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Texas Instruments TL034CD
- Part No.:
- TL034CD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL034CD.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:485
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Product details
Overview
TL034CD from Texas Instruments is a quad FET-input operational amplifier optimized for low-power, low-offset precision analog signal conditioning in industrial and energy systems. It delivers 1.1 MHz unity-gain bandwidth, ±15 V supply operation, 1012 Ω input resistance, 2.9 V/μs slew rate (positive), and 0.79 mV max input offset voltage at 25°C - enabling high-impedance sensor interfacing in solar inverters and motor drive feedback loops.
For engineers reviewing the TL034CD datasheet, TL034CD pinout, TL034CD application, or TL034CD equivalent, this page provides verified specifications, SOIC-14 package layout, real-world use cases in AC drive control and UPS monitoring, and two validated alternative op-amps with documented parameter trade-offs for design flexibility.
Technical Context
The TL034CD uses TI's enhanced LinCMOS™ FET process to achieve micropower operation (120–280 μA per amplifier) while improving DC accuracy and AC performance over legacy TL06x amplifiers. Its JFET input stage enables ultra-low input bias current (10–200 pA) and high common-mode rejection (75–94 dB), critical for precision instrumentation front-ends.
Designed for dual-supply operation, it requires careful attention to common-mode input range (−11.5 V to +14 V at ±15 V supplies) and output swing limits (±12.5 V min into 10 kΩ). Single-supply use demands external DC biasing and virtual-ground generation via devices like the TLE2426.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±5 V to ±15 V - supports standard industrial dual-rail power domains without level-shifting. |
| Input Offset Voltage | 0.79 mV max (TL034AC, 25°C) - enables accurate DC-coupled signal amplification in sensor bridges and current-sense circuits. |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for anti-aliasing, active filtering, and closed-loop control up to ~100 kHz. |
| Slew Rate | 2.9 V/μs (positive), 5.1 V/μs (negative) - ensures faithful reproduction of fast transients in motor phase-current sensing. |
| Input Resistance | 1012 Ω - preserves signal integrity when buffering high-impedance piezoelectric or photodiode sensors. |
| Common-Mode Rejection | 75–94 dB - rejects noise from shared ground paths in noisy inverter environments. |
| Supply Current per Amp | 120–280 μA - allows integration into multi-channel, battery-backed monitoring subsystems with minimal thermal impact. |
Pinout & Package
TL034CD is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 6.0 mm, compliant with JEDEC MS-012, suitable for automated SMT assembly and space-constrained PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, channel 1 | Amplified output of first op-amp; drives feedback networks or ADC inputs directly. |
| 1IN– | Inverting Input, channel 1 | High-impedance node for precision inverting configurations (e.g., current-to-voltage conversion). |
| 1IN+ | Non-Inverting Input, channel 1 | Used in buffer, summing, or differential gain stages where source impedance must be preserved. |
| VCC+ | Power supply positive | Connects to +V rail; decoupling capacitor (0.1 μF) required within 1 cm for stability. |
| 2IN+ | Non-Inverting Input, channel 2 | Enables independent signal conditioning for second channel (e.g., voltage sensing in dual-phase UPS). |
| 2IN– | Inverting Input, channel 2 | Supports matched dual-channel feedback topologies in servo drive error amplifiers. |
| 2OUT | Output, channel 2 | Provides isolated output path for channel 2; crosstalk attenuation ≥120 dB prevents inter-channel interference. |
| 3OUT | Output, channel 3 | Third independent output for auxiliary functions such as temperature compensation or reference buffering. |
| 3IN– | Inverting Input, channel 3 | Accepts signals from high-Z sources (e.g., thermistor dividers) without loading error. |
| 3IN+ | Non-Inverting Input, channel 3 | Used in non-inverting gain stages where input common-mode range must stay within −11.5 V to +14 V. |
| VCC– | Power supply negative | Connects to −V rail; symmetric decoupling essential for rail-to-rail output swing integrity. |
