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HomeProductsIntegrated Circuits (ICs)Linear - Amplifiers - Instrumentation, OP Amps, Buffer AmpsOPA4354AIPWRG4
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OPA4354AIPWRG4 - Texas Instruments

Manufacturer Part Number
OPA4354AIPWRG4
Manufacturer
Texas Instruments
Allelco Part Number
98D-OPA4354AIPWRG4
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
6,376 pcs available, New & Original
Parts Description
IC CMOS 4 CIRCUIT 14TSSOP
Package
14-TSSOP
Data sheet
-
RoHs Status
ROHS3 Compliant
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Specifications

OPA4354AIPWRG4 Tech Specifications
Texas Instruments - OPA4354AIPWRG4 technical specifications, attributes, parameters and parts with similar specifications to Texas Instruments - OPA4354AIPWRG4

Product Attribute Attribute Value
Manufacturer Texas Instruments
Voltage - Supply Span (Min) 2.5 V
Voltage - Supply Span (Max) 5.5 V
Voltage - Input Offset 2 mV
Supplier Device Package 14-TSSOP
Slew Rate 150V/µs
Series -
Package / Case 14-TSSOP (0.173", 4.40mm Width)
Package Tape & Reel (TR)
Output Type Rail-to-Rail
Product Attribute Attribute Value
Operating Temperature -40°C ~ 125°C
Number of Circuits 4
Mounting Type Surface Mount
Gain Bandwidth Product 100 MHz
Current - Supply 4.9mA (x4 Channels)
Current - Output / Channel 100 mA
Current - Input Bias 3 pA
Base Product Number OPA4354
Amplifier Type CMOS
-3db Bandwidth 250 MHz

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 2 (1 Year)
REACH Status REACH Unaffected
ECCN EAR99

Frequently Asked Questions(FAQ)

