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Texas Instruments OPA3690IDG4
- Part No.:
- OPA3690IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA3690IDG4.pdf
- Description:
- IC OPAMP VFB 3 CIRCUIT 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,781
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Product details
Overview
OPA3690IDG4 from Texas Instruments is a triple, wideband, voltage-feedback operational amplifier with individual channel disable control. It delivers 220MHz bandwidth at G = +2, 1800V/µs slew rate, ±4.0V output swing on ±5V supplies, and 190mA output current per channel-enabling high-fidelity RGB line driving and ADC input buffering in video and imaging systems.
For engineers reviewing the OPA3690IDG4 datasheet, OPA3690IDG4 pinout, OPA3690IDG4 application, or OPA3690IDG4 equivalent, this page provides verified electrical specifications, SO-16 package terminal mapping, disable timing behavior, differential gain/phase performance for NTSC video, and real-world alternatives for single-supply high-speed analog signal conditioning.
Technical Context
The OPA3690IDG4 uses a novel voltage-feedback architecture with a transconductance-based input stage that enables 1800V/µs slew rate while maintaining unity-gain stability. Its output stage supports ±190mA sourcing/sinking into 100Ω loads with minimal headroom-delivering ±3.9V swing on ±5V supplies and 1V–4V swing on +5V supply.
Each of its three independent amplifiers features a dedicated disable pin (DIS A/B/C) that reduces supply current to <300µA per channel and places the output in high-impedance state within 25ns enable time and 200ns disable time. Input common-mode range extends to ±3.5V on dual supply and 1.5V–3.5V on +5V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Small-Signal Bandwidth (G = +2) | 220MHz min at ±5V - supports >100MHz video baseband and fast-settling ADC driver applications |
| Slew Rate | 1800V/µs min at ±5V - enables clean 4V-step response without slewing distortion |
| Output Current (per channel) | ±190mA min - drives 75Ω video lines or 100Ω ADC inputs directly |
| Differential Gain / Phase | 0.06% / 0.01° typ at NTSC - meets broadcast-grade video fidelity requirements |
| Disable Supply Current | <300µA/ch max - enables dynamic power gating in multi-channel systems |
| Input Voltage Noise | 5.5nV/√Hz typ - low-noise performance suitable for precision signal chains |
| Enable Time | 25ns typ - supports high-speed channel multiplexing and burst-mode operation |
Pinout & Package
OPA3690IDG4 is packaged in a 16-pin SOIC (SO-16) body with standard JEDEC MS-012AC footprint and 1.27mm pitch. Thermal resistance θJA is 100°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (–IN A) | Inverting input, Channel A | Differential input node for first op amp; requires matched source impedance for optimal CMRR |
| 2 (+IN A) | Noninverting input, Channel A | DC-biased input for single-supply operation; accepts 1.5V–3.5V common-mode range on +5V rail |
| 3 (DIS B) | Disable control, Channel B | Active-low logic input; <1.5V disables channel, >3.3V enables; 75µA max bias current |
| 4 (–IN B) | Inverting input, Channel B | Independent input for second amplifier; electrically isolated from other channels |
| 5 (+IN B) | Noninverting input, Channel B | Supports same input voltage range and biasing as Channel A |
| 6 (DIS C) | Disable control, Channel C | Third independent disable pin; identical timing and voltage thresholds as DIS A/B |
| 7 (–IN C) | Inverting input, Channel C | Third amplifier input; no crosstalk coupling to A/B channels beyond –64dB typical |
| 8 (+IN C) | Noninverting input, Channel C | Full 3-channel independence confirmed by input-referred crosstalk spec |
| 9 (DIS A) | Disable control, Channel A | First disable pin; open or HIGH enables operation; LOW forces high-Z output |
| 10 (+VS) | Positive supply | Accepts +5V to +12V single supply or +2.5V to +6V dual supply rail |
| 11 (OUT A) | Output, Channel A | Capable of ±190mA drive into 100Ω; closed-loop output impedance is 0.04Ω at 100kHz |
