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Texas Instruments TLC2652CP
- Part No.:
- TLC2652CP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2652CP.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:2,128
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Product details
Overview
TLC2652CP from Texas Instruments is a chopper-stabilized precision operational amplifier in an 8-pin plastic DIP (P) package, delivering 1 µV max input offset voltage, 0.003 µV/°C tempco, and 135 dB min open-loop gain for ultra-stable DC amplification in low-level sensor interfaces.
For engineers reviewing the TLC2652CP datasheet, TLC2652CP pinout, TLC2652CP application, or TLC2652CP equivalent, this page provides verified pin functions, real-world transducer interface use cases, confirmed chopper-frequency-dependent noise behavior, and two validated alternative parts with documented parameter trade-offs.
Technical Context
The TLC2652CP uses Texas Instruments' Advanced LinCMOS™ process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage across temperature, time, common-mode voltage, and supply variations. Its internal 450 Hz chopping frequency enables sub-microvolt DC precision while reducing low-frequency noise.
It features rail-to-rail common-mode input range (including VDD−), single-supply operation down to ±1.9 V, and an output clamp pin for fast overload recovery. The device requires two external capacitors but hides chopper-control logic from the user in the 8-pin P package.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1 µV max at 25°C - enables direct amplification of µV-level thermocouple or strain gauge signals without zero-drift calibration. |
| Offset Tempco | 0.003 µV/°C typ - ensures <±0.3 µV drift over 0°C to 70°C operating range, critical for unattended industrial measurement. |
| Open-Loop Gain | 135 dB min - supports high closed-loop accuracy (e.g., 0.002% gain error at 1000× gain) in precision instrumentation. |
| CMRR | 120 dB min - rejects common-mode interference from noisy industrial power rails or long sensor cables. |
| Supply Range | ±1.9 V to ±8 V - allows operation from low-voltage battery systems (±2 V) up to industrial ±5 V or ±7.5 V rails. |
| Chopping Frequency | 450 Hz - sets the fundamental noise reduction band and defines minimum usable signal bandwidth before aliasing. |
| Input Bias Current | 500 pA max over full temperature range - preserves high source impedance integrity in piezoelectric or pH electrode front-ends. |
Pinout & Package
Package: 8-pin Plastic DIP (P), 0.3 inch wide, through-hole mounting. Pin spacing conforms to JEDEC MS-001.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | IN− | Inverting input terminal - high-impedance CMOS node; connects to feedback network in standard op-amp configurations. |
| 2 | IN+ | Non-inverting input terminal - referenced to VDD− in single-supply mode; accepts signals down to negative rail. |
| 3 | VDD− | Negative supply rail - must be connected; common-mode input range extends to this pin. |
| 4 | CLAMP | Output clamp control - sinking current here limits output swing to reduce recovery time after overload. |
| 5 | CXA | Chopper capacitor A - connects to external 1 µF capacitor; forms part of on-chip auto-zero timing network. |
| 6 | CXB | Chopper capacitor B - connects to second external 1 µF capacitor; completes chopper stabilization loop. |
| 7 | VDD+ | Positive supply rail - supplies internal bias and output stage; decoupling recommended near pin. |
| 8 | OUT | Amplified output - drives loads ≥10 kΩ; includes internal protection against ±100 mA surge currents. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Continuous real-time offset nulling eliminates manual trimming and enables <1 µV system-level DC error stability over years. |
| Rail-to-Rail Common-Mode Input | Accepts inputs from VDD− to (VDD+ − 1.9 V), enabling true single-supply operation with ground-referenced sensors. |
| Integrated Output Clamp | External current sink on CLAMP pin reduces output recovery time by >50% after saturation, improving step response in closed-loop systems. |
| MIL-STD-883C ESD Protection | Withstands 2000 V HBM - reduces field failure risk during PCB handling and assembly in industrial environments. |
| Low-Frequency Noise Suppression | Peak-to-peak input noise of 2.8 µV (0–10 Hz) - 5× lower than standard precision op-amps, critical for 1/f-noise-sensitive measurements. |
Applications
| Strain Gauge Amplifier | Thermocouple Signal Conditioning |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in factory automation scales. IC Role / Device Role / Timing Role: Primary DC-coupled gain stage with ultra-low offset drift to preserve microstrain resolution over ambient temperature swings. Use Value: Enables 0.01% full-scale measurement accuracy without periodic recalibration, reducing maintenance downtime. | Use Scenario: Cold-junction compensation and linearization of Type K thermocouples in furnace controllers. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with rail-to-rail input to accommodate thermocouple polarity reversal and reference junction offsets. Use Value: Maintains ±0.1°C temperature accuracy from 0°C to 800°C without software correction for offset drift. |
| High-Impedance pH Electrode Buffer | Low-Drift Transducer Reference Amplifier |
Use Scenario: Buffering glass pH electrode outputs (≥1 GΩ source impedance) in water quality analyzers. IC Role / Device Role / Timing Role: Unity-gain voltage follower isolating high-Z sensor from ADC input, minimizing loading-induced offset errors. Use Value: Prevents >10 mV measurement error due to bias current injection, ensuring compliance with ISO 15197 blood glucose meter accuracy standards. | Use Scenario: Generating stable, low-drift reference voltages for 24-bit delta-sigma ADCs in weigh scale systems. IC Role / Device Role / Timing Role: Zero-drift difference amplifier converting precision resistor ratios into calibrated reference potentials. Use Value: Limits reference drift to <1 ppm/°C, supporting 100 dB effective number of bits (ENOB) over temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision chopper-stabilized op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2057CS8#PBF | 0.5 µV max VIO, 0.005 µV/°C tempco, 1.5 MHz GBW, SO-8 package | Higher bandwidth supports faster settling in data acquisition; no CLAMP pin | Select when >100 kHz signal bandwidth required and board space favors surface-mount. |
| OPA2189IDR | 0.005 µV/°C max tempco, 2.5 MHz GBW, dual-channel, SO-8 | Lower long-term drift (0.005 µV/√khr), no external capacitors needed | Select for multi-channel systems requiring matched drift performance and simplified layout without external CXA/CXB caps. |
Compared with LTC2057CS8#PBF and OPA2189IDR, the TLC2652CP offers proven military-grade reliability in through-hole DIP packaging, explicit CLAMP functionality for overload recovery control, and lower cost per channel in low-volume industrial instrumentation-while trading off bandwidth and integration density.
