My Inquiry
My Account
Texas Instruments OPA695IDGKR
- Part No.:
- OPA695IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA695IDGKR.pdf
- Description:
- IC OPAMP CFA 1 CIRCUIT 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,607
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA695IDGKR from Texas Instruments is a current-feedback operational amplifier optimized for high-gain, ultra-wideband signal conditioning in precision instrumentation. It delivers 450MHz small-signal bandwidth at G = +8V/V, 4300V/μs slew rate (±5V), ±4.2V output swing, and –65dBc HD2 at 10MHz - enabling high-fidelity ADC driver and arbitrary waveform generator output stages.
For engineers reviewing the OPA695IDGKR datasheet, OPA695IDGKR pinout, OPA695IDGKR application, or OPA695IDGKR equivalent, key selection criteria include disable-mode power-down current (100–170μA), VSSOP-8 package thermal performance (RθJA = 135°C/W), gain-flatness bandwidth (320MHz at G = +2V/V), and harmonic distortion vs. load resistance behavior.
Technical Context
The OPA695IDGKR uses a current-feedback architecture with low-impedance inverting input (29Ω) and high-impedance noninverting input (280kΩ || 1.2pF), enabling stable operation across gains ≥+2V/V without external compensation. Its transimpedance open-loop gain (45–85kΩ) and fast enable time (25ns) support dynamic gain switching in digitizer front-ends.
It operates from ±5V or single 5V supply, with dedicated DIS pin controlling shutdown via TTL-compatible thresholds (enable >3.3V, disable <1.8V). The VSSOP-8 package includes exposed thermal pad connected to –VS, supporting high-power-density PCB layouts in portable test equipment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G = +8V/V) | 450MHz at ±5V - enables direct interface to 12-bit, 500MSPS ADCs without intermediate buffering |
| Slew rate | 4300V/μs (±5V) - supports clean 4VPP step response with <1ns rise time for pulse fidelity |
| Output swing | ±4.2V no-load - drives 100Ω loads to ±3.9V while maintaining <0.1% settling in 10ns |
| Input voltage noise | 1.8nV/√Hz - preserves SNR in low-noise IF amplification chains up to 100MHz |
| HD2 @ 10MHz | –65dBc (RL = 100Ω) - meets spectral purity requirements for cable-modem upstream line drivers |
| Disable current | 100–170μA - reduces system standby power by >99% versus active mode (12.9mA) |
| Enable time | 25ns - allows sub-100ns channel switching in multi-channel arbitrary waveform generators |
Pinout & Package
DGK package: 8-pin VSSOP (3mm × 4.9mm) with exposed thermal pad connected to –VS for enhanced thermal dissipation (RθJB = 56°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Output | High-current, low-impedance output capable of ±120mA into 100Ω loads |
| 2 | –VS | Negative supply rail; thermal pad must be soldered to ground plane for RθJA = 135°C/W |
| 3 | +VS | Positive supply rail; accepts ±5V or single 5V operation |
| 4 | Inverting Input | Low-impedance node (29Ω) - sets feedback path gain and stability with RF resistor |
| 5 | Noninverting Input | High-impedance input (280kΩ || 1.2pF) - referenced to system ground or common-mode bias |
| 6 | DIS | Active-low disable control; <1.8V disables amplifier, >3.3V enables normal operation |
| 7, 8 | NC | No connection - left unconnected per TI specification; not internally bonded |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-high slew rate | 4300V/μs enables accurate reproduction of fast transient signals without slewing-induced distortion |
| Integrated disable function | 25ns enable time and 1μs disable time allow precise timing control in multiplexed signal paths |
| Wide supply range | Operates from ±5V to ±6V or single 5V - simplifies power architecture in portable instruments |
| Low distortion at high frequency | –65dBc HD2 at 10MHz ensures minimal spectral regrowth in broadband video and IF applications |
| VSSOP thermal design | Exposed thermal pad tied to –VS provides 30% lower junction-to-board resistance than SOIC-8 |
Applications
| Very Wideband ADC Drivers | Portable Instrumentation Amplifiers |
|---|---|
Use Scenario: Driving the analog input of 12-bit, 500MSPS ADCs in handheld spectrum analyzers. IC Role / Device Role / Timing Role: Final gain stage with 450MHz bandwidth and 10ns 0.5% settling to preserve ENOB at Nyquist. Use Value: Eliminates need for external buffer, reducing board area and interconnect parasitics that degrade SFDR. | Use Scenario: Output stage in battery-powered arbitrary waveform generators requiring fast turn-on/off. IC Role / Device Role / Timing Role: Current-output DAC driver with 25ns enable time and ±120mA sourcing capability. Use Value: Enables microsecond-scale channel switching and low-quiescent-power sleep modes (<170μA). |
| Broadband Video Line Drivers | Low-Cost Precision IF Amplifiers |
Use Scenario: Driving 75Ω coaxial cables in HD video test equipment with minimal group delay variation. IC Role / Device Role / Timing Role: Unity-gain stable buffer with 1700MHz SSBW (G = +1V/V) and 4.6dB peaking control. Use Value: Maintains flat 0.2dB gain response to 320MHz, preserving edge integrity in 1080p60 signals. | Use Scenario: Intermediate gain stage in 45MHz IF receivers for software-defined radio base stations. IC Role / Device Role / Timing Role: High-linearity amplifier with –86dBc HD3 at 10MHz and 1.8nV/√Hz input noise. Use Value: Achieves >75dB spurious-free dynamic range (SFDR) without complex filtering or trimming. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar current-feedback op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LMH6703MF/NOPB | Higher 1.8GHz SSBW at G = +1V/V but lower 350mA output drive and no disable pin | Lacks integrated power-down; requires external MOSFET switch for low-power modes | Preferred when maximum bandwidth at unity gain is critical and disable functionality is unnecessary |
| THS3491DGNR | Higher 1.2GHz SSBW at G = +8V/V and 9000V/μs slew rate, but consumes 22mA quiescent current | Designed for fixed-gain, high-output-power applications; no DIS pin or low-power shutdown | Selected for ultra-high-speed digitizers where power efficiency is secondary to speed and drive strength |
Compared with LMH6703MF/NOPB and THS3491DGNR, the OPA695IDGKR uniquely balances wideband performance (450MHz at G = +8V/V), low-power disable (100–170μA), and VSSOP-8 thermal efficiency - making it optimal for portable, multi-channel, and battery-sensitive instrumentation.