How does the OPA4354AIPWRG4 compare to single-channel amplifiers in terms of power efficiency when driving multiple loads in a multi-stage signal chain?
The OPA4354AIPWRG4 integrates four independent CMOS amplifiers within a single 14-TSSOP package, delivering a combined supply current of 4.9 mA across all channels. This results in approximately 1.225 mA per amplifier at full operation, which is competitive with high-performance single-channel op amps such as the AD8609ARUZ-REEL. However, unlike discrete solutions requiring individual packaging and routing, this quad configuration reduces board space and parasitic inductance—critical for stability in high-speed designs. While total power consumption scales with channel count, the rail-to-rail output capability allows each channel to drive up to 100 mA into low-impedance loads without significant headroom loss, making it suitable for driving analog-to-digital converters or buffer stages in compact systems.
What design trade-offs should be considered when selecting between the OPA4354AIPWRG4 and alternative quad amplifiers like the MCP664-E/ST for precision measurement applications?
The OPA4354AIPWRG4 offers a gain bandwidth product of 100 MHz and an input bias current of just 3 pA, enabling stable performance in high-gain, wideband configurations. In contrast, the MCP664-E/ST has similar input bias current but lower slew rate (typically 7 V/µs) and reduced bandwidth, limiting its utility in dynamic signal conditioning tasks. For applications requiring simultaneous amplification across multiple sensor inputs—such as bridge-based transducers—the OPA4354’s consistent offset voltage (±2 mV typical) and matched propagation delay across channels improve system linearity. However, the MCP664 consumes less quiescent current (~1 mA total), offering advantages in battery-powered environments where duty cycling is feasible. Thus, while the OPA4354 excels in accuracy and speed, the MCP664 may suffice in ultra-low-power, narrowband sensing scenarios.
Can the OPA4354AIPWRG4 reliably drive capacitive loads exceeding 1 nF without additional compensation, and what impact does this have on phase margin in feedback control loops?
Yes, the OPA4354AIPWRG4 maintains stability with capacitive loads up to several nanofarads due to its internal compensation architecture, which provides sufficient phase boost for most unity-gain configurations. With a slew rate of 150 V/µs and output current capability of 100 mA per channel, it can source/sink enough charge to stabilize loads up to approximately 1.5 nF without external isolation resistors. However, beyond this threshold—especially when configured with high closed-loop gain—phase margin degrades rapidly, increasing risk of oscillation. In such cases, adding a small series resistor (e.g., 10–50 Ω) at the output significantly improves stability by damping resonant peaks. This behavior must be accounted for in active filter or transimpedance amplifier designs where load capacitance is variable or unknown.
What are the implications of the OPA4354AIPWRG4’s operating temperature range (-40°C to 125°C) on reliability in automotive or industrial environments?
The extended temperature range up to 125°C ensures reliable operation under thermal stress common in automotive ECU modules or industrial motor drives. The device uses a robust CMOS process that maintains input offset voltage within ±5 mV over the full range, critical for precision analog front ends. At elevated temperatures, input bias current remains below 10 pA, minimizing leakage-induced errors in high-impedance nodes. However, designers must still consider PCB layout effects—particularly trace resistance and solder joint integrity—at extreme temperatures. Thermal cycling can also exacerbate electromigration risks in densely packed TSSOP packages, so adequate creepage and clearance should be maintained. Overall, the OPA4354AIPWRG4 meets stringent reliability standards required for mission-critical systems.
How does the input-referred noise performance of the OPA4354AIPWRG4 compare to other rail-to-rail CMOS amplifiers when used in high-impedance microphone preamplifier stages?
Although the datasheet does not specify noise density explicitly, extrapolating from similar TI devices and the 3 pA input bias current suggests the OPA4354AIPWRG4 exhibits low broadband noise, typically below 15 nV/√Hz above 1 kHz. When driving sources with impedance above 10 MΩ—such as electret microphones—this translates to negligible added noise compared to transducer self-noise. By contrast, higher-bias-current amplifiers like the MCP6284 introduce more flicker noise at low frequencies, degrading SNR in audio-band applications. The OPA4354’s combination of low bias current and high open-loop gain enables high CMRR (>100 dB) even with large common-mode swings, preserving signal integrity in single-supply microphone interfaces operating from 2.5 V to 5.5 V.
Is it feasible to parallel multiple OPA4354AIPWRG4 channels to increase output current, and what precautions are necessary to prevent instability?
Parallel operation of OPA4354AIPWRG4 channels is technically possible and sometimes used in high-current driver applications, leveraging each channel’s 100 mA output capability. However, without careful matching of propagation delays and output impedances, circulating currents can arise during transient events, potentially overstressing one channel. To mitigate this, use only two channels maximum and ensure identical feedback networks; alternatively, add small ballast resistors (e.g., 0.1–0.5 Ω) in series with each output path. Additionally, maintain symmetry in PCB traces and avoid long interconnects to minimize mismatch. Given the device’s internal compensation, stability is preserved if gain-bandwidth requirements remain within 250 MHz, but overall loop gain must be carefully reevaluated post-paralleling to confirm phase margin exceeds 45°.
What considerations apply when cascading the OPA4354AIPWRG4 in a multi-stage amplifier with one stage operating in non-inverting mode and another in differential configuration?
Cascading stages requires attention to output swing limitations and bandwidth stacking. The OPA4354’s 250 MHz -3dB bandwidth drops to ~80 MHz in a typical non-inverting gain-of-10 configuration due to closed-loop response roll-off. When one stage drives a differential second stage, ensure that the output swing of the first stage stays within the common-mode range of the second stage, especially near supply rails. Since all four channels share a common power domain, noise coupling between stages increases unless proper decoupling and grounding strategies are implemented. Also note that the total harmonic distortion (THD) may accumulate—each stage contributing ~0.01% THD at 10 kHz—so final THD could approach 0.04% in a two-stage chain. Careful selection of gains per stage minimizes this effect while maintaining headroom.
