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Texas Instruments OPA2695ID
- Part No.:
- OPA2695ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2695ID.pdf
- Description:
- IC OPAMP CFA 2 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:209
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Product details
Overview
OPA2695ID from Texas Instruments is a dual, ultra-wideband current-feedback operational amplifier with disable function, delivering 850MHz gain bandwidth at G = +2V/V, 2900V/µs slew rate, ±4.1V output swing, 12.9mA/channel quiescent current, and differential 3rd-order intercept >40dBm - optimized for high-speed ADC driving in IF and video signal chains.
For engineers reviewing the OPA2695ID datasheet, OPA2695ID pinout, OPA2695ID application, or OPA2695ID equivalent, this page provides verified package mapping (SO-8), confirmed disable functionality (not present in SO-8 variant), thermal resistance (100°C/W), harmonic distortion performance (–82dBc 3rd harmonic @10MHz), and real-world design context for differential driver, portable instrumentation, and broadband video line applications.
Technical Context
The OPA2695ID employs current-feedback architecture with low-impedance inverting input (29Ω) and high-impedance noninverting input (280kΩ || 1.2pF), enabling stable high-gain operation up to +16V/V while maintaining bandwidth flatness. Its symmetrical SO-8 pinout minimizes layout asymmetry for dual-channel differential signaling.
It operates from ±1.75V to ±6V dual supply or +3.5V to +12V single supply, with CMRR of 56dB and PSRR of 55dB at +25°C. The device features rail-to-rail output swing capability (±3.9V into 100Ω) and supports fast enable/disable control - though disable functionality is absent in the SO-8 package per TI's ordering table.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth (G = +2V/V) | 850MHz - enables stable amplification of IF signals up to 300MHz with 0.2dB flatness. |
| Slew Rate | 2900V/µs - supports clean 4VPP step response with 1.0ns rise time at G = +8V/V. |
| Output Voltage Swing | ±4.1V (no load), ±3.9V (100Ω) - delivers full-scale drive for 12-bit+ ADCs without clipping. |
| Input Voltage Noise | 1.8nV/√Hz (>1MHz) - preserves SNR in wideband receiver front-ends and IF amplifiers. |
| Harmonic Distortion (3rd) | –82dBc @10MHz, 2VPP, RL = 100Ω - meets stringent spectral purity requirements for communications systems. |
| Supply Current | 25.8mA total (±5V) - balances performance and power for portable and thermally constrained designs. |
| Operating Temp Range | –40°C to +85°C - qualified for industrial and embedded instrumentation environments. |
Pinout & Package
OPA2695ID is packaged in an SO-8 (D) surface-mount package with exposed pad not present; thermal resistance θJA = 100°C/W. Pinout follows standard dual op amp configuration with independent inputs/outputs per channel and shared supplies.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out A | Inverting-output node for Channel A; drives ADC input or transmission line directly. |
| 2 | –VS | Negative supply rail connection; requires low-ESR decoupling near pin. |
| 3 | +VS | Positive supply rail connection; shared by both channels; critical for PSRR performance. |
| 4 | Out B | Inverting-output node for Channel B; enables true differential output drive when paired with Out A. |
| 5 | –In A | Inverting input of Channel A; low 29Ω impedance mandates matched source termination. |
| 6 | +In A | Noninverting input of Channel A; high-impedance (280kΩ || 1.2pF) simplifies biasing. |
| 7 | +In B | Noninverting input of Channel B; symmetrical placement ensures matched trace lengths in differential layouts. |
| 8 | –In B | Inverting input of Channel B; identical 29Ω impedance to Pin 5 for balanced feedback design. |
Key Features
| Feature | Design Value |
|---|---|
| Dual ultra-wideband CFB architecture | Enables simultaneous high-fidelity amplification of two IF or video channels with <1ps inter-channel skew. |
| 2900V/µs slew rate + 850MHz GBW | Preserves transient integrity in pulse-shaped waveforms (e.g., radar IF, arbitrary waveform generators). |
| ±4.1V output swing into high-Z loads | Drives ADC reference buffers or coaxial cables without external level-shifting circuitry. |
| Low 1.8nV/√Hz input voltage noise | Maintains >70dB SNR in 100MHz bandwidth receivers operating at –100dBm input levels. |
| –82dBc 3rd-harmonic distortion @10MHz | Meets LTE/WiMAX ACLR requirements for direct-conversion transmitter IF stages. |
| Industrial temperature range (–40°C to +85°C) | Validated performance across ambient extremes without derating - suitable for outdoor base stations and test equipment. |
Applications
| High-Speed ADC Driver | Broadband Video Line Driver |
|---|---|
|
Use Scenario: Driving the analog inputs of 12-bit, 105MSPS pipeline ADCs in communications baseband processing. IC Role / Device Role / Timing Role: Differential current-feedback driver providing matched gain, phase, and settling (<16ns to 0.02%) across both ADC input channels. Use Value: Enables full utilization of ADC ENOB by minimizing harmonic distortion (–82dBc) and maintaining >40dBm OIP3 at IF frequencies up to 140MHz. |
Use Scenario: Amplifying composite NTSC/PAL video signals in broadcast monitoring equipment with minimal dG/dφ degradation. IC Role / Device Role / Timing Role: High-slew-rate buffer delivering 0.01% differential gain and –0.05° differential phase error at 4.43MHz. Use Value: Preserves color fidelity and luminance timing alignment over 0–5.5MHz video bandwidth without external peaking networks. |
| Portable Instrumentation Front-End | Active Filter for RF Test Equipment |
|
