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Texas Instruments TLC2652AMFKB
- Part No.:
- TLC2652AMFKB
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 20-CLCC
- Datasheet:
-
TLC2652AMFKB.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 20LCCC
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
TLC2652AMFKB from Texas Instruments is a military-grade chopper-stabilized operational amplifier optimized for ultra-low-drift precision signal conditioning in harsh environments. It delivers 3 µV max input offset voltage, 0.003 µV/°C temperature coefficient, 135 dB min open-loop gain, 120 dB min CMRR, and operates across −55°C to +125°C. It is used in strain gauge amplifiers, thermocouple interfaces, and high-reliability transducer front-ends where long-term dc stability is critical.
For engineers reviewing the TLC2652AMFKB datasheet, TLC2652AMFKB pinout, TLC2652AMFKB application, or TLC2652AMFKB equivalent, this page provides verified package mapping (FK ceramic chip carrier), confirmed chopper-stabilization architecture, validated military temperature range performance, and real-world design implications of its rail-to-rail common-mode input and clamp-enabled overload recovery.
Technical Context
The TLC2652AMFKB employs Texas Instruments' Advanced LinCMOS™ process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage against drift induced by temperature, time, supply variation, and common-mode voltage shifts. Its internal 450 Hz chopping frequency enables sub-microvolt dc precision without external clock control.
It features a dedicated CLAMP terminal for fast output recovery during overdrive, rail-inclusive common-mode input range (VDD− to VDD+ − 1.9 V), and robust ±100 mA surge immunity on inputs/outputs. The device requires two external capacitors (CXA, CXB) for stabilization but hides chopper-control complexity from the user.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 3 µV max over −55°C to +125°C - ensures <1 µV error contribution in 1 mV full-scale sensor outputs after calibration. |
| Offset Drift vs Temp | 0.003 µV/°C typ - contributes only 0.3 µV drift across 100°C ambient swing, enabling decade-level calibration stability. |
| Open-Loop Gain (AVD) | 135 dB min - supports >3 million closed-loop gain accuracy with <0.001% linearity error at unity gain. |
| CMRR | 120 dB min - rejects 1 V common-mode interference to <1 µV residual at output, critical for bridge sensor rejection. |
| Supply Range | ±1.9 V to ±8 V - enables operation from low-voltage battery rails (±2 V) up to industrial ±5 V or ±7.5 V supplies. |
| Chopping Frequency | 450 Hz - places switching artifacts far below audio band, avoiding aliasing in DC-coupled measurement systems. |
| Clamp On-State Current | 25 µA - allows external clamping network to reduce recovery time from saturation to <10 µs in overload scenarios. |
Pinout & Package
Package: FK ceramic chip carrier (20-pin, unsealed, gold-plated bonding pads). Designed for hermetic assembly using thermal compression or ultrasonic bonding; compatible with conductive epoxy or Au–Si preform mounting.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 2, 4, 5, 6, 7, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20 | NC (No Internal Connection) | Unused bonding pads - must be left floating or grounded per layout best practices; no electrical function. |
| 3 | IN− | Inverting input - high-impedance CMOS node; requires guarded trace routing to preserve 500 pA max input offset current. |
| 8 | IN+ | Non-inverting input - rail-to-rail common-mode range includes VDD−; enables single-supply transducer biasing. |
| 9 | VDD− | Negative supply rail - referenced to system ground in single-supply configs; supports −8 V absolute max rating. |
| 10 | VDD+ | Positive supply rail - accepts up to +8 V; internal biasing stable down to ±1.9 V total supply span. |
| 11 | OUT | Amplified output - capable of ±50 mA short-circuit current; includes internal ESD protection to 2000 V HBM. |
| 12 | CLAMP | Output clamp control - sinking 25 µA activates external clamp diode network to accelerate recovery from saturation. |
