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Texas Instruments OPA690IDR
- Part No.:
- OPA690IDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA690IDR.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,750
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Product details
Overview
OPA690IDR from Texas Instruments is a unity-gain stable, voltage-feedback operational amplifier optimized for high-speed signal conditioning. It delivers 535MHz small-signal bandwidth (G = 1), 1900V/µs slew rate into 100Ω, ±3.9V output swing, and 4.6nV/√Hz input voltage noise - enabling precision ADC buffering and fast imaging channel amplification in ±5V or single 5V supply systems.
For engineers reviewing the OPA690IDR datasheet, OPA690IDR pinout, OPA690IDR application, or OPA690IDR equivalent, key selection criteria include disable-controlled power management (100µA shutdown current), low distortion at 5MHz (–85dBc HD2), thermal performance in SOIC-8 (RθJA = 125°C/W), and verified operation across –40°C to +85°C industrial temperature range.
Technical Context
The OPA690IDR employs a bipolar-input, voltage-feedback architecture with a novel output stage delivering 215mA sourcing/sinking capability while maintaining minimal headroom. Its disable pin (DIS) enables fast enable/disable transitions (25ns enable, 200ns disable) and high off-isolation (70dB), making it suitable for time-multiplexed or power-gated signal paths.
Unlike current-feedback op amps, the OPA690IDR achieves unity-gain stability without external compensation while sustaining 13ns 0.02% settling time - critical for high-speed sampling systems where phase margin and transient fidelity must coexist with wide bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=1) | 535MHz - supports >200MSPS ADC front-end gain stages without peaking or instability |
| Slew rate | 1900V/µs - enables full-scale 4V step response within 2.3ns, preserving pulse fidelity |
| Output current | ±215mA - drives 100Ω video loads or active filter feedback networks directly |
| Input voltage noise | 4.6nV/√Hz - maintains SNR integrity in low-level sensor signal chains up to 100MHz |
| Disable current | 100µA - reduces system standby power by >98% vs active quiescent current (6.1mA) |
| Supply range | 5V to 12V - operates from single 5V or split ±5V rails, compatible with LDO-regulated domains |
| Settling time (0.02%) | 13ns - meets timing budget for 50MHz sampling clocks with <0.1% error window |
Pinout & Package
OPA690IDR is packaged in an 8-pin SOIC (D package), 4.9mm × 6mm body size, with exposed pad not present. Pin functions are validated per TI SBOS223H Rev H (Oct 2024).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | No connection (NC) | Internally unconnected; must remain floating or grounded per layout best practice |
| 2 | Inverting input (IN–) | Differential input node; requires matched trace length and impedance control for >100MHz operation |
| 3 | Noninverting input (IN+) | High-impedance input (3.2MΩ || 0.9pF); sensitive to PCB parasitics above 50MHz |
| 4 | Negative supply (–VS) | Return path for bipolar operation; ties to ground in single-supply mode with proper biasing |
| 6 | Output | Capable of ±3.9V swing into 100Ω; requires series resistor (≥10Ω) when driving capacitive loads >10pF |
| 7 | Positive supply (+VS) | Accepts 5V to 12V; decoupling with 100nF ceramic + 100pF film required within 5mm |
| 8 | Disable (DIS) | Active-low digital control; 1.7–2.3V logic threshold; enables rapid power gating without external FET |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable wideband operation | Eliminates need for external compensation components in G ≥ 1 configurations, reducing BOM count and layout area |
| Integrated disable function | Reduces supply current to 100µA with 25ns enable time - ideal for time-division multiplexed analog channels |
| High-output-current stage | Drives 100Ω loads to ±3.9V without external buffers, simplifying video line driver or transimpedance amplifier designs |
| Low 5MHz harmonic distortion | –85dBc HD2 / –75dBc HD3 into 100Ω enables clean signal reconstruction in xDSL and imaging applications |
| Fast 13ns settling (0.02%) | Supports accurate sampling of multi-cycle waveforms in high-speed data acquisition systems with minimal aperture error |
Applications
| ADC Buffers | High-Speed Imaging Channels |
|---|---|
Use Scenario: Driving the input of a 16-bit, 100MSPS pipeline ADC in a medical ultrasound receiver. IC Role / Device Role / Timing Role: Low-noise, high-slew-rate buffer isolating the ADC from upstream filter stages while maintaining DC accuracy and transient response. Use Value: 4.6nV/√Hz input noise and 13ns settling ensure <0.5 LSB integral nonlinearity error across full Nyquist band. | Use Scenario: Amplifying pixel charge signals from a CMOS image sensor with 50MHz pixel clock and rolling shutter readout. IC Role / Device Role / Timing Role: High-bandwidth, low-distortion gain block placed immediately after column-level CDS to preserve dynamic range. Use Value: 535MHz bandwidth and –85dBc HD2 at 5MHz prevent harmonic folding into baseband during correlated double sampling. |
| Transimpedance Amplifiers | Video Line Drivers |
