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Texas Instruments TLC2652AIP
- Part No.:
- TLC2652AIP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2652AIP.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,055
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Product details
Overview
TLC2652AIP from Texas Instruments is a chopper-stabilized precision operational amplifier optimized for ultra-low-drift, low-noise DC signal conditioning in strain gauge and thermocouple interfaces. It delivers 1 µV max input offset voltage, 0.003 µV/°C typical offset drift, 135 dB min open-loop gain, 120 dB min CMRR, and operates from ±1.9 V to ±8 V supplies with rail-to-rail common-mode input range including the negative rail.
For engineers reviewing the TLC2652AIP datasheet, TLC2652AIP pinout, TLC2652AIP application, or TLC2652AIP equivalent, key selection considerations include its guaranteed 1 µV max VIO at −40°C to 85°C, chopper frequency of 450 Hz, clamp pin functionality for fast overload recovery, and compatibility with single-supply configurations down to ±1.9 V.
Technical Context
The TLC2652AIP uses 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 external output clamping control and internal clock synchronization.
It features a CMOS input stage delivering 500 pA max input offset current over −40°C to 85°C, 110 dB min supply-voltage rejection ratio, and supports external clock override via INT/EXT and CLK IN pins on 14-pin packages-though the TLC2652AIP (14-pin plastic DIP, N package) implements the standard internal 450 Hz chopping frequency without user clock injection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1 µV maximum at −40°C to 85°C - enables sub-µV DC measurement stability in precision sensor front-ends. |
| Offset Drift vs Temp | 0.003 µV/°C typical - ensures minimal calibration drift over industrial temperature range. |
| Open-Loop Gain (AVD) | 135 dB minimum - provides >5 million V/V loop gain for high-accuracy closed-loop gain setting. |
| CMRR | 120 dB minimum - rejects common-mode interference in bridge-based transducer circuits. |
| Supply Range | ±1.9 V to ±8 V - supports low-voltage single-supply operation while maintaining rail-inclusive input range. |
| Chopping Frequency | 450 Hz - balances low-frequency noise reduction against modulation sideband placement in signal band. |
| Input Offset Current | 500 pA maximum at −55°C to 125°C - preserves high source impedance integrity in thermocouple and piezoelectric interfaces. |
Pinout & Package
TLC2652AIP is supplied in a 14-pin plastic DIP (N package), with 0.3-inch body width and through-hole mounting. Pin assignments follow the standard D014 footprint per TI SLOS019E.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | High-impedance CMOS node; accepts differential input signals referenced to VDD−. |
| 2 (IN+) | Non-Inverting Input | High-impedance CMOS node; supports rail-to-rail common-mode input down to VDD−. |
| 3 (CXA) | Chopper Capacitor A | Connects to external 10 µF capacitor for chopper stabilization; required for operation. |
| 4 (CXB) | Chopper Capacitor B | Connects to external 10 µF capacitor; forms chopper feedback network with CXA. |
| 5 (VDD−) | Negative Supply Rail | Reference for all inputs and outputs; common-mode range extends to this pin. |
| 6 (CLAMP) | Output Clamp Control | Sinks up to 25 µA when pulled low to reduce output recovery time after overload. |
| 7 (C RETURN) | Capacitor Return | Return path for external chopper capacitors; must be tied to VDD− for proper biasing. |
| 8 (OUT) | Amplifier Output | Class AB output stage capable of ±50 mA short-circuit current; drives 10 kΩ load to ±4.7 V. |
| 9 (NC) | No Internal Connection | Unbonded pad; no electrical function; leave unconnected. |
| 10 (NC) | No Internal Connection | Unbonded pad; no electrical function; leave unconnected. |
| 11 (CLK OUT) | Internal Clock Output | Provides 450 Hz square wave for synchronization or diagnostic monitoring. |
| 12 (INT/EXT) | Chopper Mode Select | Internally pulled high; tie low to enable external clock input on compatible variants (not used in TLC2652AIP). |
| 13 (CLK IN) | External Clock Input | Accepts TTL/CMOS clock; inactive in TLC2652AIP due to internal clock default. |
| 14 (VDD+) | Positive Supply Rail | Power supply input; supports operation from ±1.9 V to ±8 V dual supplies. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Nulls input offset voltage in real time across temperature, time, and supply variations - eliminates manual nulling and reduces system calibration burden. |
| Rail-Inclusive Common-Mode Input | Accepts input signals down to VDD− - enables direct interface with grounded-sensor bridges and single-supply transducer topologies. |
| Dedicated Output Clamp Pin | Reduces overload recovery time by actively sinking output current - critical for fast-settling data acquisition systems. |
| Internal ESD Protection | Withstands 2000 V HBM per MIL-STD-883C Method 3015.2 - improves handling robustness during PCB assembly and test. |
| Low-Frequency Noise Suppression | Peak-to-peak input noise of 2.8 µV (0–10 Hz) - enables resolution of microvolt-level thermocouple outputs without external filtering. |
Applications
| Strain Gauge Amplification | 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 bridge imbalance resolution. Use Value: 1 µV max VIO and 0.003 µV/°C drift ensure <0.01% full-scale error over −40°C to 85°C without recalibration. | Use Scenario: Cold-junction compensation and amplification of µV/°C 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 enabling direct connection to thermocouple junctions referenced to ground. Use Value: 500 pA max IIO prevents loading of high-impedance thermocouple wires, preserving Seebeck coefficient accuracy. |
| High-Impedance Sensor Interfaces | Low-Voltage Precision Instrumentation |
