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Texas Instruments TLC3541IDG4
- Part No.:
- TLC3541IDG4
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC3541IDG4.pdf
- Description:
- IC ADC 14BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,542
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Product details
Overview
TLC3541IDG4 from Texas Instruments is a 14-bit, single-channel unipolar successive-approximation analog-to-digital converter (SAR ADC) operating from a single 5-V supply. It delivers 200-KSPS sampling rate, ±1 LSB INL/DNL accuracy, and 81.5 dB SINAD at 15 kHz input, optimized for precision data acquisition in industrial process control and motor control systems.
For engineers reviewing the TLC3541IDG4 datasheet, TLC3541IDG4 pinout, TLC3541IDG4 application, or TLC3541IDG4 equivalent, key selection considerations include its SPI/DSP-compatible serial interface with FS support, rail-to-rail 500 kHz analog input bandwidth, auto-power-down mode (5 µA), and SOIC-8 package compatibility with TI's 12-/14-/16-bit pin-compatible ADC family.
Technical Context
The TLC3541IDG4 implements a charge-redistribution SAR architecture with an integrated oscillator-based conversion clock (max 2.67 µs conversion time). It supports three control modes: SPI-style CS-only operation, DSP-style FS-triggered mode (with CS grounded), and dual CS/FS synchronized timing - all using MSB-first serial output on SDO with 17-clock frame length.
Its analog front-end features rail-to-rail unipolar input (0 V to VDD), 11–14 pF input capacitance, and 100 MΩ input impedance when idle. Digital interface compliance includes 15 MHz SCLK max, 97 ps clock jitter tolerance, and strict setup/hold timing for CS, FS, and SCLK edges per TI SLAS345.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit unipolar straight-binary output (0000h to 3FFFh) |
| Sampling Rate | 200 KSPS maximum - enables real-time capture of signals up to 100 kHz Nyquist frequency |
| INL / DNL | ±1 LSB max - ensures monotonicity and <0.006% full-scale linearity error for calibration-sensitive applications |
| SINAD / SFDR | 81.5 dB / 95 dB at 15 kHz - supports high-fidelity signal reconstruction in ATE and measurement equipment |
| Supply Current | 3.5 mA active, 5 µA auto-power-down - reduces system power by >99% between conversions |
| Analog Input BW | 500 kHz (−1 dB), 1 MHz (−3 dB) - accommodates fast transients without external anti-alias filtering |
| Reference Input | External VREF (4 V to VDD) - allows flexible full-scale scaling from 4.096 V standard to 5 V rails |
Pinout & Package
Package: 8-pin SOIC (D), RoHS-compliant, MSL Level-1, −40°C to +85°C operating range. Pinout validated per TI SLAS345 datasheet Figure 1 (TLC3541 D/DGK top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CS (Pin 1) | Chip Select input | Active-low enable for serial interface; falling edge initiates sampling cycle; can be tied low for FS-only DSP mode |
| REF (Pin 2) | Reference voltage input | Defines full-scale range (4 V to VDD); high-impedance input requiring stable external reference source |
| GND (Pin 3) | Analog/digital ground | Common return for internal circuitry; requires low-impedance connection to system ground plane |
| AIN (Pin 4) | Analog input channel | Unipolar rail-to-rail input (0 V to VDD); 500 kHz bandwidth supports direct sensor interfacing |
| SCLK (Pin 5) | Serial clock input | Accepts up to 15 MHz clock; rising edge clocks data out, falling edge samples data valid |
| VDD (Pin 6) | Positive supply | Single 4.5–5.5 V supply; powers analog core, digital logic, and I/O buffers |
| FS (Pin 7) | DSP frame sync input | Rising edge triggers MSB output in DSP mode; must be tied to VDD if unused or in SPI mode |
| SDO (Pin 8) | Serial data output | 3-state MSB-first output; high-impedance when CS high; data valid on falling SCLK edge |
Key Features
| Feature | Design Value |
|---|---|
| Built-in conversion clock | Eliminates external crystal or oscillator; guarantees 2.67 µs max conversion time independent of host clock |
| Optimized DSP interface | FS input enables synchronous multi-device timing on TMS320 DSP serial ports without software overhead |
| Rail-to-rail analog input | Supports full dynamic range utilization from GND to VDD, simplifying sensor signal conditioning |
| Auto-power-down mode | Reduces current to 5 µA automatically after conversion completion - ideal for battery-powered DAQ |
| PIN-compatible family | Shares SOIC-8 footprint with TLC3545 (pseudo-differential), TLC3542 (dual-channel), and 12-/16-bit variants |
Applications
| Industrial Process Control | Motor Control Feedback |
|---|---|
Use Scenario: Monitoring temperature, pressure, and flow sensors in PLC-based automation systems with 12+ bit resolution requirements. IC Role / Device Role / Timing Role: Primary high-accuracy ADC digitizing analog sensor outputs at ≤200 KSPS for closed-loop PID execution. Use Value: ±1 LSB linearity ensures consistent setpoint tracking across temperature ranges; 500 kHz input BW captures fast valve actuator transients. | Use Scenario: Sampling current and voltage feedback signals in three-phase inverter drives for field-oriented control (FOC). IC Role / Device Role / Timing Role: Synchronized sampling node interfaced to DSP via FS signal for deterministic timing alignment with PWM cycles. Use Value: 81.5 dB SINAD preserves signal integrity of motor phase currents; auto-power-down minimizes heat in compact drive modules. |
| Automated Test Equipment (ATE) | High-Precision Measurement |
