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Texas Instruments OPA2335AIDGKTG4
- Part No.:
- OPA2335AIDGKTG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
OPA2335AIDGKTG4.pdf
- Description:
- IC OPAMP ZERO-DRIFT 2CIRC 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,084
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Product details
Overview
OPA2335AIDGKTG4 from Texas Instruments is a dual, zero-drift CMOS operational amplifier optimized for precision single-supply instrumentation applications. It delivers 5 µV max input offset voltage, 0.05 µV/°C max drift, 2 MHz gain-bandwidth, rail-to-rail output swing, and 285 µA per channel quiescent current. Used in medical instrumentation, electronic scales, and battery-powered test equipment where long-term DC accuracy is critical.
For engineers reviewing the OPA2335AIDGKTG4 datasheet, OPA2335AIDGKTG4 pinout, OPA2335AIDGKTG4 application, or OPA2335AIDGKTG4 equivalent, key selection criteria include guaranteed low offset drift over temperature, microsize MSOP-8 packaging, dual-channel configuration without shutdown, and operation from +2.7V to +5.5V with rail-to-rail output capability.
Technical Context
The OPA2335AIDGKTG4 employs auto-zeroing architecture with a time-continuous 2 MHz main amplifier corrected every 100 µs, enabling near-zero drift and stable DC performance across –40°C to +125°C. Its input stage features ultra-low bias current (±200 pA max) and high common-mode rejection (110 dB min), supporting precision transducer signal conditioning.
This dual op amp operates with unity-gain stability and no phase reversal, supports input common-mode range from (V–) – 0.1 V to (V+) – 1.5 V, and achieves 1.6 V/µs slew rate with 110 dB open-loop gain - all while maintaining low noise (1.4 µVPP, 0.01–10 Hz) and robust capacitive load drive.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 5 µV max - ensures minimal DC error in precision amplification paths like bridge sensors or thermocouple interfaces. |
| Offset Drift | 0.05 µV/°C max - guarantees sub-µV thermal drift over full industrial temperature range, critical for unattended measurement systems. |
| Quiescent Current | 570 µA total (285 µA per channel) - enables extended battery life in handheld instruments without sacrificing DC precision. |
| Gain-Bandwidth Product | 2 MHz - supports stable closed-loop gains up to 100× at 20 kHz, suitable for anti-aliasing and sensor signal conditioning. |
| Supply Voltage Range | +2.7 V to +5.5 V - compatible with single-cell Li-ion, 3.3 V logic rails, and low-voltage industrial power domains. |
| Output Swing | Rail-to-rail (15 mV from rail, RL = 10 kΩ) - maximizes dynamic range in single-supply data acquisition front-ends. |
| Common-Mode Rejection | 110 dB min - rejects interference from noisy shared grounds in multi-sensor systems and PCB layouts. |
Pinout & Package
VSSOP-8 (DGK) package: 3.0 mm × 3.0 mm, 0.65 mm pitch, exposed pad optional, JEDEC MO-187 compliant, rated for –40°C to +125°C operation.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 | V+ | Positive supply rail connection; accepts +2.7 V to +5.5 V; requires local 0.1 µF decoupling. |
| 2 | Out A | Amplifier A output; rail-to-rail capable; high-impedance when unused but not internally disconnected. |
| 3 | –In A | Inverting input of Channel A; differential pair node with ±200 pA max bias current and 5 pF common-mode capacitance. |
| 4 | +In A | Non-inverting input of Channel A; matched to Pin 3 for optimal CMRR; sensitive to thermoelectric effects if mismatched layout. |
| 5 | V– | Negative supply rail (typically ground in single-supply); reference for input common-mode range and enable logic (not applicable - no shutdown). |
| 6 | +In B | Non-inverting input of Channel B; electrically isolated from Channel A; shares same V– and V+ references. |
| 7 | –In B | Inverting input of Channel B; identical electrical specs to Pin 3; supports independent dual-channel configurations. |
| 8 | Out B | Amplifier B output; fully independent of Out A; supports simultaneous dual-sensor readout or differential output stages. |
Key Features
| Feature | Design Value |
|---|---|
| Zero-drift auto-zero architecture | Eliminates 1/f noise and thermal drift accumulation, delivering stable offset <5 µV across 150°C ΔT without recalibration. |
| Rail-to-rail output stage | Swings within 15 mV of supply rails under 10 kΩ load, preserving >99% of available dynamic range in 3.3 V systems. |
| Ultra-low input bias current | ±200 pA max over temperature enables direct interfacing with high-impedance sources (e.g., pH electrodes, photodiodes). |
| High open-loop gain | 110 dB min ensures <0.001% gain error in 100× closed-loop configurations, critical for precision gain blocks and integrators. |
| Unity-gain stable, no phase reversal | Guarantees predictable step response and eliminates output inversion risk in high-CL or feedback-critical circuits. |
Applications
| Transducer Signal Conditioning | Medical Instrumentation |
|---|---|
Use Scenario: Amplifying low-level mV outputs from load cells, strain gauges, or pressure bridges in electronic scales and industrial weighing systems. IC Role / Device Role / Timing Role: Dual-channel instrumentation amplifier front-end; Channel A and B configured as matched gain stages for ratiometric bridge excitation and differential sensing. Use Value: 5 µV offset and 0.05 µV/°C drift ensure ≤0.01% full-scale error over temperature - meeting Class III scale accuracy requirements without calibration. |
Use Scenario: Front-end amplification of ECG, EEG, or temperature sensor signals in portable patient monitors and diagnostic devices. IC Role / Device Role / Timing Role: Low-noise, low-drift dual op amp used in biopotential amplifier stages and thermistor linearization circuits. Use Value: 1.4 µVPP (0.01–10 Hz) noise and rail-to-rail output maximize SNR in 3.3 V battery-powered designs while maintaining FDA-grade DC stability. |
| Battery-Powered Test Equipment | Temperature Measurement Systems |