| 4IN+ | Non-Inverting Input, channel 4 | Enables fourth independent signal path for redundancy or multi-sensor fusion (e.g., string-level monitoring). |
| 4IN– | Inverting Input, channel 4 | Supports differential input configurations across all four channels with consistent offset behavior. |
| 4OUT | Output, channel 4 | Final buffered output; full 14-pin layout allows compact quad-op-amp implementation without discrete routing. |
Key Features
| Feature | Design Value |
|---|---|
| FET-input architecture | 1012 Ω input resistance and ≤200 pA input bias current enable direct connection to megohm-range sensors without calibration drift. |
| On-chip offset trimming (TL034AC variant) | Reduces max input offset to 0.79 mV - cuts DC error by >50% vs. untrimmed TL034C, improving accuracy in closed-loop current regulation. |
| Enhanced slew rate vs. TL064 | 2.9 V/μs (positive) and 5.1 V/μs (negative) - doubles transient response over TL064 (1.5 V/μs), supporting faster control loop updates. |
| Quad-channel isolation | ≥120 dB crosstalk attenuation between outputs - maintains signal integrity in multi-channel feedback systems without guard traces. |
| Wide supply range | Operates from ±5 V to ±15 V - accommodates both low-voltage logic-compatible interfaces and high-dynamic-range industrial rails. |
Applications
| Solar Energy: String Inverter Monitoring | Motor Drives: AC Drive Current Sensing |
|---|---|
|
Use Scenario: Real-time measurement of string-level DC current and voltage in photovoltaic arrays under variable irradiance and temperature. IC Role / Device Role / Timing Role: Quad op-amp configured as two differential amplifiers (voltage/current) and two buffers for ADC input conditioning. Use Value: 0.79 mV max offset and 1012 Ω input resistance minimize measurement drift and loading error across 100+ kΩ shunt resistors and PV panel leakage paths. |
Use Scenario: Isolated phase-current feedback in three-phase IGBT gate driver modules for HVAC and industrial pumps. IC Role / Device Role / Timing Role: Four independent amplifiers used for three-phase current sensing plus neutral current monitoring or fault detection. Use Value: 2.9 V/μs slew rate and 1.1 MHz bandwidth preserve fast current transients during PWM switching edges, enabling precise torque control. |
| Single-Phase Online UPS: Voltage Regulation | Industrial PLC Analog Input Modules |
|
Use Scenario: Closed-loop regulation of output AC voltage using transformer secondary sensing and digital PWM correction. IC Role / Device Role / Timing Role: Precision difference amplifier comparing sensed output to reference, driving error integrator and DAC interface. Use Value: 75–94 dB CMRR rejects common-mode noise from switching transformers and rectifier harmonics, stabilizing regulation under load transients. |
Use Scenario: Signal conditioning for 4–20 mA current-loop inputs and thermocouple/mV-level sensor interfaces in modular I/O racks. IC Role / Device Role / Timing Role: Quad amplifier array providing gain, filtering, and level-shifting for up to four simultaneous analog channels. Use Value: 120–280 μA per amplifier enables 16-channel modules with <10 mA total quiescent draw, reducing thermal management complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad FET-input operational amplifier applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TL064CD | Higher input offset (6 mV max), lower slew rate (1.5 V/μs), same SOIC-14 package and pinout. | Acceptable for slower, less precise applications (e.g., basic voltage comparators); unsuitable for fast current sensing or low-drift bridge amplification. | Select TL034CD when <1 mV offset and >2 V/μs slew rate are required; TL064CD remains viable for cost-sensitive, non-critical signal paths. |
| TLV2464CD | Rail-to-rail output, 6.4 V/μs slew rate, 2.2 MHz GBW, but higher supply current (600 μA/amp) and lower input resistance (1010 Ω). | Better for single-supply systems and wide-output-swing applications; not ideal for high-Z sensor buffering due to 100× lower input resistance. | Choose TLV2464CD for rail-to-rail output needs in 3.3 V/5 V systems; retain TL034CD for dual-supply, ultra-high-Z, low-power precision roles. |
Compared with TL064CD and TLV2464CD, TL034CD uniquely balances ultra-high input impedance, sub-millivolt offset, and micropower consumption - making it optimal for precision, high-impedance, dual-supply analog front-ends where thermal budget and DC accuracy are jointly constrained.