Use Scenario: Embedded digitizer in benchtop multimeters and LCR meters requiring calibrated 14-bit DC/AC performance. IC Role / Device Role / Timing Role: Standalone ADC with external reference, driven by microcontroller SPI for flexible test sequence control. Use Value: 95 dB SFDR suppresses harmonic artifacts during AC parameter measurement; 15 MHz SCLK enables rapid data streaming. | Use Scenario: Data logging of strain gauge, thermocouple, or RTD outputs in portable calibration instruments. IC Role / Device Role / Timing Role: Low-power, rail-to-rail input ADC accepting buffered sensor outputs directly without gain stages. Use Value: Single 5-V supply simplifies power design; 3.5 mA active current enables >10-hour battery life in handheld units. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 12-bit resolution, 200 KSPS, SPI-only (no FS pin), 2.7–5.25 V supply | Lacks DSP frame sync; lower resolution limits dynamic range in THD-critical ATE | Select when 12-bit precision suffices and board space requires MSOP-8; not drop-in due to missing FS functionality |
| TLC3545IDG4 | Same 14-bit resolution and SOIC-8 package, but pseudo-differential input (AIN+/AIN−) instead of unipolar | Requires differential sensor sources or instrumentation amplifier front-end; better common-mode noise rejection | Choose for ground-referenced noisy environments (e.g., motor drives); pinout differs - AIN(−) replaces FS on Pin 7 |
Compared with ADS7822U and TLC3545IDG4, the TLC3541IDG4 uniquely provides unipolar single-ended input with dedicated FS synchronization - making it optimal for cost-sensitive, DSP-timed industrial DAQ where input common-mode range is well-controlled and resolution >12 bits is mandatory.
Availability
TLC3541IDG4 is available at Aetrix Electronics and suitable for industrial process control, motor control feedback, and automated test equipment requiring stable component supply over extended production lifecycles.
Supply support for TLC3541IDG4 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 precision data converter innovation.
The TLC35xx family was designed for low-power, high-speed industrial data acquisition - delivering pin-compatible 12-/14-/16-bit SAR ADCs with integrated timing and flexible DSP/microcontroller interfacing in miniature SOIC and MSOP packages.
FAQ
What is the maximum SCLK frequency supported by the TLC3541IDG4?
The TLC3541IDG4 supports serial clock frequencies up to 15 MHz, as specified in the recommended operating conditions table of TI SLAS345. This allows full 14-bit data transfer within 17 clock cycles (≤1.13 µs frame time), enabling tight timing margins in high-throughput systems. Operation above 15 MHz is not characterized and may violate setup/hold timing requirements.
Does the TLC3541IDG4 require an external oscillator or crystal?
No, the TLC3541IDG4 does not require an external oscillator or crystal. It integrates a built-in oscillator that serves as the conversion clock, guaranteeing a maximum conversion time of 2.67 µs. This eliminates BOM cost and layout complexity associated with external timing components while ensuring consistent performance across temperature and voltage variations.
How does the FS pin function in the TLC3541IDG4, and what happens if it's left unconnected?
In the TLC3541IDG4, the FS (frame sync) pin (Pin 7) provides DSP-synchronous triggering: a rising edge initiates the serial data frame and presents the MSB on SDO. If unused in SPI mode, FS must be tied to VDD per datasheet guidance; leaving it floating risks metastability and unreliable communication due to undefined logic state.
What is the analog input voltage range specification for the TLC3541IDG4?
The TLC3541IDG4 supports a rail-to-rail unipolar analog input range from 0 V to VDD (4.5 V to 5.5 V), as confirmed in the "Rail-to-Rail Analog Input With 500 kHz BW" feature and absolute maximum ratings. Input voltages outside this range - including negative inputs or exceeding VDD + 0.3 V - risk damage or invalid conversion results.
Can the TLC3541IDG4 operate from a 3.3-V supply?
No, the TLC3541IDG4 is specified only for 4.5 V to 5.5 V operation per its recommended operating conditions. Attempting 3.3-V supply violates the minimum VDD requirement and will result in improper internal biasing, failed conversions, or non-functional digital interface. For 3.3-V systems, consider TI's ADS7822 or ADS8320 families instead.
TLC3541IDG4 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- Product Status:
- Discontinued at Digi-Key
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLC3541IDG4 FAQ
1.How can I place an order for TLC3541IDG4 through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC3541IDG4 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 TLC3541IDG4 reliable?
The price and inventory of TLC3541IDG4 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC3541IDG4 is usually 5 days.
3.What payment methods are accepted for TLC3541IDG4?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC3541IDG4 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC3541IDG4?
TLC3541IDG4 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC3541IDG4 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 TLC3541IDG4?
For technical support, including TLC3541IDG4 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC3541IDG4 requirements.
6.How does Aetrix verify that TLC3541IDG4 is sourced from the original manufacturer or authorized distributors?
All TLC3541IDG4 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 TLC3541IDG4 meets industry standards.
7.What is the process for return or replacement of TLC3541IDG4?
All TLC3541IDG4 units undergo pre-shipment inspection (PSI). If there is an issue with TLC3541IDG4, 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 TLC3541IDG4 part is unused and in its original packaging.
Return procedure for TLC3541IDG4:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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