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Texas Instruments OPA890IDG4
- Part No.:
- OPA890IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA890IDG4.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,764
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Product details
Overview
OPA890IDG4 from Texas Instruments is a unity-gain stable, wideband voltage-feedback operational amplifier with disable control, delivering 115MHz small-signal bandwidth at G = +2V/V, 500V/μs slew rate, ±4V output swing on ±5V supplies, and 1.1mA quiescent current - optimized for RGB line driving and single-supply ADC input buffering.
For engineers reviewing the OPA890IDG4 datasheet, OPA890IDG4 pinout, OPA890IDG4 application, or OPA890IDG4 equivalent, key selection criteria include disable-enabled power management (30μA shutdown), differential gain/phase performance (<0.06%/0.04°), low harmonic distortion (–88dBc 2nd-harmonic @1MHz), and SO-8 package compatibility with industrial temperature range (–40°C to +85°C).
Technical Context
The OPA890IDG4 employs a novel high-slew-rate input stage that dynamically increases compensation capacitor charging current with input error voltage - enabling 500V/μs slew rate while maintaining only 1.1mA quiescent current. Unlike conventional voltage-feedback op amps, it avoids fixed-bias current steering limitations.
Its disable function asserts a high-impedance output state with <7μs disable time and 200ns enable time, while maintaining 70dB off-isolation at 5MHz. The architecture supports both bipolar (±1.5V to ±6V) and single-supply (3V to 12V) operation, with rail-swing headroom of ≤1.5V on +5V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 115MHz at G = +2V/V (±5V): enables >100MHz video/ADC signal paths without instability |
| Slew Rate | 500V/μs (±5V): supports full-power 2VPP signals up to 170MHz large-signal bandwidth |
| Output Swing | ±4V no load (±5V supply): delivers 8VPP dynamic range with <1.5V headroom to rails |
| Quiescent Current | 1.1mA (±5V): lowest in class for wideband VFB op amps, enabling portable instrumentation |
| Disable Current | 30μA max (VDIS = 0V): reduces system standby power by >97% vs active mode |
| Differential Gain/Phase | 0.05%/0.03° (RL = 150Ω): meets broadcast video line driver specs per SMPTE 253M |
| Harmonic Distortion | –88dBc 2nd-harmonic (1MHz, RL ≥500Ω): preserves signal fidelity in imaging/communications channels |
Pinout & Package
OPA890IDG4 is packaged in an SO-8 (D) surface-mount package with exposed pad thermal enhancement, rated for –40°C to +85°C operation and 105°C/W junction-to-ambient thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (DIS) | Disable Control Input | Active-low digital enable; <0.8V disables output (Hi-Z), >3.0V enables normal operation |
| 2 (+VS) | Positive Supply | Accepts +3V to +12V single or ±1.5V to ±6V dual supply; decoupling required |
| 3 (OUT) | Amplifier Output | Capable of ±40mA sourcing/sinking; 0.04Ω closed-loop output impedance at 100kHz |
| 4 (NC) | No Connection | Internally unconnected; must be left floating or grounded per layout best practices |
| 5 (NC) | No Connection | Internally unconnected; no external connection required |
| 6 (–) | Inverting Input | Differential input node; 190kΩ||0.6pF input impedance; matched bias current path required |
| 7 (+) | Noninverting Input | Differential input node; 3.2MΩ||0.9pF common-mode impedance; requires source resistance matching |
| 8 (–VS) | Negative Supply | Required for dual-supply operation; tied to ground for single-supply use with proper input biasing |
Key Features
| Feature | Design Value |
|---|---|
| Unity-Gain Stable Wideband Operation | 115MHz bandwidth at G = +2V/V with no external compensation required |
| Low-Power High-Speed Architecture | 500V/μs slew rate achieved at only 1.1mA supply current - 45% lower than comparable 200MHz op amps |
| Fast Enable/Disable Control | 200ns enable and 7μs disable times support burst-mode signal processing and power gating |
| Video-Optimized Linearity | 0.05% differential gain and 0.03° differential phase meet SD/HD video transmission standards |
| Flexible Supply Range | Operates from +3V to +12V single supply or ±1.5V to ±6V dual supply - simplifies mixed-rail system design |
Applications
| RGB Video Line Driver | Single-Supply ADC Input Buffer |
|---|---|
Use Scenario: Driving three parallel 75Ω coaxial cables from an RGB graphics controller in embedded displays or medical monitors. IC Role / Device Role / Timing Role: Unity-gain stable voltage buffer with 115MHz bandwidth and 0.05% differential gain to preserve color fidelity across full HD resolution. Use Value: Eliminates need for external AC-coupling capacitors and DC restoration circuits due to ±4V output swing on ±5V supplies. | Use Scenario: Conditioning analog sensor outputs before digitization in portable data acquisition systems using 12-bit+ SAR ADCs. IC Role / Device Role / Timing Role: High-speed, low-noise input driver with 8nV/√Hz voltage noise and 1.1mA quiescent current for battery-powered precision measurement. Use Value: Enables 100+ kSPS sampling with <–85dBc harmonic distortion at 1MHz, preserving ENOB in wideband front-ends. |
| xDSL Line Receiver Channel | High-Speed Imaging Signal Chain |
Use Scenario: Receiving upstream/downstream analog signals in ADSL2+ CPE equipment with multi-tone interference rejection. IC Role / Device Role / Timing Role: Low-distortion, high-PSRR (74dB) receive amplifier supporting 17MHz Nyquist bandwidth with 70dB off-isolation during channel sleep modes. Use Value: Reduces crosstalk between active and disabled lines via fast disable control and 4pF output capacitance in Hi-Z state. | Use Scenario: Amplifying fast transient pulses from CCD/CMOS image sensors in industrial machine vision cameras operating at >30fps. IC Role / Device Role / Timing Role: 170MHz large-signal bandwidth amplifier with 10ns 0.1% settling time for accurate pixel-level pulse capture. Use Value: Maintains <0.01% gain flatness to 20MHz (0.1dB), ensuring consistent intensity response across spatial frequency spectrum. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-feedback operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2890IDR | Dual-channel version in SO-8; identical AC/DC specs but shared disable pin per package | Requires redesign for single-channel use; better suited for multi-channel video or I/O buffering | Select when needing two matched OPA890IDG4 functions with shared power-down control |
| OPA690ID | Higher slew rate (1800V/μs) but 3.5× higher quiescent current (3.9mA); not unity-gain stable | Requires external compensation for G < +5; unsuitable for G = +1/+2 video buffers | Choose only for G ≥ +5, high-slew-demand applications where power budget allows |
Compared with OPA2890IDR and OPA690ID, the OPA890IDG4 uniquely balances ultra-low quiescent current (1.1mA), unity-gain stability, and 115MHz bandwidth - making it the only option for power-constrained, single-channel, wideband G = +2 video or ADC buffer designs.
