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Texas Instruments OPA2695IRGTRG4
- Part No.:
- OPA2695IRGTRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
OPA2695IRGTRG4.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,372
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Product details
Overview
OPA2695IRGTRG4 from Texas Instruments is a dual ultra-wideband current-feedback operational amplifier with disable control, delivering 850MHz gain=+2V/V bandwidth, 2900V/µs slew rate, ±4.1V output swing, >40dBm differential 3rd-order intercept (f<140MHz), and 129mW/channel power at ±5V. It serves as a high-fidelity differential ADC driver in IF signal chains.
For engineers reviewing the OPA2695IRGTRG4 datasheet, OPA2695IRGTRG4 pinout, OPA2695IRGTRG4 application, or OPA2695IRGTRG4 equivalent, key selection criteria include differential harmonic distortion performance at 10–100MHz, disable timing (25ns enable / 1µs disable), QFN-16 thermal resistance (55°C/W), and symmetrical input/output path layout for balanced PCB routing.
Technical Context
The OPA2695IRGTRG4 implements a current-feedback architecture with low-impedance inverting input (29Ω typ) and high-impedance noninverting input (280kΩ||1.2pF), enabling stable high-gain operation up to +16V/V. Its transimpedance open-loop gain is 85kΩ min at +25°C, supporting precise gain-setting with external feedback resistors.
Each channel features independent disable control (DIS A/DIS B pins), reducing supply current to <385µA/channel when pulled low. The device operates from ±1.75V to ±6V dual supplies or +3.5V to +12V single supply, with CMRR ≥50dB over –40°C to +85°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=+2V/V) | 850MHz - enables baseband-to-IF amplification without gain peaking in 75MHz NTSC video or 100MHz IF sampling paths |
| Slew rate | 2900V/µs - supports clean 4VPP step response with ≤1.0ns rise/fall time for fast-settling ADC front-ends |
| Output voltage swing | ±4.1V (no load) - delivers full-scale drive into 100Ω loads while maintaining linearity for 16-bit ADCs |
| Differential 3rd-order intercept | >40dBm (f<140MHz, 800Ω) - ensures minimal intermodulation distortion in multi-tone RF receiver IF stages |
| Disable supply current | <385µA/channel - reduces system standby power by 98% versus active mode (25.8mA), critical for portable instrumentation |
| Input voltage noise | 1.8nV/√Hz (f>1MHz) - preserves SNR in wideband signal chains where noise dominates dynamic range |
| Thermal resistance θJA | 55°C/W (QFN-16) - allows sustained 2×129mW operation at ambient ≤75°C without heatsinking |
Pinout & Package
OPA2695IRGTRG4 is housed in a 4mm × 4mm QFN-16 package with exposed thermal pad (PowerPAD™), optimized for symmetrical differential routing and low-inductance ground return. Pin 1 is marked via top-side dot; pins 5–8 and 9–12 form matched input/output pairs for dual-channel operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | No-connect (NC) | Reserved for future use; must be left floating or tied to GND per layout guidelines |
| 5, 10 | Inverting input (–IN A, –IN B) | Low-impedance (29Ω) nodes requiring short, matched traces to feedback resistors for stability |
| 6, 11 | Noninverting input (+IN A, +IN B) | High-impedance (280kΩ||1.2pF) inputs; sensitive to parasitic capacitance-keep traces short and guard-ringed |
| 7, 15 | Negative supply (–VS) | Common return for both channels; connect directly to low-impedance ground plane under thermal pad |
| 8, 14 | Positive supply (+VS) | Supply rail for both amplifiers; decouple with 100nF ceramic + 10µF tantalum within 5mm |
| 9, 16 | Disable control (DIS A, DIS B) | Active-low logic inputs; require ≥3.3V to enable, ≤1.5V to disable; 75µA max input bias |
| 12, 13 | Output (OUT A, OUT B) | Capable of ±120mA sourcing/sinking; route differentially with controlled 100Ω impedance to ADC inputs |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel symmetry | Matched pinout and electrical specs between Channel A/B enable true differential signaling without skew-induced common-mode error |
| Ultra-fast enable/disable | 25ns enable and 1µs disable times allow precise gating of signal bursts in time-domain sampling systems |
| Low-glitch switching | ±100mV turn-on and ±20mV turn-off glitches prevent ADC saturation during power-state transitions |
| Single-supply flexibility | Operates from +3.5V to +12V, enabling direct interface with 3.3V/5V logic and mixed-voltage FPGA-based receivers |
| Thermal-enhanced QFN | 55°C/W θJA and exposed thermal pad support continuous 250mW dissipation without derating at 70°C ambient |
Applications
| High-Speed Data Acquisition | Portable Spectrum Analyzers |
|---|---|
Use Scenario: Driving dual-input 14-bit, 105MSPS ADC in LTE baseband receiver with 70MHz IF input. IC Role / Device Role / Timing Role: Differential IF amplifier providing gain, bandwidth, and distortion-limited signal conditioning before digitization. Use Value: 850MHz G=+2V/V bandwidth and –82dBc 3rd-harmonic distortion at 10MHz ensure ENOB ≥12.3 bits across Nyquist zone. | Use Scenario: Battery-powered handheld RF analyzer requiring low-power IF amplification and rapid channel switching. IC Role / Device Role / Timing Role: Dual-channel gain block with independent disable control for power-gated spectrum sweeps. Use Value: 0.5mW/channel disabled power and 25ns enable time reduce average system power by 73% during idle intervals. |
| Broadband Video Line Drivers | Active Filter Building Blocks |
Use Scenario: Driving 75Ω coaxial cables in HD-SDI distribution amplifiers with SMPTE 259M compliance. IC Role / Device Role / Timing Role: Unity-gain stable video buffer with DC-coupled output and <0.01% differential gain error. Use Value: ±4.1V swing and –0.01% differential gain meet SMPTE 259M amplitude accuracy requirements at 1.485Gbps. | Use Scenario: Configuring 5th-order elliptic low-pass filter for anti-aliasing with 100MHz cutoff and steep roll-off. IC Role / Device Role / Timing Role: High-Z input / low-Z output gain stage enabling cascaded filter sections without loading effects. Use Value: 29Ω inverting input impedance and 0.04Ω closed-loop output impedance maintain filter pole accuracy across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2694IDR | Lower power (90mW/channel), reduced bandwidth (G=+2V/V: 500MHz), no disable function | Lacks channel disable and thermal performance; suitable only for always-on fixed-gain stages | Select when power budget is tighter than 129mW and disable control is unnecessary |
| LMH6723MA/NOPB | Single-channel, higher input bias current (±120µA), no disable, SO-8 only | Requires two devices for dual-channel operation; lacks QFN thermal performance and disable timing specs | Choose for legacy SO-8 footprint compatibility where dual-channel integration is not required |
Compared with OPA2694IDR and LMH6723MA/NOPB, the OPA2695IRGTRG4 uniquely combines dual-channel integration, sub-µs disable control, QFN thermal efficiency, and >40dBm IP3-making it the only option for portable, power-gated, high-dynamic-range IF amplifiers.
