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Analog Devices Inc. LTC2401CMS#TRPBF
- Part No.:
- LTC2401CMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2401CMS#TRPBF.pdf
- Description:
- IC ADC 24BIT SIGMA-DELTA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,548
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Product details
Overview
LTC2401CMS#TRPBF from Analog Devices (formerly Linear Technology) is a 1-channel, 24-bit micropower delta-sigma ADC in MSOP-10 package, featuring no-latency digital filtering, 4ppm INL, 0.6ppm RMS noise, and single-cycle settling. It operates from 2.7V to 5.5V, supports pseudo-differential bridge digitization, and is used in high-precision weight scales and strain gauge transducers.
For engineers reviewing the LTC2401CMS#TRPBF datasheet, LTC2401CMS#TRPBF pinout, LTC2401CMS#TRPBF application, or LTC2401CMS#TRPBF equivalent, key selection criteria include its 50Hz/60Hz notch rejection via FO pin, extended input range (–12.5% to +112.5% VREF), integrated oscillator eliminating external timing components, and SPI/MICROWIRE-compatible 3-wire interface with no missing codes.
Technical Context
The LTC2401CMS#TRPBF implements a proprietary decimating FIR filter architecture that settles in one conversion cycle-eliminating latency typical of conventional ∆Σ converters and enabling deterministic timing for multiplexed sensor systems. Its auto-calibrating architecture performs zero-scale and full-scale calibration every cycle, ensuring long-term stability against temperature drift and supply variation.
It uses an internal oscillator (no external crystal required) to achieve ≥110dB normal-mode rejection at 50Hz or 60Hz ±2%, selectable via FO pin logic level. The device accepts an external reference from 0.1V to VCC and supports live-zero operation with analog input range from ZSSET – 0.12VREF to FSSET + 0.12VREF (VREF = FSSET – ZSSET).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 24-bit with no missing codes-guarantees monotonicity and full dynamic range utilization in precision measurement. |
| INL | 4ppm of VREF (typ)-enables sub-1µV linearity error with 2.5V reference, critical for metrology-grade instrumentation. |
| RMS Noise | 0.6ppm of VREF (typ)-translates to ~1.5µVRMS noise floor with 2.5V reference, supporting 21.5+ effective bits. |
| Supply Current | 200µA (typ) in conversion mode, 20µA in sleep-enables battery-powered portable instruments with multi-year runtime. |
| Notch Rejection | ≥110dB at 50Hz or 60Hz ±2%-rejects mains interference without external filtering, simplifying PCB layout and system design. |
| Input Range | –12.5% to +112.5% VREF-accommodates sensor offset, gain error, and overrange conditions without clipping or recalibration. |
| Reference Range | 0.1V to VCC-supports low-voltage references for improved SNR in low-power systems while maintaining accuracy. |
Pinout & Package
Package: 10-lead plastic MSOP (MS10), 3mm × 3mm, 0.5mm pitch, exposed pad (not electrically connected). Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | 2.7V–5.5V operation; requires local 10µF tantalum + 0.1µF ceramic bypass to GND for stable conversion performance. |
| FSSET (Pin 2) | Full-scale reference input | Sets upper end of input range; defines VREF when paired with ZSSET (VREF = FSSET – ZSSET). |
| CH1 (Pin 3) | Channel 1 analog input | No-connect on LTC2401CMS#TRPBF-device is single-channel; pin is unused and must be left floating or grounded. |
| CH0 (Pin 4) | Channel 0 analog input | Primary pseudo-differential input; accepts voltage from ZSSET – 0.12VREF to FSSET + 0.12VREF. |
| ZSSET (Pin 5) | Zero-scale reference input | Sets lower end of input range; establishes offset point for live-zero operation and extended range support. |
| GND (Pin 6) | Common ground reference | Single-point analog/digital/reference ground connection; must tie directly to low-impedance ground plane. |
| CS (Pin 7) | Active-low chip select | Wakes device from sleep, enables SDO output, and initiates data transfer; falling edge triggers readout sequence. |
| SDO (Pin 8) | 3-state serial data output | 32-bit output stream (status + 24-bit result + 4 sub-LSBs); high-impedance when CS = HIGH. |
| SCK (Pin 9) | Bidirectional serial clock | Output in internal-clock mode (19.2kHz), input in external-clock mode; determines SPI/MICROWIRE compatibility. |
| FO (Pin 10) | Frequency control input | Selects 50Hz (FO = VCC) or 60Hz (FO = GND) notch; enables external oscillator (2.56–307.2kHz) for custom rejection. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency ∆Σ architecture | Single-cycle settling eliminates filter delay-enables real-time sampling in time-critical multiplexed sensor arrays. |
| Auto-calibration per conversion | Continuous zero-scale and full-scale correction ensures <0.01ppm/°C offset drift and <0.04ppm/°C full-scale drift. |
| Extended input range | –12.5% to +112.5% VREF accommodates sensor preamplifier offsets and overrange events without firmware intervention. |
| Integrated oscillator | Eliminates external crystal/capacitor-reduces BOM count, board space, and EMI susceptibility in compact designs. |
| Flexible 3-wire interface | Hardware-configurable SPI/MICROWIRE mode (no register writes) supports seamless integration with legacy microcontrollers. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
|
Use Scenario: High-resolution load cell readout in commercial and industrial weighing platforms requiring legal-for-trade certification. IC Role / Device Role / Timing Role: Pseudo-differential bridge digitizer with live-zero compensation and 24-bit resolution for sub-gram repeatability. Use Value: 4ppm INL and 0.6ppm noise enable <10,000:1 system resolution; 50Hz/60Hz notch eliminates mains-induced drift in factory environments. |
Use Scenario: Precision force and pressure measurement in test benches and structural health monitoring systems. IC Role / Device Role / Timing Role: Low-drift, low-power ADC capturing microvolt-level Wheatstone bridge outputs with automatic offset cancellation. Use Value: Auto-calibration per conversion maintains accuracy across temperature swings; extended input range absorbs amplifier gain errors without recalibration. |
| Gas Analyzers | Industrial Process Control |
|
