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Texas Instruments TLC2654C-8D
- Part No.:
- TLC2654C-8D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2654C-8D.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,076
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Product details
Overview
TLC2654C-8D from Texas Instruments is a chopper-stabilized operational amplifier optimized for ultra-low-noise, high-precision DC signal conditioning. It delivers 0.5 µVPP (0–1 Hz), 13 nV/√Hz at 1 kHz, 10 kHz chopping frequency, and 10 µV max input offset voltage over 0°C to 70°C - enabling thermocouple amplification, strain gauge interfaces, and precision sensor front-ends in industrial instrumentation.
For engineers reviewing the TLC2654C-8D datasheet, TLC2654C-8D pinout, TLC2654C-8D application, or TLC2654C-8D equivalent, key selection criteria include sub-microvolt offset stability, rail-to-rail common-mode input range (including VDD–), noise performance below 10 kHz, and compatibility with single-supply operation down to ±2.3 V.
Technical Context
The TLC2654C-8D uses Advanced LinCMOS™ process technology combined with continuous auto-zeroing chopper stabilization to null input offset voltage dynamically across temperature, time, and supply variations. Its 10 kHz internal chopping frequency eliminates clock noise below 10 kHz and intermodulation error up to 5 kHz.
It features an integrated clamp circuit (CLAMP pin) for fast overload recovery, supports external capacitor-based compensation via CXA/CXB pins, and maintains CMOS-level input impedance while operating with supply voltages from ±2.3 V to ±8 V and common-mode input range extending to the negative rail.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 10 µV max (0°C to 70°C); enables <1 µV drift-sensitive DC measurements without manual trimming |
| Offset Tempco | 0.05 µV/°C max; ensures stable calibration over industrial temperature range |
| Input Noise (0–1 Hz) | 0.5 µVPP typ; critical for low-frequency sensor signals like thermocouples |
| Input Noise (1 kHz) | 13 nV/√Hz typ; supports wideband precision analog front-ends up to ~10 kHz |
| Chopping Frequency | 10 kHz typ; suppresses 1/f noise and avoids audible band interference |
| Common-Mode Range | Includes VDD–; allows true single-supply operation with ground-referenced inputs |
| Supply Voltage Range | ±2.3 V to ±8 V; compatible with low-voltage battery and dual-rail systems |
Pinout & Package
Package: 8-pin SOIC (D package), body size 3.9 mm × 4.9 mm, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CXA) | Chopper Compensation A | Connects external capacitor to set chopper timing; required for stable operation |
| 2 (IN–) | Inverting Input | Differential input node; high-impedance CMOS input (≤60 pA bias current) |
| 3 (IN+) | Non-inverting Input | Differential input node; supports common-mode voltage down to VDD– |
| 4 (VDD–) | Negative Supply Rail | Reference for all internal circuitry; common-mode range includes this pin |
| 5 (CXB) | Chopper Compensation B | Second compensation terminal; used with CXA to form chopper oscillator tank |
| 6 (VDD+) | Positive Supply Rail | Power supply connection; supports ±2.3 V to ±8 V operation |
| 7 (OUT) | Amplifier Output | Class AB output stage; drives ≥10 kΩ load with ±4.7 V swing (±5 V supply) |
| 8 (CLAMP) | Output Clamp Control | External clamp diode connection point to reduce overload recovery time |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Continuous auto-zeroing eliminates drift-induced errors in long-duration DC measurements |
| No Clock Noise Below 10 kHz | Enables clean signal acquisition in sub-audio and precision metrology bands |
| Rail-Inclusive Common-Mode Range | Supports direct interfacing to grounded sensors without level-shifting circuitry |
| Integrated Output Clamp Pin | Reduces recovery time after saturation - critical for multiplexed sensor systems |
| ESD Protection | 2000 V HBM rating per MIL-STD-883C Method 3015; robust handling in assembly environments |
Applications
| Thermocouple Amplifier | Strain Gauge Signal Conditioning |
|---|---|
Use Scenario: Amplifying microvolt-level EMF from Type-K thermocouples in furnace monitoring systems. IC Role / Device Role / Timing Role: Precision DC-coupled gain stage with sub-µV offset and near-zero drift over 0–70°C. Use Value: Eliminates need for external cold-junction compensation or periodic recalibration due to 0.05 µV/°C tempco and 10 µV max VIO. | Use Scenario: Reading Wheatstone bridge outputs from metal foil strain gauges in load cells. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance instrumentation amplifier front-end. Use Value: 0.5 µVPP (0–1 Hz) noise floor preserves resolution of <10 ppm full-scale bridge signals. |
| Low-Frequency Data Acquisition | Single-Supply Sensor Interface |
Use Scenario: Front-end for 16-bit delta-sigma ADCs sampling slow-varying environmental sensors (e.g., humidity, pressure). IC Role / Device Role / Timing Role: Anti-aliasing and gain buffer with ultra-low 1/f noise contribution. Use Value: 13 nV/√Hz at 1 kHz and no intermodulation error below 5 kHz ensure clean digitization without spectral contamination. | Use Scenario: Interfacing ground-referenced pH electrodes or current-loop receivers in portable analyzers. IC Role / Device Role / Timing Role: Single-supply op-amp with input range extending to VDD– and rail-to-rail-compatible output swing. Use Value: Operates from +5 V supply with inputs at 0 V - removes need for dual supplies or charge pumps in compact designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar chopper-stabilized op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2652ACD | 450 Hz chopping frequency; higher 1/f noise corner; lower quiescent current (1.1 mA) | Better suited for ultra-low-power, sub-100 Hz applications where 10 kHz clock artifacts must be avoided | Select TLC2652ACD only when system bandwidth <500 Hz and power budget <1.2 mA is mandatory |