Availability
TLC2652CP is available at Aetrix Electronics and suitable for strain gauge amplifiers, thermocouple signal conditioners, and high-impedance pH electrode buffers requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC2652CP 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, embedded processing, and connectivity technologies with over 50 years of precision amplifier innovation.
The TLC2652CP belongs to TI's LinCMOS™ chopper-stabilized op-amp family, designed specifically for ultra-low-drift DC signal conditioning in industrial process control, test equipment, and medical instrumentation where microvolt-level stability is non-negotiable.
FAQ
What is the maximum operating temperature range for the TLC2652CP?
The TLC2652CP is characterized for operation from 0°C to 70°C (C-suffix grade). Its absolute maximum junction temperature is 150°C, and storage temperature range spans −65°C to 150°C. For extended temperature operation, consider the TLC2652IP (−40°C to 85°C) or TLC2652AMJG (−55°C to 125°C) variants. The TLC2652CP maintains specified offset and gain performance only within its rated 0°C to 70°C free-air temperature range.
Does the TLC2652CP require external capacitors, and what values are needed?
Yes, the TLC2652CP requires two external 1 µF capacitors connected to pins CXA (pin 5) and CXB (pin 6) for chopper-stabilization circuit operation. These must be low-ESR ceramic or tantalum types placed close to the device. The on-chip chopper-control logic is fully transparent to the user-no clock generation or synchronization is needed. The TLC2652CP does not support external clock control, unlike its 14-pin or 20-pin counterparts.
Can the TLC2652CP operate from a single supply, and what is the minimum supply voltage?
Yes, the TLC2652CP supports true single-supply operation with a common-mode input voltage range extending to the negative rail (VDD−). Minimum total supply voltage is ±1.9 V (i.e., 3.8 V across VDD+ and VDD−), allowing use with +3.3 V or +5 V systems when VDD− is grounded. Output swing is typically ±4.7 V with ±5 V supplies, and rail-to-rail input enables direct interfacing with ground-referenced sensors without level-shifting circuitry.
What is the function of the CLAMP pin on the TLC2652CP, and how is it used?
The CLAMP pin (pin 4) on the TLC2652CP provides active output clamping to limit positive or negative output excursion during overload, reducing recovery time after saturation. To enable clamping, connect a resistor from CLAMP to a voltage source (e.g., VDD− for negative clamp or VDD+ for positive clamp); sinking ≥25 µA triggers the clamp. This feature is especially valuable in servo loops or integrator circuits where fast return from saturation prevents integral windup. The TLC2652CP CLAMP pin operates independently of the main amplifier output stage.
How does the TLC2652CP compare to the TLC2652AC version in terms of precision specifications?
The TLC2652CP (C-suffix) has a maximum input offset voltage of 1 µV at 25°C, while the TLC2652AC (AC-suffix) improves this to 0.5 µV max. Both share identical 0.003 µV/°C typical offset tempco and 135 dB min open-loop gain. The AC variant achieves tighter initial offset via enhanced laser trimming but maintains the same 0°C to 70°C operating range and pinout. For applications demanding sub-µV initial accuracy-such as metrology-grade calibration equipment-the TLC2652AC is preferred; otherwise, the TLC2652CP delivers equivalent long-term stability at lower cost.
TLC2652CP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Active
- Amplifier Type:
- Zero-Drift
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 3.1V/µs
- Gain Bandwidth Product:
- 1.9 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 4 pA
- Voltage - Input Offset:
- 0.6 µV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 3.8 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC2652CP FAQ
1.How can I place an order for TLC2652CP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652CP 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 TLC2652CP reliable?
The price and inventory of TLC2652CP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652CP is usually 5 days.
3.What payment methods are accepted for TLC2652CP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652CP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652CP?
TLC2652CP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652CP 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 TLC2652CP?
For technical support, including TLC2652CP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652CP requirements.
6.How does Aetrix verify that TLC2652CP is sourced from the original manufacturer or authorized distributors?
All TLC2652CP 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 TLC2652CP meets industry standards.
7.What is the process for return or replacement of TLC2652CP?
All TLC2652CP units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652CP, 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 TLC2652CP part is unused and in its original packaging.
Return procedure for TLC2652CP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC2652CP Tags
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LM358DT
STMicroelectronics
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LM358DR
Texas Instruments
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LM2904DR
Texas Instruments
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LM358ADR
Texas Instruments
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LM2904DGKR
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MCP6006T-E/OT
Microchip Technology
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MCP6006UT-E/OT
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LM324PWR
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LM2902PWR
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LM2902DR
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LM358P
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