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Texas Instruments TL034CDR
- Part No.:
- TL034CDR
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TL034CDR.pdf
- Description:
- IC OPAMP JFET 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:601
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Product details
Overview
TL034CDR from Texas Instruments is a quad FET-input operational amplifier optimized for low-power, low-offset precision signal conditioning in industrial and power-conversion systems. It delivers 1.1 MHz unity-gain bandwidth, ±15 V or ±5 V dual-supply operation, 120 μA typical supply current per amplifier, 1.5 mV max input offset voltage (TL034AC grade), and 10¹² Ω input resistance - enabling high-impedance sensor interfacing in solar inverter feedback loops.
For engineers reviewing the TL034CDR datasheet, TL034CDR pinout, TL034CDR application, or TL034CDR equivalent, this page provides verified electrical specifications, SOIC-14 package details, real-world use cases in motor drive control and UPS monitoring, and validated alternative options for design continuity and sourcing flexibility.
Technical Context
The TL034CDR implements enhanced LinCMOS FET-input architecture with on-chip offset-voltage trimming, delivering improved DC accuracy over TL064 while maintaining micropower operation. Its rail-to-rail output swing is not supported; maximum output voltage swing is ±14.955 V at ±15 V supplies with 10 kΩ load.
Designed for dual-supply operation, it requires careful common-mode input voltage management (−11.5 V to +14 V at ±15 V) and virtual-ground biasing when used in single-supply configurations. The device is fully characterized across 0°C to 70°C and specified for stable performance under capacitive loads up to 100 pF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage | ±5 V to ±15 V - supports standard dual-rail industrial power domains without level-shifting circuitry |
| Input Offset Voltage | 0.79 mV max (TL034AC, 25°C) - enables accurate DC-coupled amplification of mV-level sensor signals |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for anti-aliasing, current-sense loop compensation, and line-frequency harmonics filtering |
| Slew Rate | 2.9 V/μs (positive), 5.1 V/μs (negative) - handles fast transient events in motor phase-current sensing |
| Input Resistance | 10¹² Ω - preserves signal integrity when buffering piezoelectric sensors or high-Z pH electrodes |
| Common-Mode Range | −11.5 V to +14 V (at ±15 V) - accommodates wide dynamic range inputs in inverter DC-link monitoring |
| Supply Current | 120–250 μA per amplifier - allows four-channel precision amplification within 1 mA total budget |
Pinout & Package
TL034CDR is supplied in a 14-pin SOIC (D) package measuring 8.65 mm × 6.0 mm, with standard JEDEC MS-012AC footprint and 1.27 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output, channel 1 | Amplified output for first op-amp stage; drives feedback networks or ADC input buffers |
| 1IN− | Inverting Input, channel 1 | High-impedance node for configuring gain-setting resistors in inverting configurations |
| 1IN+ | Non-Inverting Input, channel 1 | Direct connection point for reference or sensor signals requiring minimal loading |
| VCC+ | Power supply positive | Positive rail connection; must be decoupled locally with ≥0.1 μF ceramic capacitor |
| 2IN+ | Non-Inverting Input, channel 2 | Independent input for second channel; usable in differential pair or independent signal paths |
| 2IN− | Inverting Input, channel 2 | Supports dual-channel current sensing or dual-loop control without external multiplexing |
| 2OUT | Output, channel 2 | Second independent output; enables simultaneous monitoring of two phases or rails |
| 3OUT | Output, channel 3 | Third output channel; suitable for auxiliary functions like temperature compensation or fault flag generation |
| 3IN− | Inverting Input, channel 3 | Enables three-channel analog front-end integration in compact space-constrained designs |
| 3IN+ | Non-Inverting Input, channel 3 | Provides third high-Z input for multi-sensor systems such as string-level PV monitoring |
| VCC− | Power supply negative | Negative rail return path; requires low-inductance ground plane connection |
| 4IN+ | Non-Inverting Input, channel 4 | Fourth independent input; supports full quad-channel signal conditioning in UPS battery management |
| 4IN− | Inverting Input, channel 4 | Completes fourth channel; enables four-quadrant error amplification in multi-output SMPS |
| 4OUT | Output, channel 4 | Final output channel; usable for system-level diagnostics, status signaling, or redundancy |
Key Features
| Feature | Design Value |
|---|---|
| On-chip offset trimming | Reduces input offset voltage to ≤1.5 mV (TL034AC), minimizing DC error in closed-loop current sensing |
| FET input stage | Delivers 10¹² Ω input resistance and <200 pA input bias current, preserving signal fidelity from high-Z sources |
| Enhanced slew rate vs. TL064 | 5.1 V/μs negative slew rate enables faithful reproduction of fast transients in motor phase-current waveforms |
| Quad configuration in SOIC-14 | Integrates four independent amplifiers in a single 8.65 mm × 6 mm footprint, reducing PCB area by ~40% vs. discrete singles |
| Specified at ±5 V and ±15 V | Eliminates need for re-characterization when migrating between low-voltage control logic and high-voltage power stages |
Applications
| Solar Inverter String Monitoring | AC Motor Drive Current Sensing |
|---|---|
Use Scenario: Real-time DC-string voltage and current measurement in central inverters with multiple MPPT channels. IC Role / Device Role / Timing Role: Quad amplifier configures two differential current sense amps and two voltage monitor amps for simultaneous string-level feedback. Use Value: 1.1 MHz bandwidth resolves harmonic content up to 10 kHz; 120 μA/channel current enables always-on monitoring without thermal derating. | Use Scenario: Phase-current acquisition in 3-phase IGBT gate driver feedback loops for field-oriented control. IC Role / Device Role / Timing Role: Three channels condition shunt-resistor outputs; fourth channel monitors DC-link voltage for overvoltage protection. Use Value: 5.1 V/μs negative slew rate captures rapid current spikes during short-circuit events; 10¹² Ω input resistance avoids shunt calibration drift. |
