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Texas Instruments OPA4336EA/2K5
- Part No.:
- OPA4336EA/2K5
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
OPA4336EA/2K5.pdf
- Description:
- IC CMOS 4 CIRCUIT 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,560
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Product details
Overview
OPA4336EA/2K5 from Texas Instruments is a quad, single-supply, microPower CMOS operational amplifier optimized for battery-powered instrumentation. It features rail-to-rail output swing within 3mV of rails, 20µA per amplifier quiescent current, 125µV max input offset voltage, and operation from 2.3V to 5.5V supply - enabling precision signal conditioning in portable medical devices and photodiode pre-amplifiers.
For engineers reviewing the OPA4336EA/2K5 datasheet, OPA4336EA/2K5 pinout, OPA4336EA/2K5 application, or OPA4336EA/2K5 equivalent, key selection criteria include ultra-low IQ for multi-channel power budgeting, guaranteed rail-to-rail output drive into 100kΩ loads, low input bias current (1pA) for high-impedance sensor interfaces, and SSOP-16 thermal performance (θJA = 100°C/W) in space-constrained layouts.
Technical Context
The OPA4336EA/2K5 implements a unity-gain-stable CMOS input stage with common-mode input range extending to V– – 0.2V, enabling true single-supply operation without level-shifting circuitry. Its 115dB open-loop gain and 100kHz gain-bandwidth product support precision integrator and transimpedance configurations at low frequencies.
All four amplifiers are fully independent with no shared bias networks, minimizing crosstalk (<0.1µV/V channel separation) and ensuring stable operation across mixed-signal channels. The device maintains rail-to-rail output swing (3mV from rails) and 76dB CMRR over –40°C to +85°C, supporting reliable performance in varying ambient conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Quiescent Current | 20µA per amplifier - enables 4-channel analog front-end with <80µA total supply current, critical for coin-cell or energy-harvesting systems. |
| Input Offset Voltage | 125µV max - ensures ≤0.25% error in 50mV full-scale sensor outputs without trimming. |
| Rail-to-Rail Output | Swings within 3mV of V+ and V– with 100kΩ load - maximizes dynamic range in 3.3V or lower supply systems. |
| Input Bias Current | 1pA typical - supports GΩ-range photodiode and electrode impedance interfaces without significant leakage error. |
| Supply Range | 2.3V to 5.5V - operates directly from single Li-ion cell (3.0–4.2V) or regulated 3.3V/2.5V rails without LDO overhead. |
| Gain-Bandwidth Product | 100kHz - sufficient for DC-coupled ECG amplification, pH meter buffering, and slow-scan data acquisition. |
| Operating Temperature | –40°C to +85°C specified - qualified for industrial and portable medical equipment environments. |
Pinout & Package
OPA4336EA/2K5 is housed in a 16-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, optimized for high-density PCB layouts while maintaining manufacturability. Thermal resistance θJA = 100°C/W supports continuous operation in compact enclosures.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (Out D) | Amplifier D output | Drives external load; rail-to-rail swing enables direct interface to ADC reference or low-voltage logic. |
| 2 (–In D) | Amplifier D inverting input | High-impedance node; connects to feedback network or sensor return path in transimpedance design. |
| 3 (+In D) | Amplifier D non-inverting input | Accepts high-Z sensor signals (e.g., pH electrode, thermistor divider) with minimal loading error. |
| 4 (V–) | Negative supply rail | Ground reference for single-supply operation; common return for all four amplifiers. |
| 5 (+In C) | Amplifier C non-inverting input | Independent input for multi-channel sensing; no interaction with other amplifier inputs. |
| 6 (–In C) | Amplifier C inverting input | Supports differential or single-ended configurations; isolated from A/B/D sections. |
| 7 (Out C) | Amplifier C output | Provides second independent output channel; identical AC/DC specs to Out D. |
| 8 (NC) | No connection | Unbonded pad; must remain unconnected to avoid parasitic coupling or ESD path disruption. |
| 9 (Out A) | Amplifier A output | Primary output channel; same rail-to-rail capability and 20µA IQ as all other sections. |
| 10 (–In A) | Amplifier A inverting input | Configurable for inverting gain stages or active filtering; 1pA bias minimizes resistor-induced errors. |
| 11 (+In A) | Amplifier A non-inverting input | Used for unity-gain buffer applications; extends common-mode range to V– – 0.2V. |
| 12 (V+) | Positive supply rail | Accepts 2.3–5.5V; bypassing with 0.01µF ceramic capacitor required for stability. |
