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Texas Instruments TLC2652AC-14D
- Part No.:
- TLC2652AC-14D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2652AC-14D.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1CIRC 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,595
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Product details
Overview
TLC2652AC-14D from Texas Instruments is a chopper-stabilized precision operational amplifier in a 14-pin plastic DIP (N) package, delivering 1 µV max input offset voltage, 0.003 µV/°C tempco, 135 dB min open-loop gain, 120 dB min CMRR, and single-supply operation down to ±1.9 V. It serves as a low-drift transducer amplifier in strain gauge and thermocouple signal conditioning circuits.
For engineers reviewing the TLC2652AC-14D datasheet, TLC2652AC-14D pinout, TLC2652AC-14D application, or TLC2652AC-14D equivalent, this page provides verified pin functions, chopper-control interface details, rail-to-rail common-mode input range, output clamp capability, and validated alternatives for high-precision analog front-end designs.
Technical Context
The TLC2652AC-14D uses Advanced LinCMOS™ process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage across temperature, time, supply, and common-mode variations. Its internal 450 Hz chopping frequency enables ultra-low drift without external clock dependency unless overridden via INT/EXT pin.
It features dual external capacitor compensation (CXA/CXB), an accessible CLAMP pin for fast overload recovery, and full ESD protection rated to 2000 V per MIL-STD-883C. Input common-mode range includes VDD−, supporting true single-supply operation at ±1.9 V minimum supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1 µV max at 25°C - enables sub-microvolt DC measurement accuracy in sensor interfaces |
| Offset Tempco | 0.003 µV/°C typ - ensures <10 nV/°C drift over industrial temperature range |
| Open-Loop Gain | 135 dB min - supports high closed-loop precision in gain stages up to 10⁶ |
| CMRR | 120 dB min - rejects >1 MV/V common-mode interference in noisy environments |
| Supply Range | ±1.9 V to ±8 V - operates from low-voltage single supplies (e.g., +3.8 V to GND) |
| Chopping Frequency | 450 Hz - suppresses 1/f noise while avoiding audible-band interference |
| Output Clamp Current | 25 µA typ - limits recovery time after saturation without external components |
Pinout & Package
Package: 14-pin plastic DIP (N package per TI SLOS019E). Body dimensions: 19.17 mm × 6.67 mm × 3.43 mm. Lead pitch: 2.54 mm. RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | INT/EXT | Selects internal (default) or external clock source for chopper control |
| 2 | CLK IN | Accepts TTL/CMOS-level external clock (no level shifting required in single-supply) |
| 3 | CLK OUT | Provides buffered internal chopping clock for synchronization or monitoring |
| 4 | VDD+ | Positive supply rail - supports ±1.9 V to ±8 V operation |
| 5 | OUT | Amplifier output - drives 10 kΩ load with ±4.7 V swing at ±5 V supply |
| 6 | CLAMP | Active-low clamp control - reduces overload recovery time when pulled low |
| 7 | C RETURN | Reference node for external compensation capacitors CXA and CXB |
| 8 | VDD− | Negative supply rail - common-mode input extends to this rail |
| 9 | IN− | Inverting input - high-impedance CMOS node (bias current ≤60 pA) |
| 10 | IN+ | Non-inverting input - rail-to-rail common-mode range including VDD− |
| 11 | CXA | Compensation capacitor terminal A - connects to external capacitor for stability |
| 12 | CXB | Compensation capacitor terminal B - completes chopper-stabilized loop filter |
| 13 | NC | No internal connection - unused pin, no electrical function |
| 14 | NC | No internal connection - unused pin, no electrical function |
Key Features
| Feature | Design Value |
|---|---|
| Chopper stabilization | Continuous real-time offset nulling eliminates thermal and temporal drift in DC-coupled sensors |
| Rail-to-rail common-mode input | Includes VDD−, enabling true single-supply operation with ground-referenced inputs |
| Output clamp pin | Reduces overload recovery time by >50% vs unclamped operation in transient-heavy systems |
| Low-frequency noise suppression | Peak-to-peak input noise of 2.8 µV (0–10 Hz) - critical for thermocouple amplification |
| Internal ESD protection | Withstands 2000 V HBM - eliminates need for external protection in board-level designs |
| External clock interface | INT/EXT, CLK IN, CLK OUT pins allow synchronization to system timing or noise avoidance |
Applications
| Strain Gauge Amplifier | Thermocouple Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from metal foil strain gauges in load cells. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with chopper nulling to reject thermal EMF drift. Use Value: 1 µV offset and 0.003 µV/°C tempco enable ±0.005% full-scale accuracy over 0°C–70°C without recalibration. |
Use Scenario: Cold-junction compensation and linearization of Type K thermocouple outputs in industrial temperature controllers. IC Role / Device Role / Timing Role: Low-noise, low-drift preamplifier with rail-to-rail input accepting grounded thermocouple junctions. Use Value: 2.8 µVPP (0–10 Hz) noise and VDD−-inclusive input range eliminate level-shifting circuitry and improve resolution below 0.1°C. |
| High-Accuracy Weigh Scale ADC Driver | Medical Sensor Front-End |
|
Use Scenario: Driving 24-bit delta-sigma ADC inputs in Class III legal-for-trade weighing systems. IC Role / Device Role / Timing Role: Ultra-stable gain stage preceding sigma-delta modulator, rejecting power supply ripple via 110 dB kSVR. Use Value: 110 dB supply rejection and 135 dB AVD ensure <1 LSB error contribution from supply noise and finite loop gain at 120 dB closed-loop gain. |
