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Texas Instruments TLC2652Q-8D
- Part No.:
- TLC2652Q-8D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2652Q-8D.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,191
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Product details
Overview
TLC2652Q-8D from Texas Instruments is a chopper-stabilized precision operational amplifier in an 8-pin SOIC (D008) package, delivering 1 µV max input offset voltage at 25°C and 3.5 µV max over −40°C to 125°C, 0.003 µV/°C typical offset drift, 135 dB min open-loop gain, and 120 dB min CMRR - engineered for strain gauge and thermocouple signal conditioning in automotive engine control units.
For engineers reviewing the TLC2652Q-8D datasheet, TLC2652Q-8D pinout, TLC2652Q-8D application, or TLC2652Q-8D equivalent, this page provides verified pin functions, temperature-rated performance boundaries, chopper-control interface details, and validated alternatives for high-reliability analog front-end designs operating up to 125°C.
Technical Context
The TLC2652Q-8D implements continuous auto-zeroing via internal 450 Hz chopper modulation, nulling input offset voltage in real time across temperature, time, and supply variations. Its Advanced LinCMOS™ input stage enables rail-to-rail common-mode input range (including VDD−), supporting single-supply operation down to ±1.9 V.
Two external capacitors (CXA, CXB) are mandatory for chopper stabilization; the CLAMP pin allows external output clamping to accelerate overload recovery. The device integrates ESD protection rated to 2000 V (MIL-STD-883C, Method 3015.2) and withstands ±100 mA surge currents without latch-up.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 3.5 µV max over −40°C to 125°C - ensures sub-microvolt DC accuracy in high-temp sensor interfaces without calibration. |
| Offset Drift | 0.003 µV/°C typ - maintains stable baseline in wide-temperature industrial monitoring systems. |
| Open-Loop Gain | 135 dB min - supports high-precision closed-loop gain stability for 24-bit ADC driver stages. |
| CMRR | 120 dB min - rejects common-mode noise in bridge-based transducer circuits with >1 MΩ source impedance. |
| Supply Range | ±1.9 V to ±8 V - enables low-voltage battery-powered instrumentation and high-headroom industrial supplies. |
| Chopping Frequency | 450 Hz - suppresses 1/f noise below 10 Hz while avoiding audible interference in audio-adjacent systems. |
| Input Bias Current | 500 pA max over full temp range - preserves signal integrity with high-impedance pH or piezoelectric sensors. |
Pinout & Package
Package: 8-pin SOIC (D008), 3.9 mm × 4.9 mm body, 1.27 mm pitch, JEDEC MS-012AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | High-impedance CMOS node; accepts signals down to VDD−; requires matched trace routing for optimal CMRR. |
| 2 (IN+) | Non-Inverting Input | High-impedance CMOS node; common-mode range includes VDD−; critical for thermocouple cold-junction compensation. |
| 3 (VDD−) | Negative Supply Rail | Reference for all internal biasing; must be decoupled with ≥0.1 µF ceramic capacitor near pin. |
| 4 (CXA) | Chopper Stabilization Cap A | Connects to external capacitor (typically 0.1 µF); forms part of on-chip auto-zero timing network. |
| 5 (CXB) | Chopper Stabilization Cap B | Second stabilization capacitor node; paired with CXA to set chopping frequency and nulling cycle. |
| 6 (OUT) | Amplifier Output | Capable of ±50 mA short-circuit current; drives 10 kΩ loads with 4.7 V swing at ±5 V supply. |
| 7 (CLAMP) | Output Clamp Control | Sinks 25 µA when active; reduces overload recovery time by limiting output excursion during saturation. |
| 8 (VDD+) | Positive Supply Rail | Power input for internal circuitry; requires local 0.1 µF ceramic decoupling to minimize chopper noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail common-mode input range | Includes VDD−, enabling true single-supply operation with ground-referenced sensors like RTDs and thermistors. |
| Chopper-stabilized architecture | Eliminates 1/f noise and drift; achieves 0.8 µV peak-to-peak input noise (0–1 Hz) for ultra-low-frequency measurements. |
| Integrated output clamp | Reduces overload recovery time by >50% vs unclamped operation - critical for fast-settling data acquisition systems. |
| Military-grade temperature rating | Qualified from −40°C to +125°C (Q-suffix), meeting AEC-Q100 stress test requirements for under-hood automotive use. |
| ESD-hardened design | 2000 V HBM protection per MIL-STD-883C; survives handling without external protection diodes in production environments. |
Applications
| Strain Gauge Amplification | Thermocouple Signal Conditioning |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in industrial weighing systems operating at ambient temperatures up to 85°C. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with sub-µV offset stability over thermal cycling. Use Value: Enables 1:100,000 dynamic range without software offset correction, reducing calibration labor in field-deployed equipment. |
Use Scenario: Cold-junction compensation and linearization of Type-K thermocouples in automotive exhaust gas temperature (EGT) sensors. IC Role / Device Role / Timing Role: High-input-impedance, low-drift buffer amplifying thermocouple voltage referenced to local sensor junction. Use Value: Maintains ±0.5°C measurement accuracy over −40°C to 125°C ambient, meeting OEM powertrain thermal management specs. |
| High-Voltage Battery Monitoring | Precision Reference Buffer |
Use Scenario: Isolated voltage sensing of 400 V EV battery packs using resistive divider networks with high common-mode rejection. IC Role / Device Role / Timing Role: Differential input stage rejecting common-mode transients while preserving microvolt-level divider ratio fidelity. Use Value: Achieves <10 ppm gain error drift over temperature, ensuring SOC estimation accuracy within ±1% over vehicle lifetime. |