| 12 (–VS) | Negative supply | Required for dual-supply operation; grounded for single +5V use with proper input biasing |
| 13 (OUT B) | Output, Channel B | Identical drive capability and settling specs as OUT A; 8ns to 0.1% for 2V step |
| 14 (+VS) | Positive supply (redundant) | Second +VS connection for improved PSRR and thermal distribution in SO-16 layout |
| 15 (OUT C) | Output, Channel C | Third independent output; maintains 0.06% differential gain up to 10MHz NTSC video |
| 16 (–VS) | Negative supply (redundant) | Second –VS connection; required for dual supply; tied to ground for single supply |
Key Features
| Feature | Design Value |
|---|---|
| Triple independent amplifiers with per-channel disable | Enables selective power-down of unused video/ADC channels without affecting others |
| 1800V/µs slew rate at ±5V | Preserves transient integrity in 1080p60 RGB signals and fast ADC sampling edges |
| 0.06% differential gain error (NTSC) | Meets SMPTE RP 168 and ITU-R BT.601 color fidelity requirements |
| 220MHz small-signal bandwidth (G = +2) | Supports >100MHz analog bandwidth for HD video reconstruction filters |
| ±190mA output drive per channel | Drives 75Ω coaxial video lines or parallel 100Ω ADC inputs without external buffers |
| 25ns enable time, 200ns disable time | Allows sub-100ns channel switching in time-interleaved ADC front ends |
Applications
| RGB Video Line Driver | High-Speed ADC Input Buffer |
|---|---|
Use Scenario: Driving three 75Ω coaxial cables from an FPGA or graphics processor RGB output. IC Role / Device Role / Timing Role: Triple op amp configured as unity-gain followers with DC-coupled outputs. Use Value: Delivers 0.06% differential gain and 0.01° phase error across NTSC/PAL frequencies while sustaining 190mA peak current per channel. | Use Scenario: Conditioning analog sensor output before sampling by a 100MSPS+ ADC (e.g., TI ADS8411). IC Role / Device Role / Timing Role: Single-supply G = +2 buffer with ac-coupled input and 2.5V common-mode bias. Use Value: Provides 220MHz bandwidth and 12ns 0.02% settling to support accurate sampling of >50MHz IF signals. |
| Medical Imaging Signal Chain | Portable Test Equipment Front End |
Use Scenario: Amplifying outputs from CCD/CMOS image sensors in ultrasound or digital radiography systems. IC Role / Device Role / Timing Role: Triple-channel correlated double sampling (CDS) amplifier with synchronized disable for pixel blanking. Use Value: Enables 190mA pulsed drive into capacitive imaging loads while maintaining <5.5nV/√Hz noise floor for SNR-critical acquisition. | Use Scenario: Signal conditioning in handheld oscilloscopes or spectrum analyzers requiring low-power, high-bandwidth analog paths. IC Role / Device Role / Timing Role: Low-quiescent-current (5.5mA/ch) triple amplifier with disable for battery-operated channel selection. Use Value: Reduces total system supply current by >15mA when two channels are disabled-extending runtime without sacrificing active-channel performance. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed voltage-feedback amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA3691IDBVT | Current-feedback architecture; 300MHz bandwidth but not unity-gain stable; higher input bias current (±15µA vs ±11nA) | Better for fixed-gain >+5 configurations; unsuitable for G = +1 video drivers due to instability risk | Select OPA3691 only when gain ≥+5 and bandwidth >250MHz is required; verify stability with layout-dependent feedback compensation |
| LMH6703MA/NOPB | Single-channel, 1.3GHz GBW, 3000V/µs slew; no disable function; higher supply current (12.5mA vs 5.5mA/ch) | Used where ultimate speed is prioritized over channel count or power gating; lacks triple-channel integration | Choose LMH6703 when single-channel >1GHz bandwidth is needed and board space allows discrete channel replication |
Compared with OPA3691IDBVT and LMH6703MA/NOPB, the OPA3690IDG4 uniquely combines triple-channel integration, unity-gain stability, per-channel disable, and broadcast-grade video linearity-making it optimal for space-constrained, multi-channel, low-power video and data acquisition systems.
