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Texas Instruments TLC2652M-8D
- Part No.:
- TLC2652M-8D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2652M-8D.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,195
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Product details
Overview
TLC2652M-8D from Texas Instruments is a military-grade chopper-stabilized operational amplifier optimized for ultra-low-drift precision signal conditioning in harsh environments. It delivers 3 µV max input offset voltage, 0.003 µV/°C typical offset drift, 135 dB min open-loop gain, 120 dB min CMRR, and operates across −55°C to 125°C with single-supply capability down to ±1.9 V. It is used in strain gauge amplifiers, thermocouple interfaces, and high-reliability transducer front-ends.
For engineers reviewing the TLC2652M-8D datasheet, TLC2652M-8D pinout, TLC2652M-8D application, or TLC2652M-8D equivalent, this page provides verified electrical specs, military-temperature validated performance data, chopper-control interface details, and direct alternatives for precision analog design under extended thermal stress.
Technical Context
The TLC2652M-8D employs Texas Instruments' Advanced LinCMOS™ process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage in real time-compensating for temperature, time, common-mode voltage, and supply variations. Its architecture includes dedicated CLAMP and C RETURN terminals for external recovery control and low-noise biasing.
It features an internal 450 Hz chopping frequency, rail-to-rail common-mode input range (including the negative rail), and robust ±100-mA surge current tolerance on inputs/outputs. The device requires two external capacitors but hides chopper timing from the user unless external clock control is enabled via INT/EXT pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 3 µV max over −55°C to 125°C - enables sub-µV-level DC accuracy in long-term sensor measurements without recalibration. |
| Offset Drift | 0.003 µV/°C typ - ensures <10 nV/°C thermal-induced error in precision bridge circuits across full military temp range. |
| Open-Loop Gain | 135 dB min - supports >5 million V/V closed-loop gain stability for high-resolution instrumentation amplifiers. |
| CMRR | 120 dB min - rejects >1 million:1 common-mode interference, critical for low-level thermocouple signals in noisy industrial settings. |
| Supply Range | ±1.9 V to ±8 V - allows operation from low-voltage battery systems up to industrial ±5 V rails with no performance degradation. |
| Chopping Frequency | 450 Hz - places residual chopper noise below 1 Hz, avoiding aliasing in DC-coupled 1/f-noise-sensitive applications. |
| Input Bias Current | 500 pA max over full temperature range - preserves high-impedance source integrity in piezoelectric and pH electrode interfaces. |
Pinout & Package
Package: 8-pin plastic DIP (P package), through-hole mounting, JEDEC MS-001 compatible. Pin 1 = IN−, Pin 2 = IN+, Pin 3 = C RETURN, Pin 4 = VDD−, Pin 5 = CLAMP, Pin 6 = OUT, Pin 7 = CXA, Pin 8 = VDD+.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN− | Inverting input | High-impedance CMOS node; accepts differential signals referenced to VDD− or ground in single-supply configurations. |
| IN+ | Non-inverting input | Matches IN− in offset and drift; enables true rail-to-rail common-mode operation including negative rail. |
| C RETURN | Chopper capacitor return | Reference node for external stabilization capacitors; must be connected to VDD− for proper chopper biasing. |
| VDD− | Negative supply rail | Ground reference in single-supply mode; supports common-mode input down to this rail. |
| CLAMP | Output clamp control | Allows external clamping to reduce overload recovery time; sinks 25 µA when active. |
| OUT | Amplified output | Capable of ±4.7 V swing into 10 kΩ load at ±5 V supplies; drives low-impedance loads with 1.3 V/µs min slew rate. |
| CXA | Chopper capacitor A | One terminal of internal chopper capacitor network; connects externally to stabilize chopping action. |
| VDD+ | Positive supply rail | Accepts up to +8 V; supplies internal bias and chopper logic; enables single-supply operation with VDD− = GND. |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail common-mode input | Includes VDD− rail - eliminates level-shifting circuitry in single-supply sensor interfaces like 0–5 V thermocouple amplifiers. |
| Internal chopper stabilization | 450 Hz fixed frequency - reduces 1/f noise by >20× vs non-chopper op-amps, enabling stable µV-level DC gain. |
| Output clamp pin | 25 µA sink capability - cuts overload recovery time by >50% in fast-settling data acquisition systems. |
| Military temperature rating | −55°C to 125°C operation - qualified per MIL-PRF-38535 for avionics, defense electronics, and downhole instrumentation. |
| ESD protection | 2000 V HBM - prevents functional failure during board handling and field maintenance in ruggedized systems. |
Applications
| Strain Gauge Amplifier | Thermocouple Interface |
|---|---|
Use Scenario: Amplifying microvolt-level Wheatstone bridge outputs from load cells in aerospace structural monitoring. IC Role / Device Role / Timing Role: Precision DC-coupled instrumentation amplifier core with chopper nulling to suppress thermal EMF drift. Use Value: Maintains ≤0.1 µV/°C system offset drift over −55°C to 125°C, eliminating need for periodic zero calibration. | Use Scenario: Cold-junction compensation and linearization of Type K thermocouples in turbine engine controls. IC Role / Device Role / Timing Role: Low-drift, high-CMRR front-end amplifier rejecting EMI from adjacent power converters. Use Value: Delivers 120 dB CMRR and 3 µV VIO to resolve 0.01°C temperature increments without post-processing correction. |
| Precision Transducer Signal Chain | Low-Power Sensor Node Front-End |
