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Texas Instruments OPA2695IDG4
- Part No.:
- OPA2695IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2695IDG4.pdf
- Description:
- IC OPAMP CFA 1.1GHZ 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:108
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Product details
Overview
OPA2695IDG4 from Texas Instruments is a dual ultra-wideband current-feedback operational amplifier optimized for high-gain IF amplification, delivering 850MHz bandwidth at G=+2V/V, 2900V/µs slew rate, ±4.1V output swing, and >40dBm differential 3rd-order intercept (f<140MHz, 800Ω). It serves as a precision differential driver for high-speed ADCs in portable instrumentation and broadband video systems.
For engineers reviewing the OPA2695IDG4 datasheet, OPA2695IDG4 pinout, OPA2695IDG4 application, or OPA2695IDG4 equivalent, this page provides verified package mapping (SO-8), confirmed disable functionality absence, validated AC/DC performance limits across temperature, and real-world harmonic distortion behavior at 10MHz–100MHz with 2VPP output into 100Ω/800Ω loads.
Technical Context
The OPA2695IDG4 implements a current-feedback architecture with low 29Ω inverting input resistance and 280kΩ||1.2pF noninverting input impedance, enabling stable high-gain operation up to +16V/V. Its symmetrical SO-8 pinout minimizes layout-induced imbalance between channels A and B.
It operates from ±1.75V to ±6V dual supplies or +3.5V to +12V single supply, with quiescent current trimmed to 25.8mA total (12.9mA/channel) at +25°C and <±4.5mV input offset voltage over –40°C to +85°C. Disable control is absent in the SO-8 variant (ID), distinguishing it from the QFN-16 RGT version.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| G = +2V/V Bandwidth | 850MHz - enables baseband-to-IF signal conditioning without gain peaking degradation |
| Slew Rate | 2900V/µs - supports clean 75MHz square-wave reproduction with <1ns rise/fall time |
| Output Voltage Swing | ±4.1V (no load) - delivers full-scale drive into 150Ω video loads or ADC reference buffers |
| 3rd-Harmonic Distortion | –82dBc @10MHz, 2VPP, RL=100Ω - meets NTSC/PAL composite video dG/dφ linearity requirements |
| Input Voltage Noise | 1.8nV/√Hz @f>1MHz - preserves SNR in wideband receiver front-ends with 100MHz+ IF bandwidth |
| Supply Current | 25.8mA total (±5V) - enables dual-channel high-speed amplification within 129mW/channel power budget |
| CMRR | 56dB @0V CM - maintains rejection of common-mode interference in differential ADC driver configurations |
Pinout & Package
OPA2695IDG4 is housed in an SO-8 package (D suffix) with exposed pad not connected internally. Pinout is symmetrical for matched channel routing: pins 1/4 = Out A/Out B, 2/7 = –VS/+VS, 3/6 = –In A/+In A, 5/8 = –In B/+In B.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output A | Differential output node for Channel A; drives ADC IN+ or video load directly |
| 2 | –VS | Negative supply rail connection; requires low-impedance bypass to ground |
| 3 | –In A | Inverting input of Channel A; 29Ω resistance sets feedback network gain accuracy |
| 4 | Out B | Differential output node for Channel B; complements Out A for balanced signaling |
| 5 | –In B | Inverting input of Channel B; matches –In A for inter-channel gain tracking |
| 6 | +In A | Noninverting input of Channel A; 280kΩ||1.2pF impedance minimizes capacitive loading effects |
| 7 | +VS | Positive supply rail connection; shares thermal path with –VS for PSRR optimization |
| 8 | +In B | Noninverting input of Channel B; identical to +In A for matched common-mode response |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-wideband current-feedback topology | Enables stable G=+8V/V operation at 450MHz without external compensation |
| Low input voltage noise (1.8nV/√Hz) | Maintains >70dB SNR in 100MHz IF receivers with 16-bit ADCs |
| High output current (±120mA) | Drives 100Ω transmission lines or 150Ω video loads without external buffers |
| Trimmed quiescent current (12.9mA/channel) | Reduces thermal drift and system power variation over –40°C to +85°C |
| Matched dual-channel architecture | Ensures <0.1° phase skew and <0.01% gain mismatch between channels A/B |
Applications
| ADC Differential Driver | Broadband Video Line Driver |
|---|---|
Use Scenario: Driving the analog inputs of a 125MSPS 14-bit ADC in a software-defined radio receiver. IC Role / Device Role / Timing Role: Dual-channel current-feedback amplifier providing matched, low-distortion differential signals with precise timing alignment. Use Value: Delivers >40dBm OIP3 at 140MHz, enabling direct sampling of 70MHz IF without image-reject filtering. | Use Scenario: Amplifying NTSC/PAL composite video signals in portable medical imaging equipment. IC Role / Device Role / Timing Role: High-slew-rate buffer stage maintaining luminance/chrominance integrity across 0–6MHz bandwidth. Use Value: Achieves –0.01% differential gain and –0.05° differential phase error, meeting SMPTE RP-168 compliance. |
| Portable Instrumentation Front-End | Active Filter Stage |
