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Texas Instruments TLV2541IDGK
- Part No.:
- TLV2541IDGK
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV2541IDGK.pdf
- Description:
- IC ADC 12BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,588
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Product details
Overview
TLV2541IDGK from Texas Instruments is a 12-bit, single-channel, successive-approximation analog-to-digital converter (SAR ADC) operating from 2.7 V to 5.5 V with rail-to-rail analog input, 140–200 kSPS throughput, and built-in autopower-down mode consuming only 2 µA at 2.7 V in deep sleep. It interfaces via SPI-compatible 3-wire serial interface (CS, SCLK, SDO) and supports DSP frame sync (FS) for TMS320 systems. Used in portable instrumentation and battery-powered sensor front-ends requiring precision and ultra-low quiescent current.
For engineers reviewing the TLV2541IDGK datasheet, TLV2541IDGK pinout, TLV2541IDGK application, or TLV2541IDGK equivalent, this page delivers verified technical context, exact pin functions, real-world use cases, and validated alternative options - all tied explicitly to the TLV2541IDGK variant with −40°C to +85°C industrial temperature rating and 8-pin MSOP (DGK) package.
Technical Context
The TLV2541IDGK implements a charge redistribution SAR architecture with an internal 4-MHz oscillator driving a fixed 3.5-µs conversion time. Its sampling capacitor acquires signal during a 12-SCLK window starting on the fifth SCLK after CS fall, enabling precise timing control for microcontroller or DSP host systems.
It supports three control modes: CS-only (SPI), FS-only (DSP frame sync), or combined CS/FS (multi-device TMS320 configurations). The device uses unipolar straight-binary output format (000h = GND, FFFh = VREF − 1 LSB) and requires external reference voltage applied to VREF, with analog input range bounded by GND and VREF.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR architecture delivering 4096 discrete digital codes with ±1 LSB max INL/DNL - ensures accurate linear mapping for sensor and control loop applications. |
| Throughput Rate | 140–200 kSPS depending on supply voltage and control mode (e.g., 200 kSPS at VDD = 4.5 V with CS+FS mode) - supports real-time monitoring of medium-bandwidth signals like motor current or temperature ramps. |
| Supply Voltage | 2.7 V to 5.5 V single supply - enables direct integration into mixed-voltage systems (e.g., 3.3 V MCU + 5 V analog stage) without level-shifting. |
| Power Consumption | 0.95 mA typical at 2.7 V active; 2 µA autopower-down (≥0.5 µs inactive); 1 µA deep power-down (≥2 ms inactive) - extends battery life in portable data loggers. |
| Analog Input Bandwidth | 500 kHz (−1 dB), rail-to-rail input range - accommodates fast transients and full-scale DC-coupled signals without external amplification. |
| AC Performance (fi = 20 kHz) | SINAD = 72 dB, SFDR = 85 dB at 200 kSPS/VDD = 5.5 V - provides >11.8 ENOB for high-fidelity acquisition in audio-grade or precision measurement circuits. |
| Reference Interface | External VREF input (2 V to VDD), 20–25 kΩ dynamic impedance during conversion - allows flexible scaling (e.g., 2.5 V reference for 0–2.5 V sensor output). |
Pinout & Package
TLV2541IDGK is housed in an 8-pin MSOP (DGK) package, 3.0 mm × 3.0 mm × 1.0 mm body, exposed thermal pad optional, RoHS-compliant. Pinout matches TLV2541 functional variant (single-ended input).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS | Chip Select / Frame Sync Input | Active-low digital control initiating conversion cycle; doubles as FS when tied to DSP frame sync - enables flexible host interface selection without hardware change. |
| 2: VREF | External Reference Input | Defines full-scale analog input range (0 V to VREF); must be stable and low-noise - decoupling with 0.1 µF ceramic near pin is mandatory for AC specs. |
| 3: GND | Analog & Digital Ground | Common return for internal circuitry; separate analog/digital ground planes recommended - improper grounding degrades SINAD and increases noise floor. |
| 4: AIN | Analog Input Channel | Single-ended input accepting rail-to-rail signals up to VDD; 45 pF input capacitance requires source impedance ≤500 Ω for <1 LSB error in sampling. |
| 5: SDO | Serial Data Output | 3-state MSB-first output presenting 12-bit result plus 4 don't-care bits; high-impedance when CS high - allows multi-drop SPI bus sharing. |
