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Texas Instruments TLC2652IP
- Part No.:
- TLC2652IP
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-DIP (0.300", 7.62mm)
- Datasheet:
-
TLC2652IP.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8DIP
- Quantity:
- Payment:
- Shipping:
Inventory:9,634
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Product details
Overview
TLC2652IP from Texas Instruments is a chopper-stabilized precision operational amplifier designed for ultra-low-drift, low-noise signal conditioning in transducer 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 TLC2652IP datasheet, TLC2652IP pinout, TLC2652IP application, or TLC2652IP equivalent, this device is selected for high-accuracy DC-coupled amplification where long-term stability, thermal drift minimization, and single-supply compatibility are critical-especially in strain gauge, thermocouple, and precision sensor front-ends.
Technical Context
The TLC2652IP uses Texas Instruments' Advanced LinCMOS™ process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage in real time across temperature, time, supply, and common-mode variations. Its architecture includes an internal 450 Hz chopping frequency and dedicated CLAMP and C RETURN terminals for external recovery control.
It features CMOS input stage with 500 pA max input offset current over −40°C to +85°C, rail-inclusive common-mode input range (VDD− to VDD+ −1.9 V), and output clamp capability enabling fast overload recovery. No noise degradation occurs when external capacitors are connected to VDD−.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1 µV max at 25°C - enables sub-microvolt DC measurement accuracy without manual nulling |
| Offset Drift vs Temp | 0.003 µV/°C typ - ensures <10 nV/°C system-level drift in precision instrumentation |
| Open-Loop Gain (AVD) | 135 dB min - supports >5 million V/V closed-loop gain stability for high-resolution feedback |
| CMRR | 120 dB min - rejects >1 MΩ common-mode interference in unshielded sensor wiring |
| Supply Range | ±1.9 V to ±8 V - allows operation from low-voltage battery rails up to industrial ±5 V systems |
| Input Offset Current | 500 pA max (−40°C to +85°C) - preserves high-impedance source integrity in piezoresistive sensors |
| Chopping Frequency | 450 Hz - places switching artifacts far below audio band, avoiding aliasing in DC-coupled data acquisition |
Pinout & Package
Package: 14-pin plastic DIP (N package), through-hole mounting, JEDEC MS-001 compatible.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (INT/EXT) | Chopper Clock Mode Select | Ground = internal clock; open or high = external clock input - enables synchronization with system timing |
| 2 (CLK IN) | External Clock Input | Accepts TTL/CMOS logic levels without level-shifting in single-supply configurations |
| 3 (CLK OUT) | Internal Clock Output | Provides buffered 450 Hz square wave for monitoring or cascading chopper timing |
| 4 (VDD+) | Positive Supply Rail | Connects to main positive supply; decoupling capacitor required at pin |
| 5 (OUT) | Amplifier Output | Class AB output stage capable of ±50 mA surge; supports clamp diode connection |
| 6 (CLAMP) | Output Clamp Control | Drives external clamp circuit to reduce recovery time after saturation |
| 7 (C RETURN) | Chopper Capacitor Return | Reference node for external stabilization capacitors; must be tied to VDD− |
| 8 (VDD−) | Negative Supply Rail | Connects to main negative supply; serves as reference for C RETURN and bias network |
| 9 (IN−) | Inverting Input | High-impedance CMOS node; differential pair input for feedback configuration |
| 10 (IN+) | Non-Inverting Input | High-impedance CMOS node; accepts signals down to VDD− rail (rail-to-rail input) |
| 11 (CXA) | Chopper Stabilization Cap A | Connects to external capacitor (typically 1 µF) for offset nulling loop stability |
| 12 (CXB) | Chopper Stabilization Cap B | Second terminal of external capacitor; forms integrator with CXA for chopper error correction |
| 13 (NC) | No Internal Connection | Not bonded; electrically isolated - no routing or grounding required |
| 14 (NC) | No Internal Connection | Not bonded; electrically isolated - no routing or grounding required |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Real-time input offset cancellation eliminates manual trimming and aging-induced drift in sealed instruments |
| Rail-Inclusive Common-Mode Range | Input accepts signals at VDD−, enabling true single-supply operation with ground-referenced sensors |
| Dual External Capacitor Interface | CXA/CXB pins allow external 1 µF capacitor placement for optimized low-frequency noise and stability |
| Output Clamp Terminal | CLAMP pin drives external diodes to limit saturation recovery time to <1 µs in overload conditions |
| MIL-STD-883C ESD Protection | 2000 V HBM rating ensures robust handling during PCB assembly and field service |
Applications
| Strain Gauge Amplifier | Thermocouple Signal Conditioning |
|---|---|
Use Scenario: Amplifying mV-level Wheatstone bridge outputs from load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier front-end with zero-drift gain staging. Use Value: 1 µV offset ensures ≤0.005% full-scale error over temperature without recalibration. | Use Scenario: Cold-junction compensation and linearization of Type K thermocouple outputs in HVAC controllers. IC Role / Device Role / Timing Role: Low-drift, high-input-impedance buffer and gain stage before ADC sampling. Use Value: 0.003 µV/°C drift prevents >10 µV thermal EMF error across 0–85°C operating range. |
| Medical Sensor Front-End | High-Resolution Data Acquisition |
Use Scenario: Biopotential signal amplification (ECG, EEG) requiring ultra-low DC drift and high CMRR. IC Role / Device Role / Timing Role: First-stage DC-coupled amplifier with rail-to-rail input for direct electrode coupling. Use Value: 120 dB CMRR rejects 50/60 Hz mains interference without AC coupling or notch filters. | Use Scenario: Precision analog input module for 24-bit sigma-delta ADCs in test equipment. IC Role / Device Role / Timing Role: Low-noise, low-drift programmable gain amplifier (PGA) driver stage. Use Value: 94 nV/√Hz @10 Hz and 2.8 µVpp (0–10 Hz) enable sub-µV effective resolution. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2057IS8#PBF | Zero-drift architecture with 0.5 µV max VIO, 0.005 µV/°C drift, but requires dual supply only; no CLAMP pin | Superior offset spec but lacks output clamping and rail-inclusive input for single-supply sensor interfaces | Select when ultimate offset performance is prioritized over single-supply flexibility and fast overload recovery |
| OPA2189IDR | Zero-drift op-amp with 0.005 µV/°C drift, 140 dB CMRR, but rated only to 125°C junction temp and no external clock interface | Higher CMRR and bandwidth (12 MHz GBW), yet lacks INT/EXT clock control and military-grade temp range support | Select for higher-speed precision applications where chopper synchronization is unnecessary and extended temperature is not required |
Compared with LTC2057IS8#PBF and OPA2189IDR, the TLC2652IP uniquely combines military-grade temperature range (−40°C to +85°C), rail-to-rail input with single-supply capability, integrated clamp control, and user-accessible chopper clock-making it optimal for ruggedized, low-drift sensor signal chains where reliability and configurability outweigh raw speed or lowest offset.