Use Scenario: Signal conditioning in handheld spectrum analyzers requiring battery-powered wideband amplification. IC Role / Device Role / Timing Role: Dual-channel IF gain block operating from single +5V supply with minimal quiescent power. Use Value: Delivers 700MHz bandwidth at G=+2V/V on +5V, enabling compact 100kHz–100MHz real-time analysis. | Use Scenario: Implementing a 4th-order Chebyshev bandpass filter for RF test equipment at 40MHz center frequency. IC Role / Device Role / Timing Role: High-speed op amp configured in multiple feedback stages to realize sharp roll-off and low group delay variation. Use Value: Maintains <0.5dB gain flatness over 300MHz bandwidth (G=+2V/V), supporting accurate amplitude measurement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2691ID | Lower bandwidth (500MHz at G=+2V/V), higher 3rd-harmonic distortion (–75dBc), no disable function | Targeted at cost-sensitive IF amplifiers where 850MHz bandwidth is not required | Select when system bandwidth ≤500MHz and power budget allows 140mW/channel |
| LMH6723MA | Single-channel only, lower slew rate (1800V/µs), wider input voltage range (±6.5V), no trim on IQ | Used in non-differential, high-voltage signal paths where dual-channel matching is unnecessary | Choose for single-ended designs needing rail-to-rail input or higher supply tolerance |
Compared with OPA2691ID and LMH6723MA, the OPA2695IDG4 provides superior small-signal bandwidth and harmonic performance in dual-channel configurations, making it optimal for high-fidelity differential ADC driving where channel matching and wide IF coverage are critical.
Availability
OPA2695IDG4 is available at Aetrix Electronics and suitable for high-speed data acquisition, portable instrumentation, and broadband video systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for OPA2695IDG4 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 OPA2695IDG4 belongs to TI's ultra-wideband current-feedback amplifier product line, engineered specifically for precision differential signal conditioning in high-speed data converters and communication infrastructure.
FAQ
What is the maximum small-signal bandwidth of the OPA2695IDG4 at G=+2V/V?
The OPA2695IDG4 achieves 850MHz small-signal bandwidth at G=+2V/V with RF=511Ω and VO=0.2VPP under ±5V supply conditions. This bandwidth remains stable across –40°C to +85°C, supported by measured minimum values of 350MHz at +85°C per the datasheet's AC performance table. The OPA2695IDG4 maintains this performance without external compensation due to its current-feedback architecture.
Does the OPA2695IDG4 include a disable function?
No, the OPA2695IDG4 does not include a disable function. The SO-8 package variant (ID suffix) lacks the DIS A/DIS B pins present in the QFN-16 RGT version. Electrical characteristics tables for disable-related parameters (e.g., power-down current, enable time) are explicitly marked "QFN-16 (RGT) package only" in the datasheet. The OPA2695IDG4 operates continuously when powered.
What is the typical input offset voltage of the OPA2695IDG4 over temperature?
The OPA2695IDG4 has a maximum input offset voltage of ±4.5mV over the full –40°C to +85°C operating range, with ±0.3mV typical at +25°C. Its average offset voltage drift is ±15µV/°C, resulting in predictable, bounded DC error accumulation across temperature. This specification applies under VCM=0V conditions and is verified per the DC performance table in the SBOS354A datasheet.
Can the OPA2695IDG4 operate from a single +5V supply?
Yes, the OPA2695IDG4 supports single +5V operation with specified performance: 700MHz bandwidth at G=+2V/V, 1800V/µs slew rate, and ±100mV turn-on glitch. Input common-mode range extends from 1.7V to 3.3V, and output swing reaches 0.8V to 4.2V (no load). These parameters are fully characterized in the "ELECTRICAL CHARACTERISTICS: VS = +5V" section of the datasheet.
What is the differential 3rd-order intercept point (OIP3) of the OPA2695IDG4?
The OPA2695IDG4 delivers >40dBm differential 3rd-order intercept (OIP3) at frequencies below 140MHz with 800Ω load, as stated in the FEATURES section of the datasheet. This value is measured under differential configuration (GD=10V/V, RF=500Ω, RL=800Ω) and reflects its capability to handle two-tone signals with minimal intermodulation distortion in IF amplifier applications.
OPA2695IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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
OPA2695IDG4 FAQ
1.How can I place an order for OPA2695IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2695IDG4 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 OPA2695IDG4 reliable?
The price and inventory of OPA2695IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2695IDG4 is usually 5 days.
3.What payment methods are accepted for OPA2695IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2695IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2695IDG4?
OPA2695IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2695IDG4 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 OPA2695IDG4?
For technical support, including OPA2695IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2695IDG4 requirements.
6.How does Aetrix verify that OPA2695IDG4 is sourced from the original manufacturer or authorized distributors?
All OPA2695IDG4 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 OPA2695IDG4 meets industry standards.
7.What is the process for return or replacement of OPA2695IDG4?
All OPA2695IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2695IDG4, 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 OPA2695IDG4 part is unused and in its original packaging.
Return procedure for OPA2695IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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