| 6: VDD | Positive Supply Voltage | 2.7–5.5 V power input; requires local 1 µF + 0.1 µF decoupling - insufficient bypassing causes conversion errors and increased autopower-down latency. |
| 7: FS | DSP Frame Sync Input | Optional rising-edge trigger indicating start of serial data frame; tied to VDD if unused - critical for deterministic timing in TMS320-based motor control loops. |
| 8: SCLK | Serial Clock Input | Host-provided clock (100 kHz–20 MHz); falling edge latches output data - duty cycle tolerance 40/60% ensures reliable sampling across voltage/temp ranges. |
Key Features
| Feature | Design Value |
|---|---|
| Autopower-down mode | Reduces supply current to 2 µA (2.7 V) or 5 µA (5 V) within 0.5 µs after conversion - eliminates need for external enable logic in intermittent-sampling systems. |
| Built-in conversion clock | Internal 4-MHz oscillator delivers fixed 3.5-µs conversion time independent of SCLK frequency - removes timing dependency on host clock stability. |
| Rail-to-rail analog input | Supports 0 V to VDD input range with 500 kHz bandwidth - enables direct connection to op-amp buffers or resistive sensors without level-shifting. |
| SPI/DSP-compatible interface | 3-wire serial protocol (CS/SCLK/SDO) with optional FS pin - interoperates with STM32, MSP430, and TMS320 families without glue logic. |
| Industrial temperature range | Specified from −40°C to +85°C (TLV2541I grade) - qualified for deployment in automotive cabin modules, industrial PLC I/O, and outdoor environmental monitors. |
Applications
| Portable Data Logger | Motor Current Monitoring |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and light intensity at 100 Hz intervals over 6 months. IC Role / Device Role / Timing Role: TLV2541IDGK performs single-channel analog acquisition with autopower-down between samples, reducing average current to <10 µA. Use Value: Enables >10,000 measurement cycles per CR2032 coin cell due to 2 µA deep sleep current and 3.5 µs conversion time minimizing active duration. |
Use Scenario: Real-time phase current sampling in a 3-phase BLDC motor drive using shunt resistor feedback. IC Role / Device Role / Timing Role: TLV2541IDGK digitizes amplified shunt voltage with 200 kSPS throughput and 72 dB SINAD to support field-oriented control algorithms. Use Value: Delivers 11.8 ENOB at 20 kHz input, ensuring <0.1% current measurement error under PWM switching noise conditions. |
| Medical Vital Sign Monitor | Industrial Process Controller |
|
Use Scenario: Wearable ECG front-end acquiring lead-II differential signal conditioned through instrumentation amplifier. IC Role / Device Role / Timing Role: TLV2541IDGK serves as primary ADC with external 2.5 V reference, sampling at 250 Hz with rail-to-rail input handling amplifier output swing. Use Value: ±1 LSB INL guarantees clinical-grade linearity over full temperature range, meeting IEC 60601-2-27 accuracy requirements. |
Use Scenario: Analog input module in programmable logic controller measuring 4–20 mA loop current via precision shunt resistor. IC Role / Device Role / Timing Role: TLV2541IDGK converts shunt voltage with 12-bit resolution and 500 kHz input bandwidth, supporting fast response to process transients. Use Value: 2.7–5.5 V supply range allows direct operation from PLC's 3.3 V or 5 V rail, eliminating isolated DC-DC converter cost and footprint. |
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; 200 kSPS; no FS pin; 1.8–5.25 V supply; higher 1.5 mA active current at 2.7 V | Lacks DSP frame sync support; less suitable for TMS320-based systems requiring deterministic FS-triggered sampling | Prefer when board space allows SOIC and host is SPI-only microcontroller without DSP interface needs. |
| MAX11100ETE+ | 12-bit, 500 kSPS, 2.7–3.6 V supply only; internal reference; 8-pin TDFN; 1.5 µA shutdown current | Higher speed but narrower voltage range; internal ref limits full-scale flexibility; no FS capability | Choose for ultra-low-power 3.3 V systems where external reference is undesirable and throughput >200 kSPS is required. |
Compared with ADS7822U and MAX11100ETE+, the TLV2541IDGK uniquely combines industrial temperature rating, DSP frame sync compatibility, wide 2.7–5.5 V supply, and 2 µA autopower-down - making it optimal for mixed-signal embedded systems demanding robustness, interface flexibility, and battery longevity.
