My Inquiry
My Account
Texas Instruments OPA455IDDA
- Part No.:
- OPA455IDDA
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Datasheet:
-
OPA455IDDA.pdf
- Description:
- IC OPAMP GP 1 CIRC 8SOPWRPAD
- Quantity:
- Payment:
- Shipping:
Inventory:1,338
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
OPA455IDDA from Texas Instruments is a high-voltage, unity-gain stable operational amplifier designed for precision high-output-swing signal conditioning in ±6 V to ±75 V (12 V to 150 V) supply systems. It delivers ±45 mA output current, 6.5-MHz gain-bandwidth, 32 V/µs slew rate, and operates across –40°C to +85°C - enabling use in piezo driver stages, avalanche photodiode biasing, and high-voltage Howland current pumps.
For engineers reviewing the OPA455IDDA datasheet, OPA455IDDA pinout, OPA455IDDA application, or OPA455IDDA equivalent, key selection considerations include high-voltage rail-to-rail output swing capability, integrated thermal and overcurrent protection with open-drain status flag, independent enable/disable control referenced to E/D Com, and SO PowerPAD™ package thermal performance for sustained high-power operation.
Technical Context
The OPA455IDDA integrates a high-voltage input stage with internal current limiting and thermal shutdown circuitry that triggers at 150°C junction temperature and recovers at 130°C. Its enable/disable function operates via differential voltage between E/D and E/D Com pins, with disable threshold ≤0.65 V and enable threshold ≥2.5 V above E/D Com.
This op amp uses a fully differential input architecture with no phase inversion, 126–135 dB open-loop gain, 120–128 dB CMRR over ±75 V common-mode range, and 0.03–0.3 µV/V PSRR - supporting accurate amplification in high-common-mode-noise environments such as semiconductor test fixtures and medical instrumentation front-ends.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | ±6 V to ±75 V (or 12 V to 150 V single-supply); enables direct interface with high-voltage DACs and power supplies without level-shifting. |
| Output Current | ±45 mA continuous; supports driving capacitive loads up to 200 pF and resistive loads down to 5 kΩ while maintaining linearity. |
| Gain-Bandwidth Product | 6.5 MHz; ensures stable unity-gain operation and supports closed-loop bandwidths >30 kHz at G = 10 with low distortion. |
| Slew Rate | 32 V/µs; enables full-scale 120-V output steps in ≤5.2 µs with 0.01% settling, critical for fast transient response in test equipment. |
| Input Offset Voltage | ±0.2 mV typical (±3.4 mV max); provides <100 µV error contribution in high-gain precision biasing applications like APD bias control. |
| Status Flag Output | Open-drain, active-low, referenced to E/D Com; allows direct interfacing with 3.3 V or 5 V logic for fault monitoring without level shifters. |
| Enable/Disable Delay | 4 µs disable time / 2.5 µs enable time; permits rapid power gating during idle cycles without disrupting upstream signal paths. |
Pinout & Package
OPA455IDDA is housed in an 8-pin HSOIC (SO PowerPAD™) package measuring 4.89 mm × 3.90 mm, with the exposed PowerPAD thermally and electrically connected internally to V– and requiring soldering to a PCB copper area tied to the negative supply for optimal thermal dissipation (RθJB = 11.3 °C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| E/D | Enable/Disable input | Active-high control relative to E/D Com; ≥2.5 V above E/D Com enables output; ≤0.65 V disables output while preserving input path integrity. |
| E/D Com | Enable/disable common reference | Internal 10-µA current sink to V–; serves as local ground reference for E/D and Status Flag, enabling safe interfacing with low-voltage logic. |
| –IN | Inverting input | Differential input node with 1013 Ω || 6 pF impedance; supports high-impedance sensor interfaces and precision feedback networks. |
| +IN | Noninverting input | Differential input node with 1013 Ω || 3.5 pF impedance; accepts common-mode voltages from (V–)+1 V to (V+)-3 V for wide-range biasing. |
| V– | Negative supply terminal | Connects to lowest system voltage rail; internally bonds to PowerPAD for thermal conduction and electrical return path. |
| V+ | Positive supply terminal | Connects to highest system voltage rail; supports up to 150 V total supply span with robust ESD protection (±3 kV HBM). |
