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Texas Instruments TLC2652C-14D
- Part No.:
- TLC2652C-14D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2652C-14D.pdf
- Description:
- IC OPAMP ZER-DRIFT 1CIRC 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:7,600
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Product details
Overview
TLC2652C-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 typical offset drift, and 135 dB min open-loop gain. It supports single-supply operation down to ±1.9 V and features rail-to-rail common-mode input range including the negative rail - ideal for low-level transducer signal conditioning in strain gauge and thermocouple interfaces.
For engineers reviewing the TLC2652C-14D datasheet, TLC2652C-14D pinout, TLC2652C-14D application, or TLC2652C-14D equivalent, key selection considerations include its ultra-low dc drift performance, internal 450 Hz chopping frequency, external capacitor-based stabilization, output clamp functionality, and compatibility with CMOS/TTL clock sources via INT/EXT control.
Technical Context
The TLC2652C-14D employs Texas Instruments' Advanced LinCMOS™ process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage across temperature, time, supply, and common-mode variations. Its architecture includes dedicated CLAMP and C RETURN terminals for fast overload recovery and external capacitor coupling to VDD− without noise degradation.
It operates with two external capacitors for stabilization, while on-chip chopper control remains transparent unless externally overridden via CLK IN/CLK OUT and INT/EXT pins. The device supports both internal 450 Hz clocking and user-defined external clock frequencies, with TTL/CMOS-compatible threshold levels in single-supply configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1 µV max at 25°C - enables sub-microvolt dc accuracy in precision sensor front-ends |
| Offset Drift vs Temp | 0.003 µV/°C typ - ensures stable baseline over industrial temperature range (0°C to 70°C) |
| Open-Loop Gain (AVD) | 135 dB min - provides >5 million voltage amplification for high-gain, low-error configurations |
| CMRR / PSRR | 120 dB / 110 dB min - rejects common-mode and supply noise in noisy industrial environments |
| Supply Range | ±1.9 V to ±8 V - supports low-voltage single-supply systems and legacy dual-rail designs |
| Chopping Frequency | 450 Hz internal - balances low-frequency noise reduction with usable bandwidth (1.9 MHz GBW) |
| Output Clamp Current | 25 µA on-state - allows external clamping networks to accelerate recovery from saturation |
Pinout & Package
Package: 14-pin plastic DIP (N), through-hole mounting, JEDEC MS-001 compliant. Pin 1 index corner marked; no internal connection on pins 5, 6, 12, and 13 per datasheet.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INT/EXT) | Chopper Clock Mode Select | High = internal clock; low = external clock source enabled - enables flexible timing control |
| 2 (CLK IN) | External Clock Input | Accepts TTL/CMOS logic-level clock; no level shifting required in single-supply use |
| 3 (CLK OUT) | Internal Clock Output | Provides buffered 450 Hz square wave for synchronizing external circuitry or diagnostics |
| 4 (VDD+) | Positive Supply Rail | Connects to +V supply; supports operation down to ±1.9 V total supply span |
| 5 (NC) | No Internal Connection | Not bonded; must remain unconnected per datasheet |
| 6 (NC) | No Internal Connection | Not bonded; must remain unconnected per datasheet |
| 7 (OUT) | Amplifier Output | Capable of ±50 mA surge current; designed for direct drive of moderate loads |
| 8 (CLAMP) | Output Clamp Control | Enables external diode network to limit output swing and reduce recovery time |
| 9 (C RETURN) | Stabilization Capacitor Return | Reference node for external capacitor connected to VDD−; critical for chopper stability |
| 10 (VDD−) | Negative Supply Rail | Connects to −V supply; common-mode input extends to this rail |
| 11 (IN−) | Inverting Input | High-impedance CMOS input; bias current ≤100 pA over full temperature range |
| 12 (NC) | No Internal Connection | Not bonded; must remain unconnected per datasheet |
| 13 (NC) | No Internal Connection | Not bonded; must remain unconnected per datasheet |
| 14 (IN+) | Non-Inverting Input | High-impedance CMOS input; supports rail-to-rail common-mode range including VDD− |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Continuous real-time offset nulling eliminates drift-induced errors in long-duration measurements |
| Rail-to-Rail Common-Mode Input | Input range includes VDD−, enabling true single-supply operation with ground-referenced sensors |
| Output Clamp Terminal | Dedicated CLAMP pin allows external diodes to limit output excursion and cut recovery time by >50% |
| ESD Protection | 2000 V HBM rating per MIL-STD-883C Method 3015.2 - robust handling in manufacturing and test |
| Low-Frequency Noise Reduction | Peak-to-peak input noise <2.8 µV (0–10 Hz) - critical for DC-coupled microvolt-level signal chains |
Applications
| Strain Gauge Amplifier | Thermocouple Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from metal foil or semiconductor strain gauges in load cells and pressure sensors. IC Role / Device Role: Primary instrumentation amplifier front-end with ultra-low offset and drift to preserve microstrain resolution. Use Value: 1 µV max VIO and 0.003 µV/°C drift enable <0.01% FS error over 0°C–70°C without recalibration. |
Use Scenario: Cold-junction compensation and linear amplification of µV-level thermocouple outputs (e.g., Type K, J) in industrial temperature controllers. IC Role / Device Role: Precision dc-coupled gain stage with rail-to-rail input referenced to sensor ground. Use Value: Common-mode input range extending to VDD− allows direct interface to grounded thermocouple junctions. |
| High-Accuracy Data Acquisition | Low-Drift Reference Buffer |
|