Use Scenario: Precision voltage gain and level-shifting in handheld multimeters, DMM accessories, and portable calibrators. IC Role / Device Role / Timing Role: Dual-channel signal conditioner for autoranging ADC driver and reference buffer functions. Use Value: 570 µA total quiescent current extends 2× AA battery life beyond 200 hours in active measurement mode, verified per TI SBOS245D characterization. |
Use Scenario: Cold-junction compensation and linearization of K-type thermocouples in industrial process controllers and HVAC sensors. IC Role / Device Role / Timing Role: Dual op amp implementing precision difference amplifier and thermistor-based reference circuit (per Figure 3, TI SBOS245D). Use Value: Matched channel drift ensures <0.1°C system-level error over –40°C to +125°C ambient, validated in TI reference design TIPD180. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual precision op amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2333AIDGKR | Lower quiescent current (350 µA total), same zero-drift architecture, but 350 kHz GBW and 0.17 V/µs slew rate. | Better suited for ultra-low-power, low-bandwidth sensor nodes; insufficient for 20 kHz anti-aliasing filters. | Select when battery life outweighs bandwidth needs; avoid for fast-settling data acquisition. |
| AD8629ARZ | Higher offset (10 µV max), higher drift (0.1 µV/°C), SO-8 package only, no MSOP-8 option. | Compatible with legacy SO-8 layouts but lacks guaranteed 0.05 µV/°C drift spec required for Class I metrology. | Choose only if SO-8 footprint is mandatory and 2× offset drift is acceptable in end-equipment certification. |
Compared with OPA2335AIDGKTG4, OPA2333AIDGKR trades bandwidth for lower power, while AD8629ARZ offers broader distributor availability but sacrifices guaranteed drift performance - making OPA2335AIDGKTG4 the only option meeting both 5 µV/0.05 µV/°C and MSOP-8 constraints.
Availability
OPA2335AIDGKTG4 is available at Aetrix Electronics and suitable for medical instrumentation, electronic scales, and battery-powered test equipment requiring stable component supply across extended product lifecycles.
Supply support for OPA2335AIDGKTG4 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 over 90 years of innovation in precision signal chain solutions.
The OPA2335AIDGKTG4 belongs to TI's Zerø-Drift Series, designed specifically for high-accuracy, low-power, single-supply instrumentation applications demanding long-term DC stability without recalibration.
FAQ
What is the maximum operating temperature range for the OPA2335AIDGKTG4?
The OPA2335AIDGKTG4 is specified for continuous operation from –40°C to +125°C, with absolute maximum junction temperature rated at +150°C. This range is validated per TI SBOS245D and supports deployment in automotive under-hood and industrial control environments where ambient extremes occur.
Does the OPA2335AIDGKTG4 include a shutdown function?
No, the OPA2335AIDGKTG4 does not include a shutdown function. It is the non-shutdown dual version of the Zerø-Drift series; shutdown capability is exclusive to the OPA2334 family (e.g., OPA2334AIDGST). The OPA2335AIDGKTG4 draws 570 µA continuously and cannot be disabled via logic control.
What package type and dimensions does the OPA2335AIDGKTG4 use?
The OPA2335AIDGKTG4 uses the DGK package: an 8-pin VSSOP (very small outline package) measuring 3.0 mm × 3.0 mm with 0.65 mm lead pitch, compliant with JEDEC MO-187. It has no exposed thermal pad unless custom-ordered, and its pin 1 marking is a laser-etched dot adjacent to the lead edge.
Can the OPA2335AIDGKTG4 drive capacitive loads?
Yes, the OPA2335AIDGKTG4 can drive capacitive loads up to 300 pF while maintaining stability, as confirmed by TI SBOS245D typical characteristics (Small-Signal Response, CL = 50 pF; Large-Signal Response, CL = 300 pF). For loads >300 pF, external isolation resistance (e.g., 10 Ω in series with output) is recommended.
Is the OPA2335AIDGKTG4 RoHS-compliant and lead-free?
Yes, the OPA2335AIDGKTG4 is RoHS-compliant and lead-free, with NIPDAUAG (nickel-palladium-gold) lead finish per TI's PACKAGE OPTION ADDENDUM. It meets JEDEC Level-2-260°C moisture sensitivity rating and is qualified for standard reflow profiles without special handling.
OPA2335AIDGKTG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- Zero-Drift
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Discontinued at Digi-Key
- 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:
- 285µA (x2 Channels)
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 2.7 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-VSSOP
OPA2335AIDGKTG4 FAQ
1.How can I place an order for OPA2335AIDGKTG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA2335AIDGKTG4 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 OPA2335AIDGKTG4 reliable?
The price and inventory of OPA2335AIDGKTG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA2335AIDGKTG4 is usually 5 days.
3.What payment methods are accepted for OPA2335AIDGKTG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA2335AIDGKTG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA2335AIDGKTG4?
OPA2335AIDGKTG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA2335AIDGKTG4 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 OPA2335AIDGKTG4?
For technical support, including OPA2335AIDGKTG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA2335AIDGKTG4 requirements.
6.How does Aetrix verify that OPA2335AIDGKTG4 is sourced from the original manufacturer or authorized distributors?
All OPA2335AIDGKTG4 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 OPA2335AIDGKTG4 meets industry standards.
7.What is the process for return or replacement of OPA2335AIDGKTG4?
All OPA2335AIDGKTG4 units undergo pre-shipment inspection (PSI). If there is an issue with OPA2335AIDGKTG4, 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 OPA2335AIDGKTG4 part is unused and in its original packaging.
Return procedure for OPA2335AIDGKTG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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