Availability
TLV2541IDGK is available at Aetrix Electronics and suitable for portable instrumentation, motor control feedback, medical vital sign monitoring, and industrial process controllers requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for TLV2541IDGK 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 TLV2541IDGK belongs to TI's TLV254x family of low-power 12-bit SAR ADCs, engineered for battery-operated and thermally constrained applications where accuracy, small size, and minimal active/sleep current are critical system requirements.
FAQ
What is the maximum SCLK frequency supported by TLV2541IDGK in CS+FS mode at 4.5 V?
The TLV2541IDGK supports up to 20 MHz SCLK in CS+FS control mode when VDD = 4.5 V, enabling minimum total cycle time of 4.35 µs. This allows sustained 200 kSPS throughput while maintaining timing margins for reliable data capture in high-speed microcontroller or DSP interfaces. The device's internal oscillator remains independent of SCLK, preserving consistent 3.5-µs conversion time regardless of serial clock rate.
Does TLV2541IDGK require an external reference voltage?
Yes, TLV2541IDGK requires an external reference voltage applied to the VREF pin, with valid range from 2 V to VDD. The reference sets the full-scale input range (0 V to VREF), and its stability directly impacts DC accuracy and AC performance. Internal reference is not provided; using a precision 2.5 V or 4.096 V reference IC is recommended for applications demanding <±1 LSB total unadjusted error.
How does autopower-down work in TLV2541IDGK, and what is the wake-up latency?
TLV2541IDGK enters autopower-down automatically after conversion completion. Power drops to 2 µA (2.7 V) or 5 µA (5 V) within 0.5 µs. For deep power-down (1 µA), ≥2 ms inactive time is required. Wake-up occurs immediately on the next CS falling edge or FS rising edge - no additional delay or initialization sequence is needed, ensuring deterministic timing for periodic sampling.
Can TLV2541IDGK interface directly with a TMS320C28x DSP serial port?
Yes, TLV2541IDGK supports direct interfacing with TMS320C28x DSP serial ports using FS control mode: connect DSP's FSR to TLV2541IDGK's FS pin and configure the serial port for frame-sync operation. The device presents MSB on SDO after FS rising edge and outputs valid data on first SCLK falling edge - matching C28x McBSP timing requirements without external logic.
What is the analog input impedance and capacitance of TLV2541IDGK, and how does it affect signal source design?
TLV2541IDGK exhibits 45 pF input capacitance and ~600 Ω on-resistance at 2.7 V on the AIN pin. To limit sampling error to <1 LSB, source impedance must be ≤500 Ω (per datasheet Note 2: tsample ≥ 0.9 × 50 pF × (RS + 0.5 kΩ)). High-impedance sources require an external buffer op-amp with low output impedance and sufficient bandwidth (>1 MHz) to settle within the 300 ns sampling window.
TLV2541IDGK Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Texas Instruments
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- 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:
- -
TLV2541IDGK FAQ
1.How can I place an order for TLV2541IDGK through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2541IDGK 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 TLV2541IDGK reliable?
The price and inventory of TLV2541IDGK are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2541IDGK is usually 5 days.
3.What payment methods are accepted for TLV2541IDGK?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2541IDGK transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2541IDGK?
TLV2541IDGK orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2541IDGK 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 TLV2541IDGK?
For technical support, including TLV2541IDGK datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2541IDGK requirements.
6.How does Aetrix verify that TLV2541IDGK is sourced from the original manufacturer or authorized distributors?
All TLV2541IDGK 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 TLV2541IDGK meets industry standards.
7.What is the process for return or replacement of TLV2541IDGK?
All TLV2541IDGK units undergo pre-shipment inspection (PSI). If there is an issue with TLV2541IDGK, 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 TLV2541IDGK part is unused and in its original packaging.
Return procedure for TLV2541IDGK:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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