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Texas Instruments OPA2889ID
- Part No.:
- OPA2889ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA2889ID.pdf
- Description:
- IC VOLTAGE FEEDBACK 2 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:304
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Product details
Overview
OPA2889ID from Texas Instruments is a dual, low-power, unity-gain stable voltage-feedback operational amplifier with disable control. It delivers 60MHz bandwidth at G = +2V/V, 250V/µs slew rate, ±4V output swing into 100Ω, and 460µA/ch quiescent current on ±5V supplies - enabling high-fidelity RGB line driving and single-supply ADC input buffering in space-constrained industrial and portable systems.
For engineers reviewing the OPA2889ID datasheet, OPA2889ID pinout, OPA2889ID application, or OPA2889ID equivalent, key selection criteria include its wideband ±5V operation, low-disable-current capability (18µA/ch), differential gain/phase performance (0.06%/0.04°), channel-to-channel crosstalk (–85dB), and SO-8 package compatibility with thermal resistance θJA = 100°C/W.
Technical Context
The OPA2889ID employs a novel voltage-feedback architecture that decouples transconductance from fixed-bias current steering, enabling 250V/µs slew rate without sacrificing unity-gain stability. Its internal compensation supports stable operation from G = +1V/V to ≥+20V/V across ±1.3V to ±6V dual supplies or +2.6V to +12V single supply.
Each channel integrates independent disable logic with 200ns enable time and 70µs disable time, delivering <20µA/ch power-down current while placing the output in high-impedance state. Input stage features 170MΩ||0.8pF common-mode impedance and 3.5MΩ||0.5pF differential impedance, supporting precision DC-coupled applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 60MHz at G = +2V/V - enables full-power video and imaging signal fidelity up to 1080p60 timing. |
| Slew Rate | 250V/µs - supports clean 2VPP step response with 6ns rise/fall time for fast transient immunity. |
| Output Swing | ±4V no load on ±5V - provides 8VPP headroom for ADC driver interfaces requiring rail-to-rail dynamic range. |
| Quiescent Current | 460µA per channel - allows dual-channel operation under 1mA total supply current for battery-powered instrumentation. |
| Disable Current | 18µA per channel - reduces system standby power by >98% versus active mode, critical for duty-cycled receivers. |
| Differential Gain/Phase | 0.06% / 0.04° - meets SMPTE 259M broadcast video linearity requirements for analog RGB or CVBS paths. |
| Channel Crosstalk | –85dB at 5MHz - ensures isolated dual-channel operation in differential signaling or multi-channel data acquisition. |
Pinout & Package
OPA2889ID is packaged in an 8-pin SOIC (SO-8) with exposed pad not present. The package measures 4.9mm × 6.0mm × 1.75mm and supports reflow soldering per JEDEC J-STD-020. Thermal resistance θJA = 100°C/W enables operation up to +85°C ambient without forced airflow.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (+VS) | Positive Supply | Accepts +2.6V to +12V single or +1.3V to +6V dual supply; connects to local 0.1µF bypass capacitor. |
| 2 (Out B) | Channel B Output | High-drive, low-impedance output capable of ±40mA sourcing/sinking into 100Ω loads. |
| 3 (–In B) | Channel B Inverting Input | High-impedance node (170MΩ||0.8pF) for feedback network connection in inverting configurations. |
| 4 (+In B) | Channel B Noninverting Input | High-impedance node (170MΩ||0.8pF) for reference or signal injection; matched to –In B for CMRR optimization. |
| 5 (Out A) | Channel A Output | Functionally identical to Out B; supports independent dual-channel operation with <–85dB inter-channel isolation. |
| 6 (–In A) | Channel A Inverting Input | Matches –In B electrical characteristics; used with RF/RG networks for precise gain setting and stability control. |
| 7 (+In A) | Channel A Noninverting Input | DC-coupled input with ±3.9V common-mode range on ±5V supplies; supports rail-sensing and level-shifting topologies. |
| 8 (–VS) | Negative Supply | Accepts –1.3V to –6V; requires separate 0.1µF bypass to ground; not connected in single-supply operation. |
Key Features
| Feature | Design Value |
|---|---|
| Unity-Gain Stable Architecture | Operates robustly at G = +1V/V without external compensation, eliminating risk of oscillation in high-speed buffer designs. |
| Wideband ±5V Operation | Delivers 60MHz bandwidth and 250V/µs slew rate on industry-standard ±5V rails - avoids need for ±12V or high-current supplies. |
| Low-Disable Current Control | Reduces per-channel supply current to <20µA while forcing output to high-Z - enables software-controllable channel shutdown in multi-stage signal chains. |
| Video-Optimized Linearity | 0.06% differential gain and 0.04° differential phase meet broadcast-grade analog video specifications for RGB or Y/C path buffering. |
| Thermally Efficient SO-8 | θJA = 100°C/W allows continuous operation at +85°C ambient with ≤500mW dissipation - suitable for sealed industrial enclosures. |
Applications
| RGB Video Line Driver | Single-Supply ADC Input Buffer |
|---|---|
Use Scenario: Driving three parallel 75Ω coaxial cables from an FPGA or graphics processor RGB output. IC Role / Device Role / Timing Role: Dual-channel OPA2889ID drives R/G and B channels simultaneously; third channel implemented via second device. Use Value: 60MHz bandwidth and 0.06%/0.04° linearity preserve color fidelity and edge sharpness in 1080p60 analog video distribution. | Use Scenario: Conditioning sensor signals prior to sampling by a 16-bit SAR ADC such as ADS8472. IC Role / Device Role / Timing Role: Single-supply buffer (G = +2V/V) referenced to VREF/2, providing drive strength and settling within 25ns to 0.1%. Use Value: ±4V output swing on +5V supply delivers full-scale 8VPP input to ADC, maximizing SNR without clipping. |
| xDSL Line Receiver Channel | Portable Instrumentation Signal Chain |
