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Texas Instruments TLV2541IDGKR
- Part No.:
- TLV2541IDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV2541IDGKR.pdf
- Description:
- IC ADC 12BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,487
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Product details
Overview
TLV2541IDGKR from Texas Instruments is a 12-bit, successive-approximation register (SAR) analog-to-digital converter (ADC) with single-ended analog input, SPI/DSP-compatible serial interface, and autopower-down mode. It operates from 2.7 V to 5.5 V, delivers up to 200 kSPS throughput, features ±1 LSB INL/DNL, 72 dB SINAD at 20 kHz, and rail-to-rail 500 kHz analog input bandwidth. It is used in portable instrumentation and battery-powered sensor interfaces requiring low-power precision conversion.
For engineers reviewing the TLV2541IDGKR datasheet, TLV2541IDGKR pinout, TLV2541IDGKR application, or TLV2541IDGKR equivalent, key selection criteria include its 8-pin MSOP package, 2 μA autopower-down current at 2.7 V, built-in conversion clock enabling 3.5 μs conversion time, and compatibility with microcontroller SPI and TMS320 DSP frame-sync protocols.
Technical Context
The TLV2541IDGKR implements a charge redistribution SAR architecture with internal oscillator-based conversion clocking, eliminating external timing components. Its control logic supports three interface modes: CS-only (SPI), FS-only (DSP frame sync), or combined CS/FS - only the TLV2541 variant supports all three.
It uses a single analog input channel (AIN), accepts external reference voltage (VREF) from 2 V to VDD, and provides unipolar straight-binary output (000h = GND, FFFh = VREF − 1 LSB). Sampling occurs over 12 SCLK cycles; conversion completes in 3.5 μs using a dedicated 4 MHz internal oscillator.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR ADC: delivers 4096 discrete digital codes for precise analog signal digitization. |
| Max Throughput | 200 kSPS at VDD = 4.5–5.5 V with CS/FS control: enables high-speed sampling in real-time monitoring systems. |
| INL / DNL | ±1 LSB max: ensures monotonicity and minimizes code missing or gain/offset distortion in measurement chains. |
| SINAD | 72 dB at fi = 20 kHz, VDD = VREF = 5.5 V: supports >11.8 ENOB for clean signal acquisition in noise-sensitive applications. |
| Supply Range | 2.7 V to 5.5 V single supply: simplifies power design in mixed-voltage embedded systems and battery-operated devices. |
| Autopower-Down Current | 2 μA at 2.7 V: reduces idle power by >99% versus active mode (0.95 mA), critical for energy-constrained IoT nodes. |
| Analog Input BW | 500 kHz (−1 dB): supports accurate digitization of baseband sensor outputs without external anti-alias filtering. |
Pinout & Package
TLV2541IDGKR is housed in an 8-pin MSOP (DGK) package - thermally enhanced, surface-mount, 3.0 mm × 3.0 mm footprint with 0.65 mm lead pitch.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1 (CS) | Chip Select Input | Active-low enable: initiates conversion cycle and releases SDO from high-impedance state; supports SPI and DSP frame-sync modes. |
| 2 (VREF) | External Reference Input | Defines full-scale range (0 V to VREF); accepts 2 V to VDD; high-impedance when CS = 1, ~25 kΩ when CS = 0. |
| 3 (GND) | Analog/Digital Ground | Common return for internal circuitry; requires low-inductance connection to system ground plane for noise immunity. |
| 4 (AIN) | Analog Input Channel | Single-ended input: rail-to-rail capable (0 V to VDD), 500 kHz bandwidth, 45 pF input capacitance. |
| 5 (SDO) | Serial Data Output | 3-state MSB-first output: presents 12-bit result + 4 don't-care bits; valid on falling SCLK edge after CS/FS assertion. |
| 6 (FS) | DSP Frame Sync Input | TLV2541-specific: rising edge signals start of data frame; tied to VDD if unused or configured for SPI-only operation. |
| 7 (VDD) | Positive Supply Voltage | 2.7–5.5 V power input; decoupling with 1 μF + 0.1 μF ceramic capacitors required near pin for stable conversion performance. |
| 8 (SCLK) | Serial Clock Input | Host-provided clock (100 kHz–20 MHz); controls data shift timing and samples internal conversion state. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in conversion clock | Eliminates need for external timing source; guarantees fixed 3.5 μs conversion time independent of SCLK frequency. |
| SPI/DSP serial interface | Direct 3-wire connection to microcontrollers (CPOL = 0, CPHA = 1) or TMS320 DSPs via CS or FS control - no protocol translation required. |
| Rail-to-rail analog input | Supports full dynamic range utilization from GND to VDD, maximizing SNR in single-supply sensor front-ends. |
| Autopower-down mode | Reduces supply current to 2 μA (2.7 V) or 5 μA (5 V) within 0.5 μs after conversion, enabling ultra-low-duty-cycle operation. |
| 8-pin MSOP package | Compact 3.0 × 3.0 mm footprint with exposed thermal pad option (DGKR suffix), suitable for space-constrained portable designs. |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
|
Use Scenario: Battery-powered environmental monitors acquiring temperature, humidity, and pressure from analog sensors at 10–100 Hz. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog outputs; uses autopower-down between samples to extend battery life. Use Value: 2 μA deep-sleep current at 2.7 V enables multi-year operation on coin-cell batteries; 12-bit resolution ensures <0.1% measurement accuracy. |
Use Scenario: PLC analog input modules conditioning 4–20 mA or 0–10 V field signals in factory automation cabinets. IC Role / Device Role / Timing Role: Isolated front-end ADC interfacing with microcontroller via SPI; handles rail-to-rail inputs without external level-shifting. Use Value: ±1 LSB INL/DNL and 72 dB SINAD maintain calibration integrity across temperature; 500 kHz input BW accommodates fast transients. |
| Medical Wearables | Energy Metering Subsystems |
|
