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Texas Instruments OPA690ID
- Part No.:
- OPA690ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA690ID.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:335
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Product details
Overview
OPA690ID from Texas Instruments is a wideband, voltage-feedback operational amplifier with disable control, designed for high-speed signal conditioning in ±5V or single 5V supply systems. It delivers 500MHz small-signal bandwidth (G=1), 1800V/µs slew rate, ±3.9V output swing into 100Ω, and 190mA output current - enabling use as ADC driver, transimpedance amplifier, or video line driver.
For engineers reviewing the OPA690ID datasheet, OPA690ID pinout, OPA690ID application, or OPA690ID equivalent, key selection criteria include disable timing (25ns enable / 200ns disable), low 5.5mA quiescent current, bipolar input architecture, and SOIC-8 package compatibility with high-frequency layout requirements.
Technical Context
The OPA690ID uses a bipolar-input, voltage-feedback architecture optimized for unity-gain stability and fast settling (12ns to 0.02%). Its disable function asserts high-impedance output and reduces supply current to ≤200µA, with defined enable/disable voltage thresholds (3.3V/1.7V) and sub-50mV turn-on/off glitches.
It operates across –40°C to +85°C with ±3.4V common-mode input range (±5V supply) and 60–65dB CMRR at DC, supporting precision gain stages where input bias current (±3µA typ) and offset voltage (±1mV typ) must be tightly controlled in high-speed analog front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=1) | 500MHz at ±5V supply - supports >200MHz baseband signal paths without peaking |
| Slew rate | 1800V/µs - enables clean 4-V step response with 2.8ns rise time into 100Ω |
| Output current | ±190mA sourcing/sinking - drives heavy capacitive loads or low-Z cables directly |
| Disable current | ≤200µA - reduces system power by >96% when idle in portable instruments |
| Input voltage noise | 5.5nV/√Hz - maintains SNR in low-level signal amplification up to 10MHz |
| Settling time | 12ns to 0.02% - meets sampling jitter requirements for 50+ MSPS ADCs |
| Quiescent current | 5.5mA - balances speed and battery life in handheld test equipment |
Pinout & Package
OPA690ID is packaged in an 8-pin SOIC (D package), 4.9mm × 6mm footprint, with exposed pad not present. Pin functions are validated per TI SBOS223H datasheet Section 5.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 5 | No connection (NC) | Must remain unconnected; no internal bond or routing |
| 2 | Inverting input (IN–) | Differential input node; requires matched trace length and impedance for stability |
| 3 | Noninverting input (IN+) | High-impedance input (3.2MΩ || 0.9pF); sensitive to PCB leakage |
| 4 | –VS | Negative supply rail; decoupling capacitor required within 5mm |
| 6 | Output | Capable of ±3.9V swing into 100Ω; closed-loop Zout = 0.04Ω @ 100kHz |
| 7 | +VS | Positive supply rail; supports 5V to 12V total supply range |
| 8 | DIS | Active-low disable control; 1.7V max threshold ensures TTL/CMOS compatibility |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable architecture | 535MHz bandwidth at G=1 without external compensation - eliminates need for feedback capacitor tuning |
| Fast enable/disable switching | 25ns enable and 200ns disable times - enables time-gated signal acquisition in pulsed systems |
| Low-glitch disable transition | ±50mV turn-on and ±20mV turn-off output glitch - prevents false triggering in downstream comparators |
| Bipolar input stage | ±3µA input bias current (typ) - suitable for low-source-impedance sensor interfaces and active filters |
| High-output-current capability | 190mA sourcing into 100Ω - drives 75Ω video lines or 50Ω RF traces without external buffer |
Applications
| High-Speed ADC Driver | Transimpedance Amplifier |
|---|---|
Use Scenario: Driving the input of a 12-bit, 50MSPS analog-to-digital converter in medical ultrasound front-end. IC Role / Device Role / Timing Role: Buffer and level-shift photodiode current signals while preserving transient fidelity and minimizing aperture jitter. Use Value: 12ns settling time and 1800V/µs slew rate ensure <0.5LSB error during full-scale transitions at Nyquist rate. | Use Scenario: Converting photocurrent from avalanche photodiode (APD) in fiber-optic receiver modules. IC Role / Device Role / Timing Role: High-bandwidth, low-noise current-to-voltage conversion with fast overload recovery. Use Value: 5.5nV/√Hz input voltage noise and 200MHz large-signal bandwidth maintain dynamic range up to 100MHz modulation. |
| Portable Instrumentation | Video Line Driver |
Use Scenario: Signal conditioning stage in handheld oscilloscope probe amplifier with battery-powered operation. IC Role / Device Role / Timing Role: Low-power, high-fidelity gain block enabling 200MHz analog bandwidth in compact form factor. Use Value: 5.5mA quiescent current and disable mode reduce average power to <100µA during standby, extending battery life. | Use Scenario: Driving composite video (CVBS) or RGB signals over 75Ω coaxial cable in broadcast monitoring equipment. IC Role / Device Role / Timing Role: Output buffer with rail-to-rail drive capability and minimal group delay variation. Use Value: ±3.9V output swing into 75Ω and 500MHz small-signal BW preserve luminance/chrominance integrity to 5.5MHz. |
