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Texas Instruments OPA890ID
- Part No.:
- OPA890ID
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA890ID.pdf
- Description:
- IC VOLTAGE FEEDBACK 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:300
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Product details
Overview
OPA890ID from Texas Instruments is a unity-gain stable, voltage-feedback operational amplifier with disable control, designed for high-speed analog signal conditioning. It delivers 115MHz small-signal bandwidth (G = +2V/V), 500V/μs slew rate, ±4V output swing on ±5V supplies, and 1.1mA quiescent current - enabling use as an RGB line driver or single-supply ADC input buffer in video, imaging, and instrumentation systems.
For engineers reviewing the OPA890ID datasheet, OPA890ID pinout, OPA890ID application, or OPA890ID equivalent, key selection criteria include its wideband performance under low-power constraints, precise disable functionality (30μA power-down current), differential gain/phase accuracy (<0.06%/0.04°), and compatibility with both ±1.5V–±6V dual and +3V–+12V single supplies.
Technical Context
The OPA890ID employs a novel transconductance-based input stage that dynamically increases compensation capacitor charging current with input error voltage - enabling 500V/μs slew rate without sacrificing unity-gain stability or exceeding 1.1mA quiescent current. This architecture avoids fixed-bias current steering limitations typical of conventional voltage-feedback op amps.
Its disable function operates via a dedicated DIS pin: pulled LOW to reduce supply current to ≤30μA while placing the output in high-impedance state; left open or HIGH for normal operation. The device maintains 70dB off-isolation at 5MHz and exhibits 4pF output capacitance in disabled mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth | 115MHz at G = +2V/V (±5V): enables >100MHz closed-loop video/ADC buffer designs |
| Slew Rate | 500V/μs (±5V): supports 2VPP full-power output at ≥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 max (±5V): enables battery-powered portable instruments with minimal thermal impact |
| Disable Current | 30μA max (VDIS = 0V): reduces system standby power by >97% vs active mode |
| Input Voltage Noise | 8nV/√Hz (f > 100kHz): balances low-noise performance with ultra-wideband capability |
| Differential Gain/Phase | 0.05%/0.03° (RL = 150Ω): meets broadcast video line driving requirements per SMPTE 253M |
Pinout & Package
OPA890ID is packaged in SO-8 (D package), with exposed pad not electrically connected. Pin functions are validated per TI SBOS369B datasheet Figure 1 (top view).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | DIS | Active-low disable control: drives output to high-Z and reduces IQ to ≤30μA when LOW |
| 2 | Inverting Input (–) | Differential input node; matched impedance to noninverting input for offset minimization |
| 3 | Noninverting Input (+) | Differential input node; accepts rail-to-rail common-mode input up to ±3.9V (±5V supply) |
| 4 | –VS | Negative supply connection; supports ±1.5V to ±6V operation |
| 5 | Output | Capable of ±35mA continuous sourcing/sinking into 100Ω load with <0.04Ω closed-loop ZOUT |
| 6 | +VS | Positive supply connection; supports +3V to +12V single-supply operation |
| 7 | NC | No internal connection; must be left unconnected or grounded per layout best practices |
| 8 | NC | No internal connection; must be left unconnected or grounded per layout best practices |
Key Features
| Feature | Design Value |
|---|---|
| Unity-gain stable wideband operation | 260MHz small-signal BW at G = +1V/V ensures stable gain-of-1 configurations without external compensation |
| Flexible supply range | Operates from ±1.5V to ±6V dual or +3V to +12V single supply - simplifies system-level power architecture |
| Low-distortion video drive | 0.05% differential gain / 0.03° differential phase at 1.4VPP enables broadcast-quality RGB/YUV line driving |
| Fast enable/disable timing | 200ns enable time and 7μs disable time support dynamic power gating in multi-channel systems |
| Thermally optimized SO-8 package | θJA = 105°C/W enables >100mW dissipation at +85°C ambient without forced airflow |
Applications
| Video Line Driving | xDSL Line Drivers/Receivers |
|---|---|
|
Use Scenario: Driving 75Ω coaxial cable for RGB, YPbPr, or composite video signals in set-top boxes and monitors. IC Role / Device Role / Timing Role: High-fidelity, low-phase-error buffer amplifying baseband video with minimal group delay variation. Use Value: 0.05% differential gain and 0.03° differential phase preserve color fidelity across NTSC/PAL bandwidths. |
Use Scenario: Transmitting/receiving analog line signals in ADSL2+ and VDSL2 modems over twisted-pair copper. IC Role / Device Role / Timing Role: High-linearity, wideband driver/receiver front-end supporting >30MHz upstream/downstream channels. Use Value: –88dBc 2nd-harmonic distortion at 1MHz/2VPP ensures compliance with ITU-T G.992.5 spectral mask limits. |
| High-Speed Imaging Channels | ADC Buffers |
|
Use Scenario: Conditioning analog outputs from CMOS/CCD image sensors in medical ultrasound or industrial inspection cameras. IC Role / Device Role / Timing Role: Low-noise, fast-settling (10ns to 0.1%) driver for multiplexed sensor readout paths. Use Value: 8nV/√Hz input voltage noise and 16ns settling to 0.02% minimize SNR degradation before digitization. |