| 13 (+In B) | Amplifier B non-inverting input | Enables simultaneous multi-sensor conditioning (e.g., temperature + humidity + pressure). |
| 14 (–In B) | Amplifier B inverting input | Supports precision summing or difference amplification with matched internal components. |
| 15 (Out B) | Amplifier B output | Third independent output; channel separation >140dB prevents crosstalk in sensitive measurements. |
| 16 (NC) | No connection | Unbonded pad; floating connection avoids unintended capacitance or noise pickup. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail output | 3mV from supply rails with 100kΩ load - preserves full ADC input range in 3.3V systems without level-shifting. |
| MicroPower operation | 20µA per amplifier - allows four independent channels on <80µA total, extending battery life in portable diagnostics. |
| Ultra-low input bias current | 1pA typical - eliminates voltage error in GΩ-range photodiode or electrochemical sensor interfaces. |
| Wide supply range | 2.3V to 5.5V - eliminates need for dedicated op-amp supply rail when powered from main system regulator. |
| Quad independent architecture | No shared bias or substrate paths - ensures <0.1µV/V crosstalk between channels for simultaneous multi-parameter monitoring. |
| Single-supply input range | Extends to V– – 0.2V - enables direct connection of sensors referenced to ground without input clamping diodes. |
Applications
| Battery-Powered Medical Sensors | Photodiode Pre-Amplification |
|---|---|
|
Use Scenario: Continuous glucose monitor (CGM) using amperometric enzyme electrodes operating from coin-cell battery. IC Role / Device Role / Timing Role: Quad amplifier configures three channels for temperature compensation, reference electrode buffering, and working electrode transimpedance conversion. Use Value: 20µA per amplifier enables 72-hour runtime on CR2032; rail-to-rail output drives 12-bit SAR ADC directly at 3.0V supply. |
Use Scenario: Low-light optical smoke detector with silicon photodiode requiring femtoampere-level current measurement. IC Role / Device Role / Timing Role: Transimpedance amplifier with 1pA input bias minimizes dark-current error; fourth channel buffers reference voltage. Use Value: 1pA input bias reduces measurement uncertainty by >10× vs. bipolar-input op-amps; 125µV offset limits zero-drift in calibration-free designs. |
| Precision Integrators | Portable Test Equipment |
|
Use Scenario: Handheld multimeter integrating charge from shunt resistor for true RMS current measurement. IC Role / Device Role / Timing Role: Integrator core with 115dB open-loop gain ensures linearity over 4-decade input range; dual sections handle AC/DC paths. Use Value: 100kHz GBW supports 1kHz integration bandwidth; low IQ allows integration function to remain active during sleep mode polling. |
Use Scenario: Portable oscilloscope front-end conditioning four analog channels simultaneously for 8-bit sampling. IC Role / Device Role / Timing Role: Quad buffer isolates probe inputs from multiplexer and ADC; rail-to-rail swing maximizes SNR at 3.3V supply. Use Value: Independent amplifier sections prevent inter-channel crosstalk during fast transient capture; SSOP-16 footprint saves board area vs. four SO-8 devices. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA4340UA/2K5 | Higher quiescent current (250µA/amplifier), wider supply range (2.7–36V), rail-to-rail input/output. | Supports higher-voltage sensor interfaces (e.g., 12V industrial transducers) but consumes 12.5× more current. | Select when input rail-to-rail capability or >5.5V operation is required; not suitable for sub-100µA power budgets. |
| TLV2474CDR | Lower offset (600µV max), higher IQ (600µA/amplifier), same SSOP-16 package. | Targeted at cost-sensitive consumer electronics where µA-level power savings are secondary to price. | Choose for non-battery applications where 125µV offset and 20µA IQ are not mandatory; verify thermal derating at 100°C/W. |
Compared with OPA4336EA/2K5, OPA4340UA/2K5 trades ultra-low power for broader supply and rail-to-rail input, while TLV2474CDR sacrifices precision and efficiency for lower unit cost - making OPA4336EA/2K5 the optimal choice for multi-channel, battery-constrained, high-impedance sensing.
Availability
OPA4336EA/2K5 is available at Aetrix Electronics and suitable for battery-powered medical instruments, portable test equipment, photodiode-based optical sensors, and precision integrator circuits requiring stable component supply across long production lifecycles.
Supply support for OPA4336EA/2K5 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 precision op-amp design and manufacturing reliability.