Use Scenario: Converting photodiode current (10µA–1mA) to voltage in a fiber-optic receiver front-end with 100MHz bandwidth requirement. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain and disable control for burst-mode optical sensing. Use Value: 215mA output current supports >1kΩ feedback resistors while maintaining stability; DIS pin enables µs-scale power cycling between bursts. | Use Scenario: Driving 75Ω coaxial video lines in broadcast-grade SDI signal distribution equipment. IC Role / Device Role / Timing Role: Final-stage line driver providing level-shifting, gain, and cable drive capability with ESD protection. Use Value: ±3.9V output swing into 100Ω ensures compliance with SMPTE 259M peak-to-peak voltage requirements; low 1.4ns rise time preserves edge integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA695IDBVR | Current-feedback architecture; 4300V/µs slew rate but not unity-gain stable; higher input bias current (10µA typical) | Better for fixed-gain >5 applications with aggressive slew demands; unsuitable for G=1 integrators or active filters | Select OPA695IDBVR only when gain ≥ 5 and stability at unity gain is not required |
| LMH6702MA/NOPB | Wider 1.8GHz GBW but higher 6.5nV/√Hz noise; no integrated disable pin; 12V max supply | Preferred for ultra-wideband RF IF amplification; lacks power-gating capability needed in portable instruments | Choose LMH6702MA/NOPB when bandwidth >1GHz is mandatory and disable functionality is implemented externally |
Compared with OPA695IDBVR and LMH6702MA/NOPB, the OPA690IDR uniquely balances unity-gain stability, integrated disable, and low noise - making it the optimal choice for ADC buffering and portable instrument front-ends where power efficiency and design simplicity are prioritized over maximum bandwidth.
Availability
OPA690IDR is available at Aetrix Electronics and suitable for high-speed imaging channels, ADC buffers, and portable instruments requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA690IDR 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 amp design and manufacturing.
The OPA690IDR belongs to TI's precision high-speed op amp product line, engineered specifically for applications demanding wide bandwidth, low distortion, and intelligent power management in space-constrained, battery-sensitive systems.
FAQ
What is the maximum small-signal bandwidth of the OPA690IDR at unity gain?
The OPA690IDR achieves a small-signal bandwidth of 535MHz at G = 1V/V under ±5V supply conditions with 100Ω load and 0.5VPP output. This value is measured per TI SBOS223H Rev H and reflects its unity-gain stable voltage-feedback architecture optimized for uncompensated high-speed operation.
Does the OPA690IDR support single-supply operation?
Yes, the OPA690IDR supports single-supply operation from 5V to 12V. At VS = 5V, it delivers 460MHz small-signal bandwidth (G = 1), 850V/µs slew rate, and 3.7–3.9V output swing referenced to midsupply (2.5V), enabling use in portable instruments and battery-powered systems without dual-rail supplies.
How does the disable (DIS) pin function on the OPA690IDR?
The DIS pin on the OPA690IDR is an active-low control: pulling DIS low disables the amplifier, reducing supply current to ≤200µA and placing the output in high-impedance state. Enable time is 25ns and disable time is 200ns (±5V supply), with defined logic thresholds (enable >3.3V, disable <2.3V) ensuring robust interfacing with standard CMOS logic.
What is the input voltage noise density of the OPA690IDR and at what frequency is it specified?
The OPA690IDR has an input voltage noise density of 4.6nV/√Hz, specified at frequencies >1MHz per electrical characteristics tables in SBOS223H. This value remains stable across 1–100MHz, supporting low-noise signal conditioning in high-frequency sensor interfaces and RF receiver chains.
Can the OPA690IDR drive a 75Ω video load while maintaining signal integrity?
Yes - the OPA690IDR delivers ±3.9V output swing into 100Ω and sustains 215mA sourcing/sinking current, exceeding SMPTE 259M requirements for 75Ω SDI line drivers. Its 1.4ns rise time, –85dBc HD2 at 5MHz, and 70dB off-isolation ensure minimal jitter, crosstalk, and harmonic distortion in broadcast video signal paths.
OPA690IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 1800V/µs
- Gain Bandwidth Product:
- 300 MHz
- -3db Bandwidth:
- 500 MHz
- Current - Input Bias:
- 3 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 5.5mA
- Current - Output / Channel:
- 190 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-SOIC
OPA690IDR FAQ
1.How can I place an order for OPA690IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA690IDR 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 OPA690IDR reliable?
The price and inventory of OPA690IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA690IDR is usually 5 days.
3.What payment methods are accepted for OPA690IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA690IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA690IDR?
OPA690IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA690IDR 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 OPA690IDR?
For technical support, including OPA690IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA690IDR requirements.
6.How does Aetrix verify that OPA690IDR is sourced from the original manufacturer or authorized distributors?
All OPA690IDR 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 OPA690IDR meets industry standards.
7.What is the process for return or replacement of OPA690IDR?
All OPA690IDR units undergo pre-shipment inspection (PSI). If there is an issue with OPA690IDR, 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 OPA690IDR part is unused and in its original packaging.
Return procedure for OPA690IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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