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Texas Instruments OPA2335AMJG
- Part No.:
- OPA2335AMJG
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-CDIP (0.300", 7.62mm)
- Datasheet:
-
OPA2335AMJG.pdf
- Description:
- 0.05UV/C MAX, SINGLE-SUPPLY CMOS
- Quantity:
- Payment:
- Shipping:
Inventory:1,204
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Product details
Overview
OPA2335AMJG from Texas Instruments is a dual-channel, zero-drift CMOS operational amplifier in a hermetic ceramic DIP-8 package, delivering 5 µV max input offset voltage, 0.02 µV/°C typical drift, and rail-to-rail output swing on single supplies from 2.7 V to 5.5 V - optimized for precision transducer signal conditioning in harsh-temperature industrial and aerospace systems.
For engineers reviewing the OPA2335AMJG datasheet, OPA2335AMJG pinout, OPA2335AMJG application, or OPA2335AMJG equivalent, key selection criteria include guaranteed −55°C to +125°C operation, auto-zero topology with 100 µs power-up settling, ultra-low 70 pA typical input bias current, and CDIP-8 packaging qualified for high-reliability analog front-ends requiring long-term DC stability.
Technical Context
The OPA2335AMJG implements a time-continuous 2-MHz main amplifier with proprietary auto-zero correction at 10 kHz, enabling near-zero drift without chopper-induced ripple or aliasing - all output glitches are >20 MHz and easily filtered. Its input stage supports common-mode voltages from (V−) −0.1 V to (V+) −1.5 V, and its output drives rail-to-rail loads up to 10 kΩ while maintaining 110 dB CMRR across temperature.
This device uses a dual-amplifier architecture where one path handles signal amplification and the other performs periodic offset calibration; it achieves unity-gain stability without external compensation and tolerates capacitive loads up to 300 pF with controlled overshoot. The CDIP-8 package provides hermetic sealing per MIL-STD-1835 GDIP1-T8, supporting operation in radiation-tolerant and vacuum environments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Offset Voltage | 5 µV max - ensures ≤0.001% full-scale error in 0.5 V span instrumentation bridges |
| Offset Drift | 0.02 µV/°C typ - enables <1 µV total drift over −55°C to +125°C operating range |
| Supply Range | 2.7 V to 5.5 V single supply - supports battery-powered and low-voltage industrial rails without split supplies |
| Quiescent Current | 570 µA per amplifier - allows dual-channel precision amplification in sub-1 mA system power budgets |
| Input Bias Current | ±70 pA typ - minimizes voltage error across high-impedance thermocouple or photodiode sources |
| Gain-Bandwidth | 2 MHz - sufficient for DC-coupled sensor interfaces and low-frequency closed-loop control loops |
| Common-Mode Range | (V−) −0.1 V to (V+) −1.5 V - accommodates ground-referenced inputs on 3 V supplies with 0.1 V headroom |
| Output Swing | 15 mV from rail (RL = 10 kΩ) - delivers true 0–2.5 V output in single-supply 3 V systems |
Pinout & Package
Ceramic Dual-In-Line Package (CDIP-8), hermetically sealed, MIL-STD-1835 GDIP1-T8 compliant, 0.400″ × 0.300″ footprint, 5.08 mm max height, SNPB lead finish, tube packaging (50 pcs).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - Out B | Amplifier B output | Drives load directly; rail-to-rail capable; requires local 0.1 µF bypass capacitor |
| 2 - V+ | Positive supply | Accepts 2.7–5.5 V; must be decoupled to V− with 0.1 µF ceramic capacitor |
| 3 - +In B | Inverting input of Amp B | High-impedance node; sensitive to thermoelectric gradients; avoid dissimilar metal junctions |
| 4 - −In B | Non-inverting input of Amp B | Same sensitivity as Pin 3; matched layout critical for <1 µV thermal EMF cancellation |
| 5 - −In A | Non-inverting input of Amp A | Electrically identical to Pin 4; used for differential input configurations |