Availability
TL034CD is available at Aetrix Electronics and suitable for solar inverter monitoring, AC motor drive feedback, and industrial PLC analog input modules requiring stable component supply, long-term lifecycle support, and guaranteed traceability.
Supply support for TL034CD 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-amps and industrial-grade signal chain solutions.
The TL03x family was engineered to upgrade TL06x designs with improved DC accuracy and AC speed at identical power levels - targeting solar, motor control, and UPS applications demanding reliability and low drift over temperature.
FAQ
What is the maximum operating temperature range for TL034CD?
The TL034CD is characterized for operation from 0°C to 70°C (C-suffix grade). Its electrical parameters - including input offset voltage (0.79 mV max), supply current (120–280 μA), and common-mode rejection (75–94 dB) - are fully specified across this range, ensuring predictable performance in commercial and light-industrial environments. For extended temperature operation (−40°C to 85°C), the TL034ID variant is recommended.
Can TL034CD operate from a single supply?
TL034CD is designed for dual-supply operation and does not support true single-supply functionality. When used with a single rail, external DC biasing of inputs and termination of loads to a virtual ground (e.g., via TI's TLE2426) is mandatory. Failure to do so risks violating common-mode input voltage limits (−11.5 V to +14 V at ±15 V) and causes output clipping or instability.
How does TL034CD differ from TL034AC in performance?
TL034CD and TL034AC share identical SOIC-14 packaging and pinout, but TL034AC features on-chip offset-voltage trimming, reducing max input offset to 0.79 mV (vs. 6 mV for TL034C) at 25°C. Both variants maintain the same 1.1 MHz bandwidth, 2.9 V/μs slew rate, and 1012 Ω input resistance - making TL034AC preferred for precision DC-coupled applications.
What is the typical supply current per amplifier in TL034CD?
The TL034CD draws 120–280 μA per amplifier at 25°C under no-load conditions with ±5 V or ±15 V supplies. This micropower consumption enables integration into multi-channel analog modules without exceeding thermal limits - for example, a 4-channel design consumes only 0.48–1.12 mA total, simplifying power budgeting in space-constrained industrial controllers.
Is TL034CD pin-compatible with other quad op-amps in SOIC-14?
TL034CD uses the industry-standard SOIC-14 pinout defined in Figure 4-4 of its datasheet, matching TL064, TL074, and TL084. However, functional compatibility requires verification of key parameters: TL034CD's FET input (1012 Ω) differs from BJT-input TL074/TL084 (200 kΩ), and its 0.79 mV offset is tighter than TL064's 6 mV - so direct substitution may affect DC accuracy and input loading in existing designs.
TL034CD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- J-FET
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 5.1V/µs
- Gain Bandwidth Product:
- 1.1 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 2 pA
- Voltage - Input Offset:
- 790 µV
- Current - Supply:
- 870µA (x4 Channels)
- Current - Output / Channel:
- 40 mA
- Voltage - Supply Span (Min):
- 10 V
- Voltage - Supply Span (Max):
- 30 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL034CD FAQ
1.How can I place an order for TL034CD through Aetrix?
Please submit a Request for Quotation (RFQ) for TL034CD 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 TL034CD reliable?
The price and inventory of TL034CD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL034CD is usually 5 days.
3.What payment methods are accepted for TL034CD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL034CD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL034CD?
TL034CD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL034CD 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 TL034CD?
For technical support, including TL034CD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL034CD requirements.
6.How does Aetrix verify that TL034CD is sourced from the original manufacturer or authorized distributors?
All TL034CD 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 TL034CD meets industry standards.
7.What is the process for return or replacement of TL034CD?
All TL034CD units undergo pre-shipment inspection (PSI). If there is an issue with TL034CD, 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 TL034CD part is unused and in its original packaging.
Return procedure for TL034CD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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