Availability
OPA3690IDG4 is available at Aetrix Electronics and suitable for RGB video transmission, high-speed ADC buffering, and medical imaging signal conditioning requiring stable component supply across industrial temperature ranges (–40°C to +85°C).
Supply support for OPA3690IDG4 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, delivering analog and embedded processing solutions for industrial, automotive, and communications markets.
The OPA3690IDG4 belongs to TI's Precision High-Speed Operational Amplifier product line, engineered specifically for demanding video, imaging, and data acquisition applications requiring wide bandwidth, low distortion, and multi-channel integration.
FAQ
What supply voltages does the OPA3690IDG4 support?
The OPA3690IDG4 operates from ±2.5V to ±6V dual supply or +5V to +12V single supply. At ±5V, it delivers ±4.0V output swing into no load and ±3.9V into 100Ω. On +5V supply, output swings from 1.0V to 4.0V with >120mA drive-verified per Electrical Characteristics Table on page 3 of SBOS237G.
How does the disable function work on the OPA3690IDG4?
The OPA3690IDG4 has three independent disable pins (DIS A, DIS B, DIS C). Pulling any DIS pin LOW (<1.5V) reduces that channel's supply current to <300µA and places its output in high-impedance state within 200ns. Leaving DIS pins open or HIGH (>3.3V) enables normal operation. Each channel's disable is fully isolated-no crosstalk or shared power path.
Can the OPA3690IDG4 drive 75Ω video loads directly?
Yes-the OPA3690IDG4 delivers ±190mA per channel and sustains ±3.9V output swing into 100Ω loads on ±5V supply. For 75Ω video lines, it meets SMPTE RP 168 requirements with 0.06% differential gain and 0.01° phase error at NTSC frequencies, as measured in Figure 5 and Table 1 of the SBOS237G datasheet.
What is the small-signal bandwidth of the OPA3690IDG4 at G = +2?
The OPA3690IDG4 achieves 220MHz minimum small-signal bandwidth at G = +2 with ±5V supplies and 190MHz minimum on +5V supply, as specified in the "AC PERFORMANCE" section (page 3) of SBOS237G. This bandwidth remains flat to 0.1dB within 30MHz-critical for preserving video harmonics.
Is the OPA3690IDG4 unity-gain stable?
Yes-the OPA3690IDG4 is explicitly designed and characterized for unity-gain stability, unlike many wideband current-feedback amplifiers. Its internal compensation ensures stable operation at G = +1, as confirmed in the "FEATURES" section and Figure 1 (small-signal frequency response) of SBOS237G.
OPA3690IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 16-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 3
- Output Type:
- Differential
- Slew Rate:
- 1800V/µs
- Gain Bandwidth Product:
- 300 MHz
- -3db Bandwidth:
- 500 MHz
- Current - Input Bias:
- 5 µA
- Voltage - Input Offset:
- 1 mV
- Current - Supply:
- 16.5mA
- 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:
- 16-SOIC
OPA3690IDG4 FAQ
1.How can I place an order for OPA3690IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA3690IDG4 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 OPA3690IDG4 reliable?
The price and inventory of OPA3690IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA3690IDG4 is usually 5 days.
3.What payment methods are accepted for OPA3690IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA3690IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA3690IDG4?
OPA3690IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA3690IDG4 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 OPA3690IDG4?
For technical support, including OPA3690IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA3690IDG4 requirements.
6.How does Aetrix verify that OPA3690IDG4 is sourced from the original manufacturer or authorized distributors?
All OPA3690IDG4 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 OPA3690IDG4 meets industry standards.
7.What is the process for return or replacement of OPA3690IDG4?
All OPA3690IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA3690IDG4, 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 OPA3690IDG4 part is unused and in its original packaging.
Return procedure for OPA3690IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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