Use Scenario: Buffering ultra-stable voltage references (e.g., LTZ1000) in metrology-grade digital multimeters and calibration standards. IC Role / Device Role / Timing Role: Zero-drift follower isolating reference output from load-induced errors and PCB leakage paths. Use Value: Prevents reference degradation from board contamination or humidity, sustaining <0.1 ppm/h long-term stability in lab instruments. |
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 with 0.005 µV/°C max drift; 5.7 MHz GBW; no external caps required. | Better bandwidth and lower noise for AC-coupled sensor interfaces; lacks CLAMP pin for fast recovery. | Select OPA189IDR when higher speed (>100 kHz) and simplified layout (no CXA/CXB) outweigh need for overload recovery control. |
| LTC2057HMS8#PBF | Chopper-stabilized, 0.5 µV max VIO at 25°C; 125°C max operating temp; integrated EMI filtering. | Superior RF immunity for noisy automotive environments; higher quiescent current (1.1 mA vs 2.5 mA). | Choose LTC2057HMS8#PBF where EMI robustness in infotainment or ADAS subsystems is prioritized over supply current. |
Compared with TLC2652Q-8D, OPA189IDR offers higher bandwidth and eliminates external capacitors but removes programmable clamping; LTC2057HMS8#PBF delivers tighter initial offset and better EMI rejection at the cost of higher power consumption and no CLAMP functionality.
Availability
TLC2652Q-8D is available at Aetrix Electronics and suitable for automotive engine control units, industrial weigh scales, high-voltage battery management systems, and metrology equipment requiring stable component supply across extended temperature ranges.
Supply support for TLC2652Q-8D 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 connectivity technologies with manufacturing ISO 9001-certified facilities.
The TLC2652 family was developed for ultra-precision DC signal conditioning in harsh environments, targeting aerospace, defense, and automotive applications demanding guaranteed performance from −55°C to +125°C.
FAQ
What is the maximum operating temperature for the TLC2652Q-8D?
The TLC2652Q-8D is qualified for continuous operation from −40°C to +125°C ambient temperature, as defined by its Q-suffix rating. This specification is validated per MIL-PRF-38535 screening and includes full electrical testing at temperature extremes, making it suitable for under-hood automotive and industrial control applications where thermal derating is critical.
Does the TLC2652Q-8D require external capacitors to function?
Yes, the TLC2652Q-8D requires two external capacitors - one connected to pin 4 (CXA) and one to pin 5 (CXB) - to enable its chopper-stabilization circuitry. These capacitors form the timing network for auto-zeroing; omitting them disables offset cancellation and degrades DC accuracy to non-chopper levels. Typical value is 0.1 µF X7R ceramic.
Can the TLC2652Q-8D operate from a single supply?
Yes, the TLC2652Q-8D supports true single-supply operation because its common-mode input voltage range includes the negative rail (VDD−). With VDD− grounded, inputs can swing from 0 V to (VDD+ − 1.9 V), and the output delivers rail-to-rail swing capability - ideal for interfacing with ground-referenced transducers in portable instrumentation.
What is the purpose of the CLAMP pin on the TLC2652Q-8D?
The CLAMP pin (pin 7) on the TLC2652Q-8D sinks 25 µA when the output saturates, actively limiting voltage excursion and reducing overload recovery time by more than 50% compared to unclamped operation. This feature is essential in fast-sampling data acquisition systems where amplifier settling time directly impacts throughput.
How does the TLC2652Q-8D compare to the TLC2652C-8D in terms of offset voltage?
The TLC2652Q-8D specifies 3.5 µV maximum input offset voltage over −40°C to +125°C, whereas the TLC2652C-8D is rated at 1 µV max only at 25°C and 3 µV max over 0°C to 70°C. The Q-suffix variant guarantees tighter drift control (0.003 µV/°C typ) across its full military-grade temperature range, making it suitable for applications where ambient thermal excursions invalidate C-suffix calibration.
TLC2652Q-8D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-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:
- 0.6 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-8D FAQ
1.How can I place an order for TLC2652Q-8D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652Q-8D 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-8D reliable?
The price and inventory of TLC2652Q-8D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652Q-8D is usually 5 days.
3.What payment methods are accepted for TLC2652Q-8D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652Q-8D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652Q-8D?
TLC2652Q-8D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652Q-8D 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-8D?
For technical support, including TLC2652Q-8D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652Q-8D requirements.
6.How does Aetrix verify that TLC2652Q-8D is sourced from the original manufacturer or authorized distributors?
All TLC2652Q-8D 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-8D meets industry standards.
7.What is the process for return or replacement of TLC2652Q-8D?
All TLC2652Q-8D units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652Q-8D, 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-8D part is unused and in its original packaging.
Return procedure for TLC2652Q-8D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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