Availability
OPA890IDG4 is available at Aetrix Electronics and suitable for RGB video line driving, single-supply ADC input buffering, and xDSL line receiver applications requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for OPA890IDG4 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 signal chain solutions.
The OPA890IDG4 belongs to TI's high-speed voltage-feedback op amp product line, engineered specifically for low-power, wideband signal conditioning in video, communications, and portable instrumentation where unity-gain stability and fast disable are mandatory.
FAQ
What supply voltages does the OPA890IDG4 support?
The OPA890IDG4 operates from +3V to +12V single supply or ±1.5V to ±6V dual supplies. At ±5V, it delivers 115MHz bandwidth and ±4V output swing; at +5V single supply, it supports 105MHz bandwidth with +1.0V to +4.0V output range. Absolute maximum ratings cap at ±6.5V supply or +12V single supply.
How does the disable function affect output behavior in the OPA890IDG4?
When the DIS pin is pulled LOW (<0.8V), the OPA890IDG4 enters power-down mode: supply current drops to ≤30μA, output transitions to high-impedance state within 7μs, and off-isolation reaches 70dB at 5MHz. The output capacitance in disable is 4pF, minimizing crosstalk in multi-channel systems. Pulling DIS HIGH (>3.0V) restores full operation in 200ns.
Can the OPA890IDG4 drive 75Ω video loads directly?
Yes - the OPA890IDG4 delivers ±3.5V output swing into 100Ω and maintains 0.05% differential gain / 0.03° differential phase into 150Ω, meeting SMPTE 253M for SD/HD video. For 75Ω, use series-terminated configuration (e.g., 75Ω source + 75Ω load) to preserve bandwidth and minimize reflections; typical application circuits show 750Ω feedback with 75Ω output termination.
What is the input voltage noise density of the OPA890IDG4 and how does it impact high-frequency applications?
The OPA890IDG4 has 8nV/√Hz input voltage noise above 100kHz. This is exceptionally low for a 115MHz, 500V/μs op amp consuming only 1.1mA - enabling high SNR in 1–100MHz signal chains such as ultrasound receivers or RF IF stages. At 1MHz, integrated noise over 100kHz–10MHz bandwidth is ~25μVrms, contributing <0.1% error in 25mVPP video signals.
Is the OPA890IDG4 pin-compatible with other TI high-speed op amps like the OPA690?
No - the OPA890IDG4 uses an SO-8 pinout with dedicated DIS (pin 1), NC (pins 4–5), and split supply pins (2, 8), whereas the OPA690ID uses SO-8 with different pin assignments (e.g., pin 1 = NC, pin 5 = DIS). Substituting OPA690ID for OPA890IDG4 requires PCB redesign due to incompatible pin mapping, disable logic polarity, and stability requirements (OPA690 is not unity-gain stable).
OPA890IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 500V/µs
- Gain Bandwidth Product:
- 130 MHz
- -3db Bandwidth:
- 260 MHz
- Current - Input Bias:
- 100 nA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 1.1mA
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA890IDG4 FAQ
1.How can I place an order for OPA890IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA890IDG4 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 OPA890IDG4 reliable?
The price and inventory of OPA890IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA890IDG4 is usually 5 days.
3.What payment methods are accepted for OPA890IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA890IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA890IDG4?
OPA890IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA890IDG4 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 OPA890IDG4?
For technical support, including OPA890IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA890IDG4 requirements.
6.How does Aetrix verify that OPA890IDG4 is sourced from the original manufacturer or authorized distributors?
All OPA890IDG4 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 OPA890IDG4 meets industry standards.
7.What is the process for return or replacement of OPA890IDG4?
All OPA890IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA890IDG4, 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 OPA890IDG4 part is unused and in its original packaging.
Return procedure for OPA890IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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