Use Scenario: Signal conditioning for MEMS pressure sensors in medical infusion pumps requiring FDA-grade accuracy. IC Role / Device Role / Timing Role: Primary gain stage with rail-to-rail input enabling direct connection to unbuffered sensor outputs. Use Value: 500 pA max input bias current prevents loading of high-Z piezoresistive elements, preserving full-scale sensitivity. | Use Scenario: Battery-powered environmental sensor module measuring humidity and CO₂ with 10-year calibration stability. IC Role / Device Role / Timing Role: Ultra-low-drift amplifier in ratiometric ADC driver stage operating from 3.3 V single supply. Use Value: 0.003 µV/°C drift and ±1.9 V min supply enable >15-year zero-point stability without firmware compensation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision chopper-stabilized op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2057HMS8#PBF | 0.5 µV max VIO, 0.005 µV/°C drift, 1.9 MHz GBW, SO-8 package | Higher bandwidth but lower temperature rating (−40°C to 125°C); no CLAMP pin | Select for higher-speed precision apps where military temp range is not required and PCB space is constrained. |
| OPA2189IDR | 0.005 µV/°C drift, 2.5 MHz GBW, rail-to-rail output, SO-8 | Lower VIO (0.05 µV typ) but only rated to −40°C to 125°C; no chopper control pins | Choose when sub-100 nV offset and faster settling are prioritized over extended cold-temperature operation. |
Compared with LTC2057HMS8#PBF and OPA2189IDR, the TLC2652M-8D uniquely combines full military temperature qualification (−55°C to 125°C), dedicated CLAMP and C RETURN pins for external timing control, and proven long-term stability in high-reliability analog signal chains-making it irreplaceable in defense and aerospace DC precision applications.
Availability
TLC2652M-8D is available at Aetrix Electronics and suitable for aerospace structural monitoring, turbine engine controls, medical infusion pump signal conditioning, and downhole instrumentation requiring stable component supply across extreme thermal cycles.
Supply support for TLC2652M-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 specializing in analog and embedded processing technologies, with decades of heritage in high-reliability op-amp design.
The TLC2652 family was engineered specifically for ultra-stable DC amplification in mission-critical systems-targeting aerospace, defense, and industrial instrumentation where offset drift and long-term calibration stability are non-negotiable.
FAQ
What is the maximum input offset voltage specification for TLC2652M-8D over its full operating temperature range?
The TLC2652M-8D has a maximum input offset voltage of 3 µV over its full military temperature range of −55°C to 125°C, as specified in the Electrical Characteristics table for M-suffix devices. This value is confirmed in the "AVAILABLE OPTIONS" section and Table on page 9 of the SLOS019E datasheet, distinguishing it from commercial (C) and industrial (I) variants with higher VIO limits.
Does TLC2652M-8D support single-supply operation, and what is the minimum supply voltage?
Yes, the TLC2652M-8D supports true single-supply operation with a common-mode input voltage range that includes the negative rail (VDD−). The minimum total supply voltage is ±1.9 V, meaning it can operate from a 1.9 V single-ended supply with VDD− = GND and VDD+ = 1.9 V, as stated in the Recommended Operating Conditions table on page 4 of the datasheet.
What external components are required for basic operation of TLC2652M-8D?
The TLC2652M-8D requires two external capacitors: one connected between CXA and C RETURN, and another between CXB and C RETURN (CXB is NC on the 8-pin DIP package, so only CXA–C RETURN is used). These stabilize the internal chopper circuit; values are typically 0.1 µF ceramic, as implied by the functional block diagram and application notes in the datasheet.
Is the CLAMP pin on TLC2652M-8D internally connected or does it require external circuitry?
The CLAMP pin on TLC2652M-8D is an active output clamp control terminal-not internally connected-and must be wired to an external clamp circuit (e.g., diode to supply rails) to reduce overload recovery time. The datasheet specifies 25 µA sink capability and confirms its use for fast recovery in Figure 7 and the Electrical Characteristics table on page 9.
How does the chopper-stabilization architecture of TLC2652M-8D improve low-frequency noise performance?
The TLC2652M-8D's chopper-stabilization architecture continuously nulls input offset and suppresses 1/f noise by modulating the input signal at 450 Hz, shifting low-frequency errors to higher frequencies where they are filtered by system bandwidth limits. This yields 0.8 µV peak-to-peak input noise (0–1 Hz) and 2.8 µV (0–10 Hz), as measured in the Operating Characteristics table on page 6, directly enabling stable µV-level DC measurements.
TLC2652M-8D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- -55°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2652M-8D FAQ
1.How can I place an order for TLC2652M-8D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652M-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 TLC2652M-8D reliable?
The price and inventory of TLC2652M-8D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652M-8D is usually 5 days.
3.What payment methods are accepted for TLC2652M-8D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652M-8D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652M-8D?
TLC2652M-8D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652M-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 TLC2652M-8D?
For technical support, including TLC2652M-8D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652M-8D requirements.
6.How does Aetrix verify that TLC2652M-8D is sourced from the original manufacturer or authorized distributors?
All TLC2652M-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 TLC2652M-8D meets industry standards.
7.What is the process for return or replacement of TLC2652M-8D?
All TLC2652M-8D units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652M-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 TLC2652M-8D part is unused and in its original packaging.
Return procedure for TLC2652M-8D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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