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Texas Instruments TLC2652AC-8D
- Part No.:
- TLC2652AC-8D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2652AC-8D.pdf
- Description:
- IC OPAMP ZERO-DRIFT 1 CIRC 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:173
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Product details
Overview
TLC2652AC-8D from Texas Instruments is a chopper-stabilized precision operational amplifier in an 8-pin SOIC (D008) package, delivering 1 µV max input offset voltage, 0.003 µV/°C typical offset drift, and 135 dB min open-loop gain. It operates from ±1.9 V to ±8 V supplies, supports single-supply operation with rail-to-rail common-mode input down to VDD−, and targets low-level transducer signal conditioning such as thermocouple and strain gauge amplification.
For engineers reviewing the TLC2652AC-8D datasheet, TLC2652AC-8D pinout, TLC2652AC-8D application, or TLC2652AC-8D equivalent, key selection criteria include ultra-low dc offset stability over temperature, internal 450 Hz chopping frequency, output clamp capability, CMOS input stage impedance (>1012 Ω), and compatibility with external clock control in D014/D008 packages.
Technical Context
The TLC2652AC-8D uses Texas Instruments' Advanced LinCMOS process with integrated chopper-stabilization circuitry that continuously nulls input offset voltage in real time-compensating for drift due to temperature, time, common-mode voltage, and supply variation. Its architecture includes dedicated CLAMP and C RETURN terminals for fast overload recovery and stable external capacitor interfacing without noise degradation.
Unlike standard op-amps, it features accessible internal clock nodes (CLK IN/CLK OUT/INT/EXT) on D008 and D014 packages, enabling user-defined clock synchronization or frequency adjustment. The device maintains full functionality with TTL/CMOS-level clock inputs in single-supply configurations without level shifting.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 1 µV max at 25°C - enables sub-microvolt dc measurement accuracy in high-gain sensor front-ends |
| Offset Drift vs Temp | 0.003 µV/°C typical - ensures <±0.2 µV total drift across 0°C to 70°C operating range |
| Open-Loop Gain (AVD) | 135 dB min - supports >5 million closed-loop gain stability for precision instrumentation |
| CMRR / PSRR | 120 dB min CMRR, 110 dB min kSVR - rejects power supply and common-mode interference in noisy industrial environments |
| Supply Range | ±1.9 V to ±8 V - allows operation from low-voltage battery systems up to industrial ±5 V rails |
| Chopping Frequency | 450 Hz - suppresses 1/f noise while maintaining usable bandwidth for slow-varying sensor signals |
| Input Bias Current | 60 pA max - preserves signal integrity when driving high-impedance sources like piezoresistive sensors |
Pinout & Package
Package: 8-pin SOIC (D008), surface-mount, tape-and-reel compatible (add R suffix: TLC2652AC-8DR). Dimensions per JEDEC MS-012, body width 3.9 mm, thermal resistance θJA = 173°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN−) | Inverting Input | High-impedance CMOS node; accepts common-mode voltage down to VDD− |
| 2 (IN+) | Non-inverting Input | High-impedance CMOS node; supports rail-to-rail input swing |
| 3 (VDD−) | Negative Supply Rail | Reference for internal chopper clock and bias networks; must be connected |
| 4 (CLAMP) | Output Clamp Control | Active-low clamp terminal; reduces overload recovery time when pulled low |
| 5 (CXB) | Chopper Capacitor B | Connects to external 0.1 µF capacitor; stabilizes chopper reference node |
| 6 (CXA) | Chopper Capacitor A | Connects to external 0.1 µF capacitor; completes chopper stabilization loop |
| 7 (OUT) | Amplifier Output | Capable of ±50 mA surge current; includes internal ESD protection to 2000 V |
| 8 (VDD+) | Positive Supply Rail | Power for main amplifier and chopper control circuitry; decoupling recommended |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-Stabilized Architecture | Real-time offset nulling eliminates drift-induced errors in long-duration measurements |
| Rail-to-Rail Common-Mode Input | Includes VDD−, enabling true single-supply operation with ground-referenced sensors |
| External Clock Interface | CLK IN/CLK OUT/INT/EXT pins allow synchronization to system clock or custom chopping frequency |
| Output Clamp Terminal | Dedicated CLAMP pin reduces recovery time after saturation, critical for multiplexed sensor systems |
| Robust ESD Protection | Withstands 2000 V HBM per MIL-STD-883C Method 3015.2, reducing handling sensitivity |
Applications
| Thermocouple Amplification | Strain Gauge Signal Conditioning |
|---|---|
|
Use Scenario: Amplifying microvolt-level Seebeck voltages from Type K thermocouples in HVAC and industrial process control. IC Role / Device Role / Timing Role: Precision dc-coupled front-end amplifier with chopper stabilization to reject thermal EMF drift and 50/60 Hz pickup. Use Value: 1 µV max offset and 0.003 µV/°C drift enable ±0.1°C measurement accuracy over 0°C–70°C ambient range. |
Use Scenario: Conditioning Wheatstone bridge outputs from metal foil strain gauges in load cells and pressure transducers. IC Role / Device Role / Timing Role: Low-noise, high-input-impedance instrumentation amplifier core with rail-to-rail input for unbalanced bridge operation. Use Value: 60 pA max input bias current prevents bridge imbalance error; 135 dB AVD ensures stable gain accuracy at G = 1000. |
| Medical Sensor Front-End | Low-Power Data Acquisition |
|
Use Scenario: Biopotential signal amplification (e.g., ECG lead-off detection) in portable diagnostic devices. IC Role / Device Role / Timing Role: Ultra-low-offset, low-drift amplifier for dc-coupled analog front-end with minimal calibration overhead. Use Value: Sub-microvolt offset stability eliminates need for frequent auto-zero cycles, extending battery life in wearable systems. |
Use Scenario: High-resolution ADC driver in battery-powered environmental monitoring nodes (temperature, humidity, gas). IC Role / Device Role / Timing Role: Low-power precision buffer with 1.5 mA supply current and ±1.9 V minimum supply support. Use Value: Enables direct interface to 16-bit SAR ADCs with no gain error drift, preserving ENOB across temperature. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2057CS8#TRPBF | Zero-drift architecture, 0.5 µV max offset, 0.005 µV/°C drift, 1.8 MHz GBW, SO-8 package | Higher bandwidth and lower drift, but requires dual supply and lacks CLAMP pin | Preferred for higher-speed precision applications where overload recovery is managed externally |
| OPA2189IDR | Zero-drift op-amp, 0.005 µV/°C max drift, 10 MHz GBW, rail-to-rail output, SO-8 | Superior speed and output drive, but no dedicated clamp or external clock interface | Best for multi-channel DAQ systems needing fast settling and low distortion, not chopper-synchronized designs |
Compared with TLC2652AC-8D, LTC2057CS8#TRPBF offers tighter drift specs but no output clamp; OPA2189IDR delivers 5× higher bandwidth but omits chopper clock control-making TLC2652AC-8D uniquely suited for synchronized, ultra-stable low-frequency sensor interfaces requiring active overload management.