| OUT | Amplifier output | Capable of ±45 mA drive into 5 kΩ load; output impedance rises to 160 kΩ when disabled, minimizing load disturbance during power-down. |
| Status Flag | Fault indicator output | Open-drain output pulled low during overtemperature (>150°C) or overcurrent events; requires external pullup for logic-level signaling. |
Key Features
| Feature | Design Value |
|---|---|
| High-voltage operation | Rated for ±75 V supplies (150 V total), enabling direct integration into high-voltage test and industrial power systems without external boost stages. |
| Thermal and current protection | Integrated shutdown at 150°C junction temperature with automatic recovery at 130°C, plus continuous current limiting to ±45 mA without latch-up. |
| Independent output disable | Preserves input signal path integrity during disable mode, reducing quiescent current to ~1.5–2 mA while isolating downstream loads. |
| No phase inversion | Eliminates output polarity reversal under common-mode overvoltage conditions - critical for stability in high-gain transimpedance or Howland configurations. |
| Low input offset drift | ±4 µV/°C typical (±20 µV/°C max) over –40°C to +85°C; maintains accuracy in unregulated thermal environments like lab instrumentation enclosures. |
Applications
| High-Voltage Piezo Driver | Avalanche Photodiode Biasing |
|---|---|
Use Scenario: Driving piezoelectric actuators requiring ±100-V excitation waveforms with fast step response in semiconductor wafer probing systems. IC Role / Device Role / Timing Role: High-voltage, high-slew-rate output stage delivering precise voltage-controlled displacement with minimal settling error. Use Value: 32 V/µs slew rate and 6.5-MHz GBW support sub-µs positioning steps; ±45 mA drive sustains dynamic load currents without droop. |
Use Scenario: Providing ultra-stable, low-noise reverse-bias voltage to avalanche photodiodes in optical time-domain reflectometers (OTDRs). IC Role / Device Role / Timing Role: Precision high-voltage current source and bias regulator with low 12 µVPP 0.1–10 Hz noise. Use Value: ±0.2 mV typical offset and ±4 µV/°C drift ensure <10 ppm bias stability over temperature; high PSRR rejects supply ripple. |
| Howland Current Pump | Semiconductor Test Fixture Amplifier |
Use Scenario: Implementing floating, high-accuracy current sources for device-under-test (DUT) characterization in parametric analyzers. IC Role / Device Role / Timing Role: Unity-gain stable, high-CMRR op amp forming the core of a four-resistor Howland topology with rail-to-rail compliance. Use Value: 120–128 dB CMRR over ±75 V common-mode range suppresses ground loop errors; no phase inversion prevents instability during DUT fault events. |
Use Scenario: Amplifying DAC outputs in automated test equipment (ATE) to generate programmable ±70-V stimulus signals for IC functional testing. IC Role / Device Role / Timing Role: High-gain, high-output-current gain stage converting low-voltage DAC outputs into high-fidelity, high-swing test waveforms. Use Value: 5.2 µs 0.01% settling on 120-V steps meets ATE timing requirements; status flag enables real-time fault detection during test sequences. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-voltage operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA454IDDA | Lower supply range (±50 V max), 22 V/µs slew rate, no status flag or E/D pins; same SO PowerPAD™ package. | Lacks fault monitoring and output disable - unsuitable for safety-critical or power-gated systems requiring runtime diagnostics. | Select OPA454IDDA only when supply voltage stays ≤±50 V and diagnostic features are unnecessary to reduce BOM cost. |
| LM675T/NOPB | Wider temp range (–40°C to +125°C), but lower 100-mA peak current, no thermal shutdown, no status flag, TO-220 package. | Higher thermal mass and no integrated protection require external heatsinking and discrete fault management circuitry. | Choose LM675T/NOPB only for legacy designs needing higher ambient temperature tolerance and where board space allows TO-220 mounting. |
Compared with OPA454IDDA and LM675T/NOPB, the OPA455IDDA uniquely combines 150-V operation, integrated fault reporting, and output disable in a thermally optimized surface-mount package - making it the only option among the three suitable for modern high-density, self-monitoring test and medical instrumentation.