The OPA336 family - including OPA4336EA/2K5 - was engineered specifically for ultra-low-power, single-supply signal conditioning in portable and battery-operated instrumentation, emphasizing rail-to-rail output, picoampere input bias, and robust operation across industrial temperature ranges.
FAQ
What is the maximum operating supply voltage for OPA4336EA/2K5?
The absolute maximum supply voltage for OPA4336EA/2K5 is 7.5V, but the device is fully specified for operation only from 2.3V to 5.5V. Operating above 5.5V may cause parametric degradation or reliability issues, and the 20µA quiescent current rating applies strictly within the 2.3–5.5V range. For designs using 5.5V supplies, ensure proper decoupling with 0.01µF ceramic capacitors on the V+ and V– pins near the OPA4336EA/2K5 package.
Does OPA4336EA/2K5 support rail-to-rail input operation?
No, OPA4336EA/2K5 does not support rail-to-rail input. Its common-mode input voltage range extends from V– – 0.2V to V+ – 1V, meaning the inputs cannot be driven to the positive rail. However, this architecture enables true single-supply operation with inputs referenced to ground, and the device tolerates input voltages up to 300mV beyond the supply rails without phase inversion - a feature confirmed in the OPA4336EA/2K5 datasheet Figure 1.
Can OPA4336EA/2K5 drive capacitive loads, and what is the recommended approach?
Yes, OPA4336EA/2K5 can drive capacitive loads up to ~300pF in unity-gain configuration without external compensation. For larger loads, TI recommends inserting a 50Ω–100Ω resistor inside the feedback loop (between output and inverting input) to improve phase margin. This technique is validated in the OPA4336EA/2K5 datasheet Figure 3 and maintains DC accuracy while reducing ringing - critical for stable photodiode transimpedance amplifier designs.
What is the thermal resistance (θJA) of the SSOP-16 package used by OPA4336EA/2K5?
The junction-to-ambient thermal resistance (θJA) for OPA4336EA/2K5 in its SSOP-16 package is 100°C/W, as specified in the Electrical Characteristics table on page 4 of the SBOS068C datasheet. This value assumes standard JEDEC 2-layer board conditions; actual thermal performance improves with additional copper pour or thermal vias under the exposed pad (if present) - though the SSOP-16 variant of OPA4336EA/2K5 has no thermal pad.
Is OPA4336EA/2K5 suitable for photodiode pre-amplifier applications?
Yes, OPA4336EA/2K5 is highly suitable for photodiode pre-amplifier applications due to its 1pA typical input bias current, which minimizes dark-current-induced offset errors, and its 125µV max input offset voltage, which reduces calibration drift. Its rail-to-rail output swing ensures full utilization of ADC input range in low-voltage systems, and the quad configuration allows integration of auxiliary functions like reference buffering or temperature compensation alongside the primary transimpedance channel.
OPA4336EA/2K5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- MicroAmplifier™
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Amplifier Type:
- CMOS
- Number of Circuits:
- 4
- Output Type:
- Rail-to-Rail
- Slew Rate:
- 0.03V/µs
- Gain Bandwidth Product:
- 100 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 1 pA
- Voltage - Input Offset:
- 60 µV
- Current - Supply:
- 20µA (x4 Channels)
- Current - Output / Channel:
- 5 mA
- Voltage - Supply Span (Min):
- 2.3 V
- Voltage - Supply Span (Max):
- 5.5 V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SSOP
OPA4336EA/2K5 FAQ
1.How can I place an order for OPA4336EA/2K5 through Aetrix?
Please submit a Request for Quotation (RFQ) for OPA4336EA/2K5 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 OPA4336EA/2K5 reliable?
The price and inventory of OPA4336EA/2K5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for OPA4336EA/2K5 is usually 5 days.
3.What payment methods are accepted for OPA4336EA/2K5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for OPA4336EA/2K5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for OPA4336EA/2K5?
OPA4336EA/2K5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your OPA4336EA/2K5 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 OPA4336EA/2K5?
For technical support, including OPA4336EA/2K5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your OPA4336EA/2K5 requirements.
6.How does Aetrix verify that OPA4336EA/2K5 is sourced from the original manufacturer or authorized distributors?
All OPA4336EA/2K5 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 OPA4336EA/2K5 meets industry standards.
7.What is the process for return or replacement of OPA4336EA/2K5?
All OPA4336EA/2K5 units undergo pre-shipment inspection (PSI). If there is an issue with OPA4336EA/2K5, 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 OPA4336EA/2K5 part is unused and in its original packaging.
Return procedure for OPA4336EA/2K5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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