Use Scenario: Driving SAR or pipeline ADC inputs in data acquisition systems requiring >10-bit ENOB at ≥10MSPS. IC Role / Device Role / Timing Role: Unity-gain stable, low-output-impedance buffer isolating ADC input from source impedance variations. Use Value: 0.04Ω closed-loop output impedance ensures <0.01% gain error even with 100pF ADC input capacitance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar voltage-feedback op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2890 | Dual-channel version in SO-8; identical AC/DC specs but shares disable pin per channel | Preferred for space-constrained dual-channel systems (e.g., stereo audio, differential ADC drive) | Select OPA2890 when needing two matched OPA890ID channels with independent disable control |
| OPA690 | Higher slew rate (1800V/μs) and bandwidth (400MHz), but 5.5mA IQ; no disable function | Suitable for ultra-high-speed applications where power budget allows and disable is unnecessary | Choose OPA690 only if >300MHz small-signal BW is required and 5× higher quiescent current is acceptable |
Compared with OPA2890 and OPA690, the OPA890ID uniquely balances 115MHz bandwidth, 500V/μs slew rate, and 1.1mA quiescent current with integrated disable - making it optimal for portable, multi-channel, or power-gated high-speed analog signal paths.
Availability
OPA890ID is available at Aetrix Electronics and suitable for video line driving, xDSL line drivers/receivers, and high-speed imaging channels requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for OPA890ID 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 innovation in precision amplifiers and signal chain solutions.
The OPA890ID belongs to TI's high-speed voltage-feedback op amp product line, engineered specifically for low-power, wideband applications including video, communications, and portable instrumentation where unity-gain stability and disable functionality are critical.
FAQ
What supply voltage ranges does the OPA890ID support?
The OPA890ID supports ±1.5V to ±6V dual supplies and +3V to +12V single supplies. At ±5V, it achieves 115MHz bandwidth and 500V/μs slew rate; at +5V single supply, it delivers 105MHz bandwidth and 350V/μs slew rate. Minimum operating voltage is strictly ±1.5V or +3V - operation below these violates absolute maximum ratings.
How does the disable function work on the OPA890ID?
The OPA890ID's DIS pin (Pin 1) is active-low: pulling it LOW disables the amplifier, reducing quiescent current to ≤30μA and placing the output in high-impedance state. Leaving it open or driving it HIGH enables normal operation. Enable time is 200ns; disable time is 7μs. The enable/disable voltage thresholds are specified as ≥3.0V (enable) and ≤1.4V (disable) at +25°C.
What is the maximum output current capability of the OPA890ID?
The OPA890ID delivers ±35mA continuous output current into a 100Ω load at ±5V supplies, with ±40mA minimum sourcing/sinking capability under no-load conditions. Short-circuit output current is ±75mA. For sustained operation, thermal limits (θJA = 105°C/W) constrain power dissipation to ~100mW at +85°C ambient in SO-8 package.
Can the OPA890ID drive capacitive loads, and what is the recommended compensation?
Yes, the OPA890ID can drive capacitive loads up to 100pF with proper series resistance (RS). Figure 15 in the SBOS369B datasheet specifies RS = 1kΩ for CL = 100pF, 47Ω for 47pF, and 22Ω for 22pF. Without RS, instability occurs above ~10pF. The 0.1μF capacitor between +VS and –VS is mandatory for harmonic distortion reduction in PCB layouts.
What are the input voltage range and common-mode rejection specifications for the OPA890ID?
At ±5V supplies, the OPA890ID's common-mode input range is ±3.9V min, allowing inputs within 1.1V of either rail. CMRR is 67dB min at +25°C, degrading to 57dB over –40°C to +85°C. Input impedance is 190kΩ||0.6pF (differential) and 3.2MΩ||0.9pF (common-mode), enabling high-impedance sensor interfacing without significant loading error.
OPA890ID 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:
- 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:
- 40 mA
- 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
OPA890ID FAQ
1.How can I place an order for OPA890ID through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA890ID 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 OPA890ID reliable?
The price and inventory of OPA890ID are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA890ID is usually 5 days.
3.What payment methods are accepted for OPA890ID?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA890ID transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA890ID?
OPA890ID orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA890ID 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 OPA890ID?
For technical support, including OPA890ID datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA890ID requirements.
6.How does Aetrix verify that OPA890ID is sourced from the original manufacturer or authorized distributors?
All OPA890ID 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 OPA890ID meets industry standards.
7.What is the process for return or replacement of OPA890ID?
All OPA890ID units undergo pre-shipment inspection (PSI). If there is an issue with OPA890ID, 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 OPA890ID part is unused and in its original packaging.
Return procedure for OPA890ID:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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