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Texas Instruments OPA357AIDDA
- Part No.:
- OPA357AIDDA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA357AIDDA.pdf
- Description:
- IC OPAMP VFB 1 CIRCUIT 8SOPWRPAD
- Quantity:
- Payment:
- Shipping:
Inventory:2,243
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Product details
Overview
OPA357AIDDA from Texas Instruments is a single-channel, rail-to-rail input/output, 250-MHz unity-gain stable CMOS operational amplifier in SOT-23-6 package. It delivers 150 V/µs slew rate, 6.5 nV/√Hz input voltage noise, and >100 mA output current-enabling high-fidelity video buffering, photodiode transimpedance amplification, and high-speed ADC/DAC interface circuits.
For engineers reviewing the OPA357AIDDA datasheet, OPA357AIDDA pinout, OPA357AIDDA application, or OPA357AIDDA equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, application-specific implementation insights, and two confirmed alternative parts with documented functional and application-level differences.
Technical Context
The OPA357AIDDA uses a complementary CMOS input stage (N- and P-channel parallel pairs) enabling rail-to-rail common-mode input range extending 100 mV beyond supply rails. Its class AB output stage supports 100-mV rail-to-rail swing into high-impedance loads and maintains >94 dB open-loop gain at 5 V supply.
A Schmitt-trigger-based Enable pin provides fast 100 ns turn-on / 30 ns turn-off control, reducing quiescent current from 4.9 mA to 3.4 µA per channel during shutdown. Thermal shutdown activates at 160°C junction temperature and resets at 140°C.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Unity-Gain Bandwidth | 250 MHz - enables stable +1-V/V video buffers and wideband active filters without compensation. |
| Slew Rate | 150 V/µs - supports clean 2-V step response in ≤11 ns, critical for high-resolution imaging and laser diode drivers. |
| Input Voltage Noise | 6.5 nV/√Hz at 1 MHz - preserves SNR in low-level photodiode and ultrasound preamplifier stages. |
| Rail-to-Rail I/O | VOUT swings within 100 mV of V+ and V−; VCM extends (V−) −0.1 V to (V+) +0.1 V - maximizes dynamic range in 2.5–5.5 V single-supply systems. |
| Output Current | >100 mA continuous - drives 75-Ω back-terminated video cables or laser diodes directly without external boost. |
| Shutdown IQ | 3.4 µA - extends battery life in portable barcode scanners and handheld medical devices using enable-controlled power gating. |
| Differential Gain/Phase | 0.02% / 0.09° @ NTSC - meets broadcast-grade video fidelity requirements without external trimming. |
Pinout & Package
SOT-23-6 package (2.90 mm × 1.60 mm), thermally enhanced with exposed pad (DBV variant); rated for –40°C to +125°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | Out | Amplifier output; high-current capable (±100 mA), rail-to-rail swing, high-impedance when disabled. |
| 2 | V− | Negative supply terminal; accepts ground or negative rail; common reference for input/output swing and enable logic. |
| 3 | +In | Noninverting input; part of complementary CMOS pair enabling rail-to-rail input range down to (V−) −0.1 V. |
| 4 | −In | Inverting input; matched to +In for precision closed-loop gain; low 3 pA bias current minimizes error in high-Z sensor interfaces. |
| 5 | Enable | Active-high digital control; TTL-compatible threshold (2 V min enable, 0.8 V max disable); enables fast multiplexing or power gating. |
| 6 | V+ | Positive supply terminal; operates from 2.5 V to 5.5 V; supplies internal bias and output stage; decoupling required near pin. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail input stage | Common-mode range extends 100 mV beyond both rails - eliminates level-shifting in single-supply photodiode or DAC output stages. |
| Fast enable/disable | 100 ns turn-on / 30 ns turn-off - allows time-gated signal acquisition in pulsed ultrasound or LIDAR receivers. |
| Video-optimized performance | 0.02% differential gain / 0.09° phase error - meets SMPTE/NTSC standards for RGB and composite video line drivers. |
| Thermal shutdown protection | Triggers at 160°C junction temp, resets at 140°C - prevents latch-up or permanent damage during sustained overload or poor PCB thermal design. |
| Low input bias current | 3 pA typical - ensures <1 µV error in 1 GΩ photodiode transimpedance configurations at room temperature. |
Applications
| Video Processing | Ultrasound Imaging |
|---|---|
Use Scenario: Driving 75-Ω back-terminated coaxial cable for composite or RGB video signals in medical monitors and broadcast equipment. IC Role / Device Role / Timing Role: High-speed buffer and line driver with precise DC-coupled gain and minimal group delay variation. Use Value: 0.02% differential gain and 0.09° phase error preserve color fidelity and timing integrity across full NTSC bandwidth. |
Use Scenario: Low-noise, wideband amplification of echo signals from piezoelectric transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: First-stage transimpedance amplifier with rail-to-rail input to capture weak return pulses near ground or supply rails. Use Value: 6.5 nV/√Hz input noise and 250-MHz bandwidth support high-resolution B-mode imaging up to 15 MHz center frequency. |
| Photodiode Transimpedance | ADC Input Buffer |
Use Scenario: Converting photocurrent from high-impedance silicon photodiodes in optical smoke detectors and spectrometers. IC Role / Device Role / Timing Role: Precision transimpedance amplifier with ultra-low input bias current and wide dynamic range. Use Value: 3 pA input bias current avoids saturation in >1 GΩ feedback resistor configurations; rail-to-rail output accommodates full ADC input range. |
Use Scenario: Driving SAR or pipeline ADC inputs in high-speed data acquisition systems requiring minimal settling error. IC Role / Device Role / Timing Role: Unity-gain stable buffer isolating source impedance from ADC sampling capacitor kickback. Use Value: 30 ns 0.1% settling time and 150 V/µs slew rate ensure accurate sampling of multi-MHz analog waveforms without missing codes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, rail-to-rail op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA355IDBVR | 200-MHz GBW, rail-to-rail output only (not input), no shutdown, 5.5-V max supply. | Lacks enable function and rail-to-rail input - unsuitable for low-voltage single-supply sensor front-ends requiring full input range. | Choose when shutdown and rail-to-rail input are unnecessary and lower power (3.6 mA IQ) is prioritized over bandwidth. |
| LMH6629MA/NOPB | 1.5-GHz GBW, bipolar input, 2.7-nV/√Hz noise, no shutdown, ±5-V supply only. | Higher noise floor at low frequencies, no enable, incompatible with 2.5–3.3 V systems - not drop-in for battery-powered designs. | Choose only for ultra-wideband (>500 MHz) applications where CMOS input limitations are unacceptable and dual-supply is available. |
Compared with OPA355IDBVR and LMH6629MA/NOPB, the OPA357AIDDA uniquely combines 250-MHz bandwidth, true rail-to-rail I/O, integrated shutdown, and 2.5–5.5 V operation - making it the only option among the three suitable for compact, battery-operated video and medical sensing systems requiring full supply rail utilization and power gating.
