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Texas Instruments OPA2614IDG4
- Part No.:
- OPA2614IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2614IDG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,856
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Product details
Overview
OPA2614IDG4 from Texas Instruments is a dual, high-speed, voltage-feedback operational amplifier optimized for xDSL differential line driving and precision baseband I/Q amplification. It delivers 1.8nV/√Hz input noise, 290MHz gain-bandwidth product, ±350mA output current, ±0.2mV input offset voltage, and operates from ±2.5V to ±6V or +5V to +12V supplies - enabling robust twisted-pair line drive with low harmonic distortion in differential configurations.
For engineers reviewing the OPA2614IDG4 datasheet, OPA2614IDG4 pinout, OPA2614IDG4 application, or OPA2614IDG4 equivalent, this page provides verified specifications, SO-8 package layout, real-world use cases in xDSL and ADC driver systems, and validated alternative parts for supply-voltage-flexible, low-noise, high-output-current amplifier selection.
Technical Context
The OPA2614IDG4 employs a wideband voltage-feedback architecture with a linear, high-current output stage delivering >280mA sourcing/sinking capability while maintaining low crossover distortion. Its biasing is supply-voltage independent, supporting stable operation across ±2.5V to ±6V and single +5V to +12V rails.
It achieves ≤−80dBc 2nd-harmonic distortion at 1MHz with 2VPP differential output into ≥500Ω loads, and supports DC-coupled or AC-coupled configurations - including noninverting/inverting single-ended and fully differential topologies using matched external resistors (e.g., RF = 453Ω, RG = 301Ω for GD = +8).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Noise Voltage | 1.8nV/√Hz - enables high-dynamic-range signal conditioning in 16-bit ADC drivers and baseband I/Q receivers. |
| Gain-Bandwidth Product | 290MHz - supports stable closed-loop gains up to +20 while preserving bandwidth for broadband line driving. |
| Output Current | ±350mA - drives heavy twisted-pair loads (e.g., 100Ω differential) without clipping or thermal shutdown. |
| Input Offset Voltage | ±0.2mV - ensures minimal DC error in precision gain stages and transimpedance amplifiers. |
| Supply Range | Single +5V to +12V or dual ±2.5V to ±6V - allows flexible integration in legacy and modern DSLAM, CPE, and instrumentation designs. |
| Slew Rate | 145V/µs - sustains fast transient response for 2VPP signals up to 42MHz large-signal bandwidth. |
| Harmonic Distortion | ≤−87dBc (3rd), ≤−92dBc (2nd) at 1MHz - meets stringent spectral purity requirements in xDSL upstream/downstream channels. |
Pinout & Package
OPA2614IDG4 is housed in an SO-8 (D) surface-mount package with exposed pad for thermal performance. Pinout follows standard dual op amp configuration with independent inputs/outputs per channel and shared power rails.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | +VS | Positive supply rail - accepts +5V to +12V (single) or +2.5V to +6V (dual supply system). |
| 2 | Out B | Channel B output - delivers ±350mA into 100Ω load; requires external 50Ω series resistor for 50Ω system matching. |
| 3 | −In B | Inverting input of Channel B - high-impedance node (7MΩ || 1.3pF); used with RG/RF for precise gain setting. |
| 4 | +In B | Noninverting input of Channel B - same impedance as −In B; referenced to mid-supply in single-supply AC-coupled designs. |
| 5 | Out A | Channel A output - electrically identical to Out B; supports independent or interleaved differential signaling. |
| 6 | −In A | Inverting input of Channel A - matches Channel B; enables true differential pair configuration with matched feedback networks. |
| 7 | +In A | Noninverting input of Channel A - used for noninverting gain stages or common-mode bias reference in differential I/O. |
| 8 | −VS | Negative supply rail - accepts −2.5V to −6V (dual) or ground (single +5V operation). |
Key Features
| Feature | Design Value |
|---|---|
