My Inquiry
My Account
Texas Instruments OPA690IDRG4
- Part No.:
- OPA690IDRG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA690IDRG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,596
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA690IDRG4 from Texas Instruments is a unity-gain stable, bipolar-input voltage-feedback operational amplifier optimized for high-speed ADC buffering and transimpedance amplification. 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 at ±5V supply. Its integrated disable pin reduces supply current to 100µA in power-down mode.
For engineers reviewing the OPA690IDRG4 datasheet, OPA690IDRG4 pinout, OPA690IDRG4 application, or OPA690IDRG4 equivalent, key selection criteria include its 13ns settling time (0.02%), low distortion (–85dBc HD2 at 5MHz), disable timing (40ns enable / 600ns disable), thermal resistance (125°C/W for SOIC-8), and compatibility with single- or dual-supply operation from 5V to 12V.
Technical Context
The OPA690IDRG4 employs a proprietary bipolar input stage and high-current output architecture enabling both wideband performance and robust drive capability. Its 1900V/µs slew rate and 535MHz unity-gain bandwidth stem from a composite architecture that combines fast transient response with stable closed-loop behavior across gains ≥1.
Operation includes a dedicated DIS pin (Pin 8) that places the output in high-impedance state and reduces quiescent current to ≤200µA when pulled low. The device maintains specified AC performance under ±5V, +5V, or ±6V supplies, with CMIR of ±3.4V and PSRR of 68–86dB depending on configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-signal BW (G=1) | 535MHz - enables direct sampling of >200MHz baseband signals without aliasing in ADC front-ends |
| Slew rate | 1900V/µs - supports full-scale 4-V step transitions in <2.3ns, critical for pulse fidelity in imaging channels |
| Output current | ±215mA - drives 100Ω video loads or active filters without external buffers |
| Input voltage noise | 4.6nV/√Hz - preserves SNR in low-level signal conditioning before 14-bit+ ADCs |
| Disable current | 100µA - reduces system standby power by >98% vs active mode (6.1mA), ideal for portable instruments |
| Settling time (0.02%) | 13ns - meets timing budget for 50MSPS+ successive-approximation ADC drivers |
| Supply range | 5V to 12V - supports both battery-powered (5V) and industrial rail (±5V, ±6V) configurations |
Pinout & Package
OPA690IDRG4 is packaged in an 8-pin SOIC (D package), 4.9mm × 6mm body size, with exposed pad not present. Pin 1 and Pin 5 are no-connect (NC); Pin 8 is the active-low disable control.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 | No connection | Internally unconnected; must be left floating or grounded per layout best practice |
| Pin 2 | Inverting input | Differential input node; requires matched trace length and impedance control for >100MHz stability |
| Pin 3 | Noninverting input | Reference input; sensitive to capacitive loading-keep stubs <0.5mm |
| Pin 4 | –VS | Negative supply rail; decouple with 100nF ceramic close to pin |
| Pin 5 | No connection | Internally unconnected; avoid routing traces or vias beneath this pad |
| Pin 6 | Output | High-current output; use short, wide trace and local 100nF + 150pF bypassing |
| Pin 7 | +VS | Positive supply rail; separate from –VS decoupling network |
| Pin 8 | DIS | Active-low disable; logic threshold 1.7–2.3V; 40ns enable ensures minimal glitch during wake-up |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stability | Guaranteed stable at G = 1 V/V without external compensation-reduces BOM count in gain-of-1 buffer stages |
| High-output-current stage | Delivers ±215mA into 100Ω while maintaining linearity-eliminates need for discrete output buffers in xDSL line drivers |
| Low-disable current | Draws ≤200µA in disabled state-enables microamp-level sleep modes in battery-operated portable instruments |
| Fast enable/disable timing | 40ns enable and 600ns disable times allow dynamic power gating synchronized to ADC sampling windows |
| Low harmonic distortion | –85dBc HD2 and –75dBc HD3 at 5MHz/2VPP into 100Ω-meets EN 61000-4-3 radiated immunity precompliance for medical imaging front-ends |
Applications
| High-Speed ADC Buffering | Transimpedance Amplifier (TIA) |
|---|---|
Use Scenario: Driving the input of a 14-bit, 50MSPS analog-to-digital converter in ultrasound beamforming equipment. IC Role / Device Role / Timing Role: High-fidelity, low-glitch buffer isolating sensor front-end from ADC sampling kickback; settles within 13ns to 0.02%. Use Value: Preserves effective number of bits (ENOB) by minimizing aperture jitter and harmonic distortion at IF frequencies up to 25MHz. | Use Scenario: Converting photodiode current (10nA–100µA) to voltage in optical time-domain reflectometry (OTDR) test equipment. IC Role / Device Role / Timing Role: Low-noise, high-bandwidth TIA with 4.6nV/√Hz input voltage noise and 535MHz gain-bandwidth product. Use Value: Enables sub-nanosecond pulse resolution and >70dB dynamic range without requiring cascaded amplification stages. |
| Video Line Driver | Portable Instrument Signal Chain |
