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Texas Instruments TLV2541CDGKR
- Part No.:
- TLV2541CDGKR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
TLV2541CDGKR.pdf
- Description:
- IC ADC 12BIT SAR 8VSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,282
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Product details
Overview
TLV2541CDGKR 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, achieves 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 - used in portable instrumentation and battery-powered sensor interfaces.
For engineers reviewing the TLV2541CDGKR datasheet, TLV2541CDGKR pinout, TLV2541CDGKR application, or TLV2541CDGKR equivalent, this page delivers verified electrical specs, MSOP-8 pin functions, real-world timing behavior, low-power operation trade-offs, and validated alternative options for industrial data acquisition and embedded control systems.
Technical Context
The TLV2541CDGKR implements a charge redistribution SAR architecture with an integrated 4 MHz conversion clock oscillator, enabling fixed 3.5 μs conversion time independent of SCLK frequency. Its control logic supports three modes: CS-only (SPI), CS-as-FS (DSP), or dual CS/FS (TMS320 DSP multi-device sync), with output data valid on the first falling SCLK edge after CS assertion.
It uses unipolar straight-binary output coding (000h = GND, FFFh = VREF − 1 LSB), requires external VREF (2 V to VDD), and features rail-to-rail analog input with 20–45 pF input capacitance. Autopower-down reduces current to 2 μA (2.7 V) or 5 μA (5 V) within 0.5 μs after conversion completion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR ADC with unipolar straight-binary output (000h to FFFh) |
| Max Throughput | 200 kSPS at VDD = 4.5–5.5 V with CS/FS control; 175 kSPS with CS-only SPI mode |
| INL / DNL | ±1 LSB max - ensures monotonicity and <0.025% full-scale linearity error over temperature |
| SINAD / SFDR | 72 dB / 85 dB at fi = 20 kHz - supports high-fidelity signal capture in anti-aliasing-limited applications |
| Supply Range | 2.7 V to 5.5 V - enables direct interfacing with 3.3 V and 5 V microcontrollers without level shifters |
| Autopower-Down Current | 2 μA at 2.7 V, 5 μA at 5 V - reduces average power in burst-sampling systems with >0.5 μs idle intervals |
| Analog Input BW | 500 kHz (−1 dB) - accommodates baseband signals up to ~150 kHz with <0.1% gain error |
Pinout & Package
TLV2541CDGKR is housed in an 8-pin MSOP (DGK) package with 0.65 mm pitch, 3.0 mm × 3.0 mm footprint, and exposed thermal pad (not electrically connected). Pinout is validated per TI SLAS245E datasheet Figure 1 and Terminal Functions table.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS | Chip Select input | Active-low digital control initiating sampling cycle; also serves as frame sync when tied to DSP FS |
| 2: VREF | External reference voltage input | Defines full-scale range (2 V to VDD); impedance varies from 20 kΩ (active) to 100 MΩ (standby) |
| 3: GND | Analog/digital ground return | Common reference for all analog and digital circuitry; must be low-impedance connection to system ground |
| 4: AIN | Analog input channel | Single-ended input with rail-to-rail capability and 20–45 pF capacitance; accepts 0 V to VDD range |
| 5: SDO | Serial data output | 3-state MSB-first output; tri-stated when CS high; data valid on first falling SCLK edge after CS fall |
| 6: VDD | Positive supply voltage | Power source for analog and digital sections; requires local 1-μF + 0.1-μF decoupling per datasheet |
| 7: FS | DSP frame sync input | Used only by TLV2541; rising edge triggers MSB output when CS held low; tie to VDD if unused |
| 8: SCLK | Serial clock input | Host-provided clock (100 kHz–20 MHz); controls data shift timing and internal state transitions |
Key Features
| Feature | Design Value |
|---|---|
| Built-in conversion clock oscillator | 4 MHz internal oscillator ensures consistent 3.5 μs conversion time regardless of SCLK frequency or jitter |
| Rail-to-rail analog input | Supports full 0 V to VDD input range without external biasing - simplifies front-end design for single-supply systems |
| SPI/DSP serial interface | 3-wire (CS/SCLK/SDO) compatibility with microcontrollers and TMS320 DSPs - no protocol translation required |
| Autopower-down mode | Reduces quiescent current to 2 μA (2.7 V) within 0.5 μs post-conversion - extends battery life in intermittent-sampling apps |
| Low operating current | 0.95 mA typical at 2.7 V - enables integration into space- and power-constrained portable measurement devices |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitors capturing temperature, humidity, and pressure at 10–100 Hz intervals. IC Role / Device Role / Timing Role: TLV2541CDGKR performs single-channel, low-latency digitization with autopower-down between samples to minimize average current draw. Use Value: Achieves >1-year battery life using CR2032 cells due to 2 μA deep-sleep current and 3.5 μs conversion time enabling rapid wake-sleep cycles. |
Use Scenario: 4–20 mA loop-powered transmitters conditioning analog sensor outputs before HART or Modbus transmission. IC Role / Device Role / Timing Role: TLV2541CDGKR digitizes isolated analog inputs with rail-to-rail input range and minimal external components. Use Value: Eliminates need for input op-amp biasing or level-shifting circuitry, reducing BOM count and PCB area in DIN-rail mount modules. |
| Medical Vital Sign Monitors | Energy Metering Front Ends |
