My Inquiry
My Account
Texas Instruments TLC2654AC-8D
- Part No.:
- TLC2654AC-8D
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC2654AC-8D.pdf
- Description:
- IC OPAMP GP 1 CIRCUIT 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,309
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
TLC2654AC-8D from Texas Instruments is a chopper-stabilized operational amplifier optimized for ultra-low-noise, high-precision DC applications. It delivers 10 µV max input offset voltage, 0.05 µV/°C tempco, 13 nV/√Hz noise at 1 kHz, and 10 kHz internal chopping frequency - enabling stable thermocouple amplification and strain gauge signal conditioning in single-supply systems down to ±2.3 V.
For engineers reviewing the TLC2654AC-8D datasheet, TLC2654AC-8D pinout, TLC2654AC-8D application, or TLC2654AC-8D equivalent, key selection criteria include its guaranteed 10 µV VIO max over 0°C–70°C, rail-to-rail common-mode input range (including VDD–), integrated output clamp terminal, and D-package compatibility with tape-and-reel logistics.
Technical Context
The TLC2654AC-8D uses Advanced LinCMOS™ process combined with continuous auto-zeroing chopper stabilization operating at 10 kHz typ, eliminating low-frequency drift and 1/f noise without introducing clock feedthrough below 10 kHz. Its architecture includes dual chopper modulation paths (CXA/CXB) and an independent CLAMP terminal for fast overload recovery.
It supports both internal clock operation and external clock synchronization via CLK IN/INT/EXT pins (though those are absent in the 8-pin D package), and features CMOS inputs with 50 pA typical bias current, enabling high-impedance sensor interfacing without degradation from external capacitors on VDD–.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | 10 µV max over 0°C to 70°C - ensures minimal DC error in precision sensor front-ends without calibration. |
| Offset Tempco | 0.05 µV/°C max - enables stable µV-level measurements across industrial temperature ranges. |
| Input Noise Density | 13 nV/√Hz at 1 kHz - supports clean amplification of low-amplitude, subsonic signals (e.g., geophone, piezoresistive). |
| Chopping Frequency | 10 kHz typ - suppresses 1/f noise up to audio band while avoiding aliasing below 5 kHz. |
| Common-Mode Range | Includes VDD– - allows true single-supply operation with ground-referenced sensors (e.g., bridge transducers). |
| Supply Voltage | ±2.3 V to ±8 V - compatible with low-voltage battery-powered instrumentation and legacy ±5 V systems. |
| Output Clamp Terminal | Dedicated CLAMP pin - reduces recovery time after saturation by actively limiting output swing during overload. |
Pinout & Package
Package: 8-pin SOIC (D package), surface-mount, tape-and-reel compatible (R suffix available).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CXA) | Chopper capacitor A | Connects to external 0.1 µF capacitor for internal chopping reference; required for operation. |
| 2 (IN–) | Inverting input | High-impedance CMOS node; accepts differential or single-ended signals referenced to VDD–. |
| 3 (IN+) | Non-inverting input | High-impedance CMOS node; supports rail-to-rail common-mode input including negative rail. |
| 4 (VDD–) | Negative supply | Reference for all internal circuitry; common-mode range extends to this rail. |
| 5 (CXB) | Chopper capacitor B | Second external capacitor node (0.1 µF); completes chopper stabilization loop with CXA. |
| 6 (VDD+) | Positive supply | Accepts up to +8 V; supplies analog core and output stage. |
| 7 (OUT) | Amplifier output | Capable of ±4.7 V swing into 10 kΩ; includes internal short-circuit protection. |
| 8 (CLAMP) | Output clamp control | External connection point to reduce recovery time after output saturation; sinks 25 µA when active. |
Key Features
| Feature | Design Value |
|---|---|
| Chopper-stabilized architecture | Continuous nulling of input offset voltage vs. temperature, time, and supply variation - eliminates manual trimming. |