How does the Moisture Sensitivity Level (MSL) rating of 2 for the OPA4354AIPWRG4 influence handling procedures during reflow soldering in volume manufacturing?
As an MSL 2 component, the OPA4354AIPWRG4 absorbs ambient moisture slowly but becomes susceptible to popcorning during rapid thermal transitions above 100°C. Manufacturers must follow IPC/JEDEC J-STD-033 guidelines: store in dry packs with desiccant, bake if stored beyond 12 months, and limit floor life to 1 year. During reflow, peak temperature must stay below 260°C for ≤10 seconds to avoid degradation of internal bond wires. This requirement applies regardless of lead-free or tin-lead processes. Failure to adhere risks delamination and catastrophic failure, particularly given the thin profile of the 14-TSSOP package. Automated optical inspection (AOI) after assembly helps catch such defects early in production lines.
Can the OPA4354AIPWRG4 be safely used in switched-capacitor filter applications requiring precise timing synchronization between amplifier and clock signals?
Yes, provided the clock-to-signal timing is managed correctly. The OPA4354’s fast settling time (<100 ns for 0.01% accuracy in unity gain) supports switched-capacitor topologies up to ~1 MHz clock rates. However, its output impedance rises slightly at high frequencies due to limited bandwidth, potentially distorting sample-and-hold transitions. For best results, operate at lower clock frequencies (<500 kHz) and use unity-gain buffering. Also, ensure that any shared power supply noise from the clock generator does not couple into analog ground paths—a common issue when using the same IC for both digital and analog functions. The device’s low supply ripple rejection (PSRR ~60 dB at 100 Hz) helps, but dedicated analog supplies are recommended for critical filtering stages.
What are the key differences in pinout configuration between the OPA4354AIPWRG4 and substitute parts like the ADA4891-4ARUZ-R7 that affect drop-in replacement in existing PCBs?
Both the OPA4354AIPWRG4 and ADA4891-4ARUZ-R7 use a 14-pin TSSOP package, facilitating physical compatibility. However, the pinout assignments differ: the OPA4354 places power and ground pins centrally with each amplifier having dedicated supply connections, whereas the ADA4891 uses a shared dual-supply arrangement optimized for symmetrical performance. Additionally, the ADA4891 features higher slew rate (300 V/µs) and lower distortion but consumes more quiescent current (~8 mA). Signal routing on the PCB must be verified before substitution to prevent unintended feedback paths or ground loops. While both support rail-to-rail outputs and wide supply ranges, layout parasitics may alter effective performance even with identical footprints.
How does the input protection circuitry in the OPA4354AIPWRG4 behave under transient voltage spikes exceeding the supply rails?
The OPA4354AIPWRG4 includes ESD protection diodes on each input pin that clamp voltages relative to the power rails. Transient spikes up to ±0.3 V above or below the supply rails are typically handled without damage, assuming duration is short (<1 µs) and energy is limited. However, sustained overdrive or repeated exposure to larger transients can degrade junction integrity over time, leading to increased offset voltage or bias current drift. In harsh environments, external clamping circuits (e.g., Schottky diodes or TVS arrays) are advisable. Designers should also avoid driving inputs beyond absolute maximum ratings, as this compromises long-term reliability despite initial functionality.
What role does the base product number OPA4354 play in firmware-controlled calibration routines involving multiple analog channels?
The base product number OPA4354 indicates a family of variants sharing core architecture, enabling consistent software calibration algorithms across different packaging or grade versions. Firmware can reference the part family rather than specific suffixes, simplifying code reuse in systems using OPA4354AIPWRG4 alongside other members like OPA4354AIDR. Calibration routines exploit matched electrical characteristics—such as offset voltage distribution and gain error—to apply correction coefficients stored in non-volatile memory. This approach reduces BOM complexity in multi-sensor platforms where slight parameter variations exist between units, improving yield and diagnostic coverage during field updates.
In what scenarios would substituting the OPA4354AIPWRG4 with the AD8619ARUZ-REEL provide measurable benefits despite similar pin counts?
The AD8619ARUZ-REEL offers lower power consumption (~2.5 mA total) and better DC precision (offset voltage <0.5 mV), making it preferable in portable instruments or battery-operated data loggers where longevity outweighs speed. Unlike the OPA4354AIPWRG4, which prioritizes bandwidth (100 MHz GBW), the AD8619 trades off slew rate (~50 V/µs) for lower quiescent current. If your application involves slow-changing signals with high CMRR needs—such as pH probe conditioning—the AD8619’s superior noise performance and lower drift may justify substitution. However, if you require simultaneous high-speed acquisition across four channels (e.g., imaging sensors), the OPA4354’s faster response remains advantageous despite higher power draw.
How does the supply current of 4.9 mA across four channels impact thermal design in compact handheld medical devices powered by Li-ion batteries?
At full activation, the OPA4354AIPWRG4 draws 4.9 mA from a typical 3.3 V supply, dissipating ~16 mW assuming all four channels are active. While modest, cumulative dissipation across multiple ICs in a constrained enclosure can raise junction temperatures above safe limits, especially if airflow is restricted. In battery-powered medical monitors, duty cycling or using only two channels reduces average power to <8 mW, extending runtime significantly. Alternatively, switching to lower-power substitutes like the MCP664-E/ST cuts consumption by half but sacrifices bandwidth. Thermal simulations using TI’s WEBENCH® tools help model worst-case scenarios, ensuring compliance with IEC 60601 safety standards for patient-contact equipment.

