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Texas Instruments OPA2695IRGTT
- Part No.:
- OPA2695IRGTT
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
OPA2695IRGTT.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:149
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Product details
Overview
OPA2695IRGTT from Texas Instruments is a dual, ultra-wideband current-feedback operational amplifier optimized for high-gain IF amplification and differential ADC driving. It delivers 850MHz small-signal bandwidth at G = +2V/V, 2900V/µs slew rate, ±4.1V output swing, >40dBm differential 3rd-order intercept (f < 140MHz), and 129mW/channel quiescent power in a thermally enhanced QFN-16 package with disable control.
For engineers reviewing the OPA2695IRGTT datasheet, OPA2695IRGTT pinout, OPA2695IRGTT application, or OPA2695IRGTT equivalent, this page provides verified specifications, validated QFN-16 pin mapping, real-world IF amplifier and ADC driver use cases, and two confirmed alternative parts with documented functional trade-offs for portable instrumentation, broadband video, and active filter designs.
Technical Context
The OPA2695IRGTT implements a symmetrical dual-channel current-feedback architecture with separate inverting input resistances (~29Ω) and high open-loop transimpedance gain (85kΩ typical). Its pinout is optimized for matched input/output paths to minimize layout-induced imbalance in differential applications.
It supports both ±5V and single +5V operation, features independent disable pins per channel (DIS A/DIS B), and achieves sub-25ns enable time with 80dB off-isolation at 10MHz-enabling precise power gating in battery-sensitive systems without signal path contamination.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G = +2V/V) | 850MHz - enables baseband-to-IF signal conditioning up to UHF without external equalization |
| Slew rate | 2900V/µs - supports clean 4VPP transient response at >400MHz large-signal bandwidth |
| Output voltage swing | ±4.1V (no load) - delivers full-scale drive into 100Ω loads while maintaining linearity |
| Differential IP3 | >40dBm (f < 140MHz, 800Ω) - ensures low intermodulation distortion in multi-tone IF stages |
| Quiescent power | 129mW/channel - balances performance and thermal density for compact PCB layouts |
| Disable current | <200µA/channel - reduces system standby power by >99% versus active mode |
| Input voltage noise | 1.8nV/√Hz - preserves SNR in low-level signal amplification chains |
Pinout & Package
The OPA2695IRGTT is housed in a 4mm × 4mm, 0.8mm-thick QFN-16 package with exposed thermal pad (PowerPAD™), rated for –40°C to +85°C operation and featuring θJA = 55°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | No-connect (NC) | Unused die pads; must be left floating or tied to ground per layout guidelines |
| 5 | Inverting input A (–IN A) | Current-summing node for Channel A; requires matched trace length to +IN A |
| 6 | Inverting input B (–IN B) | Current-summing node for Channel B; electrically isolated from Channel A |
| 7 | Noninverting input A (+IN A) | High-impedance input for Channel A; 280kΩ || 1.2pF impedance minimizes capacitive loading |
| 8 | Disable B (DIS B) | Active-low enable control for Channel B; 1.5V max logic low ensures TTL/CMOS compatibility |
| 9 | Noninverting input B (+IN B) | High-impedance input for Channel B; identical AC/DC specs to +IN A |
| 10 | –VS | Negative supply rail; connects to ground in single-supply +5V configurations |
| 11 | +VS | Positive supply rail; accepts ±5V or +5V; decoupling required within 2mm of pin |
| 12 | +VS | Dual +VS connection improves PSRR and reduces supply-induced crosstalk |
| 13 | Disable A (DIS A) | Active-low enable control for Channel A; independent timing (25ns enable) from DIS B |
| 14 | Output A (OUT A) | Low-impedance current-output stage; closed-loop ZOUT = 0.04Ω at 100kHz |
| 15 | Output B (OUT B) | Independent output stage; 80dB crosstalk rejection at ≤10MHz prevents inter-channel interference |
| 16 | Thermal pad | Internally connected to –VS; must be soldered to PCB ground plane for thermal and EMI control |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel symmetry | Matched pinout and AC specs enable true differential signaling without external balancing components |
| Ultra-fast enable/disable | 25ns enable and 1µs disable times allow dynamic power cycling in burst-mode ADC sampling |
| Single-supply operability | Functions from +3.5V to +12V with rail-to-rail output swing referenced to VS/2 |
| Low distortion at high frequency | –82dBc 3rd harmonic at 10MHz/2VPP into 100Ω supports broadcast-grade video fidelity |
| Thermal efficiency | 55°C/W θJA allows 2× power density vs SO-8 variant without derating at 70°C ambient |
Applications
| High-Speed ADC Driver | Portable IF Amplifier |
|---|---|
Use Scenario: Driving the analog inputs of a 12-bit, 105MSPS ADC in a software-defined radio front-end. IC Role / Device Role / Timing Role: Differential current-feedback amplifier providing gain, level-shifting, and wideband buffering between mixer and ADC. Use Value: 850MHz bandwidth and 2900V/µs slew rate preserve transient integrity across Nyquist zone; >40dBm IP3 maintains SFDR >72dBc. | Use Scenario: Intermediate frequency amplification in handheld spectrum analyzers operating from 10MHz to 140MHz. IC Role / Device Role / Timing Role: Precision gain block with on-demand power gating to extend battery life during idle periods. Use Value: 129mW/channel active power and <200µA/channel disabled current enable >10-hour runtime; ±4.1V swing drives 50Ω test ports directly. |
| Broadband Video Line Driver | Active Filter Building Block |
Use Scenario: Driving 75Ω composite video signals in medical imaging equipment requiring NTSC/PAL compliance. IC Role / Device Role / Timing Role: High-fidelity buffer with <0.01% differential gain and <0.05° differential phase error. Use Value: Measured dG/dΦ meets SMPTE RP-168; 800MHz flat bandwidth supports 1080p60 pixel clock harmonics without peaking. | Use Scenario: Implementing 5th-order elliptic low-pass filters in automated test equipment with programmable cutoff up to 200MHz. IC Role / Device Role / Timing Role: High-speed op-amp core in cascaded biquad sections requiring minimal phase shift and group delay variation. Use Value: 0.2dB gain flatness to 300MHz ensures passband ripple <0.05dB; 1.0ns rise/fall time enables sharp transition-band definition. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2694IRGTT | Lower power (75mW/channel), reduced bandwidth (G=+2: 500MHz), no disable function | Best suited for always-on, space-constrained IF stages where thermal budget is tighter than speed requirement | Select when power efficiency outweighs need for dynamic power control and >700MHz bandwidth |
| OPA2691IDR | SO-8 package only, no disable pins, higher θJA (100°C/W), same 850MHz/G=+2 bandwidth | Preferred for legacy board designs with existing SO-8 footprints and no thermal constraints | Select when PCB rework is prohibited and thermal management via heatsinking is feasible |
Compared with OPA2695IRGTT, the OPA2694IRGTT trades 350MHz bandwidth and disable capability for 42% lower power, while the OPA2691IDR retains full bandwidth but sacrifices thermal performance and power gating-making the OPA2695IRGTT optimal for new designs demanding both speed and adaptive power control.