Availability
TLC2652AC-8D is available at Aetrix Electronics and suitable for thermocouple amplification, strain gauge signal conditioning, and medical sensor front-end designs requiring stable component supply across extended production lifecycles.
Supply support for TLC2652AC-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, embedded processing, and connectivity technologies, with decades of heritage in precision analog design.
The TLC2652 family was engineered for ultra-high dc precision in demanding sensor signal chains-specifically targeting applications where offset drift, long-term stability, and rail-to-rail input performance outweigh raw bandwidth requirements.
FAQ
What is the maximum input offset voltage specification for the TLC2652AC-8D?
The TLC2652AC-8D has a maximum input offset voltage of 1 µV at 25°C, tested across the 0°C to 70°C operating range. This value is guaranteed by production testing and reflects the "AC" grade's enhanced precision over the base "C" version (3 µV max). The device achieves this via continuous chopper-stabilization, making TLC2652AC-8D suitable for applications requiring sub-microvolt baseline accuracy.
Does the TLC2652AC-8D support single-supply operation?
Yes, the TLC2652AC-8D supports true single-supply operation because its common-mode input voltage range includes the negative rail (VDD−). When powered from +5 V and ground, IN+ and IN− accept signals from 0 V up to +3.1 V. This rail-to-rail input capability eliminates level-shifting requirements for ground-referenced sensors, simplifying design in battery-powered and industrial systems using TLC2652AC-8D.
What external components are required for basic operation of the TLC2652AC-8D?
The TLC2652AC-8D requires two external 0.1 µF capacitors connected between pins CXA and CXB and VDD− to stabilize the internal chopper reference. No additional compensation or feedback components are needed for unity-gain stable operation. The CLAMP pin may be left open if fast overload recovery is not required. These minimal external parts make TLC2652AC-8D straightforward to integrate into space-constrained layouts.
Can the internal chopping frequency of the TLC2652AC-8D be modified?
Yes-the TLC2652AC-8D provides CLK IN, CLK OUT, and INT/EXT pins on its D008 package, allowing users to override the default 450 Hz internal clock with an external source. When INT/EXT is tied high, the internal oscillator runs; when pulled low, the device synchronizes to an external TTL/CMOS clock applied to CLK IN. This feature enables deterministic noise shaping and system-level clock domain alignment in designs using TLC2652AC-8D.
Is the TLC2652AC-8D pin-compatible with other variants in the TLC2652 family?
The TLC2652AC-8D shares identical pinout and footprint with TLC2652C-8D, TLC2652I-8D, and TLC2652M-8D in the D008 package. All variants use the same 8-pin SOIC layout with matching IN+, IN−, VDD+, VDD−, OUT, CLAMP, CXA, and CXB assignments. However, temperature range, offset specs, and long-term drift differ-so while PCB layout is reusable, system-level validation is required when substituting grades. This consistency simplifies design reuse across TLC2652AC-8D and related parts.
TLC2652AC-8D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2652AC-8D FAQ
1.How can I place an order for TLC2652AC-8D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2652AC-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 TLC2652AC-8D reliable?
The price and inventory of TLC2652AC-8D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2652AC-8D is usually 5 days.
3.What payment methods are accepted for TLC2652AC-8D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2652AC-8D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2652AC-8D?
TLC2652AC-8D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2652AC-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 TLC2652AC-8D?
For technical support, including TLC2652AC-8D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2652AC-8D requirements.
6.How does Aetrix verify that TLC2652AC-8D is sourced from the original manufacturer or authorized distributors?
All TLC2652AC-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 TLC2652AC-8D meets industry standards.
7.What is the process for return or replacement of TLC2652AC-8D?
All TLC2652AC-8D units undergo pre-shipment inspection (PSI). If there is an issue with TLC2652AC-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 TLC2652AC-8D part is unused and in its original packaging.
Return procedure for TLC2652AC-8D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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