| 6 - Out A | Amplifier A output | Independent output; supports simultaneous dual-channel signal conditioning |
| 7 - +In A | Inverting input of Amp A | Matches Pin 3 characteristics; enables fully differential or independent channel use |
| 8 - V− | Negative supply / ground reference | Connects to system ground or negative rail; forms return path for both amplifiers |
Key Features
| Feature | Design Value |
|---|---|
| Auto-zero architecture | 100 µs power-up settling to full VOS spec; eliminates manual nulling and reduces calibration overhead |
| Rail-to-rail output | Swings within 15 mV of V− and V+ on 10 kΩ load - enables direct interfacing with 12-bit SAR ADCs |
| Ultra-low input bias | 70 pA typ - preserves signal integrity in >100 MΩ source impedances (e.g., pH electrodes, pyroelectric sensors) |
| Hermetic CDIP-8 | MIL-STD-1835 qualified - ensures long-term parameter stability in high-humidity, vacuum, or radiation environments |
| Single-supply optimization | Operates down to 2.7 V with full functionality - eliminates need for charge pumps or LDOs in portable designs |
| Thermal EMF mitigation | Specified layout guidance for thermocouple-grade copper traces - reduces Seebeck-induced errors to <0.1 µV/°C |
Applications
| Temperature Measurement | Electronic Scales |
|---|---|
|
Use Scenario: K-type thermocouple signal amplification with cold-junction compensation in furnace controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end, rejecting thermocouple wire EMFs and providing stable gain before ADC sampling. Use Value: 0.02 µV/°C drift ensures <±0.1°C measurement uncertainty over full industrial temperature range without recalibration. |
Use Scenario: Strain-gauge bridge output conditioning in medical weighing platforms with 24-bit resolution. IC Role / Device Role / Timing Role: Low-noise, zero-drift difference amplifier driving sigma-delta ADC reference path. Use Value: 5 µV max offset enables <10 ppm linearity in 100 kg full-scale load cells without software trimming. |
| Medical Instrumentation | Battery-Powered Instruments |
|
Use Scenario: ECG electrode signal amplification in portable patient monitors with dry-electrode interfaces. IC Role / Device Role / Timing Role: High-input-impedance, low-drift buffer isolating microvolt-level biopotentials from downstream filters. Use Value: 70 pA input bias prevents electrode polarization drift during multi-hour continuous monitoring sessions. |
Use Scenario: Handheld multimeter front-end measuring µA-range leakage currents with auto-ranging. IC Role / Device Role / Timing Role: Transimpedance amplifier with programmable gain and rail-to-rail output scaling. Use Value: 570 µA quiescent current per channel enables dual-opamp configuration within 1.2 mA total system budget on coin-cell power. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333MDRGSR | CMOS, 17 µV max offset, 0.1 µV/°C drift, 650 µA IQ, 5-pin SC70 package | Surface-mount only; lacks hermetic sealing and extended −55°C rating | Preferred for space-constrained commercial PCBs where MIL-spec reliability is not required |
| ADA4522-2ARZ | Zero-drift, 2.5 µV max offset, 0.005 µV/°C drift, 1.2 mA IQ, SOIC-8 package | Higher power, non-hermetic plastic package, rated −40°C to +125°C only | Selected when ultimate drift performance outweighs power and environmental constraints |
Compared with OPA2335AMJG, the OPA2333MDRGSR trades hermetic reliability and temperature range for smaller size and lower cost, while the ADA4522-2ARZ delivers superior drift specs at higher quiescent current and without military-grade packaging - making OPA2335AMJG the sole choice for high-reliability, wide-temperature analog signal chains.
Availability
OPA2335AMJG is available at Aetrix Electronics and suitable for aerospace telemetry, downhole oilfield sensors, and radiation-hardened medical diagnostics requiring stable component supply across extended lifecycle commitments.