| Low-noise, high-output-current architecture | 1.8nV/√Hz input noise + ±350mA drive enables clean, high-fidelity xDSL line transmission without external boost stages. |
| Differential configuration support | Validated GD = +8 performance with <−80dBc distortion at 1MHz into 70Ω load - ideal for ADSL/VDSL differential line drivers. |
| Single-supply compatibility | Operates from +5V with 2.6VPP output swing and >20MHz bandwidth - eliminates need for negative rail in cost-sensitive CPE designs. |
| Supply-voltage-independent biasing | Maintains consistent quiescent current (6.0mA/ch) and distortion performance across full ±2.5V to ±6V range - simplifies multi-rail system design. |
| Low crossover distortion output stage | Delivers linear bipolar current delivery into midpoint-biased loads (e.g., 100Ω to VS/2), avoiding zero-crossing artifacts common in older wideband op amps. |
Applications
| xDSL Differential Line Drivers | 16-Bit ADC Drivers |
|---|---|
Use Scenario: Driving twisted-pair telephone lines in ADSL2+ and VDSL2 CPE modems with differential signaling over 0.1–30MHz band. IC Role / Device Role / Timing Role: Dual-channel differential line driver providing matched gain, phase, and distortion between channels to maintain signal integrity on long copper loops. Use Value: ≤−80dBc harmonic distortion at 1MHz and 290MHz GBW ensure compliance with ITU-T G.992.5/G.993.2 spectral masks and support >200Mbps downstream rates. | Use Scenario: Buffering and gain-setting stage before 16-bit SAR or sigma-delta ADCs in communications test equipment and base station receivers. IC Role / Device Role / Timing Role: Precision, low-noise, high-slew-rate driver delivering full-scale analog input with minimal added noise or settling error. Use Value: 1.8nV/√Hz input noise and 145V/µs slew rate preserve >14-bit dynamic range through 5MHz bandwidth - meeting ENOB requirements for high-resolution digitization. |
| Transimpedance Amplifiers | Precision Baseband I/Q Amplifiers |
Use Scenario: Converting photodiode or current-output sensor signals in optical line terminals and fiber-to-the-home receivers. IC Role / Device Role / Timing Role: Low-input-bias-current, high-gain transimpedance amplifier with stable phase margin into capacitive photodiode junctions. Use Value: ±6µA max input bias current and 1.8nV/√Hz noise enable sub-picoamp resolution with >100dB open-loop gain at DC - critical for low-light detection. | Use Scenario: Amplifying in-phase (I) and quadrature (Q) baseband signals in software-defined radios and LTE femtocells with tight channel matching. IC Role / Device Role / Timing Role: Matched dual-channel amplifier ensuring <0.1° phase mismatch and <0.01dB gain mismatch between I/Q paths. Use Value: −68dBc channel-to-channel crosstalk and ±0.2mV offset voltage support near-perfect I/Q balance for <−70dBc image rejection in direct-conversion architectures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-output-current, low-noise operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2691IDR | Current-feedback architecture; higher slew rate (3100V/µs) but higher input noise (2.1nV/√Hz); no internal current limiting. | Better for ultra-high-speed pulse amplification (>100MHz), less suitable for precision DC-coupled xDSL line driving due to bias current sensitivity. | Select OPA2691IDR only when bandwidth >500MHz and transient fidelity outweigh low-noise and DC accuracy requirements. |
| OPA2677U | Voltage-feedback like OPA2614IDG4; lower output current (±190mA); lower GBW (1.3GHz vs 290MHz); higher input offset (±1.5mV). | Targeted at RF IF amplification and active filter design where gain flatness >100MHz matters more than line-driving current. | Choose OPA2677U for wideband filtering or IF gain stages where 190mA drive suffices and 1.3GHz GBW enables steeper roll-off. |
Compared with OPA2614IDG4, OPA2691IDR trades noise and DC precision for raw speed in current-feedback topology, while OPA2677U offers higher GBW but reduced output drive and increased offset - making OPA2614IDG4 the optimal choice for xDSL line drivers requiring balanced noise, distortion, and current delivery.