Availability
OPA2695IRGTRG4 is available at Aetrix Electronics and suitable for high-speed data acquisition, portable spectrum analyzers, broadband video line drivers, and active filter building blocks requiring stable component supply across industrial temperature ranges.
Supply support for OPA2695IRGTRG4 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 op amps and precision signal chain solutions.
The OPA2695IRGTRG4 belongs to TI's ultra-wideband current-feedback op amp product line, engineered specifically for demanding IF/RF receiver front-ends where bandwidth, distortion, and power efficiency must coexist.
FAQ
What is the maximum small-signal bandwidth of OPA2695IRGTRG4 at G=+2V/V?
The OPA2695IRGTRG4 achieves 850MHz small-signal bandwidth at G=+2V/V with RF = 511Ω and ±5V supplies. This is measured at 0.2VPP output and represents the –3dB point where gain drops 3dB from nominal. Bandwidth decreases predictably with higher gains: 450MHz at G=+8V/V and 350MHz at G=+16V/V.
Does OPA2695IRGTRG4 support single-supply operation?
Yes, OPA2695IRGTRG4 operates from a single +3.5V to +12V supply. At +5V, it delivers 700MHz bandwidth (G=+2V/V), ±4.0V output swing (no load), and maintains CMRR ≥54dB. Input common-mode range extends from 1.7V to 3.3V, allowing direct interfacing with 3.3V logic and ADC reference midpoints.
How does the disable function work on OPA2695IRGTRG4?
The OPA2695IRGTRG4 uses active-low disable pins (DIS A and DIS B). Pulling either pin below 1.5V (max) disables its respective channel, reducing quiescent current to <385µA. Enable occurs when voltage rises above 3.3V (min); enable time is 25ns, disable time is 1µs. Both channels can be controlled independently or tied together.
What is the thermal resistance (θJA) of OPA2695IRGTRG4?
The OPA2695IRGTRG4 in QFN-16 (RGT) package has a junction-to-ambient thermal resistance of 55°C/W. This value assumes standard JEDEC 2-layer board conditions with soldered thermal pad. With proper PCB copper pour under the exposed pad, the device sustains continuous 250mW dissipation at 70°C ambient without thermal shutdown.
Can OPA2695IRGTRG4 drive 100Ω differential loads directly?
Yes, OPA2695IRGTRG4 drives 100Ω differential loads with ±3.9V swing (min) and maintains –82dBc 3rd-harmonic distortion at 10MHz. Its 0.04Ω closed-loop output impedance ensures minimal gain error and phase mismatch. For optimal performance, use symmetric 50Ω series termination at each output and match trace lengths to within 100µm.
OPA2695IRGTRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 2
- Output Type:
- Differential
- Slew Rate:
- 2900V/µs
- Gain Bandwidth Product:
- 1.1 GHz
- -3db Bandwidth:
- 1.1 GHz
- Current - Input Bias:
- 20 µA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 25.8mA (x2 Channels)
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 3.5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-VQFN (3x3)
OPA2695IRGTRG4 FAQ
1.How can I place an order for OPA2695IRGTRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2695IRGTRG4 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 OPA2695IRGTRG4 reliable?
The price and inventory of OPA2695IRGTRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2695IRGTRG4 is usually 5 days.
3.What payment methods are accepted for OPA2695IRGTRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2695IRGTRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2695IRGTRG4?
OPA2695IRGTRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2695IRGTRG4 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 OPA2695IRGTRG4?
For technical support, including OPA2695IRGTRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2695IRGTRG4 requirements.
6.How does Aetrix verify that OPA2695IRGTRG4 is sourced from the original manufacturer or authorized distributors?
All OPA2695IRGTRG4 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 OPA2695IRGTRG4 meets industry standards.
7.What is the process for return or replacement of OPA2695IRGTRG4?
All OPA2695IRGTRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2695IRGTRG4, 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 OPA2695IRGTRG4 part is unused and in its original packaging.
Return procedure for OPA2695IRGTRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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