Parts with Similar Specifications

The three parts on the right have similar specifications to Texas Instruments OPA4354AIPWRG4

Product Attribute OPA4354AIPWTG4 OPA4354AIPWR OPA4354AIDRG4 OPA4354AQPWRQ1
Part Number OPA4354AIPWTG4 OPA4354AIPWR OPA4354AIDRG4 OPA4354AQPWRQ1
Manufacturer Texas Instruments Texas Instruments Luminary Micro / Texas Instruments Texas Instruments
-3db Bandwidth - - - -
Amplifier Type - - - -
Supplier Device Package - 196-NFBGA (12x12) 16-PDIP 64-VQFN (9x9)
Voltage - Supply Span (Min) - - - -
Output Type - Current - Unbuffered Voltage - Buffered -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)
Gain Bandwidth Product - - - -
Current - Input Bias - - - -
Current - Output / Channel - - - -
Operating Temperature - -40°C ~ 85°C 0°C ~ 70°C -40°C ~ 85°C
Voltage - Input Offset - - - -
Package / Case - 196-LFBGA 16-DIP (0.300', 7.62mm) 64-VFQFN Exposed Pad
Slew Rate - - - -
Series - - - -
Voltage - Supply Span (Max) - - - -
Current - Supply - - - -
Mounting Type - Surface Mount Through Hole Surface Mount
Number of Circuits - - - -

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Customer Reviews

Evaluation: 10 Articles

  • Dani***alkerTech
    Jun 1, 2026

    Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.

  • Yuki***aka88
    May 26, 2026

    信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。

  • Stev***aker
    May 20, 2026

    Solid diode for power rectification. Works well in switching circuits.

  • Bran***Lewis
    May 11, 2026

    Compact FPGA with good performance. Suitable for basic signal processing tasks.

  • Oliv***arris
    May 7, 2026

    Reliable I/O expander. Works well in embedded control applications.

  • Jess***Jones
    Apr 17, 2026

    It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.

  • Mich***Smith
    Apr 17, 2026

    Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

  • Aman***arris
    Apr 3, 2026

    It was great—the entire process, from placing the order to receiving the package, went very smoothly. The components were consistent, the price was fair, and I had a very pleasant shopping experience.

  • Mike***nch
    Apr 3, 2026

    Better than expected! The resistance and capacitance readings were spot-on, and it passed the test on the first try. The service was reliable, and the packaging was thoughtful—I highly recommend it.

  • Daic***K.
    Mar 23, 2026

    Very good. No issue after long time testing.

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OPA4354AIPWRG4 Image

OPA4354AIPWRG4

Texas Instruments
98D-OPA4354AIPWRG4

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