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Texas Instruments TLC3541IDR
- Part No.:
- TLC3541IDR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLC3541IDR.pdf
- Description:
- IC ADC 14BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,211
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Product details
Overview
TLC3541IDR 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 industrial measurement and motor control feedback loops.
For engineers reviewing the TLC3541IDR datasheet, TLC3541IDR pinout, TLC3541IDR application, or TLC3541IDR equivalent, key selection criteria 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 TLC3541IDR 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 hybrid CS+FS mode for multi-device TMS320 DSP interfaces.
Its analog front-end accepts unipolar inputs from GND to VDD with 11–14 pF input capacitance and 100 MΩ input impedance when idle. Digital timing requires SCLK up to 15 MHz, with strict setup/hold requirements for CS, FS, and SCLK edges to ensure valid 14-bit output data (MSB-first, 3-state SDO).
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 500 kHz full-power bandwidth signals |
| INL / DNL | ±1 LSB max - ensures monotonicity and <0.006% end-point linearity error over temperature |
| SINAD / SFDR | 81.5 dB / 95 dB at 15 kHz - supports >13.2 ENOB for high-fidelity sensor digitization |
| Supply & Power | Single 4.5–5.5 V supply; 3.5 mA active current, 5 µA auto-power-down current |
| Analog Input | Rail-to-rail (GND to VDD), 500 kHz −1 dB bandwidth, 11–14 pF input capacitance |
| Serial Interface | SPI/DSP-compatible 3-wire (CS/SCLK/SDO); optional FS pin for frame-sync DSP timing |
Pinout & Package
Package: 8-pin SOIC (D), RoHS-compliant, moisture sensitivity level 1, rated for −40°C to +85°C operation. Marking: "3541I".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS | Chip Select input | Active-low enable for serial interface; falling edge initiates sampling cycle or resets device |
| 2: REF | External reference voltage input | Defines full-scale range (typically 4.096 V); must be ≤ VDD and ≥ 4 V for specified performance |
| 3: GND | Analog/digital ground | Common return for internal circuitry; decoupling required near VDD and REF pins |
| 4: AIN | Analog input channel | Unipolar input (0 V to VDD); 500 kHz bandwidth, 11–14 pF capacitance, no differential capability |
| 5: SCLK | Serial clock input | Accepts up to 15 MHz clock; rising edge clocks data out, falling edge samples data in |
| 6: VDD | Positive supply voltage | 4.5–5.5 V single supply; powers analog core, digital logic, and reference buffer |
| 7: FS | DSP frame sync input | Low-to-high transition triggers MSB output on SDO; used only in DSP interface mode |
| 8: SDO | Serial data output | 3-state, MSB-first, 14-bit result; high-impedance when CS high or after 17th SCLK rising edge |
Key Features
| Feature | Design Value |
|---|---|
| Built-in conversion clock | Eliminates external crystal or clock generator; guarantees 2.67 µs max conversion time |
| Auto-power-down mode | Reduces supply current to 5 µA between conversions - critical for low-duty-cycle sensing |
| DSP-optimized interface | FS pin enables synchronous frame-aligned sampling with TMS320-series DSPs without software overhead |
| Rail-to-rail analog input | Supports full dynamic range utilization from GND to VDD, simplifying signal conditioning design |
| Pin-compatible family | Shares SOIC-8 and MSOP-8 footprints with TLC3545 (pseudo-differential) and 12-/16-bit variants |
Applications
| Industrial Process Monitoring | Motor Phase Current Sensing |
|---|---|
|
Use Scenario: Continuous monitoring of pressure, temperature, and flow transducer outputs in PLC I/O modules. IC Role / Device Role / Timing Role: Primary 14-bit digitizer for analog sensor signals; synchronized via CS-triggered sampling at 200 KSPS. Use Value: ±1 LSB linearity ensures accurate calibration traceability; 81.5 dB SINAD preserves signal integrity in noisy factory environments. |
Use Scenario: Real-time sampling of shunt-based current waveforms in 3-phase inverter gate drivers. IC Role / Device Role / Timing Role: High-speed unipolar ADC capturing zero-crossing and peak current events; triggered by DSP FS signal. Use Value: 500 kHz analog bandwidth captures fast current transients; auto-power-down minimizes thermal drift between PWM cycles. |
| ATE System Channel Digitizer | High-Accuracy Data Logger |
|
Use Scenario: Multi-channel voltage measurement in automated test equipment for semiconductor parametric testing. IC Role / Device Role / Timing Role: Precision ADC per channel with independent CS control; daisy-chained SDO for compact board layout. Use Value: 95 dB SFDR suppresses harmonic artifacts during swept-frequency tests; SOIC-8 footprint enables dense channel packing. |
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and light intensity over extended periods. IC Role / Device Role / Timing Role: Low-power 14-bit ADC activated on timer interrupt; enters auto-power-down between 100-ms sampling intervals. Use Value: 5 µA power-down current extends battery life; rail-to-rail input accommodates diverse sensor output ranges without gain switching. |
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 |
|---|---|---|---|
| TLC3545IDR | Same 14-bit resolution and SOIC-8 package, but pseudo-differential input (AIN+/AIN−) instead of unipolar single-ended | Required for offset-cancelling measurements (e.g., bridge sensors); not suitable for true unipolar rails-to-rails use | Select TLC3545IDR only when differential input rejection or ground noise immunity is needed |
| ADS7822U | 12-bit, 200-KSPS, SPI-only (no FS pin), 2.7–5.25 V supply, 1.25 mW typical power | Limited to lower-resolution applications; lacks DSP frame-sync capability and auto-power-down | Choose ADS7822U for cost-sensitive, low-voltage, or SPI-only microcontroller systems where 14-bit precision is unnecessary |
Compared with TLC3545IDR and ADS7822U, the TLC3541IDR uniquely balances 14-bit unipolar precision, DSP frame-sync readiness, and ultra-low 5 µA power-down - making it optimal for industrial motion control and ATE where single-ended full-scale range and timing determinism are critical.