Use Scenario: Electrochemical or NDIR sensor signal conditioning in portable environmental gas detection equipment. IC Role / Device Role / Timing Role: Ultra-low-noise front-end digitizer for ppm-level gas concentration calculation with minimal power budget. Use Value: 200µA supply current enables multi-year battery life; 0.1V–VCC reference flexibility allows direct use of low-noise bandgap references. |
Use Scenario: Analog input module in PLCs and distributed I/O systems measuring temperature, flow, and level sensors. IC Role / Device Role / Timing Role: Isolated channel ADC with robust ESD tolerance and wide common-mode input range for noisy plant-floor environments. Use Value: ≥110dB 50/60Hz rejection prevents false alarms in AC-coupled sensor loops; MSOP-10 footprint eases thermal management in dense modules. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-resolution sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPWR | 24-bit, 4kSPS, integrated PGA and burn-out current sources; requires external clock or crystal; higher supply current (350µA). | Targeted at RTD/thermocouple systems with built-in sensor excitation; less suitable for direct bridge digitization without external amplification. | Choose ADS124S08IPWR when sensor excitation, programmable gain, or faster throughput (>15SPS) is required. |
| MAX11200EEE+ | 24-bit, 10SPS, internal oscillator, 0.5ppm noise, but only 100dB 50/60Hz rejection; no extended input range. | Optimized for low-cost portable meters; lacks live-zero capability and fails to meet stringent industrial EMI requirements. | Choose MAX11200EEE+ only for cost-sensitive, non-critical measurements where 100dB rejection suffices. |
Compared with ADS124S08IPWR and MAX11200EEE+, the LTC2401CMS#TRPBF delivers superior 50/60Hz rejection (≥110dB vs. 100dB), true live-zero operation, and lower power (200µA vs. 350µA), making it optimal for metrology-grade bridge-based sensing where latency-free, drift-free accuracy is mandatory.
Availability
LTC2401CMS#TRPBF is available at Aetrix Electronics and suitable for weight scales, strain gauge transducers, and gas analyzers requiring stable component supply, long-term calibration integrity, and industrial-grade EMI immunity.
Supply support for LTC2401CMS#TRPBF 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
Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2401CMS#TRPBF belongs to ADI's legacy Linear Technology precision ADC portfolio, designed specifically for ultra-stable, low-power, high-resolution measurement in demanding instrumentation and process control applications.
FAQ
What is the maximum recommended reference voltage for LTC2401CMS#TRPBF?
The LTC2401CMS#TRPBF supports reference voltages from 0.1V to VCC. For optimal INL performance and noise trade-off, Analog Devices recommends using 2.5V or 5V references. With VCC = 5.5V, the maximum usable VREF is 5.5V; however, exceeding 5V may reduce effective resolution due to increased thermal noise contribution relative to full-scale range.
Does LTC2401CMS#TRPBF require external passive components for oscillator operation?
No, the LTC2401CMS#TRPBF integrates a precision internal oscillator and requires no external crystals, capacitors, or resistors for basic operation. The FO pin selects 50Hz (FO = VCC) or 60Hz (FO = GND) notch frequencies. External clocking (2.56–307.2kHz) is optional and only needed for custom rejection frequencies outside 50/60Hz.
How does the extended input range of LTC2401CMS#TRPBF improve system design?
The LTC2401CMS#TRPBF supports an input range of –12.5% to +112.5% VREF, allowing it to digitize signals beyond traditional 0–VREF bounds. This accommodates amplifier offset errors, sensor zero-shift, and transient overrange events without saturation or firmware compensation-reducing calibration overhead and improving field reliability.
Can LTC2401CMS#TRPBF interface directly with a standard SPI microcontroller?
Yes, the LTC2401CMS#TRPBF supports SPI and MICROWIRE protocols via its 3-wire interface (CS, SCK, SDO). In internal-clock mode, SCK acts as output (19.2kHz); in external-clock mode, SCK becomes input-enabling direct connection to MCU SPI peripherals without level-shifting or protocol translation.
What is the significance of "no latency" in LTC2401CMS#TRPBF's delta-sigma architecture?
"No latency" means the LTC2401CMS#TRPBF's digital filter settles in exactly one conversion cycle-unlike conventional ∆Σ ADCs requiring multiple cycles to stabilize. This guarantees deterministic timing: each 32-bit output corresponds precisely to the immediately preceding analog sample, enabling synchronized multi-channel sampling and real-time control loops.
LTC2401CMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- microPOWER™
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 24
- Sampling Rate (Per Second):
- 7.5
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- 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:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2401CMS#TRPBF FAQ
1.How can I place an order for LTC2401CMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2401CMS#TRPBF 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 LTC2401CMS#TRPBF reliable?
The price and inventory of LTC2401CMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2401CMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2401CMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2401CMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2401CMS#TRPBF?
LTC2401CMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2401CMS#TRPBF 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 LTC2401CMS#TRPBF?
For technical support, including LTC2401CMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2401CMS#TRPBF requirements.
6.How does Aetrix verify that LTC2401CMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2401CMS#TRPBF 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 LTC2401CMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2401CMS#TRPBF?
All LTC2401CMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2401CMS#TRPBF, 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 LTC2401CMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2401CMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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