Availability
OPA2614IDG4 is available at Aetrix Electronics and suitable for xDSL line driver modules, 16-bit data acquisition systems, and precision I/Q receiver front-ends requiring stable component supply across industrial temperature ranges (−40°C to +85°C).
Supply support for OPA2614IDG4 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-performance op amps and signal chain solutions.
The OPA2614IDG4 belongs to TI's OPAx614 family of wideband, high-output-current voltage-feedback op amps, designed specifically for xDSL line drivers and precision baseband amplification where low noise, low distortion, and robust output drive are critical.
FAQ
What is the maximum supply voltage for OPA2614IDG4?
The OPA2614IDG4 supports absolute maximum supply voltages of ±6.5V at −40°C to +85°C ambient, with recommended operating range up to ±6.3V. In single-supply mode, it operates from +5V to +12V, with tested performance validated at +5V and ±6V per the SBOS305D datasheet. Exceeding ±6.5V risks permanent damage.
Does OPA2614IDG4 support rail-to-rail input or output?
No, OPA2614IDG4 is not a rail-to-rail device. Its input common-mode range extends to ±4.7V on ±6V supplies (within 1.3V of rails), and output swing reaches ±4.9V into no load - approximately 1.1V from each rail. On +5V supply, output swings from 1.05V to 3.95V into 100Ω, leaving ~1.1V headroom at both ends.
Can OPA2614IDG4 be used in differential ADC driver configurations?
Yes, OPA2614IDG4 is explicitly characterized for differential configurations - Figure 5 in SBOS305D shows a noninverting differential I/O circuit achieving GD = +8 with RL = 70Ω. It delivers ≤−80dBc 2nd-harmonic distortion at 1MHz and maintains −68dBc channel crosstalk, making it suitable for driving fully differential 16-bit ADCs in communications receivers.
What is the thermal resistance (θJA) of OPA2614IDG4 in SO-8 package?
The OPA2614IDG4 in SO-8 (D) package has a typical junction-to-ambient thermal resistance (θJA) of 125°C/W, as specified in the Thermal Characteristics table of SBOS305D. This value assumes standard JEDEC 2-layer board conditions; actual θJA improves with PCB copper area and thermal vias under the exposed pad.
Is OPA2614IDG4 unity-gain stable?
No, OPA2614IDG4 is not unity-gain stable. The datasheet specifies minimum stable gain of +2 for noninverting configurations. Attempting unity-gain operation causes peaking and potential oscillation - confirmed by small-signal frequency response plots showing >6dB peaking at G = +2 and instability at G = +1.
OPA2614IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 2
- Output Type:
- Differential
- Slew Rate:
- 145V/µs
- Gain Bandwidth Product:
- 290 MHz
- -3db Bandwidth:
- 180 MHz
- Current - Input Bias:
- 6 µA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 12mA (x2 Channels)
- Current - Output / Channel:
- 350 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:
- 8-SOIC
OPA2614IDG4 FAQ
1.How can I place an order for OPA2614IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2614IDG4 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 OPA2614IDG4 reliable?
The price and inventory of OPA2614IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2614IDG4 is usually 5 days.
3.What payment methods are accepted for OPA2614IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2614IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2614IDG4?
OPA2614IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2614IDG4 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 OPA2614IDG4?
For technical support, including OPA2614IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2614IDG4 requirements.
6.How does Aetrix verify that OPA2614IDG4 is sourced from the original manufacturer or authorized distributors?
All OPA2614IDG4 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 OPA2614IDG4 meets industry standards.
7.What is the process for return or replacement of OPA2614IDG4?
All OPA2614IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2614IDG4, 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 OPA2614IDG4 part is unused and in its original packaging.
Return procedure for OPA2614IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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