Use Scenario: Receiving and amplifying upstream/downstream analog signals in ADSL2+ or VDSL2 line cards. IC Role / Device Role / Timing Role: Dual-channel receiver front-end with one channel for upstream (low-noise) and one for downstream (high-drive) paths. Use Value: –85dB channel crosstalk prevents upstream interference from downstream transmit leakage; 250V/µs slew handles burst-mode signaling. | Use Scenario: Battery-powered handheld test equipment requiring dual-channel analog front-end with low power and high accuracy. IC Role / Device Role / Timing Role: Dual op amp performing simultaneous signal conditioning and reference buffering in 4–20mA loop or thermocouple interface. Use Value: 460µA/ch quiescent current extends battery life; ±1.5mV max input offset ensures <0.1% measurement error over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual wideband op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2890ID | Higher slew rate (1800V/µs), current-feedback architecture, not unity-gain stable - requires minimum G = +2V/V. | Requires redesign of feedback network; unsuitable for G = +1V/V buffers or DC-coupled integrators. | Select OPA2890ID only when >100MHz bandwidth and >1000V/µs slew are mandatory and gain ≥+2V/V is acceptable. |
| OPA2690ID | Current-feedback design with 1800V/µs slew and 1.8GHz GBW; higher quiescent current (3.5mA/ch). | Not unity-gain stable; incompatible with low-gain, high-precision, or DC-coupled topologies. | Choose OPA2690ID for ultra-high-speed AC-coupled signal paths where power efficiency is secondary to bandwidth. |
Compared with OPA2890ID and OPA2690ID, the OPA2889ID uniquely combines unity-gain stability, 250V/µs slew, and 460µA/ch power - making it the only option among the three for low-power, DC-accurate, wideband dual op amp applications without gain constraints.
Availability
OPA2889ID is available at Aetrix Electronics and suitable for RGB video line driving, single-supply ADC buffering, and xDSL line receiver applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for OPA2889ID 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 company headquartered in Dallas, Texas, designing and manufacturing analog and embedded processing chips for industrial, automotive, and communications markets.
The OPA2889ID belongs to TI's precision high-speed op amp product line, engineered specifically for applications demanding unity-gain stability, low power, and video-grade linearity in dual-channel form factors.
FAQ
What supply voltage ranges does the OPA2889ID support?
The OPA2889ID operates from ±1.3V to ±6V dual supplies or +2.6V to +12V single supply. At ±5V, it delivers 60MHz bandwidth and 250V/µs slew rate; at +5V single supply, bandwidth reduces to 50MHz but retains ±3.85V output swing and 200V/µs slew rate - enabling flexible deployment across legacy and modern power architectures.
Does the OPA2889ID require external compensation for unity-gain stability?
No, the OPA2889ID is internally compensated for unity-gain stability. It remains stable at G = +1V/V without external components, verified across temperature (–40°C to +85°C) and capacitive loads up to 100pF. This eliminates design risk in high-speed buffer and follower configurations where phase margin is critical.
How does the disable function operate on the OPA2889ID?
The OPA2889ID does not include a disable pin in the SO-8 (D) package - disable functionality is exclusive to the MSOP-10 (DGS) variant. For OPA2889ID, both channels remain permanently enabled; system-level power gating must be implemented externally using supply switching or enable logic upstream of the device.
What is the maximum output current capability of the OPA2889ID?
The OPA2889ID delivers ±40mA output current per channel into 100Ω loads at ±5V supplies, with peak short-circuit current of ±60mA. Output voltage swing degrades to ±3.3V under this load, maintaining >1% THD at 1MHz - sufficient for driving 75Ω video lines or multiplexed ADC inputs without external buffers.
Is the OPA2889ID suitable for driving ADC inputs in single-supply systems?
Yes, the OPA2889ID supports single-supply operation down to +2.6V and delivers ±3.85V output swing on +5V supply - ideal for biasing around VREF/2 in 16-bit SAR ADCs like ADS8472. Its 25ns 0.1% settling time and 0.06% differential gain ensure accurate digitization of fast, high-resolution analog waveforms without post-processing correction.
OPA2889ID 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:
- 2
- Output Type:
- -
- Slew Rate:
- 250V/µs
- Gain Bandwidth Product:
- 75 MHz
- -3db Bandwidth:
- 115 MHz
- Current - Input Bias:
- 150 nA
- Voltage - Input Offset:
- 1.5 mV
- Current - Supply:
- 920µA (x2 Channels)
- Current - Output / Channel:
- 60 mA
- Voltage - Supply Span (Min):
- 2.6 V
- Voltage - Supply Span (Max):
- 12 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
OPA2889ID FAQ
1.How can I place an order for OPA2889ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2889ID 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 OPA2889ID reliable?
The price and inventory of OPA2889ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2889ID is usually 5 days.
3.What payment methods are accepted for OPA2889ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2889ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2889ID?
OPA2889ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2889ID 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 OPA2889ID?
For technical support, including OPA2889ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2889ID requirements.
6.How does Aetrix verify that OPA2889ID is sourced from the original manufacturer or authorized distributors?
All OPA2889ID 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 OPA2889ID meets industry standards.
7.What is the process for return or replacement of OPA2889ID?
All OPA2889ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA2889ID, 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 OPA2889ID part is unused and in its original packaging.
Return procedure for OPA2889ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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