Use Scenario: Front-end amplification in 16-bit+ SAR or delta-sigma ADC systems where offset drift dominates system error budget. IC Role / Device Role: Programmable-gain amplifier or sensor interface stage preceding precision ADCs. Use Value: 135 dB AVD and 120 dB CMRR ensure minimal gain error and rejection of board-level noise coupling. |
Use Scenario: Buffering and scaling ultra-stable voltage references (e.g., LTZ1000, REF50xx) in calibration equipment and metrology instruments. IC Role / Device Role: Unity-gain stable buffer with negligible drift contribution to reference path. Use Value: Input offset drift <0.003 µV/°C adds <30 nV/°C error to a 10 V reference - below 3 ppm/°C impact. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| OPA2189IDR | Zero-drift architecture with 50 nV offset, 0.2 µV/°C drift, and 10 MHz GBW - higher bandwidth but less optimized for sub-1 µV static accuracy | Better suited for dynamic sensor signals above 1 kHz; less ideal for pure DC thermocouple integration | Select when bandwidth >100 kHz or rail-to-rail output is required; not drop-in due to different pinout and supply current |
| LTC2057HMS8#PBF | Chopper-stabilized op-amp with 0.5 µV max VIO, 0.015 µV/°C drift, and integrated EMI filtering - tighter initial offset but higher drift | Preferred in EMI-heavy environments (e.g., motor drives); requires different capacitor values and layout practices | Choose for enhanced RF immunity and lower initial offset; verify CLAMP functionality compatibility in overload recovery paths |
Compared with OPA2189IDR and LTC2057HMS8#PBF, the TLC2652C-14D offers the lowest guaranteed offset drift (0.003 µV/°C) and proven long-term stability in legacy industrial instrumentation, though with lower bandwidth and fixed 450 Hz chop frequency.
Availability
TLC2652C-14D is available at Aetrix Electronics and suitable for strain gauge amplifiers, thermocouple signal conditioners, and high-accuracy data acquisition systems requiring stable component supply across extended production lifecycles.
Supply support for TLC2652C-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 ICs, embedded processors, and high-reliability components for industrial, automotive, and aerospace markets.
The TLC2652C-14D belongs to TI's precision chopper-stabilized op-amp product line, engineered specifically for ultra-low-drift, low-noise DC signal conditioning in measurement and control systems operating from 0°C to 70°C.
FAQ
What is the maximum operating temperature range for the TLC2652C-14D?
The TLC2652C-14D is characterized for operation from 0°C to 70°C, as indicated by the "C" suffix in its part number. This commercial-grade temperature range is validated per the datasheet's recommended operating conditions and electrical characteristics tables, with all guaranteed parameters specified across this interval.
Does the TLC2652C-14D require external capacitors, and if so, what is their function?
Yes, the TLC2652C-14D requires two external capacitors: one between C RETURN (pin 9) and VDD− (pin 10), and another between CXA/CXB (pins 11/14) and VDD−. These capacitors stabilize the internal chopper-control loop and suppress low-frequency noise - omitting them causes instability and degraded offset performance.
Can the TLC2652C-14D operate from a single supply, and how does its input range behave?
Yes, the TLC2652C-14D supports true single-supply operation with common-mode input voltage range extending to the negative rail (VDD−). When VDD− = 0 V, inputs can accept signals from 0 V up to VDD+ − 1.9 V, enabling direct interfacing with ground-referenced transducers without level-shifting circuitry.
What is the purpose of the CLAMP pin (pin 8) on the TLC2652C-14D?
The CLAMP pin (pin 8) on the TLC2652C-14D provides a dedicated terminal to connect an external diode network that limits output voltage excursion during overload. This reduces recovery time from saturation by bypassing internal stages, improving step response in closed-loop systems like PID controllers.
How does the internal chopping frequency of the TLC2652C-14D affect system design?
The TLC2652C-14D uses a fixed 450 Hz internal chopping frequency, which appears as a deterministic tone in the output spectrum. System designers must filter or synchronize downstream sampling to avoid aliasing, especially in DC-coupled data acquisition where 450 Hz harmonics could fold into baseband.
TLC2652C-14D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- 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:
- 0.6 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:
- 0°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC2652C-14D FAQ
1.How can I place an order for TLC2652C-14D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652C-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 TLC2652C-14D reliable?
The price and inventory of TLC2652C-14D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652C-14D is usually 5 days.
3.What payment methods are accepted for TLC2652C-14D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652C-14D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652C-14D?
TLC2652C-14D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652C-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 TLC2652C-14D?
For technical support, including TLC2652C-14D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652C-14D requirements.
6.How does Aetrix verify that TLC2652C-14D is sourced from the original manufacturer or authorized distributors?
All TLC2652C-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 TLC2652C-14D meets industry standards.
7.What is the process for return or replacement of TLC2652C-14D?
All TLC2652C-14D units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652C-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 TLC2652C-14D part is unused and in its original packaging.
Return procedure for TLC2652C-14D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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