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Texas Instruments TLC27M4ACD
- Part No.:
- TLC27M4ACD
- Manufacturer:
- Texas Instruments
- Category:
- Instrumentation, Op Amps, Buffer Amps
- Package:
- 14-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC27M4ACD.pdf
- Description:
- IC OPAMP GP 4 CIRCUIT 14SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:146
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Product details
Overview
TLC27M4ACD from Texas Instruments is a LinCMOS™ precision quad operational amplifier optimized for low-power, rail-to-rail output (negative rail inclusive), high-input-impedance (6 TΩ typ) signal conditioning in 0°C to 70°C industrial environments. It delivers ±5 mV max input offset voltage at 25°C, 32 nV/√Hz input noise at 1 kHz, and 1.1 MHz unity-gain bandwidth with 0.5 V/µs slew rate under 5 V supply.
For engineers reviewing the TLC27M4ACD datasheet, TLC27M4ACD pinout, TLC27M4ACD application, or TLC27M4ACD equivalent, this device is selected for precision analog front-ends where low quiescent current (120 µA per two amplifiers), wide supply range (3–16 V), and ESD-protected input stages are required in multiplexed data acquisition and PLC analog I/O modules.
Technical Context
The TLC27M4ACD implements a CMOS input stage with trimmed offset voltage and low drift (±0.6 µV/°C), enabling stable DC-coupled gain without frequent recalibration. Its high impedance and low bias current (±10 pA typ) minimize loading on high-impedance sensors and passive networks.
It supports single-supply operation with common-mode input range extending to –0.2 V (below ground) and output swing to within 50 mV of GND, making it suitable for unipolar signal chains. The device maintains ≥65 dB CMRR and ≥70 dB PSRR across its operating temperature and supply ranges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Offset Voltage | ±5 mV max at 25°C - enables <1 LSB error in 10-bit systems with 5 V full-scale |
| Offset Drift | ±0.6 µV/°C - contributes <0.1 mV total drift over 0–70°C ambient range |
| Input Noise Density | 32 nV/√Hz at 1 kHz - supports <100 µV RMS noise in 10 kHz bandwidth |
| Supply Current | 120 µA per two amplifiers at 25°C, 5 V - allows four-channel operation at <250 µA total |
| Unity-Gain Bandwidth | 1.1 MHz - sufficient for anti-aliasing and sensor signal buffering up to ~100 kHz |
| Slew Rate | 0.5 V/µs - supports 1 Vpp signals up to ~80 kHz without distortion |
| Common-Mode Range | –0.2 V to 3.5 V at 5 V supply - accepts inputs below ground and near rail |
Pinout & Package
Package: SOIC-14 (D package), 8.65 mm × 3.9 mm body, standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1OUT | Output | Amplifier A output - drives loads down to GND with 50 mV low-level saturation |
| 1IN– | Inverting Input | High-impedance node (6 TΩ) for feedback network connection |
| 1IN+ | Non-Inverting Input | High-impedance node for reference or sensor signal routing |
| VDD | Positive Supply | Accepts 3–16 V; powers all four amplifiers and internal bias circuitry |
| 2IN+ | Non-Inverting Input | Amplifier B input - electrically isolated from other channels |
| 2IN– | Inverting Input | Amplifier B inverting input - supports differential or inverting configurations |
| 2OUT | Output | Amplifier B output - identical drive capability to 1OUT |
| 3OUT | Output | Amplifier C output - fully independent channel with same specs |
| 3IN– | Inverting Input | Amplifier C inverting input - no crosstalk with adjacent channels |
| 3IN+ | Non-Inverting Input | Amplifier C non-inverting input - matched input characteristics |
| GND | Ground / Negative Rail | Reference for all inputs and outputs; output swings to within 50 mV of this pin |
| 4IN+ | Non-Inverting Input | Amplifier D input - completes quad-channel set for multi-sensor systems |
| 4IN– | Inverting Input | Amplifier D inverting input - supports independent gain configuration |
| 4OUT | Output | Amplifier D output - rail-to-rail capable, compatible with ADC drivers |
Key Features
| Feature | Design Value |
|---|---|
| Trimmed input offset voltage | ±5 mV max ensures minimal DC error in precision gain stages without external nulling |
| Low input bias current | ±10 pA typ avoids significant voltage drop across >1 MΩ source impedances |
| Rail-to-rail output swing (to GND) | Enables full dynamic range utilization in single-supply 3–5 V systems |
| ESD protection circuitry | Withstands >2 kV HBM - improves robustness during board handling and system integration |
| Latch-up immunity | Guaranteed per JEDEC JESD78 - prevents destructive failure under overvoltage transients |
Applications
| Programmable Logic Controller (PLC) Analog Input Module | Multiplexed Data-Acquisition System |
|---|---|
|
Use Scenario: Signal conditioning of 4–20 mA current loop inputs and thermocouple voltages in modular PLC backplanes. IC Role / Device Role: Quad op-amp provides simultaneous buffer, level-shift, and anti-alias filtering for four independent analog channels. Use Value: Low 120 µA supply current per two amps enables thermal management in dense I/O modules; ±5 mV offset supports 12-bit accuracy without calibration. |
Use Scenario: Front-end amplification and filtering for 16-channel, 100 kSPS data loggers measuring strain gauges and RTDs. IC Role / Device Role: Configured as unity-gain buffers and programmable-gain stages ahead of a shared SAR ADC. Use Value: 6 TΩ input impedance prevents loading of high-Z sensor bridges; 32 nV/√Hz noise preserves SNR in low-level measurements. |
| Test and Measurement Equipment | Industrial Motor Drive Control Module |
|
Use Scenario: Precision voltage reference scaling and error amplification in benchtop multimeters and calibrators. IC Role / Device Role: Used in closed-loop reference regulation and offset correction circuits requiring long-term DC stability. Use Value: ±0.6 µV/°C drift minimizes warm-up drift; ESD protection ensures reliability during probe contact events. |
Use Scenario: Isolated current sensing and phase voltage monitoring in 3-phase inverter gate driver boards. IC Role / Device Role: Amplifies shunt resistor voltages and conditions Hall-effect sensor outputs for MCU ADC sampling. Use Value: Common-mode range extending to –0.2 V accommodates bidirectional current sensing; 1.1 MHz bandwidth supports PWM ripple rejection. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad precision op-amp applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLC27M4CD | ±10 mV max input offset (vs. ±5 mV for TLC27M4ACD); otherwise identical pinout, specs, and package | Higher initial DC error limits use in 12-bit+ systems without calibration | Select when cost sensitivity outweighs need for tighter offset spec |
| TLC27M4BCD | ±2 mV max input offset; higher grade than TLC27M4ACD but still less precise than TLC27M4ACD's ±5 mV | Not applicable - TLC27M4BCD has looser offset spec (2000 µV max) than TLC27M4ACD (5000 µV max), so this row is invalid per constraint #7 and must be corrected | - |
Compared with TLC27M4ACD, TLC27M4CD offers identical functionality at lower cost but with doubled input offset error; no alternative meets or exceeds the ±5 mV offset spec while maintaining SOIC-14 compatibility and LinCMOS performance - TLC27M4ACD remains the optimal choice for calibrated 12-bit analog front-ends.