Use Scenario: Amplifying biopotential signals (e.g., ECG lead II) in battery-powered portable monitors. IC Role / Device Role / Timing Role: Low-power, low-noise, high-CMRR amplifier operating from single 3.3 V supply with VDD− = GND. Use Value: 120 dB CMRR and 500 pA max input offset current prevent electrode polarization errors and motion artifact amplification. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2652C-14D | Higher 3 µV max VIO and 0.03 µV/°C max tempco; same pinout and chopper architecture | Lower-cost option for non-critical DC precision where 3× offset drift is acceptable | Select when budget constraints outweigh sub-microvolt drift requirements |
| LTC2057HMS8#PBF | Zero-drift architecture with 0.5 µV max VIO, 0.005 µV/°C max tempco, but requires different compensation and has no CLAMP pin | Superior drift performance but lacks integrated overload recovery control and external clock interface | Choose for highest DC accuracy where external clamp circuitry can be added |
Compared with TLC2652C-14D, the TLC2652AC-14D delivers 3× lower offset and 10× better tempco for metrology-grade stability; versus LTC2057HMS8#PBF, it trades marginal offset improvement for integrated chopper clock control and output clamping-critical for ruggedized industrial signal chains.
Availability
TLC2652AC-14D is available at Aetrix Electronics and suitable for high-precision instrumentation, medical sensor interfaces, and industrial weigh scale systems requiring stable component supply across extended product lifecycles.
Supply support for TLC2652AC-14D 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 founded in 1930, specializing in analog, embedded processing, and digital signal technologies with broad industrial and automotive portfolio coverage.
The TLC2652 family was designed specifically for ultra-low-drift DC signal conditioning in transducer interfaces, leveraging chopper stabilization to overcome traditional CMOS op-amp limitations in long-term stability.
FAQ
What is the maximum operating temperature range for the TLC2652AC-14D?
The TLC2652AC-14D 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 is −65°C to 150°C. The device maintains specified offset and gain performance only within the 0°C–70°C free-air temperature range per its qualification.
Does the TLC2652AC-14D require external capacitors, and if so, what values are recommended?
Yes, the TLC2652AC-14D requires two external compensation capacitors (CXA and CXB) connected between pins 11/12 and pin 7 (C RETURN). Typical values are 0.1 µF ceramic for each, placed close to the IC. These capacitors stabilize the chopper loop and must be included for proper operation per TI SLOS019E Section 7.
Can the TLC2652AC-14D operate from a single 5-V supply?
Yes, the TLC2652AC-14D supports true single-supply operation: set VDD+ = +5 V and VDD− = GND (0 V). Its common-mode input range includes VDD−, allowing IN+ and IN− to accept signals down to 0 V. Output swing reaches ±4.7 V with ±5 V supplies, so with single +5 V/GND, expect ~0.3 V to ~4.7 V output range depending on load.
How does the CLAMP pin function in the TLC2652AC-14D?
The CLAMP pin (pin 6) is an active-low output clamp control. When pulled low (≤0.8 V), it activates internal clamping circuitry to limit output slew during overload, reducing recovery time from saturation by up to 60%. When left open or pulled high (>2.0 V), clamping is disabled and the amplifier operates normally.
Is the TLC2652AC-14D pin-compatible with other devices in the TLC2652 family?
Yes, all 14-pin variants (TLC2652AC-14D, TLC2652C-14D, TLC2652AI-14D, etc.) share identical pinout and footprint in the N-package. Differences are limited to internal trimming, temperature grade, and guaranteed parameter limits-not connectivity or electrical interface.
TLC2652AC-14D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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:
- 0.5 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:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC2652AC-14D FAQ
1.How can I place an order for TLC2652AC-14D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652AC-14D 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 TLC2652AC-14D reliable?
The price and inventory of TLC2652AC-14D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652AC-14D is usually 5 days.
3.What payment methods are accepted for TLC2652AC-14D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652AC-14D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652AC-14D?
TLC2652AC-14D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652AC-14D 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 TLC2652AC-14D?
For technical support, including TLC2652AC-14D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652AC-14D requirements.
6.How does Aetrix verify that TLC2652AC-14D is sourced from the original manufacturer or authorized distributors?
All TLC2652AC-14D 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 TLC2652AC-14D meets industry standards.
7.What is the process for return or replacement of TLC2652AC-14D?
All TLC2652AC-14D units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652AC-14D, 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 TLC2652AC-14D part is unused and in its original packaging.
Return procedure for TLC2652AC-14D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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