| Rail-to-rail common-mode input | Operates with inputs at VDD– - enables direct interface to grounded sensors without level-shifting circuitry. |
| Dedicated CLAMP terminal | Reduces overload recovery time by >50% vs. standard op-amps - critical for pulse-based sensor systems. |
| Noise immunity with external caps | No degradation in noise performance when capacitors connect to VDD– - simplifies layout in noisy environments. |
| ESD protection | 2000 V HBM rating per MIL-STD-883C Method 3015 - improves robustness in handling and assembly. |
Applications
| Thermocouple Amplifier | Strain Gauge Signal Chain |
|---|---|
Use Scenario: Amplifying µV-level Seebeck voltages from Type-K thermocouples in HVAC controllers. IC Role / Device Role / Timing Role: Primary DC-coupled gain stage with ultra-low offset and drift to preserve absolute temperature accuracy. Use Value: 10 µV max VIO and 0.05 µV/°C tempco enable ±0.1°C measurement stability over 0°C–70°C without recalibration. | Use Scenario: Conditioning mV outputs from full-bridge load cells in industrial weighing systems. IC Role / Device Role / Timing Role: Instrumentation amplifier front-end with rail-to-rail input to accommodate bridge excitation referenced to ground. Use Value: Common-mode input range including VDD– allows direct connection to ground-referenced bridges, reducing component count and error sources. |
| Low-Frequency Data Acquisition | Medical Sensor Interface |
Use Scenario: Front-end for EEG or ECG analog acquisition in portable diagnostic devices. IC Role / Device Role / Timing Role: First-stage amplifier rejecting 1/f noise and drift in sub-10 Hz biopotential signals. Use Value: 10 kHz chopping frequency eliminates intermodulation error below 5 kHz and provides 0.5 µVPP noise (0–1 Hz), preserving signal fidelity. | Use Scenario: Signal conditioning for implantable pressure sensors requiring long-term DC stability. IC Role / Device Role / Timing Role: Precision buffer and gain stage where offset drift must remain <1 µV/month over lifetime. Use Value: 0.003 µV/month typical long-term drift (25°C) ensures calibration intervals exceed 12 months in chronic monitoring applications. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar chopper-stabilized op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC2652ACD | 450 Hz chopping frequency, higher 1/f noise corner, lower bandwidth (1.1 MHz GBW), no CLAMP pin. | Better suited for ultra-low-frequency (<1 Hz) applications where clock feedthrough is unacceptable; lacks fast-recovery clamp. | Select TLC2652ACD only when sub-1 Hz noise performance dominates over speed and recovery time. |
| OPA2189IDR | Zero-drift architecture with 5.2 nV/√Hz noise at 1 kHz, 2 MHz GBW, no external capacitor requirement, but no CLAMP pin. | Higher bandwidth and lower noise, but lacks dedicated clamp terminal and requires no external caps - trade-off between simplicity and overload recovery. | Choose OPA2189IDR for new designs prioritizing integration and wideband precision; retain TLC2654AC-8D when clamp-assisted recovery is mandatory. |
Compared with TLC2652ACD and OPA2189IDR, the TLC2654AC-8D uniquely combines 10 kHz chopping (enabling wider usable bandwidth), external capacitor control (for noise tailoring), and a dedicated CLAMP pin - making it optimal for industrial sensor interfaces demanding both precision and robust transient response.
Availability
TLC2654AC-8D is available at Aetrix Electronics and suitable for thermocouple amplifiers, strain gauge signal chains, low-frequency data acquisition, and medical sensor interfaces requiring stable component supply across production lifecycles.
Supply support for TLC2654AC-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 over 50 years of innovation in precision analog ICs.
The TLC2654 family was designed specifically for high-accuracy, low-drift instrumentation applications - targeting sensor signal conditioning where traditional op-amps fail due to 1/f noise and thermal drift.
FAQ
What is the maximum operating temperature range for the TLC2654AC-8D?
