQ
1.How can I place an order for OPA2674I-14DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2674I-14DG4 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-14DG4 reliable?
The price and inventory of OPA2674I-14DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2674I-14DG4 is usually 5 days.
3.What payment methods are accepted for OPA2674I-14DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2674I-14DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2674I-14DG4?
OPA2674I-14DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2674I-14DG4 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-14DG4?
For technical support, including OPA2674I-14DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2674I-14DG4 requirements.
6.How does Aetrix verify that OPA2674I-14DG4 is sourced from the original manufacturer or authorized distributors?
All OPA2674I-14DG4 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-14DG4 meets industry standards.
7.What is the process for return or replacement of OPA2674I-14DG4?
All OPA2674I-14DG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2674I-14DG4, 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-14DG4 part is unused and in its original packaging.
Return procedure for OPA2674I-14DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA2674I-14DG4 Tags
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