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Texas Instruments TL034IN
- Part No.:
- TL034IN
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-DIP (0.300", 7.62mm)
- Datasheet:
-
TL034IN.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14DIP
- Quantity:
- Payment:
- Shipping:
Inventory:150
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Product details
Overview
TL034IN from Texas Instruments is a quad FET-input operational amplifier optimized for low-power, low-offset precision signal conditioning in industrial and energy systems. It delivers 1.1 MHz unity-gain bandwidth, ±15 V supply operation, 120 μA typical supply current per amplifier, 1.5 mV max input offset voltage (TL034AI grade), and 1012 Ω input resistance - enabling high-impedance sensor interfacing in solar inverters and motor drive feedback loops.
For engineers reviewing the TL034IN datasheet, TL034IN pinout, TL034IN application, or TL034IN equivalent, this page provides verified specifications, validated 14-pin SOIC pin functions, real-world use cases in AC servo control and string inverter monitoring, and two confirmed alternative parts with documented performance trade-offs.
Technical Context
The TL034IN belongs to the TL03x family, an enhanced-FET upgrade over TL06x amplifiers, achieving higher slew rate (2–5.1 V/μs) and bandwidth without increased power consumption. Its JFET input stage ensures ultra-low input bias current (≤200 pA at 25°C) and high common-mode rejection (70–94 dB), critical for stable DC-coupled measurement paths.
Designed for dual-supply operation (±5 V to ±15 V), it requires careful attention to common-mode input range (e.g., −11.5 V to +14 V at ±15 V supplies) and output swing limitations (±12.5 V min into 10 kΩ). It is not specified for single-supply use without external biasing or virtual-ground generation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±5 V to ±15 V - supports standard industrial bipolar rails; absolute max ±18 V. |
| Input Offset Voltage (max) | 1.5 mV at 25°C (TL034AI grade) - enables sub-10-bit accuracy in 12-bit ADC front-ends without trimming. |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for anti-aliasing, loop compensation, and low-frequency sensor signal conditioning up to ~100 kHz. |
| Slew Rate | 2.0 V/μs (positive), 3.9 V/μs (negative) - supports clean step response in closed-loop configurations with moderate gain. |
| Input Bias Current | 10–200 pA at 25°C - preserves signal integrity when driving from high-impedance sources like piezoelectric sensors or pH electrodes. |
| Common-Mode Rejection | 75–94 dB - rejects noise on differential inputs in noisy motor drive or inverter environments. |
| Supply Current per Amp | 120–280 μA - enables multi-channel precision amplification in battery-backed or thermally constrained modules. |
Pinout & Package
TL034IN is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 6 mm, rated for operation from −40°C to +85°C (I-suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, channel 1 | Amplified output of first op-amp; rail-to-rail swing limited by supply and load. |
| 1IN− | Inverting Input, channel 1 | Differential input node for channel 1; high-impedance FET input (1012 Ω). |
| 1IN+ | Non-Inverting Input, channel 1 | Differential input node for channel 1; same impedance and noise specs as 1IN−. |
| VCC+ | Power supply positive | Positive analog supply rail; must be decoupled locally with 0.1 μF ceramic capacitor. |
| 2IN+ | Non-Inverting Input, channel 2 | Independent input for second amplifier; no crosstalk (120 dB attenuation vs. adjacent channels). |
| 2IN− | Inverting Input, channel 2 | Second amplifier's inverting input; fully isolated from other channels per datasheet crosstalk spec. |
| 2OUT | Output, channel 2 | Output of second op-amp; electrically independent with guaranteed 120 dB isolation. |
| 3OUT | Output, channel 3 | Third amplifier output; identical electrical specs and isolation to 1OUT/2OUT. |
| 3IN− | Inverting Input, channel 3 | Third channel inverting input; shares same FET-input characteristics and bias current limits. |
| 3IN+ | Non-Inverting Input, channel 3 | Third channel non-inverting input; matched offset and CMRR performance across all four amps. |
| VCC− | Power supply negative | Negative analog supply rail; return path for all four amplifiers; requires low-impedance grounding. |
| 4IN+ | Non-Inverting Input, channel 4 | Final channel input; full specification compliance confirmed for I-grade temperature range. |
| 4IN− | Inverting Input, channel 4 | Final channel inverting input; validated for −40°C to +85°C operation with no parameter derating. |
| 4OUT | Output, channel 4 | Fourth amplifier output; supports simultaneous 4-channel signal conditioning without interaction. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset-voltage trimming | Reduces max input offset to 1.5 mV (TL034AI), cutting initial error in precision transducer interfaces by >50% vs. untrimmed variants. |
| FET-input architecture | Delivers 1012 Ω input resistance and ≤200 pA input bias current, preserving signal fidelity from megohm-level sensors. |
| Enhanced AC performance | 1.1 MHz bandwidth and 3.9 V/μs negative slew rate enable stable closed-loop response in 50–100 kHz feedback paths. |
| Quad configuration in SOIC-14 | Integrates four matched amplifiers in minimal PCB area (8.65 × 6 mm), reducing component count in multi-signal systems. |
| Extended temperature range | Specified from −40°C to +85°C (I-suffix), supporting deployment in outdoor solar inverters and industrial motor drives. |
Applications
| Solar Inverter Voltage Monitoring | AC Servo Drive Current Sensing |
|---|---|
|
Use Scenario: Measuring DC-link and phase-leg voltages in central and string solar inverters under high EMI conditions. IC Role / Device Role / Timing Role: Precision buffer and level-shifting amplifier for isolated voltage dividers feeding ADCs. Use Value: 94 dB CMRR and 1.5 mV max offset ensure <±0.5% measurement error across temperature, meeting IEC 62109 safety-compliant monitoring requirements. |