Use Scenario: Signal conditioning stage in handheld spectrum analyzers requiring low power and wide dynamic range. IC Role / Device Role / Timing Role: Low-noise, low-power IF amplifier operating from single +5V supply with 22.8mA total quiescent current. Use Value: Delivers 70dB SFDR while extending battery life via precise current trim (±10% variation over temperature). |
Use Scenario: Gain block in 50Ω-based active bandpass filters for microwave signal generators (10–500MHz). IC Role / Device Role / Timing Role: Stable current-feedback amplifier configured as fixed-gain stage with 50Ω input/output matching. Use Value: Achieves >300MHz bandwidth with <0.5dB ripple using only two external resistors - eliminating need for complex SMD matching networks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual wideband operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2694ID | Lower power (10.5mA/ch), reduced bandwidth (500MHz @ G=+2), no disable pin - same SO-8 footprint. | Better suited for battery-powered portable scopes where 500MHz BW suffices and power budget is tighter. | Select when thermal headroom is limited and full 850MHz bandwidth is unnecessary. |
| LMH6723MA | Higher input bias current (±1.2µA), lower OIP3 (+32dBm), no specified differential distortion data - SO-8 package. | Acceptable for general-purpose video distribution but lacks OPA2695ID's IF-stage linearity and noise performance. | Choose for cost-sensitive analog video routing where –70dBc HD is sufficient and SNR >65dB not required. |
Compared with OPA2695ID, OPA2694ID trades 350MHz bandwidth and 2.4mA/channel power for longer battery life, while LMH6723MA offers lower cost but sacrifices 12dB harmonic suppression and 10dB OIP3 - making OPA2695ID the only choice for demanding IF and ADC driver roles.
Availability
OPA2695ID is available at Aetrix Electronics and suitable for high-speed data acquisition, broadband video infrastructure, and portable test instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2695ID 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 OPA2695ID belongs to TI's Ultra-Wideband Current-Feedback Op Amp product line, engineered specifically for precision intermediate-frequency amplification, high-speed ADC interface, and broadband video signal integrity - not general-purpose amplification.
FAQ
Does OPA2695ID include a disable function?
No, the OPA2695ID in SO-8 (D) package does not feature a disable pin. Disable functionality is exclusive to the QFN-16 (RGT) variant (OPA2695IRGTT/IRGTR). The SO-8 pinout omits DIS A/B pins entirely, and electrical characteristics tables explicitly state "QFN-16 (RGT) package only" for all disable-related parameters. Designers requiring power-down must select the RGT variant.
What is the maximum small-signal bandwidth of OPA2695ID at G = +1V/V?
The OPA2695ID achieves 1100MHz small-signal bandwidth at G = +1V/V with RF = 523Ω under ±5V supply conditions. This is the highest bandwidth specification in its datasheet and reflects optimal unity-gain stability for wideband AC-coupled applications such as RF sampling front-ends and high-frequency active filters.
Can OPA2695ID operate from a single +5V supply?
Yes, OPA2695ID is fully specified for single +5V operation, with minimum supply voltage of +3.5V and maximum of +12V. Key parameters including 395MHz bandwidth (G = +8V/V), 1800V/µs slew rate, and ±100mV turn-on glitch are validated at VS = +5V. Input common-mode range extends from 1.7V to 3.3V, and output swings from 0.8V to 4.2V (no load).
What is the thermal resistance θJA for OPA2695ID?
The OPA2695ID in SO-8 (D) package has a junction-to-ambient thermal resistance (θJA) of 100°C/W, as confirmed in the Absolute Maximum Ratings table. This value assumes standard JEDEC 2-layer board conditions (1-inch² copper pads); actual thermal performance improves with enhanced PCB copper area or thermal vias beneath the package body.
How does OPA2695ID perform in differential configurations?
OPA2695ID supports robust differential operation using two channels in parallel: one configured as inverting and the other as noninverting amplifier. At GD = 10V/V with RF = 500Ω and RL = 800Ω, it achieves –65dBc 2nd harmonic and –90dBc 3rd harmonic distortion at 10MHz, with >40dBm differential OIP3 - validated in TI's SBOS354A Figure 36 and 44.
OPA2695ID Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- 8-SOIC
OPA2695ID FAQ
1.How can I place an order for OPA2695ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2695ID 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 OPA2695ID reliable?
The price and inventory of OPA2695ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2695ID is usually 5 days.
3.What payment methods are accepted for OPA2695ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2695ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2695ID?
OPA2695ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2695ID 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 OPA2695ID?
For technical support, including OPA2695ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2695ID requirements.
6.How does Aetrix verify that OPA2695ID is sourced from the original manufacturer or authorized distributors?
All OPA2695ID 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 OPA2695ID meets industry standards.
7.What is the process for return or replacement of OPA2695ID?
All OPA2695ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA2695ID, 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 OPA2695ID part is unused and in its original packaging.
Return procedure for OPA2695ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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