Availability
TLC2652IP is available at Aetrix Electronics and suitable for strain gauge amplifiers, thermocouple interfaces, and medical sensor front-ends requiring stable component supply across extended temperature ranges and long product lifecycles.
Supply support for TLC2652IP 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 specializing in analog, embedded processing, and connectivity technologies with over 50 years of innovation in precision analog ICs.
The TLC2652IP belongs to TI's precision chopper-stabilized op-amp family, engineered specifically for ultra-low-drift DC signal conditioning in harsh environments-targeting industrial, aerospace, and medical instrumentation where calibration stability is non-negotiable.
FAQ
What is the maximum input offset voltage specification for the TLC2652IP over its full operating temperature range?
The TLC2652IP has a maximum input offset voltage of 4.95 µV across its full operating temperature range of −40°C to +85°C. This value is specified in the electrical characteristics table for the I-suffix grade under "Full range" test conditions. At 25°C, the typical VIO is 0.6 µV with a maximum of 3 µV, confirming its classification as an ultra-precision chopper-stabilized op-amp. The TLC2652IP maintains this performance without external trimming.
Does the TLC2652IP support single-supply operation, and what is its common-mode input voltage range?
Yes, the TLC2652IP supports true single-supply operation with a common-mode input voltage range extending to the negative rail (VDD−). Per the recommended operating conditions, VIC spans from VDD− to VDD+ −1.9 V at all temperatures. This rail-to-rail input capability enables direct interfacing with ground-referenced sensors such as strain gauges and thermocouples without level-shifting circuitry-making the TLC2652IP especially valuable in battery-powered or low-voltage industrial systems.
What external components are required for basic operation of the TLC2652IP?
The TLC2652IP requires two external 1 µF capacitors connected between pins CXA and CXB for chopper-stabilization loop stability. Additionally, standard 0.1 µF ceramic bypass capacitors are required on both VDD+ and VDD− pins. If using the CLAMP function, an external diode network must be connected to the CLAMP and C RETURN pins. No external clock is needed unless the INT/EXT pin is configured for external synchronization-then a TTL/CMOS-compatible 450 Hz (or harmonically related) clock is applied to CLK IN.
How does the CLAMP pin on the TLC2652IP improve system performance in overload conditions?
The CLAMP pin on the TLC2652IP provides active control of the output stage during saturation, reducing recovery time from overload by driving external clamp diodes. When the output hits rail, the CLAMP pin sources/sinks current to rapidly discharge internal nodes-cutting recovery latency to under 1 µs versus several microseconds in unclamped operation. This feature is critical in closed-loop systems like servo controllers or fast-settling data acquisition where amplifier recovery delay introduces phase lag or measurement error. The TLC2652IP's CLAMP functionality is fully compatible with single-supply configurations.
Is the TLC2652IP pin-compatible with other devices in the TLC2652 family, such as the TLC2652CP or TLC2652AIN?
No, the TLC2652IP is not pin-compatible with the TLC2652CP or TLC2652AIN due to differing package types and pin assignments. The TLC2652IP uses a 14-pin plastic DIP (N package), while the TLC2652CP is an 8-pin SOIC (D008) and the TLC2652AIN is a 14-pin ceramic DIP (J package). Although all share identical functional pin definitions (e.g., IN+, IN−, VDD+, etc.), physical pinouts differ: the 8-pin version omits CLK IN, CLK OUT, INT/EXT, CLAMP, and C RETURN. Therefore, PCB layout changes are required when substituting across packages-even within the same family.
TLC2652IP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-DIP (0.300", 7.62mm)
- 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 ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- 8-PDIP
TLC2652IP FAQ
1.How can I place an order for TLC2652IP through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652IP 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 TLC2652IP reliable?
The price and inventory of TLC2652IP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652IP is usually 5 days.
3.What payment methods are accepted for TLC2652IP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652IP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652IP?
TLC2652IP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652IP 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 TLC2652IP?
For technical support, including TLC2652IP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652IP requirements.
6.How does Aetrix verify that TLC2652IP is sourced from the original manufacturer or authorized distributors?
All TLC2652IP 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 TLC2652IP meets industry standards.
7.What is the process for return or replacement of TLC2652IP?
All TLC2652IP units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652IP, 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 TLC2652IP part is unused and in its original packaging.
Return procedure for TLC2652IP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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