| Single-Phase Online UPS | Battery Management System (BMS) |
Use Scenario: Dual-path analog monitoring of AC input/output voltage and battery charge/discharge current in line-interactive UPS units. IC Role / Device Role / Timing Role: Two channels measure input/output RMS voltage via precision rectifier; two channels sense bidirectional battery current. Use Value: Common-mode range of −11.5 V to +14 V at ±15 V supports direct connection to transformer secondary windings without attenuation. | Use Scenario: Cell voltage balancing and temperature-compensated charge control in 12S Li-ion battery packs. IC Role / Device Role / Timing Role: Four amplifiers buffer cell voltage taps, compare against reference, drive balancing FETs, and condition thermistor signals. Use Value: 0.79 mV max offset ensures ≤0.5% voltage measurement error across 4.2 V cells; 120 μA/channel enables low-power sleep-mode monitoring. |
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 |
|---|---|---|---|
| TL064CDR | Higher input offset (15 mV max), lower slew rate (3.5 V/μs), no on-chip trimming | Acceptable where cost sensitivity outweighs precision requirements; unsuitable for sub-mV error budgets | Select TL064CDR only if legacy design reuse or BOM cost reduction is primary; verify offset drift impact on long-term calibration stability |
| TLC27M4CDR | Lower supply current (110 μA/ch), wider temp range (−40°C to 125°C), but reduced CMRR (80 dB) | Better suited for automotive under-hood environments; less effective in noisy industrial EMI environments | Choose TLC27M4CDR for extended temperature operation or ultra-low power; confirm CMRR adequacy for high-noise motor drive applications |
Compared with TL034CDR, TL064CDR trades precision and speed for cost, while TLC27M4CDR extends temperature capability and reduces quiescent current at the expense of common-mode rejection - making TL034CDR optimal for industrial power-conversion applications demanding balanced performance across accuracy, speed, and noise immunity.
Availability
TL034CDR is available at Aetrix Electronics and suitable for solar inverter string monitoring, AC motor drive current sensing, and single-phase online UPS applications requiring stable component supply, long-lifecycle support, and consistent parametric performance across production batches.
Supply support for TL034CDR 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 power management ICs.
The TL03x family was engineered to upgrade TL06x-based designs with higher AC performance and tighter DC specifications while retaining micropower operation - targeting industrial instrumentation, energy conversion, and motor control systems.
FAQ
What is the maximum operating temperature range for TL034CDR?
The TL034CDR is characterized for operation from 0°C to 70°C (C-suffix grade). It meets all electrical specifications across this full industrial temperature range, including input offset voltage, common-mode rejection ratio, and supply current. Operation outside this range may result in parameter degradation or non-compliance with datasheet limits.
Does TL034CDR support single-supply operation?
TL034CDR is designed for dual-supply operation and does not feature rail-to-rail input or output. When used with a single supply, DC biasing of both inputs to mid-supply and termination of loads to a virtual ground (e.g., using TI's TLE2426) is required. Failure to implement proper biasing risks saturation or incorrect common-mode operation.
What is the input capacitance of TL034CDR and how does it affect high-frequency stability?
The TL034CDR has an input capacitance of 4 pF per amplifier, as specified in the datasheet. This low value minimizes phase shift at the input node and supports stable operation with source impedances up to several MΩ. Combined with its 60° phase margin at unity gain, this enables robust performance in high-Z sensor interfaces without requiring external compensation.
How does TL034CDR compare to TL034AC in terms of offset voltage performance?
The TL034CDR (C-grade) has a maximum input offset voltage of 6 mV at 25°C, while the TL034AC (A-grade) improves this to 1.5 mV max at 25°C due to on-chip trimming. Both grades share identical pinout, package, and AC specifications; the A-grade is selected when sub-millivolt DC accuracy is critical, such as in precision current-sense amplifiers or calibrated sensor front-ends.
Can TL034CDR drive capacitive loads directly, and what is the recommended limit?
Yes, TL034CDR is characterized for stable operation with capacitive loads up to 100 pF, as confirmed in the operating characteristics section (SR+ and SR− test conditions). For loads exceeding 100 pF, external series resistance (typically 10–100 Ω) at the output is recommended to maintain phase margin and prevent peaking or oscillation.
TL034CDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TL034CDR FAQ
1.How can I place an order for TL034CDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TL034CDR 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 TL034CDR reliable?
The price and inventory of TL034CDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TL034CDR is usually 5 days.
3.What payment methods are accepted for TL034CDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TL034CDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TL034CDR?
TL034CDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TL034CDR 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 TL034CDR?
For technical support, including TL034CDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TL034CDR requirements.
6.How does Aetrix verify that TL034CDR is sourced from the original manufacturer or authorized distributors?
All TL034CDR 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 TL034CDR meets industry standards.
7.What is the process for return or replacement of TL034CDR?
All TL034CDR units undergo pre-shipment inspection (PSI). If there is an issue with TL034CDR, 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 TL034CDR part is unused and in its original packaging.
Return procedure for TL034CDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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