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Texas Instruments TLC2652Q-8DG4
- Part No.:
- TLC2652Q-8DG4
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2652Q-8DG4.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,497
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Product details
Overview
TLC2652Q-8DG4 from Texas Instruments is a chopper-stabilized precision operational amplifier designed for ultra-low-drift, low-noise DC signal conditioning in harsh-temperature environments. It delivers 3.5 µV max input offset voltage, 0.003 µV/°C typical offset drift, 135 dB min open-loop gain, 120 dB min CMRR, and operates across −40°C to 125°C. Its rail-to-rail common-mode input range (including negative rail) and single-supply capability make it ideal for strain gauge and thermocouple front-end amplification in industrial sensor systems.
For engineers reviewing the TLC2652Q-8DG4 datasheet, TLC2652Q-8DG4 pinout, TLC2652Q-8DG4 application, or TLC2652Q-8DG4 equivalent, key selection considerations include its guaranteed high-temperature offset stability, chopper-frequency transparency, external capacitor–based operation, and output clamp functionality for fast overload recovery in precision transducer interfaces.
Technical Context
The TLC2652Q-8DG4 employs Texas Instruments' Advanced LinCMOS™ process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage against temperature, time, supply, and common-mode variations. Its internal 450 Hz chopping frequency enables sub-microvolt DC precision without requiring user-accessible clock control in the 8-pin SOIC (D) package.
It features a dedicated CLAMP pin for external diode-based output clamping to reduce recovery time after overdrive, and its inputs/output withstand ±100 mA surge currents without latch-up. The device requires two external capacitors (CXA, CXB) for chopper stabilization but presents no user-facing clock interface in the D-package variant.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 3.5 µV max over −40°C to 125°C - ensures minimal DC error in long-term sensor measurements without recalibration. |
| Offset Drift vs Temp | 0.003 µV/°C typ - enables stable µV-level accuracy across automotive or industrial ambient swings. |
| Open-Loop Gain (AVD) | 135 dB min - supports high closed-loop gain stability for low-signal amplification (e.g., microvolt thermocouple outputs). |
| CMRR | 120 dB min - rejects common-mode noise from unshielded sensor cables in noisy factory environments. |
| Supply Voltage Range | ±1.9 V to ±8 V - allows operation from low-voltage battery-powered sensors up to robust industrial rails. |
| Input Bias Current | 500 pA max over full temp range - preserves high-impedance source integrity (e.g., piezoresistive bridges). |
| Chopping Frequency | 450 Hz - eliminates 1/f noise while maintaining usable bandwidth for static/slow-varying transducer signals. |
Pinout & Package
Package: 8-pin SOIC (D package), surface-mount, gull-wing leads. Pin 1 indicator marked; JEDEC MS-012AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | Differential input node; high-impedance CMOS input for feedback network connection. |
| 2 (IN+) | Non-Inverting Input | Differential input node; accepts low-level sensor signals with rail-to-rail common-mode range (to VDD−). |
| 3 (OUT) | Output | Class AB output stage; capable of ±50 mA short-circuit current; supports external clamp diodes via CLAMP pin. |
| 4 (VDD−) | Negative Supply Rail | Reference for all internal biasing; common-mode input range extends to this pin (no level-shifting needed). |
| 5 (CXB) | Chopper Stabilization Cap B | Connects to external capacitor (typically 0.1 µF) to stabilize chopper control loop; no user clock access. |
| 6 (CXA) | Chopper Stabilization Cap A | Second external capacitor node (typically 0.1 µF); completes on-chip auto-zero timing network. |
| 7 (CLAMP) | Output Clamp Control | Drives external diode clamp to limit output swing and accelerate recovery from saturation. |
| 8 (VDD+) | Positive Supply Rail | Primary power input; supports single-supply operation when VDD− = GND (e.g., 0 V to +5 V). |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Continuous auto-zeroing at 450 Hz eliminates 1/f noise and drift, enabling µV-level DC accuracy over temperature and time. |
| Rail-to-Rail Common-Mode Input | Input range includes VDD−, allowing direct interfacing to grounded sensors (e.g., half-bridge strain gauges) without level-shifting. |
| Output Clamp Pin | Enables external diode clamping to reduce overload recovery time below 1 µs - critical for fast step-response instrumentation. |
| MIL-STD-883C ESD Protection | Withstands 2000 V HBM - ensures reliability during board assembly and field handling in industrial settings. |
| High-Temperature Qualified | Specified from −40°C to +125°C (Q-suffix), supporting under-hood automotive, downhole, and factory-floor applications. |
Applications
| Strain Gauge Amplifier | Thermocouple Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from load cells in weigh scales or structural monitoring. IC Role / Device Role / Timing Role: Precision DC amplifier with ultra-low offset and drift to preserve bridge imbalance resolution. Use Value: Enables <10 ppm measurement accuracy over temperature without periodic zero calibration. |
Use Scenario: Cold-junction compensation and amplification of Type-K/J thermocouple outputs in furnace controllers. IC Role / Device Role / Timing Role: Low-drift, high-CMRR front-end amplifier rejecting ground-loop noise in multi-zone thermal systems. Use Value: Maintains ±0.1°C temperature accuracy over −40°C to 125°C ambient without software drift correction. |
| High-Voltage Isolated Sensor Interface | Low-Power Battery-Operated Instrumentation |
Use Scenario: Post-isolation amplification of current-sense signals in motor drives using opto- or capacitive isolators. IC Role / Device Role / Timing Role: Precision buffer accepting isolated low-level analog signals referenced to floating grounds. Use Value: Rail-to-rail input enables direct connection to isolated output without level-shifting circuitry. |