| CXA, CXB | Chopper Stabilization Caps | External capacitor terminals - require low-leakage ceramic caps (e.g., C0G/NP0) for stable nulling loop operation. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Continuous real-time offset nulling eliminates aging and thermal drift - enables 0.003 µV/°C performance without manual recalibration. |
| Rail-Inclusive Common-Mode Input | Input range extends to VDD− - permits direct connection of grounded-sensor bridges and thermocouples without level-shifting circuitry. |
| Output Clamp Terminal | Dedicated CLAMP pin drives external diodes to limit slew-induced overshoot - reduces overload recovery time by >50% vs unclamped operation. |
| MIL-STD-883C ESD Protection | 2000 V HBM rating - withstands handling in non-ESD-controlled environments without parametric degradation. |
| High Surge Immunity | ±100 mA input/output surge tolerance - survives transient coupling from relay coils, solenoids, or motor commutation noise. |
Applications
| Strain Gauge Amplifier | Thermocouple Interface |
|---|---|
|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from load cells in aerospace structural monitoring. IC Role / Device Role / Timing Role: Precision instrumentation amplifier front-end with chopper nulling to suppress thermal EMF drift in aluminum airframes. Use Value: 3 µV max VIO and 0.003 µV/°C drift ensure <0.01% FS error over −55°C to +125°C flight envelope without recalibration. |
Use Scenario: Cold-junction compensation and linearization of Type K thermocouples in turbine exhaust gas temperature sensing. IC Role / Device Role / Timing Role: Low-drift differential amplifier with rail-to-rail input accepting grounded thermocouple junctions and reference IC outputs. Use Value: 120 dB CMRR rejects common-mode noise from high-current turbine actuators; 135 dB AVD enables 1000× gain with <0.001% gain error. |
| Medical Patient Monitor Front-End | Downhole Oilfield Sensor Signal Chain |
|
Use Scenario: Biopotential acquisition (ECG/EEG) in portable diagnostic devices requiring FDA-grade long-term stability. IC Role / Device Role / Timing Role: First-stage dc-coupled amplifier with chopper stabilization to eliminate 1/f noise and maintain baseline integrity over hours. Use Value: 2.8 µV peak-to-peak 0.1–10 Hz noise enables detection of <10 µV cardiac signals; 500 pA max IIO prevents electrode polarization errors. |
Use Scenario: Signal conditioning for piezoresistive pressure sensors in deep-well drilling tools exposed to 150°C ambient and vibration. IC Role / Device Role / Timing Role: High-reliability transducer amplifier qualified to −55°C to +125°C with internal ESD and surge hardening. Use Value: MIL-PRF-38535 M-suffix qualification ensures lifecycle continuity; 260°C reflow compatibility supports ruggedized PCB assembly. |
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 |
|---|---|---|---|
| OPA189IDR | Zero-drift auto-zero architecture (not chopper); 0.005 µV/°C drift; 5.7 MHz GBW; SOIC-8 package. | Higher bandwidth suitable for dynamic sensor signals; lacks dedicated CLAMP pin and military temp range. | Select OPA189IDR when bandwidth >1 MHz is required and environmental grade is commercial/industrial only. |
| LTC2057HMS8#PBF | Chopper-stabilized; 0.5 µV max VIO; −40°C to +125°C; MSOP-8; no CLAMP pin; 2 MHz GBW. | Lower offset but narrower temp range and no overload recovery assist; smaller footprint. | Select LTC2057HMS8#PBF for space-constrained designs needing <0.5 µV offset, where CLAMP functionality is not required. |
Compared with OPA189IDR and LTC2057HMS8#PBF, the TLC2652AMFKB uniquely combines military-grade temperature range (−55°C to +125°C), dedicated CLAMP terminal for fast saturation recovery, and proven chopper architecture with 0.003 µV/°C drift - making it irreplaceable in high-reliability, low-bandwidth, ultra-stable measurement systems.
Availability
TLC2652AMFKB is available at Aetrix Electronics and suitable for aerospace structural health monitoring, downhole oilfield instrumentation, and medical diagnostic equipment requiring stable component supply across extended temperature extremes and long product lifecycles.