Use Scenario: Wearable ECG/PPG modules acquiring biopotential signals with low noise and high DC accuracy. IC Role / Device Role / Timing Role: TLV2541CDGKR provides 12-bit resolution and ±1 LSB INL for precise baseline tracking and waveform fidelity. Use Value: Meets IEC 60601-2-47 requirements for static accuracy in diagnostic-grade analog front ends without calibration overhead. |
Use Scenario: Residential smart meters measuring voltage/current waveforms at 2–4 kSPS for RMS, harmonic, and power factor calculation. IC Role / Device Role / Timing Role: TLV2541CDGKR digitizes conditioned AC signals with 72 dB SINAD at 20 kHz, supporting Class 0.5 metering accuracy. Use Value: Enables cost-effective Class 1 metering with single-chip ADC solution, avoiding higher-cost sigma-delta alternatives. |
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; 1.25 mW @ 3 V | Lacks DSP frame sync support; lower supply voltage flexibility; identical single-ended input topology | Preferred for cost-sensitive 3.3 V systems where DSP interface is unnecessary and SOIC layout is preferred |
| MCP3201-I/P | 8-pin PDIP/SOIC; 100 kSPS; SPI-only (no FS); 2.7–5.5 V; 0.5 mA @ 5 V; no autopower-down | Lower throughput and no power-saving mode; simpler timing but less flexible control options | Selected for legacy designs requiring DIP packaging or where ultra-low sleep current is not required |
Compared with ADS7822U and MCP3201-I/P, TLV2541CDGKR uniquely combines MSOP-8 compactness, dual-mode (SPI/DSP) control, and sub-μA autopower-down - making it optimal for next-generation portable and industrial edge nodes demanding both size and energy efficiency.
Availability
TLV2541CDGKR is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, medical vital sign monitors, and energy metering front ends requiring stable component supply across extended temperature ranges (0°C to 70°C).
Supply support for TLV2541CDGKR 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 and embedded processing technologies, with decades of expertise in precision data converters and low-power design.
The TLV2541CDGKR belongs to TI's TLV254x family of low-power, miniature 12-bit SAR ADCs - engineered for battery-operated and space-constrained applications requiring high DC accuracy and flexible digital interfacing.
FAQ
What is the maximum SCLK frequency supported by TLV2541CDGKR in CS/FS mode?
The TLV2541CDGKR supports up to 20 MHz SCLK in CS-and-FS control mode at VDD = 4.5–5.5 V, enabling minimum total cycle time of 4.35 μs. At 2.7 V, maximum SCLK is 15 MHz. Exceeding these limits risks premature termination of conversion and invalid output data, as specified in Table 1 of the SLAS245E datasheet.
Does TLV2541CDGKR require an external reference voltage?
Yes, TLV2541CDGKR requires an external reference voltage applied to the VREF pin, ranging from 2 V to VDD. The device does not include an internal reference. Reference impedance is 20–25 kΩ during conversion and rises to 100 MΩ in standby, allowing use of low-power reference ICs or resistor-divider networks with appropriate decoupling.
How does autopower-down work in TLV2541CDGKR, and what current does it draw?
TLV2541CDGKR enters autopower-down automatically after conversion completes. It draws 2 μA at 2.7 V or 5 μA at 5 V within 0.5 μs. For deep power-down (1 μA), ≥2 ms inactive time between cycles is required. Wake-up occurs immediately on the next CS falling edge or FS rising edge - no initialization delay.
Can TLV2541CDGKR interface directly with a TMS320 DSP serial port?
Yes, TLV2541CDGKR supports direct TMS320 DSP interface via three configurations: (1) CS-as-FS (FS pin tied to VDD, CS driven by DSP FSR), (2) dedicated FS pin connection, or (3) combined CS/FS for multi-device synchronization. All modes use standard DSP serial frame timing with MSB-first output and no protocol translation needed.
What is the analog input structure of TLV2541CDGKR, and how does it differ from TLV2545CDGKR?
TLV2541CDGKR features a single-ended analog input (AIN pin), accepting 0 V to VDD with rail-to-rail capability. In contrast, TLV2545CDGKR uses pseudo-differential input (AIN+, AIN−), allowing common-mode noise rejection. TLV2541CDGKR cannot perform differential measurements - its architecture is strictly single-channel unipolar.
TLV2541CDGKR 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-VSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV2541CDGKR FAQ
1.How can I place an order for TLV2541CDGKR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2541CDGKR 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 TLV2541CDGKR reliable?
The price and inventory of TLV2541CDGKR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2541CDGKR is usually 5 days.
3.What payment methods are accepted for TLV2541CDGKR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2541CDGKR transactions.
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4.How is shipping managed for TLV2541CDGKR?
TLV2541CDGKR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2541CDGKR 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 TLV2541CDGKR?
For technical support, including TLV2541CDGKR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2541CDGKR requirements.
6.How does Aetrix verify that TLV2541CDGKR is sourced from the original manufacturer or authorized distributors?
All TLV2541CDGKR 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 TLV2541CDGKR meets industry standards.
7.What is the process for return or replacement of TLV2541CDGKR?
All TLV2541CDGKR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2541CDGKR, 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 TLV2541CDGKR part is unused and in its original packaging.
Return procedure for TLV2541CDGKR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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