Use Scenario: ECG/PPG front-ends in compact wearable patches digitizing low-amplitude bio-signals with minimal power draw. IC Role / Device Role / Timing Role: Low-noise, low-power ADC sampling at ≤200 kSPS; synchronized to host MCU via CS-triggered SPI bursts. Use Value: 72 dB SINAD at 20 kHz preserves signal fidelity for heart-rate variability analysis; 8-pin MSOP eases layout in tight form factors. |
Use Scenario: Residential smart meters measuring voltage/current waveforms for RMS, THD, and power factor calculation. IC Role / Device Role / Timing Role: High-accuracy ADC capturing AC line cycles; referenced to stable external VREF for metrology-grade consistency. Use Value: 12-bit resolution with ±1 LSB linearity meets IEC 62053-21 Class 0.5 accuracy requirements; 200 kSPS supports 4-kHz sampling of 50/60 Hz mains. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-pin SOIC only; no FS pin; max 200 kSPS at 5 V but requires external clock; higher 1.8 mA active current. | Lacks DSP frame-sync support; less flexible in mixed-protocol systems; lower integration reduces BOM count but increases timing design effort. | Choose when board space allows SOIC and external clock generation is acceptable; avoid if DSP interface or ultra-low sleep current is required. |
| MCP3201-I/P | 8-pin PDIP/SOIC; SPI-only (no FS); 2.7–5.5 V; 100 kSPS max; 1.2 mA active current; no autopower-down mode. | No low-power sleep state; limited throughput restricts use in high-sample-rate applications; simpler interface but less feature-rich. | Select for cost-sensitive, non-battery applications where 100 kSPS suffices and continuous conversion is acceptable; not suitable for duty-cycled systems. |
Compared with ADS7822U and MCP3201-I/P, TLV2541IDGKR offers unique DSP frame-sync capability, integrated clocking, and industry-leading 2 μA autopower-down - making it optimal for portable, multi-protocol, and energy-aware designs where timing autonomy and sleep efficiency are critical.
Availability
TLV2541IDGKR is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and medical wearables requiring stable component supply, extended temperature operation (−40°C to +85°C), and long-term production continuity.
Supply support for TLV2541IDGKR 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 low-power design.
The TLV254x family was engineered for battery-powered and space-constrained applications demanding high-resolution ADC performance with minimal quiescent power - targeting portable test equipment, sensor nodes, and industrial IoT endpoints.
FAQ
What is the maximum sampling rate of TLV2541IDGKR and under what conditions?
The TLV2541IDGKR achieves up to 200 kSPS when operated at VDD = 4.5–5.5 V using CS and FS control mode. At 2.7 V, maximum throughput drops to 175 kSPS in CS-only mode. The internal 4 MHz oscillator fixes conversion time at 3.5 μs, so actual throughput depends on SCLK frequency, setup/hold timing, and interface configuration - not just clock speed.
Does TLV2541IDGKR require an external clock source for conversion?
No, TLV2541IDGKR does not require an external clock for conversion. It integrates a dedicated internal oscillator that drives the SAR logic, ensuring consistent 3.5 μs conversion time regardless of SCLK frequency. The SCLK is used solely for serial data transfer timing - not for core ADC operation - simplifying system-level timing design.
How does the autopower-down mode function in TLV2541IDGKR?
In TLV2541IDGKR, autopower-down activates automatically at the end of each conversion cycle. If inactive time exceeds 0.5 μs, supply current drops to 2 μA (2.7 V) or 5 μA (5 V); with ≥2 ms idle time, it reaches deep power-down (1 μA). Wake-up occurs instantly on the next CS falling edge or FS rising edge - no initialization delay is incurred.
Can TLV2541IDGKR interface directly with a TMS320 DSP serial port?
Yes, TLV2541IDGKR supports direct TMS320 DSP interface via its dedicated FS (frame sync) pin (Pin 6). When FS is used, the DSP's FSR signal triggers data framing, and the ADC outputs MSB-aligned data synchronized to SCLK. This eliminates need for GPIO bit-banging and ensures deterministic latency - a capability exclusive to the TLV2541 among the TLV254x family.
What are the absolute maximum ratings for analog input voltage on TLV2541IDGKR?
The absolute maximum analog input voltage for TLV2541IDGKR is −0.3 V to VDD + 0.3 V. Exceeding this range risks permanent damage. For reliable operation, the recommended input range is 0 V to VREF (with VREF between 2 V and VDD). Inputs above VREF saturate to 0xFFF; inputs below GND yield 0x000 - both are safe within absolute limits but represent out-of-range conditions.
TLV2541IDGKR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- 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:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV2541IDGKR FAQ
1.How can I place an order for TLV2541IDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2541IDGKR 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 TLV2541IDGKR reliable?
The price and inventory of TLV2541IDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2541IDGKR is usually 5 days.
3.What payment methods are accepted for TLV2541IDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2541IDGKR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2541IDGKR?
TLV2541IDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2541IDGKR 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 TLV2541IDGKR?
For technical support, including TLV2541IDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2541IDGKR requirements.
6.How does Aetrix verify that TLV2541IDGKR is sourced from the original manufacturer or authorized distributors?
All TLV2541IDGKR 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 TLV2541IDGKR meets industry standards.
7.What is the process for return or replacement of TLV2541IDGKR?
All TLV2541IDGKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2541IDGKR, 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 TLV2541IDGKR part is unused and in its original packaging.
Return procedure for TLV2541IDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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