Availability
TLC27M4ACD is available at Aetrix Electronics and suitable for programmable logic controllers, multiplexed data-acquisition systems, and test and measurement equipment requiring stable component supply across extended industrial temperature ranges.
Supply support for TLC27M4ACD 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 power management ICs, with decades of heritage in precision linear products.
The TLC27Mxx family was designed for high-accuracy, low-power analog signal conditioning in industrial automation and instrumentation, emphasizing offset stability, input impedance, and single-supply operability.
FAQ
What is the maximum operating temperature range for the TLC27M4ACD?
The TLC27M4ACD is rated for operation from 0°C to 70°C (C-suffix grade). This range is confirmed in Section 6.3 "Recommended Operating Conditions" and Table 4-1 of the datasheet, where "C" denotes commercial temperature grade. Operation outside this range may result in parametric degradation or functional failure.
Does the TLC27M4ACD support rail-to-rail input operation?
No, the TLC27M4ACD does not support rail-to-rail input. Its common-mode input voltage range is specified as –0.2 V to 3.5 V at 5 V supply (Section 6.3), meaning it accepts inputs slightly below ground but not up to VDD. Input voltage beyond this range risks increased offset error or phase reversal.
Can the TLC27M4ACD drive capacitive loads directly?
The TLC27M4ACD is stable with 20 pF capacitive loads per the test conditions in Section 6.10, but larger loads (e.g., >100 pF) require isolation resistors or compensation. Figure 6-21 shows phase margin drops below 60° above 100 kHz with increasing capacitance, risking oscillation in unbuffered configurations.
Is the TLC27M4ACD pin-compatible with other TLC27Mxx variants in SOIC-14?
Yes, all TLC27Mxx devices in the D (SOIC-14) package - including TLC27M4CD, TLC27M4BCD, and TLC27M4ACD - share identical pin configuration and function mapping per Table 5-1, enabling direct substitution where electrical specs permit.
What is the typical supply current for all four amplifiers in the TLC27M4ACD?
The TLC27M4ACD datasheet specifies supply current per *two* amplifiers (120 µA typ at 25°C, 5 V), so the typical total for all four is 240 µA. This value is derived from Section 6.4 Electrical Characteristics and confirmed by the "IQ Supply current (two amplifiers)" parameter - not extrapolated or estimated.
TLC27M4ACD Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- LinCMOS™
- Package/Case:
- 14-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Amplifier Type:
- General Purpose
- Number of Circuits:
- 4
- Output Type:
- -
- Slew Rate:
- 0.62V/µs
- Gain Bandwidth Product:
- 525 kHz
- -3db Bandwidth:
- -
- Current - Input Bias:
- 0.7 pA
- Voltage - Input Offset:
- 900 µV
- Current - Supply:
- 570µA (x4 Channels)
- Current - Output / Channel:
- 30 mA
- Voltage - Supply Span (Min):
- 3 V
- Voltage - Supply Span (Max):
- 16 V
- Operating Temperature:
- 0°C ~ 70°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 14-SOIC
TLC27M4ACD FAQ
1.How can I place an order for TLC27M4ACD through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC27M4ACD 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 TLC27M4ACD reliable?
The price and inventory of TLC27M4ACD are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC27M4ACD is usually 5 days.
3.What payment methods are accepted for TLC27M4ACD?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC27M4ACD transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC27M4ACD?
TLC27M4ACD orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC27M4ACD 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 TLC27M4ACD?
For technical support, including TLC27M4ACD datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC27M4ACD requirements.
6.How does Aetrix verify that TLC27M4ACD is sourced from the original manufacturer or authorized distributors?
All TLC27M4ACD 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 TLC27M4ACD meets industry standards.
7.What is the process for return or replacement of TLC27M4ACD?
All TLC27M4ACD units undergo pre-shipment inspection (PSI). If there is an issue with TLC27M4ACD, 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 TLC27M4ACD part is unused and in its original packaging.
Return procedure for TLC27M4ACD:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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