Use Scenario: Signal conditioning in portable gas analyzers or handheld multimeters powered by coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-drift amplifier minimizing self-heating error and enabling long-term zero stability. Use Value: 2.5 mA max supply current at full temperature range extends battery life while preserving µV-level accuracy. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA189IDR | Zero-drift architecture, 0.005 µV/°C drift, 5.7 MHz GBW, but only rated to 125°C (not extended temp Q-grade). | Lacks MIL-qualified temperature range and chopper-frequency transparency; better for higher-bandwidth DC-coupled apps. | Select OPA189IDR when >1 MHz bandwidth is required and extended-temp qualification is not mandatory. |
| AD8628ARZ | Chopper-stabilized, 1 µV max VIO at 25°C, but 0.03 µV/°C max drift and only rated to 105°C (not 125°C). | Higher drift limits long-term accuracy in high-temp environments; no CLAMP pin for fast recovery. | Choose AD8628ARZ for cost-sensitive lab-grade instruments where full Q-temp range is unnecessary. |
Compared with TLC2652Q-8DG4, OPA189IDR offers higher bandwidth but lacks guaranteed 125°C performance and chopper transparency, while AD8628ARZ provides lower room-temp offset but cannot maintain µV-level stability across the full −40°C to 125°C range required in automotive or industrial control.
Availability
TLC2652Q-8DG4 is available at Aetrix Electronics and suitable for industrial sensor interfaces, automotive under-hood electronics, and high-reliability test equipment requiring stable component supply across extreme temperature cycles and long service life.
Supply support for TLC2652Q-8DG4 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 high-reliability components for industrial, automotive, and aerospace markets.
The TLC2652 family was engineered specifically for ultra-stable DC amplification in transducer signal chains, targeting applications where µV-level offset and sub-10 nV/√Hz noise must be preserved across wide temperature excursions.
FAQ
What is the maximum operating temperature range for the TLC2652Q-8DG4?
The TLC2652Q-8DG4 is qualified for continuous operation from −40°C to +125°C, as defined by its Q-suffix rating per TI's SLOS019E datasheet. This extended temperature range is validated through burn-in and parametric testing across the full span, making it suitable for under-hood automotive, downhole oilfield, and industrial control applications where ambient extremes are routine.
Does the TLC2652Q-8DG4 require external clocking for chopper operation?
No, the TLC2652Q-8DG4 does not require external clocking. Its internal chopper runs at a fixed 450 Hz frequency, and the D-package (SOIC-8) version has no accessible INT/EXT or CLK pins - unlike the 14-pin or 20-pin variants. The required external capacitors (CXA and CXB) configure the stabilization loop autonomously, with no user clock interface needed.
How does the CLAMP pin on the TLC2652Q-8DG4 improve system performance?
The CLAMP pin on the TLC2652Q-8DG4 allows connection of external diodes to limit output voltage excursion during overload, reducing recovery time from saturation to under 1 µs. This is critical in closed-loop systems like precision current sources or servo amplifiers where fast return from rail-to-rail overdrive prevents control instability or measurement gaps.
Can the TLC2652Q-8DG4 operate from a single supply?
Yes, the TLC2652Q-8DG4 supports true single-supply operation. Its common-mode input voltage range extends to the negative rail (VDD−), so when VDD− = 0 V (ground), inputs can swing from 0 V upward. Combined with rail-to-rail output swing capability, this enables direct interfacing with grounded sensors and simplifies power architecture in battery- or wall-adapter–powered systems.
What are the absolute maximum supply voltages for the TLC2652Q-8DG4?
The absolute maximum supply voltage ratings for the TLC2652Q-8DG4 are VDD+ = +8 V and VDD− = −8 V, per the SLOS019E datasheet Absolute Maximum Ratings table. Exceeding these values risks permanent damage. For reliable operation, TI recommends staying within the recommended range of ±1.9 V to ±8 V, with derating applied above 25°C ambient per the Dissipation Rating Table.
TLC2652Q-8DG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- 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:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2652Q-8DG4 FAQ
1.How can I place an order for TLC2652Q-8DG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652Q-8DG4 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 TLC2652Q-8DG4 reliable?
The price and inventory of TLC2652Q-8DG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652Q-8DG4 is usually 5 days.
3.What payment methods are accepted for TLC2652Q-8DG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652Q-8DG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652Q-8DG4?
TLC2652Q-8DG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652Q-8DG4 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 TLC2652Q-8DG4?
For technical support, including TLC2652Q-8DG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652Q-8DG4 requirements.
6.How does Aetrix verify that TLC2652Q-8DG4 is sourced from the original manufacturer or authorized distributors?
All TLC2652Q-8DG4 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 TLC2652Q-8DG4 meets industry standards.
7.What is the process for return or replacement of TLC2652Q-8DG4?
All TLC2652Q-8DG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652Q-8DG4, 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 TLC2652Q-8DG4 part is unused and in its original packaging.
Return procedure for TLC2652Q-8DG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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