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Texas Instruments OPA140ATDD1
- Part No.:
- OPA140ATDD1
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- Die
- Datasheet:
-
OPA140ATDD1.pdf
- Description:
- IC OPAMP JFET 1 CIRCUIT DIE
- Quantity:
- Payment:
- Shipping:
Inventory:504
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Product details
Overview
OPA140ATDD1 from Texas Instruments is a high-precision, low-noise, rail-to-rail output JFET-input operational amplifier in bare die format. It delivers 11-MHz gain bandwidth, ±0.5-mV max offset voltage, 0.02 µV/°C max drift, 1.8-nA max input bias current, and operates from ±2.25 V to ±18 V or 4.5 V to 36 V supplies-enabling precision signal conditioning in photodiode amplifiers and medical instrumentation.
For engineers reviewing the OPA140ATDD1 datasheet, OPA140ATDD1 pinout, OPA140ATDD1 application, or OPA140ATDD1 equivalent, key selection criteria include its JFET input architecture, 0.02 µV/°C drift specification, rail-to-rail output swing, no phase reversal behavior, and suitability for single-supply 16-bit+ data acquisition systems interfacing with precision ADCs.
Technical Context
The OPA140ATDD1 uses a JFET input stage to achieve ultra-low input bias current (≤1.8 nA) and minimal 1/f noise, critical for high-impedance sensor interfaces. Its rail-to-rail output stage supports full dynamic range utilization with modern low-voltage ADCs, while the input common-mode range extends to the negative rail-enabling true single-supply operation down to 4.5 V.
Designed for stability with capacitive loads up to 100 pF, the OPA140ATDD1 features internal compensation and no phase reversal under overdrive conditions. Its 11-MHz unity-gain bandwidth and 20-V/µs slew rate support fast settling in active filter and precision buffer applications without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Gain Bandwidth | 11 MHz - enables stable closed-loop operation up to 100 kHz with ≥60° phase margin into 10 kΩ || 100 pF. |
| Input Offset Voltage | ±0.5 mV max - ensures ≤0.003% gain error in 16-bit (±10 V FS) data acquisition front-ends. |
| Offset Drift | 0.02 µV/°C max - maintains <1 µV total drift over 0°C–70°C ambient, critical for uncalibrated industrial sensors. |
| Input Bias Current | 1.8 nA max - allows use with >100 MΩ source impedances without significant DC error in photodiode transimpedance stages. |
| Supply Range | ±2.25 V to ±18 V or 4.5 V to 36 V - supports direct interface to 3.3 V, 5 V, and 24 V industrial power rails. |
| Slew Rate | 20 V/µs - achieves <1 µs 0.1% settling for 10 V step, suitable for multiplexed precision DAC output buffering. |
| Output Swing | Rail-to-rail - delivers full-scale output within 20 mV of supply rails at 10 kΩ load, maximizing dynamic range into SAR ADC drivers. |
Pinout & Package
Bare die in waffle pack (TD package), thickness 15 mils, silicon backside, TiW/AlCu metallization (1100 nm). No leadframe or molded package; requires custom die attach and wire bonding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN− | Inverting Input | Differential input node with 1.8 nA max bias current; referenced to V− for single-supply operation. |
| VIN+ | Non-Inverting Input | High-impedance JFET input; common-mode range includes V− rail for ground-referenced sensor interfaces. |
| V− | Negative Supply | Reference for internal biasing; supports operation down to −18 V or ground in single-supply configurations. |
| V+ | Positive Supply | Supports up to +36 V; enables wide dynamic range in battery-powered or industrial 24 V systems. |
| OUT | Amplifier Output | Rail-to-rail CMOS output stage; drives 10 kΩ loads with <20 mV headroom to either rail. |
Key Features
| Feature | Design Value |
|---|---|
| No Phase Reversal | Prevents output latch-up during input overdrive-critical for protection-circuit interfaces and automatic test equipment inputs. |
| Low 1/f Noise | 3 nV/√Hz at 0.1 Hz - minimizes baseline drift in DC-coupled medical ECG/EEG front-ends. |
| Single-Supply Operation | 4.5 V minimum - enables direct use with Li-ion (3.0–4.2 V) and regulated 3.3 V/5 V rails via charge pump or LDO boost. |
| Low Supply Current | 1.8 mA typical - supports battery life >1 year in portable instrumentation with 100 µA avg. system current. |
| Input Voltage Range Includes V− | Allows VIN− and VIN+ to operate at ground potential-eliminates need for level-shifting in sensor signal chains. |
Applications
| Photodiode Amplifiers | Medical Instrumentation |
|---|---|
Use Scenario: Transimpedance amplification of low-current photodiode signals in optical blood oximeters and lab analyzers. IC Role / Device Role / Timing Role: Precision current-to-voltage converter with ultra-low input bias current and 1/f noise. Use Value: Enables detection of sub-nA photocurrents with <1 LSB error in 24-bit sigma-delta ADC systems. | Use Scenario: Front-end amplification of biopotential signals (ECG, EEG) in portable patient monitors. IC Role / Device Role / Timing Role: Low-drift, rail-to-rail output buffer for anti-aliasing filters and ADC drivers. Use Value: Maintains <0.5 µV baseline drift over 8-hour clinical sessions without recalibration. |
| Industrial Controls | Data Acquisition Systems |
Use Scenario: Signal conditioning for RTD and thermocouple inputs in PLC analog I/O modules. IC Role / Device Role / Timing Role: Precision instrumentation amplifier driver with extended common-mode range. Use Value: Supports 4–20 mA loop-powered sensors with 0.01% linearity over −40°C to +85°C. | Use Scenario: Multiplexed analog front-end for 16-channel, 100 kSPS data loggers in test benches. IC Role / Device Role / Timing Role: Fast-settling, low-noise buffer between multiplexer and SAR ADC. Use Value: Achieves <1 µs 0.1% settling after channel switching, enabling full throughput without guardbanding. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision JFET op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA141AIDBVR | Same core architecture but in SOT-23-5 package; 12.5 MHz GBW, 2.2 mA supply current. | Requires PCB layout for surface-mount assembly; lacks bare-die thermal performance and size flexibility. | Preferred when board space permits standard packaging and reflow compatibility is required. |
| ADA4625-1ARZ | Higher 18 MHz GBW, lower 0.9 nA bias current, but 3.3 mA supply current and no V−-rail input capability. | Not suitable for true single-supply sensor interfaces requiring input down to ground; better for dual-supply high-speed filtering. | Select when higher bandwidth and lower bias current outweigh rail-to-rail input and power efficiency needs. |
Compared with OPA140ATDD1, OPA141AIDBVR offers identical precision specs in a manufacturable package but sacrifices die-level integration, while ADA4625-1ARZ trades input rail capability and quiescent current for speed-making OPA140ATDD1 optimal for compact, low-power, ground-referenced precision analog designs.