The TLC2654AC-8D is characterized for operation from 0°C to 70°C (C-suffix). This temperature grade is validated per the datasheet's recommended operating conditions and electrical characteristics tables for the TLC2654AC variant. Operation outside this range may result in degraded VIO, noise, or stability performance not guaranteed by Texas Instruments.
Does the TLC2654AC-8D require external capacitors, and what values are specified?
Yes, the TLC2654AC-8D requires two external 0.1 µF capacitors connected to pins CXA (Pin 1) and CXB (Pin 5). These capacitors form the chopper stabilization network and are mandatory for proper operation. The datasheet specifies ceramic or film types with X7R or better dielectric; tolerance and voltage rating are not explicitly defined, but 10 V rating is recommended for margin.
How does the CLAMP pin on the TLC2654AC-8D improve system performance?
The CLAMP pin (Pin 8) on the TLC2654AC-8D sinks 25 µA when the output saturates, actively limiting voltage excursion and reducing recovery time after overload. This feature is especially valuable in closed-loop systems (e.g., PID controllers) where rapid return from saturation prevents integral windup and maintains control stability - a capability not found in standard precision op-amps.
Is the TLC2654AC-8D pin-compatible with other packages in the TLC2654 family?
No, the TLC2654AC-8D in the 8-pin SOIC (D) package is not pin-compatible with 14-pin or 20-pin variants. The 14-pin D package includes additional pins (CLK IN, INT/EXT, C RETURN, etc.) not present on the 8-pin version. Pin mapping differs fundamentally - only the core functional pins (IN+, IN–, VDD+, VDD–, OUT, CXA, CXB, CLAMP) are retained, with no provision for external clock control in the 8-pin variant.
What is the guaranteed input offset voltage specification for the TLC2654AC-8D?
The TLC2654AC-8D guarantees a maximum input offset voltage of 10 µV at 25°C, with a full-range (0°C to 70°C) maximum of 24 µV. This specification is explicitly listed in the "Electrical Characteristics" table for the TLC2654AC variant under the VIO parameter, and distinguishes it from the standard TLC2654C (20 µV max at 25°C).
TLC2654AC-8D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 1
- Output Type:
- -
- Slew Rate:
- 3.7V/µs
- Gain Bandwidth Product:
- 1.9 MHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 50 pA
- Voltage - Input Offset:
- 4 µV
- Current - Supply:
- 1.5mA
- Current - Output / Channel:
- 50 mA
- Voltage - Supply Span (Min):
- 4.6 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
TLC2654AC-8D FAQ
1.How can I place an order for TLC2654AC-8D through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC2654AC-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 TLC2654AC-8D reliable?
The price and inventory of TLC2654AC-8D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC2654AC-8D is usually 5 days.
3.What payment methods are accepted for TLC2654AC-8D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC2654AC-8D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC2654AC-8D?
TLC2654AC-8D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC2654AC-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 TLC2654AC-8D?
For technical support, including TLC2654AC-8D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC2654AC-8D requirements.
6.How does Aetrix verify that TLC2654AC-8D is sourced from the original manufacturer or authorized distributors?
All TLC2654AC-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 TLC2654AC-8D meets industry standards.
7.What is the process for return or replacement of TLC2654AC-8D?
All TLC2654AC-8D units undergo pre-shipment inspection (PSI). If there is an issue with TLC2654AC-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 TLC2654AC-8D part is unused and in its original packaging.
Return procedure for TLC2654AC-8D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
TLC2654AC-8D Tags
-
LM358DT
STMicroelectronics
-
LM358DR
Texas Instruments
-
LM2904DR
Texas Instruments
-
LM358ADR
Texas Instruments
-
LM2904DGKR
Texas Instruments
-
LM324DR
Texas Instruments
-
MCP6006T-E/OT
Microchip Technology
-
MCP6006UT-E/OT
Microchip Technology
-
LM324PWR
Texas Instruments
-
LM2902PWR
Texas Instruments
-
LM2902DR
Texas Instruments
-
LM358P
Texas Instruments
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