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 |
|---|---|---|---|
| OPA695ID | Current-feedback architecture; 4300V/µs slew rate but not unity-gain stable (min G=2) | Requires minimum gain ≥2; unsuitable for G=1 buffer or follower configurations | Select OPA695ID only when fixed gain ≥2 and maximum slew rate outweighs stability constraints |
| OPA847IDR | FET-input, 3.9GHz GBW, 1050V/µs slew rate; higher 1.05nV/√Hz noise floor than OPA690ID | Lower input bias current (1.2pA) suits high-Z sensors; less suitable for low-impedance line driving | Choose OPA847IDR for ultra-low bias current needs; OPA690ID preferred for high-output-current, low-noise trade-off |
Compared with OPA695ID and OPA847IDR, the OPA690ID uniquely combines unity-gain stability, 190mA output drive, and 5.5nV/√Hz noise - making it optimal for ADC drivers and transimpedance amplifiers where gain flexibility and load robustness are critical.
Availability
OPA690ID is available at Aetrix Electronics and suitable for high-speed imaging channels, ADC buffers, and portable instrumentation requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA690ID 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 solutions, with decades of expertise in high-performance op amps and signal chain components.
The OPA690ID belongs to TI's precision high-speed op amp product line, engineered specifically for applications demanding wide bandwidth, fast settling, and integrated power management - such as test equipment, medical imaging, and communications infrastructure.
FAQ
What supply voltage range does the OPA690ID support?
The OPA690ID operates from a total supply voltage of 5V to 12V, including dual ±5V (10V total) and single +5V configurations. At ±5V, it delivers 500MHz small-signal bandwidth and 1800V/µs slew rate; at +5V, bandwidth reduces to 400MHz and slew rate to 1000V/µs. The device maintains specified performance across –40°C to +85°C ambient temperature.
How does the disable function work on the OPA690ID?
The OPA690ID DIS pin is active-low: pulling it below 1.7V (max) disables the amplifier, reducing supply current to ≤200µA and placing the output in high-impedance state. Enable occurs when DIS rises above 3.3V (min). Enable time is 25ns and disable time is 200ns, with ±50mV turn-on and ±20mV turn-off output glitches measured under G=2, RL=150Ω conditions.
What is the output voltage swing specification for the OPA690ID?
At ±5V supply, the OPA690ID delivers ±3.9V output swing into no load and ±3.7V into 100Ω. At +5V single supply, it achieves 3.8V maximum positive output and 1.0V minimum positive output (referenced to ground), with 3.7V/1.15V swing into 100Ω. These values are guaranteed over –40°C to +85°C and define usable dynamic range for line drivers and ADC interface circuits.
Does the OPA690ID require external compensation for unity-gain stability?
No, the OPA690ID is internally compensated for unity-gain stability. It achieves 535MHz small-signal bandwidth at G=1V/V without external components. Peaking is limited to 4dB at ±5V supply, and the device remains stable with capacitive loads up to 100pF when using recommended isolation resistors (e.g., 10Ω–47Ω series resistor per Figure 6-15).
What are the thermal characteristics of the OPA690ID in SOIC-8 package?
The OPA690ID in D-package (SOIC-8) has a junction-to-ambient thermal resistance (RθJA) of 125°C/W. With 5.5mA quiescent current and typical 100Ω load, power dissipation stays below 125mW at room temperature, resulting in <16°C junction rise. For sustained high-current operation, PCB copper area and airflow should be optimized using TI's thermal guidelines in Section 6.4.
OPA690ID 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:
- 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
OPA690ID FAQ
1.How can I place an order for OPA690ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA690ID 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 OPA690ID reliable?
The price and inventory of OPA690ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA690ID is usually 5 days.
3.What payment methods are accepted for OPA690ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA690ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA690ID?
OPA690ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA690ID 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 OPA690ID?
For technical support, including OPA690ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA690ID requirements.
6.How does Aetrix verify that OPA690ID is sourced from the original manufacturer or authorized distributors?
All OPA690ID 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 OPA690ID meets industry standards.
7.What is the process for return or replacement of OPA690ID?
All OPA690ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA690ID, 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 OPA690ID part is unused and in its original packaging.
Return procedure for OPA690ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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