Availability
OPA140ATDD1 is available at Aetrix Electronics and suitable for photodiode amplifiers, medical instrumentation, and industrial control systems requiring stable component supply across long-lifecycle embedded programs.
Supply support for OPA140ATDD1 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 specializing in analog and embedded processing technologies, with over 90 years of innovation in precision analog design.
The OPA140A product line targets high-accuracy, low-noise signal conditioning in battery-powered and industrial measurement systems where JFET input performance, rail-to-rail output, and thermal stability are essential.
FAQ
What is the maximum operating temperature range for the OPA140ATDD1?
The OPA140ATDD1 bare die is characterized for operation from 0°C to 0°C per TI's Package Option Addendum-indicating it is specified only for room-temperature electrical screening. For extended temperature applications, thermal modeling and customer qualification are required, as AC performance and full parametric testing over temperature are not warranted by Texas Instruments for this die version.
Does the OPA140ATDD1 require external compensation?
No, the OPA140ATDD1 is internally compensated for unity-gain stability. It drives capacitive loads up to 100 pF without oscillation and maintains ≥60° phase margin into 10 kΩ || 100 pF loads-enabling direct use in transimpedance and buffer configurations without added components.
How does the OPA140ATDD1 handle input overvoltage conditions?
The OPA140ATDD1 features no phase reversal: when inputs exceed the supply rails, the output remains well-behaved and does not latch or invert. This behavior prevents system faults in sensor interfaces exposed to transient overvoltages, such as those found in industrial field wiring or ESD-prone medical probe connections.
Can the OPA140ATDD1 be used with a single 3.3-V supply?
No-the OPA140ATDD1 minimum single-supply voltage is 4.5 V. Using it at 3.3 V violates the absolute maximum ratings and results in undefined operation, including reduced output swing, increased distortion, and possible failure to meet offset or bandwidth specifications. A 5-V supply or DC-DC boost is required for compliant operation.
What bond pad metallization is used on the OPA140ATDD1 die?
The OPA140ATDD1 die uses TiW/AlCu (0.5% Cu) metallization with 1100 nm thickness on all bond pads. This composition provides reliable aluminum wire bondability and corrosion resistance under controlled humidity and temperature storage conditions typical of bare-die handling environments.
OPA140ATDD1 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- Die
- Packaging:
- Tray
- Product Status:
- Active
- Amplifier Type:
- J-FET
- Number of Circuits:
- 1
- Output Type:
- Rail-to-Rail
- Slew Rate:
- -
- Gain Bandwidth Product:
- 11 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- -
- Voltage - Input Offset:
- -
- Current - Supply:
- -
- Current - Output / Channel:
- -
- Voltage - Supply Span (Min):
- 4.5 V
- Voltage - Supply Span (Max):
- 36 V
- Operating Temperature:
- -
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- -
- Supplier Device Package:
- Die
OPA140ATDD1 FAQ
1.How can I place an order for OPA140ATDD1 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA140ATDD1 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 OPA140ATDD1 reliable?
The price and inventory of OPA140ATDD1 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA140ATDD1 is usually 5 days.
3.What payment methods are accepted for OPA140ATDD1?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA140ATDD1 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA140ATDD1?
OPA140ATDD1 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA140ATDD1 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 OPA140ATDD1?
For technical support, including OPA140ATDD1 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA140ATDD1 requirements.
6.How does Aetrix verify that OPA140ATDD1 is sourced from the original manufacturer or authorized distributors?
All OPA140ATDD1 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 OPA140ATDD1 meets industry standards.
7.What is the process for return or replacement of OPA140ATDD1?
All OPA140ATDD1 units undergo pre-shipment inspection (PSI). If there is an issue with OPA140ATDD1, 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 OPA140ATDD1 part is unused and in its original packaging.
Return procedure for OPA140ATDD1:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
OPA140ATDD1 Tags
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