Availability
OPA455IDDA is available at Aetrix Electronics and suitable for semiconductor test equipment, optical module biasing, lab instrumentation, and multiparameter patient monitors requiring stable component supply across extended voltage and temperature ranges.
Supply support for OPA455IDDA 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 OPA455IDDA belongs to TI's high-voltage precision op amp product line, engineered specifically for applications demanding wide supply range, high output current, and integrated protection - including semiconductor test, medical imaging, and scientific instrumentation.
FAQ
What is the maximum supply voltage rating for the OPA455IDDA?
The OPA455IDDA is rated for absolute maximum supply voltage of 160 V (VS), with recommended operating range from ±6 V to ±75 V (or 12 V to 150 V single-supply). Operation beyond ±75 V risks exceeding absolute maximum ratings and is not supported per datasheet specifications. The device's internal protection circuits are validated only within the specified operating range.
Does the OPA455IDDA require external components to use the Status Flag pin?
Yes - the Status Flag pin is open-drain and requires an external pullup resistor (typically 10 kΩ to 5 V or 3.3 V) to generate a valid logic-level signal. The pin is referenced to E/D Com, not ground, so the pullup must connect to a voltage source compatible with the E/D Com potential - commonly digital supply rails in isolated high-voltage systems using the OPA455IDDA.
Can the OPA455IDDA drive capacitive loads without oscillation?
The OPA455IDDA remains stable driving up to 200 pF capacitive loads in unity-gain configuration, as verified by phase margin measurements in the datasheet. For loads >200 pF, external isolation resistance (RISO) is recommended - e.g., 25 Ω in series with the output - to maintain ≥45° phase margin and prevent peaking or ringing in high-speed applications like piezo actuation.
How does the E/D Com pin function when left unconnected?
When left unconnected, the E/D Com pin is pulled toward V– by an internal 10-µA current source. This establishes a local reference near the negative rail, allowing the E/D pin to be driven from standard logic levels. However, for robust operation - especially at cold temperatures - TI recommends tying E/D Com directly to V– or using a low-impedance connection to avoid noise-induced false disable events.
What is the typical quiescent current of the OPA455IDDA in enabled and disabled states?
In enabled state, the OPA455IDDA draws 3.2–3.7 mA typical quiescent current (IQ) at ±75 V supply. When disabled via the E/D pin, IQ drops to 1.5–2 mA - a reduction of ~50%. This power savings is achieved without disturbing the input stage, preserving signal integrity while protecting downstream loads during idle periods.
OPA455IDDA Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-PowerSOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- -
- Gain Bandwidth Product:
- 6.5 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 30 pA
- Voltage - Input Offset:
- 200 µV
- Current - Supply:
- 3.2mA
- Current - Output / Channel:
- 45 mA
- Voltage - Supply Span (Min):
- 12 V
- Voltage - Supply Span (Max):
- 150 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SO PowerPad
OPA455IDDA FAQ
1.How can I place an order for OPA455IDDA through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA455IDDA 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 OPA455IDDA reliable?
The price and inventory of OPA455IDDA are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA455IDDA is usually 5 days.
3.What payment methods are accepted for OPA455IDDA?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA455IDDA transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA455IDDA?
OPA455IDDA orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA455IDDA 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 OPA455IDDA?
For technical support, including OPA455IDDA datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA455IDDA requirements.
6.How does Aetrix verify that OPA455IDDA is sourced from the original manufacturer or authorized distributors?
All OPA455IDDA 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 OPA455IDDA meets industry standards.
7.What is the process for return or replacement of OPA455IDDA?
All OPA455IDDA units undergo pre-shipment inspection (PSI). If there is an issue with OPA455IDDA, 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 OPA455IDDA part is unused and in its original packaging.
Return procedure for OPA455IDDA:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA455IDDA Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