Use Scenario: Interfacing with piezoresistive, capacitive, or electrochemical sensors requiring high-Z, low-drift amplification. IC Role / Device Role: First-stage buffer and gain block where input bias current and offset stability dominate signal fidelity. Use Value: CMOS input stage and chopper stabilization maintain signal integrity even with GΩ-level source impedances and multi-hour measurement windows. | Use Scenario: Battery-powered portable meters, medical sensors, and handheld test equipment operating from ±2 V supplies. IC Role / Device Role: Core analog signal conditioner enabling accurate DC measurements under tight power constraints. Use Value: ±1.9 V minimum supply allows operation from two AA cells while retaining rail-inclusive input and 135 dB AVD for stable gain 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 |
|---|---|---|---|
| LTC2057HMS8#PBF | Zero-drift architecture with 0.5 µV max VIO, 0.005 µV/°C drift, but requires 2.7–11 V single supply only; no CLAMP pin. | Optimized for single-supply, ultra-low-power systems; lacks dedicated overload recovery control. | Select when lowest possible offset and single-supply simplicity outweigh need for dual-supply flexibility and active clamp control. |
| OPA189IDBVR | Zero-drift op-amp with 0.012 µV/°C max drift, 5.7 MHz GBW, but rated only to 125°C (not −40°C); no CLAMP or chopper capacitor pins. | Better bandwidth and lower noise density, but not qualified for extended industrial cold-start environments. | Select when higher speed and lower broadband noise are prioritized over guaranteed sub-µV offset at −40°C and active overload management. |
Compared with LTC2057HMS8#PBF and OPA189IDBVR, the TLC2652AIP uniquely combines guaranteed 1 µV max offset over −40°C to 85°C, rail-to-rail input including VDD−, dedicated CLAMP functionality, and explicit support for dual-supply operation down to ±1.9 V - making it optimal for ruggedized, low-drift DC instrumentation where thermal stability and overload behavior are critical.
Availability
TLC2652AIP is available at Aetrix Electronics and suitable for strain gauge amplification, thermocouple signal conditioning, high-impedance sensor interfaces, low-voltage precision instrumentation, and industrial process monitoring requiring stable component supply across extended temperature ranges.
Supply support for TLC2652AIP 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 headquartered in Dallas, Texas, specializing in analog and embedded processing technologies with over 50 years of precision amplifier innovation.
The TLC2652AIP belongs to TI's chopper-stabilized precision op-amp product line, designed specifically for ultra-low-drift DC signal conditioning in transducer interfaces where long-term calibration stability and thermal resilience are mandatory.
FAQ
What is the maximum input offset voltage specification for the TLC2652AIP over its full operating temperature range?
The TLC2652AIP has a maximum input offset voltage of 2.95 µV over its full operating temperature range of −40°C to 85°C, as specified in the electrical characteristics table for the I-suffix grade. This value reflects worst-case drift across temperature and ensures predictable performance in industrial environments without recalibration.
Does the TLC2652AIP require external capacitors, and if so, what values and type are recommended?
Yes, the TLC2652AIP requires two external 10 µF tantalum or aluminum electrolytic capacitors connected between pins CXA and CXB to C RETURN (pin 7). These capacitors form the chopper stabilization network and must be placed close to the device with low-ESR construction to maintain offset nulling integrity and avoid instability.
Can the TLC2652AIP operate from a single supply, and what is the minimum total supply voltage?
Yes, the TLC2652AIP supports true single-supply operation with its common-mode input range extending to the negative rail (VDD−). The minimum total supply voltage is ±1.9 V (i.e., 3.8 V total), allowing use with low-voltage rails such as +3.3 V and ground, provided VDD− is connected to ground and VDD+ to +3.3 V.
What is the purpose of the CLAMP pin on the TLC2652AIP, and how is it used in circuit design?
The CLAMP pin (pin 6) on the TLC2652AIP sinks up to 25 µA when pulled low, forcing rapid discharge of the output node during overload conditions. In circuit design, it is typically connected to a comparator output or microcontroller GPIO to shorten recovery time from saturation - critical in fast-sampling data acquisition systems where settling delay impacts throughput.
How does the TLC2652AIP differ from the standard TLC2652IP in terms of precision performance?
The TLC2652AIP guarantees a tighter 1 µV maximum input offset voltage at 25°C versus 3 µV for the TLC2652IP, and maintains 2.95 µV max over −40°C to 85°C versus 4.95 µV for the non-A version. This A-grade binning delivers superior initial accuracy and thermal stability, directly reducing system-level calibration effort in high-precision instrumentation.
TLC2652AIP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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:
- 0.5 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:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC2652AIP FAQ
1.How can I place an order for TLC2652AIP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652AIP 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 TLC2652AIP reliable?
The price and inventory of TLC2652AIP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652AIP is usually 5 days.
3.What payment methods are accepted for TLC2652AIP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652AIP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652AIP?
TLC2652AIP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652AIP 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 TLC2652AIP?
For technical support, including TLC2652AIP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652AIP requirements.
6.How does Aetrix verify that TLC2652AIP is sourced from the original manufacturer or authorized distributors?
All TLC2652AIP 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 TLC2652AIP meets industry standards.
7.What is the process for return or replacement of TLC2652AIP?
All TLC2652AIP units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652AIP, 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 TLC2652AIP part is unused and in its original packaging.
Return procedure for TLC2652AIP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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