Supply support for TLC2652AMFKB 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 heritage in precision analog design and military-grade component qualification.
The TLC2652AMFKB belongs to TI's Advanced LinCMOS™ chopper-stabilized op-amp family, engineered specifically for ultra-low-drift, high-reliability signal conditioning in defense, aerospace, and industrial measurement systems operating across extreme temperatures.
FAQ
What is the maximum input offset voltage specification for the TLC2652AMFKB over its full operating temperature range?
The TLC2652AMFKB has a maximum input offset voltage of 3 µV across its full military temperature range of −55°C to +125°C. This value is specified in the "Electrical Characteristics" table for the M-suffix devices under "Full range" conditions and reflects production-tested limits for the FK package variant. The TLC2652AMFKB achieves this via continuous chopper-stabilization, ensuring dc precision remains stable without recalibration.
Does the TLC2652AMFKB require external clocking for chopper operation, or is the chopping frequency internally generated?
The TLC2652AMFKB uses an internally generated chopping frequency of 450 Hz and does not require external clocking. Its chopper-control circuitry is fully self-contained and transparent to the user. Unlike 14-pin or 20-pin DIP/SOIC variants, the FK chip carrier package does not expose INT/EXT or CLK pins - all timing is fixed and factory-trimmed, simplifying layout and eliminating clock routing concerns for the TLC2652AMFKB.
Can the TLC2652AMFKB operate from a single supply, and what is its common-mode input voltage range in that configuration?
Yes, the TLC2652AMFKB supports true single-supply operation. Its common-mode input voltage range extends to the negative rail (VDD−), meaning it can accept input signals down to ground when VDD− = 0 V. With VDD+ = +5 V and VDD− = 0 V, the usable common-mode range is 0 V to +3.1 V - enabling direct interfacing with grounded sensors like thermocouples or bridge circuits without level-shifting components.
What is the purpose of the CLAMP pin on the TLC2652AMFKB, and how is it used in practice?
The CLAMP pin on the TLC2652AMFKB sinks 25 µA when the output saturates, enabling connection to an external clamp diode network (e.g., Schottky diodes to rails) that bypasses the internal compensation and accelerates recovery from overload. In practice, this reduces recovery time from saturation by >50%, which is critical in fast-settling data acquisition systems or servo loops where output phase delay must be minimized after transient overloads.
Is the TLC2652AMFKB qualified to any military or aerospace standards, and what packaging construction supports that qualification?
Yes, the TLC2652AMFKB is qualified per MIL-PRF-38535 for the M-suffix (−55°C to +125°C) temperature grade and features FK ceramic chip carrier packaging. This unsealed ceramic substrate with gold-plated bonding pads is designed for hermetic assembly using thermal compression or ultrasonic bonding - meeting mechanical and thermal reliability requirements for aerospace and defense applications where long-term parametric stability and survivability under shock/vibe are mandatory.
TLC2652AMFKB Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 20-CLCC
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- Chopper (Zero-Drift)
- Number of Circuits:
- 1
- Output Type:
- Single-Ended
- Slew Rate:
- 2.8V/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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 20-LCCC (8.89x8.89)
TLC2652AMFKB FAQ
1.How can I place an order for TLC2652AMFKB through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652AMFKB 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 TLC2652AMFKB reliable?
The price and inventory of TLC2652AMFKB are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652AMFKB is usually 5 days.
3.What payment methods are accepted for TLC2652AMFKB?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652AMFKB transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652AMFKB?
TLC2652AMFKB orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652AMFKB 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 TLC2652AMFKB?
For technical support, including TLC2652AMFKB datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652AMFKB requirements.
6.How does Aetrix verify that TLC2652AMFKB is sourced from the original manufacturer or authorized distributors?
All TLC2652AMFKB 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 TLC2652AMFKB meets industry standards.
7.What is the process for return or replacement of TLC2652AMFKB?
All TLC2652AMFKB units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652AMFKB, 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 TLC2652AMFKB part is unused and in its original packaging.
Return procedure for TLC2652AMFKB:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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