Use Scenario: Driving 75Ω coaxial video lines in broadcast-quality SDI repeater modules operating at 1.485Gbps. IC Role / Device Role / Timing Role: Unity-gain stable driver delivering ±3.9V swing and 215mA peak current into reactive loads. Use Value: Maintains flat frequency response to 300MHz with <0.1dB gain flatness-meets SMPTE 259M eye diagram mask requirements. | Use Scenario: Signal conditioning stage in handheld spectrum analyzers with battery life targets >8 hours. IC Role / Device Role / Timing Role: Low-quiescent-current (6.1mA) amplifier with disable control reducing system sleep current to µA-range. Use Value: Extends battery runtime by >4× compared to non-disable op amps while preserving fast wake-up (<50ns) for real-time triggering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA695IDBVR | Current-feedback architecture; 4300V/µs slew rate but unstable at G = 1; higher input bias current (±10µA) | Requires gain ≥2 for stability; better suited for fixed-gain post-amplification than ADC buffering | Select only when gain ≥2 is fixed and ultra-fast slewing outweighs DC precision needs |
| OPA817IDBVR | FET-input; 400MHz GBW, 1000V/µs slew rate, 4.5nV/√Hz noise; no disable pin; higher input impedance (38MΩ) | Lacks power-down function; superior for high-Z sensor interfaces but unsuitable for portable battery optimization | Prefer when ultra-low input bias current and FET input are required, and disable functionality is unnecessary |
Compared with OPA690IDRG4, the OPA695IDBVR offers higher slew rate but sacrifices unity-gain stability and adds complexity in feedback design, while the OPA817IDBVR provides lower input current and noise but eliminates dynamic power control-making OPA690IDRG4 the optimal balance for ADC drivers needing disable, speed, and precision.
Availability
OPA690IDRG4 is available at Aetrix Electronics and suitable for high-speed imaging channels, ADC buffering, and portable instrument signal chains requiring stable component supply, long-term obsolescence management, and TI-authorized traceability.
Supply support for OPA690IDRG4 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 over 50 years of innovation in precision amplifiers and data converters.
The OPA690 belongs to TI's high-speed voltage-feedback op amp product line, engineered specifically for demanding signal acquisition systems where bandwidth, settling accuracy, and power-state flexibility must coexist-such as medical imaging, test equipment, and broadband communications.
FAQ
What is the maximum small-signal bandwidth of the OPA690IDRG4 at unity gain?
The OPA690IDRG4 achieves a guaranteed small-signal bandwidth of 535MHz at G = 1 V/V under ±5V supply conditions with 100Ω load and 0.5VPP output. This specification is measured per TI SBOS223H, Section 6.5, and reflects its optimized bipolar input stage for wideband stability without external compensation.
Does the OPA690IDRG4 support single-supply operation?
Yes, the OPA690IDRG4 operates from a single +5V supply (Section 6.6) with rail-to-rail output swing referenced to midsupply (1.1–3.9V). Input common-mode range extends from 1.15V to 3.85V, enabling direct interfacing with SAR ADC references and level-shifted sensor outputs without external bias networks.
How does the disable function affect output behavior in the OPA690IDRG4?
When the DIS pin (Pin 8) is pulled low, the OPA690IDRG4 output enters a high-impedance state with off-isolation of 73dB (RL = 150Ω) and output capacitance reduced to 8pF. Supply current drops to ≤200µA, and enable/disable transition times are 40ns and 600ns respectively-ensuring clean channel muting in multiplexed signal paths.
What is the typical harmonic distortion performance of the OPA690IDRG4 at 5MHz?
At 5MHz, 2VPP output, and RL = 100Ω, the OPA690IDRG4 delivers –85dBc second-harmonic distortion and –75dBc third-harmonic distortion under ±5V supply (Section 6.5). This low distortion supports high-fidelity signal reconstruction in video line drivers and xDSL receivers meeting ITU-T G.992.1 spectral mask requirements.
Is the OPA690IDRG4 pin-compatible with other devices in the OPA69x family?
No-the OPA690IDRG4 (SOIC-8) shares the same pinout as OPA690ID but differs from OPA690IDBV (SOT-23-6), which has only six pins and omits NC pins and one supply pin. Substituting packages requires PCB redesign; always verify package markings and thermal pad presence before layout reuse.
OPA690IDRG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- 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
OPA690IDRG4 FAQ
1.How can I place an order for OPA690IDRG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA690IDRG4 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 OPA690IDRG4 reliable?
The price and inventory of OPA690IDRG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA690IDRG4 is usually 5 days.
3.What payment methods are accepted for OPA690IDRG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA690IDRG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA690IDRG4?
OPA690IDRG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA690IDRG4 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 OPA690IDRG4?
For technical support, including OPA690IDRG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA690IDRG4 requirements.
6.How does Aetrix verify that OPA690IDRG4 is sourced from the original manufacturer or authorized distributors?
All OPA690IDRG4 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 OPA690IDRG4 meets industry standards.
7.What is the process for return or replacement of OPA690IDRG4?
All OPA690IDRG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA690IDRG4, 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 OPA690IDRG4 part is unused and in its original packaging.
Return procedure for OPA690IDRG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA690IDRG4 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…