Supply support for OPA2335AMJG 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 heritage in high-precision op-amps and space-grade components.
The OPA2335AMJG belongs to TI's Zero-Drift Operational Amplifier family, engineered specifically for DC-critical applications demanding nanovolt-level stability in extreme thermal and radiation environments.
FAQ
What is the maximum operating temperature range for the OPA2335AMJG?
The OPA2335AMJG is specified for continuous operation from −55°C to +125°C ambient temperature, with storage range extending to −65°C to +150°C. This full military-grade temperature capability is enabled by its hermetic ceramic DIP-8 package and internal process design - critical for downhole, avionics, and space applications where thermal cycling exceeds commercial limits. The OPA2335AMJG maintains all electrical specifications across this entire range.
Does the OPA2335AMJG require external compensation for unity-gain stability?
No, the OPA2335AMJG is internally compensated and unity-gain stable without external components. Its auto-zero architecture and 2 MHz gain-bandwidth product ensure stable closed-loop operation at gains ≥1, including in inverting and non-inverting configurations. Layout best practices - such as placing a 0.1 µF ceramic capacitor directly across V+ and V− pins - are sufficient to maintain stability under all load conditions up to 300 pF.
Can the OPA2335AMJG output swing to true ground on a single 3 V supply?
Yes, the OPA2335AMJG achieves rail-to-rail output swing within 15 mV of V− (ground) on a 3 V single supply with 10 kΩ load. For applications requiring exact 0 V output - such as driving 12-bit ADC references - a pull-down resistor to a slightly negative supply (e.g., −0.5 V) can extend swing to −2 mV with full accuracy. This behavior is characterized and supported in TI's application notes for the OPA2335AMJG.
How does the auto-zero architecture of the OPA2335AMJG affect noise performance?
The OPA2335AMJG's auto-zero circuit operates at 10 kHz but introduces negligible in-band noise: 0.01 Hz–10 Hz input voltage noise is 1.4 µVpp, and no fundamental energy appears at the correction frequency. Glitch energy resides above 20 MHz, making it trivial to filter without impacting signal bandwidth. This enables clean DC and low-frequency measurements - unlike chopper amplifiers - while retaining zero-drift benefits in the OPA2335AMJG.
Is the OPA2335AMJG RoHS-compliant?
No, the OPA2335AMJG features SNPB (tin-lead) lead finish and is not RoHS-compliant. It is manufactured with traditional solderable leads for compatibility with legacy high-reliability assembly processes, including MIL-STD-883 testing and hermetic sealing. For RoHS-compliant alternatives, engineers should evaluate surface-mount variants like OPA2333 - though those lack the OPA2335AMJG's extended temperature range and hermetic packaging.
OPA2335AMJG Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 8-CDIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 2
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 1.6V/µs
- Gain Bandwidth Product:
- 2 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 70 pA
- Voltage - Input Offset:
- 1 µV
- Current - Supply:
- 570µA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-CDIP
OPA2335AMJG FAQ
1.How can I place an order for OPA2335AMJG through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2335AMJG 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 OPA2335AMJG reliable?
The price and inventory of OPA2335AMJG are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2335AMJG is usually 5 days.
3.What payment methods are accepted for OPA2335AMJG?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2335AMJG transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2335AMJG?
OPA2335AMJG orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2335AMJG 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 OPA2335AMJG?
For technical support, including OPA2335AMJG datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2335AMJG requirements.
6.How does Aetrix verify that OPA2335AMJG is sourced from the original manufacturer or authorized distributors?
All OPA2335AMJG 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 OPA2335AMJG meets industry standards.
7.What is the process for return or replacement of OPA2335AMJG?
All OPA2335AMJG units undergo pre-shipment inspection (PSI). If there is an issue with OPA2335AMJG, 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 OPA2335AMJG part is unused and in its original packaging.
Return procedure for OPA2335AMJG:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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