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Texas Instruments OPA2695IRGTR
- Part No.:
- OPA2695IRGTR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-VFQFN Exposed Pad
- Datasheet:
-
OPA2695IRGTR.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 16VQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,519
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Product details
Overview
OPA2695IRGTR from Texas Instruments is a dual, ultra-wideband current-feedback operational amplifier optimized for high-gain IF/RF signal conditioning. 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 - enabling precision ADC driving in portable instrumentation and broadband video systems.
For engineers reviewing the OPA2695IRGTR datasheet, OPA2695IRGTR pinout, OPA2695IRGTR application, or OPA2695IRGTR equivalent, this page provides verified package mapping (QFN-16), disable-capable dual-channel architecture, differential harmonic distortion data, thermal resistance (θJA = 55°C/W), and validated alternatives for high-speed analog front-end design.
Technical Context
The OPA2695IRGTR implements a symmetrical current-feedback topology with matched input/output paths across both channels, supporting stable operation at gains ≥+2V/V. Its transimpedance gain (ZOL = 85kΩ min) and low inverting input resistance (29Ω typ) define its wideband closed-loop behavior, while internal trimming ensures ±12.9mA/channel supply current accuracy over temperature.
Each channel features an independent disable control pin (DIS A/B), enabling sub-200µA/channel power-down with 25ns enable time and 1µs disable time. The QFN-16 package integrates thermal pad (PowerPAD™) and supports single +5V or split ±5V operation - critical for portable instruments and space-constrained RF subsystems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G = +2V/V) | 850MHz - enables baseband-to-IF amplification up to UHF without gain peaking compensation |
| Slew rate | 2900V/µs - supports clean 4VPP step response at 400MHz large-signal bandwidth |
| Output voltage swing | ±4.1V (no load) - delivers full-scale drive into 100Ω loads for ADC interface compliance |
| Differential IP3 | >40dBm (f < 140MHz, RL = 800Ω) - maintains SFDR in multi-tone IF receiver chains |
| Quiescent power | 129mW/channel (±5V) - balances performance and thermal budget in dual-channel portable designs |
| Disable current | <200µA/channel - reduces system standby power by 99% vs active mode |
| Input voltage noise | 1.8nV/√Hz (f > 1MHz) - preserves SNR in low-level signal amplification stages |
Pinout & Package
OPA2695IRGTR is housed in a thermally enhanced 16-pin QFN package (RGT) with exposed thermal pad (PowerPAD™), 55°C/W junction-to-ambient thermal resistance, and wettable flank leads for automated optical inspection.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 3, 4 | No-connect (NC) | Unused pins; must be left floating or tied to ground per layout guidelines |
| 5 | Inverting input A (–IN A) | Current-summing node for Channel A; low impedance (29Ω) enables stable high-Z feedback networks |
| 6 | Inverting input B (–IN B) | Current-summing node for Channel B; electrically isolated from Channel A to minimize crosstalk (–50dB @ ≤10MHz) |
| 7 | Non-inverting input A (+IN A) | High-impedance input (280kΩ || 1.2pF); referenced to common-mode voltage for differential configuration |
| 8 | Disable B (DIS B) | Active-low enable control for Channel B; logic threshold 1.5–1.8V (max); 75µA input bias at 0V |
| 9 | Non-inverting input B (+IN B) | High-impedance input for Channel B; matches +IN A for balanced differential driver implementation |
| 10 | –VS | Negative supply rail; decoupling required within 1mm of pin for stability at >100MHz |
| 11 | +VS | Positive supply rail; shared by both channels; PowerPAD™ connects to this potential for thermal conduction |
| 12 | +VS | Second +VS connection; improves PSRR and reduces supply-induced crosstalk between channels |
| 13 | Disable A (DIS A) | Active-low enable control for Channel A; identical timing specs to DIS B (25ns enable, 1µs disable) |
| 14 | Output A (OUT A) | Low-output-impedance (0.04Ω typ @ 100kHz) driver capable of ±120mA sourcing/sinking into 100Ω loads |
| 15 | –VS | Second –VS connection; symmetric layout with Pin 10 minimizes ground loop inductance |
| 16 | Output B (OUT B) | Matched output stage to OUT A; supports simultaneous dual-channel ADC sampling with <10ps skew |
Key Features
| Feature | Design Value |
|---|---|
| Dual-channel symmetry | Matched AC/DC performance (gain bandwidth, slew rate, offset) between channels enables true differential signaling without calibration |
| Disable control per channel | Independent DIS A/DIS B pins allow selective channel shutdown - essential for power-gated TDD systems and multi-path receivers |
| Ultra-low distortion at high frequency | –82dBc 3rd harmonic @ 10MHz/2VPP/RL ≥500Ω supports broadcast-grade video and LTE IF stages |
| Single-supply compatibility | Operates from +3.5V to +12V (min/max) with rail-to-rail output swing - eliminates level-shifting in battery-powered instruments |
| Thermal-enhanced QFN | 55°C/W θJA and PowerPAD™ enable 2× power density vs SO-8; supports continuous 250mW dissipation at 70°C ambient |
Applications
| High-Speed ADC Driver | Broadband Video Line Driver |
|---|---|
|
Use Scenario: Driving the analog inputs of 12-bit, 105MSPS pipeline ADCs in software-defined radio front ends. IC Role / Device Role / Timing Role: Dual-channel differential driver providing matched gain, phase, and settling (10ns to 0.1%) to preserve ENOB across Nyquist band. Use Value: 850MHz bandwidth and 2900V/µs slew rate ensure full-scale 75MHz IF signals are acquired without slewing-induced distortion or aperture jitter. |
Use Scenario: Amplifying composite NTSC/PAL video signals in portable medical imaging displays. IC Role / Device Role / Timing Role: Single-supply video buffer delivering 0.01% differential gain and 0.05° differential phase accuracy. Use Value: Low 1.8nV/√Hz input noise and –78dBc 2nd harmonic @ RL ≥500Ω maintain broadcast-grade color fidelity and luma/chroma separation. |
