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Texas Instruments TLV2541IDR
- Part No.:
- TLV2541IDR
- Manufacturer:
- Texas Instruments
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
TLV2541IDR.pdf
- Description:
- IC ADC 12BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,484
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Product details
Overview
TLV2541IDR 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 a single 2.7 V to 5.5 V supply, 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 and compact size.
For engineers reviewing the TLV2541IDR datasheet, TLV2541IDR pinout, TLV2541IDR application, or TLV2541IDR equivalent, key selection considerations include its 8-pin SOIC 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 ports or TMS320 DSP frame sync protocols.
Technical Context
The TLV2541IDR 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 - though only the TLV2541 variant supports all three.
It uses a single analog input channel (AIN), accepts external reference voltage on VREF, and provides unipolar straight-binary output via 3-wire SDO/SCLK/CS interface. Sampling occurs over 12 SCLK cycles after CS falling edge, followed by 3.5 μs internal conversion and MSB-first 12-bit data output aligned to SCLK falling edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit SAR ADC delivering 4096 discrete digital codes for precise analog signal digitization. |
| Max Throughput | 200 kSPS at 4.5–5.5 V supply, enabling real-time sampling of audio-band and control-loop signals. |
| INL / DNL | ±1 LSB maximum - ensures monotonicity and ≤0.024% full-scale linearity error for measurement integrity. |
| SINAD | 72 dB at 20 kHz input and 200 kSPS - supports >11.6 effective bits in noise-sensitive applications. |
| Supply Range | 2.7 V to 5.5 V single supply - compatible with Li-ion, 3.3 V, and 5 V system rails without level-shifting. |
| Autopower-Down | 2 μA at 2.7 V (0.5 μs activation) - reduces idle power by >99.8% versus active 0.95 mA operation. |
| Analog Input BW | 500 kHz −1 dB bandwidth - supports accurate digitization of fast transients and wideband sensor outputs. |
Pinout & Package
TLV2541IDR is housed in an 8-pin SOIC (D) package rated for −40°C to +85°C industrial temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS | Chip Select input | Active-low enable initiating sampling, conversion, and SDO release; also serves as FS when tied to DSP frame sync. |
| 2: VREF | External reference input | Defines full-scale range (0 V to VREF); supports 2 V to VDD, enabling flexible scaling and ratiometric sensing. |
| 3: GND | Analog/digital ground | Common return for internal circuitry; requires low-impedance connection to minimize noise coupling into SAR core. |
| 4: AIN | Analog input | Single-ended input accepting rail-to-rail signals up to VDD; 45 pF input capacitance demands careful driver impedance matching. |
| 5: SDO | Serial data output | 3-state MSB-first output synchronized to SCLK falling edge; high-impedance when CS is high or between conversions. |
| 6: VDD | Positive supply | Power source for analog and digital sections; requires local 1-μF + 0.1-μF decoupling per datasheet layout guidance. |
| 7: FS | DSP frame sync input | Optional input indicating start of serial data frame; must be tied to VDD if unused in SPI mode. |
| 8: SCLK | Serial clock input | Host-provided clock up to 20 MHz; controls timing of sampling, data output, and internal state transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Built-in conversion clock | Eliminates need for external crystal or oscillator; enables fixed 3.5 μs conversion time independent of SCLK frequency. |
| Rail-to-rail analog input | Supports full dynamic range utilization from GND to VDD, simplifying front-end design for unipolar sensors. |
| SPI/DSP serial interface | 3-wire protocol (CS/SCLK/SDO) with configurable frame sync - interoperable with ARM Cortex-M, MSP430, and C2000 DSPs. |
| Autopower-down mode | Reduces supply current to 2 μA (2.7 V) or 5 μA (5 V) within 0.5 μs after conversion, optimizing battery life in intermittent-sampling systems. |
| Industrial temperature range | −40°C to +85°C operation validated per TI SLAS245E specification - suitable for automotive body electronics and industrial PLC modules. |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
|
Use Scenario: Battery-powered environmental monitors acquiring temperature, humidity, and pressure at 100–200 Hz intervals. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog outputs from analog front-end ICs; samples triggered by MCU timer every 5–10 ms. Use Value: 2 μA autopower-down current extends AA battery life to >2 years; 500 kHz input bandwidth preserves step response of thermistor RC filters. |
Use Scenario: DIN-rail mounted I/O modules converting 4–20 mA current loop signals in factory automation systems. IC Role / Device Role / Timing Role: Isolated analog input stage ADC interfacing via optocoupled SPI bus to host controller; synchronized to PLC scan cycle. Use Value: ±1 LSB INL ensures <0.025% measurement accuracy across 0–100°C ambient; 2.7–5.5 V supply tolerance accommodates 3.3 V and 5 V backplane rails. |
| Medical Vital Sign Monitors | Energy Metering Subsystems |
|
Use Scenario: Wearable ECG/PPG devices measuring biopotentials with ultra-low power constraints and noise-sensitive analog paths. IC Role / Device Role / Timing Role: Low-noise ADC sampling amplified bio-signals at 200 kSPS; integrated reference minimizes external component count. Use Value: 72 dB SINAD at 20 kHz enables clean extraction of respiration harmonics; rail-to-rail input eliminates level-shifting for AC-coupled amplifiers. |