Availability
OPA695IDGKR is available at Aetrix Electronics and suitable for very wideband ADC drivers, portable instrumentation amplifiers, broadband video line drivers, and low-cost precision IF amplifiers requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for OPA695IDGKR 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 for industrial, automotive, and communications markets.
The OPA695IDGKR belongs to TI's high-speed current-feedback op-amp product line, engineered specifically for precision, wideband signal acquisition and reconstruction in portable test equipment and communications infrastructure.
FAQ
What is the maximum small-signal bandwidth of the OPA695IDGKR at G = +8V/V?
The OPA695IDGKR achieves 450MHz small-signal bandwidth at G = +8V/V under ±5V supply conditions (TA = +25°C, RF = 402Ω, RL = 100Ω). This bandwidth decreases to 395MHz under single 5V operation. Bandwidth is gain-dependent and verified per Section 5.7 of the SBOS293J datasheet.
Does the OPA695IDGKR support single-supply operation?
Yes, the OPA695IDGKR operates from a single 5V supply (VS = 5V) with specified performance including 395MHz SSBW at G = +8V/V and 1700V/μs slew rate. Input common-mode range extends from 1.7V to 3.3V, and output swings from 0.8V to 4.2V with no load.
What is the purpose of the DIS pin on the OPA695IDGKR?
On the OPA695IDGKR, the DIS pin is an active-low disable control that reduces quiescent current from 12.9mA to 100–170μA when pulled below 1.8V. Enable occurs above 3.3V, with 25ns enable time and 1μs disable time - enabling rapid power cycling in multi-channel systems.
How does the OPA695IDGKR's VSSOP-8 package affect thermal performance?
The OPA695IDGKR in DGK (VSSOP-8) package has RθJA = 135°C/W and RθJB = 56°C/W when the exposed thermal pad is soldered to –VS. This is 30% lower junction-to-board resistance than SOIC-8, allowing higher continuous output current (±120mA) without exceeding 150°C junction temperature at TA = +85°C.
What harmonic distortion performance does the OPA695IDGKR deliver at 10MHz?
At 10MHz, the OPA695IDGKR delivers –65dBc second-harmonic distortion (HD2) and –86dBc third-harmonic distortion (HD3) with 2VPP output into 100Ω (±5V supply, G = +8V/V). Distortion improves to –78dBc HD2 with 500Ω load, confirming suitability for high-SFDR IF and video applications.
OPA695IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Amplifier Type:
- Current Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 4300V/µs
- Gain Bandwidth Product:
- -
- -3db Bandwidth:
- 1.7 GHz
- Current - Input Bias:
- 20 µA
- Voltage - Input Offset:
- 300 µV
- Current - Supply:
- 12.9mA
- Current - Output / Channel:
- 120 mA
- Voltage - Supply Span (Min):
- 5 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA695IDGKR FAQ
1.How can I place an order for OPA695IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA695IDGKR 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 OPA695IDGKR reliable?
The price and inventory of OPA695IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA695IDGKR is usually 5 days.
3.What payment methods are accepted for OPA695IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA695IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA695IDGKR?
OPA695IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA695IDGKR 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 OPA695IDGKR?
For technical support, including OPA695IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA695IDGKR requirements.
6.How does Aetrix verify that OPA695IDGKR is sourced from the original manufacturer or authorized distributors?
All OPA695IDGKR 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 OPA695IDGKR meets industry standards.
7.What is the process for return or replacement of OPA695IDGKR?
All OPA695IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with OPA695IDGKR, 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 OPA695IDGKR part is unused and in its original packaging.
Return procedure for OPA695IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA695IDGKR Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