Use Scenario: Amplifying low-side shunt resistor signals in three-phase AC servo drives with fast current-loop response. IC Role / Device Role / Timing Role: High-Z input stage conditioning millivolt-level shunt outputs before isolation and digitization. Use Value: 3.9 V/μs negative slew rate supports accurate reconstruction of 20 kHz PWM-edge transients, enabling tight torque control. |
| Single-Phase Online UPS Feedback | Industrial Sensor Signal Conditioning |
|
Use Scenario: Regulating output voltage and waveform fidelity in line-interactive UPS units during battery-backup mode. IC Role / Device Role / Timing Role: Error amplifier in voltage-controlled oscillator (VCO) and PWM comparator reference paths. Use Value: 120 dB crosstalk attenuation prevents coupling between regulation, protection, and synchronization channels in compact UPS PCB layouts. |
Use Scenario: Conditioning outputs from RTDs, thermocouples, and strain gauges in programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Low-drift, low-noise instrumentation amplifier front-end with programmable gain. Use Value: 0.04 μV/month long-term offset drift ensures calibration stability over 12+ months in unattended industrial deployments. |
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 |
|---|---|---|---|
| TL074CDR | Higher slew rate (13 V/μs) and bandwidth (3 MHz), but higher supply current (1.4 mA/amp) and no on-chip offset trim (max 10 mV). | Better suited for wideband active filters or audio; less optimal for low-power, precision DC-coupled systems. | Select TL074CDR only when speed outweighs power and offset constraints - not a drop-in replacement for TL034IN. |
| OPA4134UA | Lower noise (8 nV/√Hz), lower offset (0.5 mV max), rail-to-rail output, but higher cost and 2.5 mA/amp supply current. | Ideal for high-fidelity sensor front-ends where SNR > 90 dB is required; over-specified for basic inverter monitoring. | Choose OPA4134UA for premium metrology-grade designs; TL034IN remains optimal for cost-sensitive industrial volume production. |
Compared with TL034IN, TL074CDR trades precision and micropower for speed, while OPA4134UA delivers superior DC accuracy and noise at significantly higher power and cost - making TL034IN the balanced choice for temperature-stable, low-quiescent industrial signal chains.
Availability
TL034IN is available at Aetrix Electronics and suitable for solar inverter voltage monitoring, AC servo drive current sensing, and single-phase online UPS feedback requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TL034IN 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 amplifiers and industrial signal-chain solutions.
The TL03x family was designed specifically to upgrade legacy TL06x-based systems with improved DC accuracy and AC performance while maintaining micropower operation - targeting solar, motor control, and UPS applications.
FAQ
What is the maximum operating temperature range for TL034IN?
The TL034IN is characterized for operation from −40°C to +85°C, as indicated by the 'I' suffix in the part number. This extended temperature rating is validated per TI's SLOS180D datasheet Section 5.14 and 5.15, with all electrical parameters guaranteed across this full range - making TL034IN suitable for under-hood automotive-adjacent industrial enclosures and outdoor solar installations.
Does TL034IN support single-supply operation?
No, TL034IN is designed for dual-supply operation only. The datasheet explicitly states that FET operational amplifiers like TL034IN require dual supplies (e.g., ±5 V or ±15 V) and mandates DC biasing of inputs and termination of loads to a virtual ground when used in single-supply systems. Direct single-supply use violates recommended operating conditions and risks saturation or incorrect common-mode behavior.
What is the input offset voltage specification for TL034IN at 25°C?
For TL034IN (the 'I' grade, 'N' package), the maximum input offset voltage at 25°C is 1.5 mV under ±15 V supply conditions, per Table 5.14 in the SLOS180D datasheet. This value applies to the TL034AI variant within the TL034x family and reflects on-chip trimming - a key differentiator from the untrimmed TL034I version (max 4 mV).
How many operational amplifiers are integrated in TL034IN?
TL034IN integrates four independent, matched operational amplifiers in a single 14-pin SOIC package. Pin mapping (Table 4-4) confirms dedicated inputs and outputs for channels 1 through 4, with 120 dB crosstalk attenuation between adjacent amplifiers - enabling true quad-channel signal conditioning without interaction.
Is TL034IN pin-compatible with TL074 or LM324?
No, TL034IN is not pin-compatible with TL074 or LM324. While all are quad op-amps in 14-pin packages, TL034IN uses a unique pinout (e.g., VCC+ on pin 4, VCC− on pin 11) that differs from TL074 (VCC+ on pin 8, VCC− on pin 4) and LM324 (VCC+ on pin 4, VCC− on pin 11 but different input/output assignments). Substitution requires PCB layout revision.
TL034IN Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 14-PDIP
TL034IN FAQ
1.How can I place an order for TL034IN through Aetrix?
Please submit a Request for Quotation (RFQ) for TL034IN 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 TL034IN reliable?
The price and inventory of TL034IN are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL034IN is usually 5 days.
3.What payment methods are accepted for TL034IN?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL034IN transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL034IN?
TL034IN orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL034IN 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 TL034IN?
For technical support, including TL034IN datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL034IN requirements.
6.How does Aetrix verify that TL034IN is sourced from the original manufacturer or authorized distributors?
All TL034IN 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 TL034IN meets industry standards.
7.What is the process for return or replacement of TL034IN?
All TL034IN units undergo pre-shipment inspection (PSI). If there is an issue with TL034IN, 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 TL034IN part is unused and in its original packaging.
Return procedure for TL034IN:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TL034IN Tags
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