Use Scenario: Smart meter anti-tampering subsystems digitizing shunt voltage drops and current transformer outputs for real-time power calculation. IC Role / Device Role / Timing Role: Secondary ADC capturing auxiliary measurements (temperature, supply voltage) alongside primary metrology ADC. Use Value: 12-bit resolution with ±1 LSB DNL guarantees monotonicity for calibration curve interpolation; SOIC package supports automated optical inspection. |
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 MSOP, 200 kSPS, 2.7–5.25 V, no FS pin, 1.25 mW typical power at 5 V | Lacks DSP frame sync support; optimized for pure SPI microcontroller interfaces | Select when DSP integration is unnecessary and MSOP footprint is preferred for space-constrained PCBs. |
| MCP3201-I/P | 8-pin PDIP/SOIC, 100 kSPS, 2.7–5.5 V, no autopower-down, 350 μA active current | Lower throughput and no deep power-down mode; simpler control (no FS/CS dual-mode) | Choose for cost-sensitive, non-battery applications where 100 kSPS suffices and continuous sampling is required. |
Compared with ADS7822U and MCP3201-I/P, TLV2541IDR uniquely combines DSP frame sync capability, sub-μA autopower-down, and guaranteed ±1 LSB linearity across industrial temperature - making it optimal for portable, multi-protocol, and precision measurement designs.
Availability
TLV2541IDR is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and medical vital sign monitors requiring stable component supply and long-term manufacturability.
Supply support for TLV2541IDR 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 TLV254x family was engineered for battery-operated measurement systems needing high-resolution digitization, minimal quiescent current, and seamless integration with both microcontrollers and DSPs - targeting portable test equipment and industrial IoT endpoints.
FAQ
What is the maximum SCLK frequency supported by TLV2541IDR in SPI mode at 2.7 V?
The TLV2541IDR supports up to 10 MHz SCLK in CS-only (SPI) mode at 2.7 V supply, as specified in Table 1 of the SLAS245E datasheet. This enables minimum total cycle time of ~4.35 μs and sustained 175 kSPS throughput while maintaining timing margins for reliable data capture in resource-constrained microcontroller systems.
Does TLV2541IDR require an external clock source for conversion?
No, TLV2541IDR does not require an external clock source for conversion. It integrates a built-in oscillator that generates the internal conversion clock, resulting in a fixed 3.5 μs conversion time regardless of SCLK frequency. This simplifies system design by removing dependency on external timing components and improving jitter immunity.
Can TLV2541IDR operate with a 2.0 V reference voltage?
Yes, TLV2541IDR supports VREF as low as 2.0 V per the "Recommended Operating Conditions" table (VREF min = 2 V). When using 2.0 V reference, full-scale input range becomes 0–2.0 V, and the device maintains ±1 LSB INL/DNL performance - enabling high-precision ratiometric measurements with low-voltage sensors or battery-monitoring circuits.
How does autopower-down activate in TLV2541IDR, and what is the wake-up latency?
Autopower-down activates automatically at the end of each conversion cycle when CS remains high and SCLK is inactive. TLV2541IDR reaches 2 μA (2.7 V) or 5 μA (5 V) within 0.5 μs. Wake-up occurs on the next falling edge of CS or rising edge of FS, with no added latency - the first SCLK after wake-up initiates sampling without delay, preserving deterministic timing in burst-mode acquisition.
Is TLV2541IDR pin-compatible with other variants in the TLV254x family?
No, TLV2541IDR is not pin-compatible with TLV2542IDR or TLV2545IDR. While all share the same 8-pin SOIC package, pin 5 is SDO on TLV2541IDR but AIN1 on TLV2542IDR and AIN(−) on TLV2545IDR. Pin 7 is FS on TLV2541IDR but SCLK on TLV2542/45. PCB layout must be specific to TLV2541IDR's pin mapping to ensure correct functionality.
TLV2541IDR 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:
- 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-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
TLV2541IDR FAQ
1.How can I place an order for TLV2541IDR through Aetrix?
Please submit a Request for Quotation (RFQ) for TLV2541IDR 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 TLV2541IDR reliable?
The price and inventory of TLV2541IDR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for TLV2541IDR is usually 5 days.
3.What payment methods are accepted for TLV2541IDR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for TLV2541IDR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for TLV2541IDR?
TLV2541IDR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your TLV2541IDR 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 TLV2541IDR?
For technical support, including TLV2541IDR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your TLV2541IDR requirements.
6.How does Aetrix verify that TLV2541IDR is sourced from the original manufacturer or authorized distributors?
All TLV2541IDR 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 TLV2541IDR meets industry standards.
7.What is the process for return or replacement of TLV2541IDR?
All TLV2541IDR units undergo pre-shipment inspection (PSI). If there is an issue with TLV2541IDR, 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 TLV2541IDR part is unused and in its original packaging.
Return procedure for TLV2541IDR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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