| OPA2189IDR | Zero-drift architecture with 5.2 nV/√Hz @ 1 kHz; wider GBW (12 MHz); no external CXA/CXB capacitors required | Higher speed, lower noise, and simplified layout - but lacks CLAMP pin and rail-inclusive CMVR at ±2.3 V | Choose OPA2189IDR for new designs requiring >1 MHz bandwidth or automated PCB assembly without trimming caps |
Compared with TLC2652ACD and OPA2189IDR, the TLC2654C-8D uniquely balances ultra-low 0–10 Hz noise, rail-inclusive input range at low supply, and user-controllable chopping frequency - making it optimal for legacy and cost-sensitive precision DC systems where external capacitor tuning is acceptable.
Availability
TLC2654C-8D is available at Aetrix Electronics and suitable for industrial instrumentation, test equipment, and sensor interface modules requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC2654C-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 company specializing in analog and embedded processing technologies, with decades of leadership in precision op-amps and signal-chain solutions.
The TLC2654C-8D belongs to TI's Advanced LinCMOS™ chopper-stabilized op-amp family, designed specifically for high-accuracy, low-drift DC measurement systems in industrial, scientific, and automotive-grade applications.
FAQ
What is the maximum operating temperature range for the TLC2654C-8D?
The TLC2654C-8D is characterized for operation from 0°C to 70°C (C-suffix). This temperature grade is validated per TI's SLOS020G datasheet and applies to all electrical specifications unless otherwise noted. Operation outside this range may result in parametric degradation or functional failure.
Does the TLC2654C-8D require external capacitors to operate?
Yes, the TLC2654C-8D requires two external capacitors connected to pins CXA (pin 1) and CXB (pin 5) to configure its internal chopper oscillator. These capacitors determine the 10 kHz chopping frequency and are essential for stable auto-zeroing operation - omission results in undefined behavior or failure to stabilize offset.
Can the TLC2654C-8D operate from a single +5 V supply?
Yes, the TLC2654C-8D supports single-supply operation: connect VDD+ to +5 V and VDD– to ground. Its common-mode input voltage range includes the negative rail (0 V), and output swings to within 0.3 V of each rail under 10 kΩ load - enabling direct interfacing with ground-referenced sensors without level-shifting circuitry.
What is the purpose of the CLAMP pin on the TLC2654C-8D?
The CLAMP pin (pin 8) provides a dedicated terminal to connect an external clamp diode between the output and either supply rail. This reduces overload recovery time when the amplifier saturates - a critical feature in multiplexed sensor systems or fast-settling data acquisition where output phase reversal must be minimized.
How does the TLC2654C-8D compare to the TLC2654AC-8D variant?
The TLC2654C-8D has a maximum input offset voltage of 20 µV (typical 5 µV), while the TLC2654AC-8D guarantees ≤10 µV max. Both share identical noise performance, chopping frequency, and pinout. The 'A' suffix denotes tighter VIO screening - select TLC2654AC-8D only when sub-10 µV initial offset is required for high-accuracy calibration-critical applications.
TLC2654C-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:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 3.7V/µs
- Gain Bandwidth Product:
- 1.9 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 5 µV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4.6 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2654C-8D FAQ
1.How can I place an order for TLC2654C-8D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2654C-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 TLC2654C-8D reliable?
The price and inventory of TLC2654C-8D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2654C-8D is usually 5 days.
3.What payment methods are accepted for TLC2654C-8D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2654C-8D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2654C-8D?
TLC2654C-8D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2654C-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 TLC2654C-8D?
For technical support, including TLC2654C-8D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2654C-8D requirements.
6.How does Aetrix verify that TLC2654C-8D is sourced from the original manufacturer or authorized distributors?
All TLC2654C-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 TLC2654C-8D meets industry standards.
7.What is the process for return or replacement of TLC2654C-8D?
All TLC2654C-8D units undergo pre-shipment inspection (PSI). If there is an issue with TLC2654C-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 TLC2654C-8D part is unused and in its original packaging.
Return procedure for TLC2654C-8D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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