Availability
OPA357AIDDA is available at Aetrix Electronics and suitable for video processing, ultrasound imaging, photodiode transimpedance amplification, high-speed ADC/DAC interfacing, and optical networking applications requiring stable component supply across industrial and medical product lifecycles.
Supply support for OPA357AIDDA 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 expertise in high-performance op amps and signal chain solutions.
The OPA357AIDDA belongs to TI's OPAx357 family of high-speed CMOS op amps, designed specifically for video, ultrasound, optical networking, and precision high-bandwidth instrumentation where rail-to-rail operation, low noise, and fast enable control are essential.
FAQ
What is the maximum supply voltage for the OPA357AIDDA?
The OPA357AIDDA has an absolute maximum supply voltage (V+ to V−) of 7.5 V. Its recommended operating range is 2.5 V to 5.5 V. Exceeding 7.5 V risks permanent damage. At 5.5 V, it delivers full 250-MHz bandwidth and 150 V/µs slew rate while maintaining rail-to-rail I/O performance - critical for high-fidelity video and laser diode driver applications using the OPA357AIDDA.
Does the OPA357AIDDA support true rail-to-rail input?
Yes, the OPA357AIDDA supports true rail-to-rail input: its common-mode input voltage range extends from (V−) −0.1 V to (V+) +0.1 V, enabled by a parallel N- and P-channel CMOS input stage. This allows direct interfacing with sensors or DACs operating near supply rails - a key capability confirmed in the OPA357AIDDA datasheet Section 7.3.4 and essential for single-supply photodiode and ultrasound front-end designs.
What is the typical output current capability of the OPA357AIDDA?
The OPA357AIDDA delivers >100 mA continuous output current into resistive loads, with peak short-circuit current up to 200 mA. At 5 V supply and 1-kΩ load, output swing remains within 100 mV of both rails. This capability enables direct driving of 75-Ω video cables and laser diodes - a verified specification in the OPA357AIDDA Electrical Characteristics table (Section 6.5) and central to its use in RGB cable drivers and laser diode control circuits.
How does the Enable pin function on the OPA357AIDDA?
The Enable pin on the OPA357AIDDA is an active-high TTL-compatible control: logic high ≥2 V enables normal operation (4.9 mA IQ), logic low ≤0.8 V disables the amplifier (3.4 µA IQ). Turn-on time is 100 ns, turn-off is 30 ns. The pin must be driven - not left floating - and features an internal 100-kΩ pull-up to V+. This fast, low-power enable function is integral to battery-saving architectures in portable barcode scanners and handheld medical devices using the OPA357AIDDA.
Is the OPA357AIDDA suitable for driving 75-Ω video cables?
Yes, the OPA357AIDDA is explicitly characterized for 75-Ω video applications: differential gain is 0.02% and differential phase is 0.09° under NTSC conditions with 150-Ω load (back-terminated 75-Ω cable). Its high output current (>100 mA), rail-to-rail swing, and 250-MHz bandwidth meet broadcast-grade requirements - confirmed in the OPA357AIDDA datasheet Sections 1, 2, and Figure 35. This makes it a proven solution for RGB and composite video line drivers in the OPA357AIDDA application space.
OPA357AIDDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Amplifier Type:
- Voltage Feedback
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 150V/µs
- Gain Bandwidth Product:
- 100 MHz
- -3db Bandwidth:
- 250 MHz
- Current - Input Bias:
- 3 pA
- Voltage - Input Offset:
- 2 mV
- Current - Supply:
- 4.9mA
- Current - Output / Channel:
- 100 mA
- Voltage - Supply Span (Min):
- 2.5 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
OPA357AIDDA FAQ
1.How can I place an order for OPA357AIDDA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA357AIDDA 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 OPA357AIDDA reliable?
The price and inventory of OPA357AIDDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA357AIDDA is usually 5 days.
3.What payment methods are accepted for OPA357AIDDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA357AIDDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA357AIDDA?
OPA357AIDDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA357AIDDA 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 OPA357AIDDA?
For technical support, including OPA357AIDDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA357AIDDA requirements.
6.How does Aetrix verify that OPA357AIDDA is sourced from the original manufacturer or authorized distributors?
All OPA357AIDDA 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 OPA357AIDDA meets industry standards.
7.What is the process for return or replacement of OPA357AIDDA?
All OPA357AIDDA units undergo pre-shipment inspection (PSI). If there is an issue with OPA357AIDDA, 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 OPA357AIDDA part is unused and in its original packaging.
Return procedure for OPA357AIDDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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