Availability
TLC3541IDR is available at Aetrix Electronics and suitable for industrial process control, motor control feedback, and automated test equipment requiring stable component supply across long production lifecycles.
Supply support for TLC3541IDR 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 expertise in precision data converters and industrial-grade ICs.
The TLC3541IDR belongs to TI's TLC35xx family of low-power, high-performance SAR ADCs designed specifically for demanding industrial measurement, motor control, and ATE applications where accuracy, timing control, and supply robustness are essential.
FAQ
What is the maximum sampling rate supported by the TLC3541IDR?
The TLC3541IDR supports a maximum sampling rate of 200 KSPS, achieved using an internal oscillator-based conversion clock with a guaranteed maximum conversion time of 2.67 µs. This rate is maintained across the full −40°C to +85°C operating temperature range when powered from 4.5–5.5 V and driven with SCLK up to 15 MHz. The TLC3541IDR achieves this performance without external clock components.
Does the TLC3541IDR support differential input signals?
No, the TLC3541IDR does not support differential input signals. It is a single-channel unipolar ADC with one analog input pin (AIN, Pin 4) referenced to GND. For pseudo-differential operation, TI offers the pin-compatible TLC3545IDR, which provides separate AIN(+) and AIN(−) inputs. The TLC3541IDR's input range is strictly 0 V to VDD, and applying negative voltages or differential pairs violates absolute maximum ratings.
How does the FS pin function on the TLC3541IDR?
The FS (frame sync) pin (Pin 7) on the TLC3541IDR provides DSP-synchronous timing: a low-to-high transition releases the MSB onto the SDO pin and defines the start of the sampling cycle. It is used exclusively in DSP interface mode - when CS is held low or grounded - and is not functional in standard SPI mode (where FS must be tied to VDD). The TLC3541IDR's FS pin enables deterministic, jitter-free sampling aligned to DSP frame boundaries.
What is the power consumption profile of the TLC3541IDR in active and power-down states?
The TLC3541IDR draws 3.5 mA typical supply current during active conversion and reduces to 5 µA in auto-power-down mode - entered automatically after conversion completion. Wake-up occurs on the next falling edge of CS (or rising edge of FS, whichever occurs first). This rapid transition (<1 µs) allows power cycling between samples without sacrificing timing determinism, making the TLC3541IDR ideal for battery-constrained or thermally sensitive applications.
Is the TLC3541IDR pin-compatible with other devices in the TLC35xx family?
Yes, the TLC3541IDR is fully pin-compatible with the TLC3545IDR (pseudo-differential variant) and shares the same 8-pin SOIC (D) and MSOP (DGK) packages with TI's 12-bit (TLC3540) and 16-bit (TLC3548) family members. All share identical pin functions for CS, SCLK, SDO, REF, GND, VDD, AIN/AIN(+), and FS/AIN(−) - enabling hardware reuse and simplified BOM management across resolution tiers while preserving layout and firmware compatibility.
TLC3541IDR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -
TLC3541IDR FAQ
1.How can I place an order for TLC3541IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLC3541IDR 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 TLC3541IDR reliable?
The price and inventory of TLC3541IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLC3541IDR is usually 5 days.
3.What payment methods are accepted for TLC3541IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLC3541IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLC3541IDR?
TLC3541IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLC3541IDR 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 TLC3541IDR?
For technical support, including TLC3541IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLC3541IDR requirements.
6.How does Aetrix verify that TLC3541IDR is sourced from the original manufacturer or authorized distributors?
All TLC3541IDR 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 TLC3541IDR meets industry standards.
7.What is the process for return or replacement of TLC3541IDR?
All TLC3541IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLC3541IDR, 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 TLC3541IDR part is unused and in its original packaging.
Return procedure for TLC3541IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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