| Portable Instrumentation Signal Chain | Active Filter for RF Test Equipment |
|
Use Scenario: Front-end gain block in handheld spectrum analyzers requiring battery life >8 hours and dynamic range >80dB. IC Role / Device Role / Timing Role: Low-power IF amplifier with per-channel disable enabling burst-mode acquisition during idle periods. Use Value: 129mW/channel active power and <200µA/channel disabled current extend runtime while maintaining 40dBm IP3 for spurious-free measurement. |
Use Scenario: Gain stage in 50MHz–500MHz active bandpass filters for cellular base station test sets. IC Role / Device Role / Timing Role: Current-feedback op amp configured as high-Q, wide-dynamic-range filter element with minimal group delay variation. Use Value: 0.2dB gain flatness to 300MHz and 4.6dB peaking at G = +1 enable precise filter shape definition without external compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2694IDR | Lower power (70mW/channel), reduced bandwidth (G=+2: 500MHz), no disable function, SO-8 only | Best for cost-sensitive, non-portable systems where disable is unnecessary and thermal headroom exists | Select when board space allows SO-8 and power budget is tighter than performance requirements |
| LMH6723MA/NOPB | Single-channel, higher supply current (30mA), wider supply range (±6V), no disable, SO-8 package | Suitable for non-dual applications requiring higher output current (±150mA) and robust industrial supply tolerance | Choose for single-ended, high-current drive where dual-channel integration is not required |
Compared with OPA2695IRGTR, OPA2694IDR trades 350MHz bandwidth and disable capability for lower cost and power, while LMH6723MA/NOPB offers higher output drive at the expense of channel count and power efficiency - making OPA2695IRGTR optimal for compact, battery-aware dual-channel IF systems.
Availability
OPA2695IRGTR is available at Aetrix Electronics and suitable for high-speed ADC driver, broadband video line driver, portable instrumentation signal chain, active filter for RF test equipment, and differential IF amplifier applications requiring stable component supply across production lifecycles.
Supply support for OPA2695IRGTR 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 amp design and manufacturing.
The OPA2695IRGTR belongs to TI's ultra-wideband current-feedback op amp product line, engineered specifically for demanding IF/RF signal conditioning in portable, high-density, and high-dynamic-range systems.
FAQ
What is the maximum operating supply voltage for the OPA2695IRGTR?
The OPA2695IRGTR supports a maximum supply voltage of ±6V for split-rail operation or +12V for single-supply use. Absolute maximum ratings specify ±6.5V on power pins, but functional operation is guaranteed only up to ±6V or +12V per the Electrical Characteristics table. Exceeding these limits risks permanent damage or parametric shift, especially under transient conditions.
Does the OPA2695IRGTR support true differential input configuration?
The OPA2695IRGTR does not integrate a dedicated differential-input stage, but it supports true differential output drive via two matched channels configured in anti-phase (e.g., one inverting, one non-inverting). Its symmetrical pinout, matched AC performance, and low crosstalk (–50dB) enable high-fidelity differential signaling when used with external resistive networks like the 1:1/2R termination shown in the datasheet's differential driver test circuit.
How does the disable function affect output isolation in the OPA2695IRGTR?
When disabled (DIS A/B pulled low), the OPA2695IRGTR achieves 80dB off-isolation at 10MHz, effectively decoupling the output from the input path. This prevents signal feedthrough during power-gated modes and avoids loading downstream stages. Output capacitance drops to 4pF in disable state, minimizing capacitive coupling to adjacent traces in dense PCB layouts.
Can the OPA2695IRGTR drive a 50Ω transmission line directly?
Yes - the OPA2695IRGTR delivers ±120mA output current and maintains ±3.9V swing into 100Ω loads; for 50Ω, it sustains ±3.7V (min) at +85°C. To avoid instability, TI recommends series termination (e.g., 50Ω resistor at output) and proper RF layout: short traces, ground plane beneath QFN, and local 0.1µF + 10µF decoupling at each supply pin.
What is the thermal resistance (θJA) of the OPA2695IRGTR package?
The OPA2695IRGTR in QFN-16 (RGT) package has a typical junction-to-ambient thermal resistance (θJA) of 55°C/W when mounted on a standard 4-layer PCB with 1in² 2oz copper thermal pad connected to the PowerPAD™. This value assumes 6 thermal vias (0.3mm diameter) under the pad; inadequate thermal relief increases θJA and risks thermal shutdown above 140°C junction temperature.
OPA2695IRGTR 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)
OPA2695IRGTR FAQ
1.How can I place an order for OPA2695IRGTR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2695IRGTR 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 OPA2695IRGTR reliable?
The price and inventory of OPA2695IRGTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2695IRGTR is usually 5 days.
3.What payment methods are accepted for OPA2695IRGTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2695IRGTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2695IRGTR?
OPA2695IRGTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2695IRGTR 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 OPA2695IRGTR?
For technical support, including OPA2695IRGTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2695IRGTR requirements.
6.How does Aetrix verify that OPA2695IRGTR is sourced from the original manufacturer or authorized distributors?
All OPA2695IRGTR 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 OPA2695IRGTR meets industry standards.
7.What is the process for return or replacement of OPA2695IRGTR?
All OPA2695IRGTR units undergo pre-shipment inspection (PSI). If there is an issue with OPA2695IRGTR, 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 OPA2695IRGTR part is unused and in its original packaging.
Return procedure for OPA2695IRGTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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