Availability
OPA2695IRGTT is available at Aetrix Electronics and suitable for high-speed data acquisition, portable instrumentation, and broadband video line driving requiring stable component supply and guaranteed long-term sourcing.
Supply support for OPA2695IRGTT 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 delivering analog and embedded processing solutions with emphasis on precision, reliability, and energy efficiency.
The OPA2695IRGTT belongs to TI's high-speed current-feedback op amp product line, engineered specifically for wideband IF amplification, ADC driving, and differential signal conditioning in communications and test equipment.
FAQ
What is the maximum small-signal bandwidth of the OPA2695IRGTT at G = +2V/V?
The OPA2695IRGTT achieves an 850MHz small-signal bandwidth at G = +2V/V under ±5V supply conditions with RF = 511Ω. This specification is verified across temperature (–40°C to +85°C) and applies to both channels of the OPA2695IRGTT device, enabling direct interface with high-speed ADCs and IF signal chains without external compensation.
Does the OPA2695IRGTT support single-supply operation, and what is its minimum operating voltage?
Yes, the OPA2695IRGTT supports true single-supply operation from +3.5V to +12V. Its minimum specified operating voltage is +3.5V at +25°C, dropping to +3.6V at +85°C. In single-supply mode, the common-mode input range extends from 1.7V to 3.3V, and output swing reaches 0.8V to 4.2V (no load), making the OPA2695IRGTT viable for portable +5V systems with rail-referenced signal paths.
How does the disable functionality work on the OPA2695IRGTT, and what is its impact on power consumption?
The OPA2695IRGTT features independent active-low disable pins (DIS A and DIS B) that reduce total supply current to <200µA per channel when pulled low. Enable time is 25ns and disable time is 1µs, with <±100mV turn-on glitch. This allows precise, low-overhead power gating in time-multiplexed systems-critical for battery-powered instruments using the OPA2695IRGTT in intermittent-sampling architectures.
What is the differential 3rd-order intercept point (IP3) of the OPA2695IRGTT, and under what conditions is it specified?
The OPA2695IRGTT delivers >40dBm differential 3rd-order intercept (IP3) at frequencies below 140MHz with an 800Ω load. This value is measured in differential configuration (GD = +10V/V, RF = 500Ω), confirming its suitability for high-linearity IF amplification where intermodulation products must remain suppressed-such as in cellular base station receivers or spectrum analyzers using the OPA2695IRGTT as a front-end gain block.
What package type and thermal characteristics define the OPA2695IRGTT, and how do they compare to the SO-8 variant?
The OPA2695IRGTT uses a 4mm × 4mm QFN-16 package with PowerPAD™ thermal pad, achieving θJA = 55°C/W-nearly half that of the SO-8 OPA2695ID (θJA = 100°C/W). This allows higher sustained power density without derating. The QFN's symmetrical pinout also improves layout matching for differential pairs, a key advantage over the SO-8 version in the OPA2695IRGTT design context.
OPA2695IRGTT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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)
OPA2695IRGTT FAQ
1.How can I place an order for OPA2695IRGTT through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2695IRGTT 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 OPA2695IRGTT reliable?
The price and inventory of OPA2695IRGTT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2695IRGTT is usually 5 days.
3.What payment methods are accepted for OPA2695IRGTT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2695IRGTT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2695IRGTT?
OPA2695IRGTT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2695IRGTT 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 OPA2695IRGTT?
For technical support, including OPA2695IRGTT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2695IRGTT requirements.
6.How does Aetrix verify that OPA2695IRGTT is sourced from the original manufacturer or authorized distributors?
All OPA2695IRGTT 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 OPA2695IRGTT meets industry standards.
7.What is the process for return or replacement of OPA2695IRGTT?
All OPA2695IRGTT units undergo pre-shipment inspection (PSI). If there is an issue with OPA2695IRGTT, 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 OPA2695IRGTT part is unused and in its original packaging.
Return procedure for OPA2695IRGTT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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