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Analog Devices Inc. LTC2433-1IMS#TRPBF
- Part No.:
- LTC2433-1IMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2433-1IMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,276
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Product details
Overview
LTC2433-1IMS#TRPBF from Analog Devices (formerly Linear Technology) is a micropower 16-bit differential ΔΣ analog-to-digital converter with integrated oscillator, 0.12LSB INL, 1.45µV RMS noise independent of VREF, and simultaneous 50Hz/60Hz notch rejection - used in precision weight scales, strain-gage transducers, and direct temperature measurement systems.
For engineers reviewing the LTC2433-1IMS#TRPBF datasheet, LTC2433-1IMS#TRPBF pinout, LTC2433-1IMS#TRPBF application, or LTC2433-1IMS#TRPBF equivalent, this page delivers verified technical context, real-world design meaning for key specs, validated 10-lead MSOP pin functions, and two confirmed alternative ADCs with documented functional and application differences.
Technical Context
The LTC2433-1IMS#TRPBF implements a no-latency delta-sigma architecture with on-chip decimating FIR filter and auto-calibrating DAC, enabling single-conversion settling without filter delay. Its internal oscillator eliminates external timing components while delivering ≥87dB normal-mode rejection across 49–61.2Hz.
It supports dual clock modes: FO = GND enables internal 139.8kHz oscillator for fixed 50/60Hz rejection; FO driven externally accepts 2.56–2000kHz signals to set user-defined notch frequency at fEOSC/2560 ±4% with ≥110dB rejection. Reference and input common-mode voltages are independently rail-to-rail (GND to VCC), supporting remote sensing and ratiometric configurations.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage over full input range. |
| INL | 0.12LSB max - ensures high linearity for precision sensor digitization without calibration correction. |
| Noise | 1.45µV RMS, independent of VREF - enables consistent low-noise performance even at 100mV reference. |
| Supply Current | 200µA active, 4µA autosleep - supports battery-powered instrumentation with ultra-low quiescent power. |
| Input Range | ±0.5 × VREF, VREF = 0.1V to VCC - allows flexible ratiometric measurements and sub-100mV signal resolution. |
| CMRR | >140dB DC - rejects common-mode interference in noisy industrial environments. |
| Notch Rejection | ≥87dB simultaneous 50Hz/60Hz - eliminates mains hum without external filtering or software post-processing. |
Pinout & Package
Package: 10-lead MSOP (3mm × 3mm), moisture sensitivity level 1, RoHS-compliant, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VCC (Pin 1) | Positive supply input | Accepts 2.7V–5.5V; requires local 10µF tantalum + 0.1µF ceramic bypass for stable conversion. |
| REF+ / REF– (Pins 2, 3) | Differential reference inputs | Support 0.1V–VCC differential range; common-mode voltage independently set from GND to VCC. |
| IN+ / IN– (Pins 4, 5) | Differential analog inputs | Bipolar input range = ±0.5 × VREF; absolute voltage range extends to GND–0.3V and VCC+0.3V. |
| GND (Pin 6) | Analog/digital ground | Low-impedance connection required to minimize noise coupling into sensitive analog front-end. |
| CS (Pin 7) | Active-low chip select | Wakes device from 4µA sleep; controls data output enable and aborts transfer if raised mid-read. |
| SDO (Pin 8) | 3-state serial data output | Outputs 19-bit frame (3 status + 16 data bits); tri-states when CS = HIGH to prevent bus contention. |
| SCK (Pin 9) | Bidirectional serial clock | Auto-configures as input (external SCK mode) or output (internal SCK mode) based on logic state at power-up or CS edge. |
| FO (Pin 10) | Frequency control input | Selects internal oscillator (FO = GND) or external clock source (2.56–2000kHz) for programmable notch frequency. |
Key Features
| Feature | Design Value |
|---|---|
| No latency ΔΣ conversion | Single-cycle digital filter settling - output corresponds directly to latest conversion with zero pipeline delay. |
| Autocalibration per cycle | Continuous offset and full-scale correction - eliminates drift-induced errors over time, temperature, and supply variation. |
| Rail-to-rail reference & input CM range | Independent GND-to-VCC common-mode setting for REF and IN pins - enables true isolated sensor interfacing and wide-supply designs. |
| Flexible 3-wire SPI/MICROWIRE interface | No configuration registers needed - mode selection via CS/SCK/FO pin states only; compatible with legacy microcontrollers. |
| 100mV minimum reference support | 16-bit resolution maintained down to 0.1V VREF - improves effective resolution for low-level sensor outputs (e.g., thermocouples, microvolt strain signals). |
Applications
| Weight Scales | Strain-Gage Transducers |
|---|---|
Use Scenario: High-accuracy digital weighing systems measuring load cells with mV/V output under varying ambient conditions. IC Role / Device Role / Timing Role: Direct sensor digitizer with integrated 50/60Hz rejection and auto-calibration - replaces external op-amp, filter, and reference circuits. Use Value: Eliminates mains hum interference and long-term drift without firmware compensation, enabling Class III legal-for-trade accuracy. | Use Scenario: Industrial force and pressure sensors using Wheatstone bridge configurations with low differential output (<50mV). IC Role / Device Role / Timing Role: Micropower 16-bit ADC with rail-to-rail input common-mode range - interfaces directly to unbuffered bridge outputs referenced to non-ground potentials. Use Value: Supports ratiometric measurement with bridge excitation voltage as VREF, preserving accuracy despite supply fluctuations. |
| Direct Temperature Measurement | Gas Analyzers |
Use Scenario: Precision RTD or thermocouple readouts requiring <1µV noise floor and stable offset over –40°C to +85°C. IC Role / Device Role / Timing Role: Low-drift ADC with 1.45µV RMS noise independent of VREF - digitizes µV-level thermal EMFs without gain-stage amplification. Use Value: Reduces system BOM by eliminating chopper-stabilized op-amps and external reference buffers while maintaining 0.01°C resolution. | Use Scenario: Electrochemical gas sensors producing low-amplitude, high-impedance current outputs converted to voltage via precision transimpedance amplifier. IC Role / Device Role / Timing Role: Differential ADC with >140dB DC common-mode rejection - rejects PCB-level leakage currents and EMI-induced offsets in sensor signal chain. Use Value: Enables stable baseline readings in portable analyzers powered from shared battery rails with switching regulators. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit micropower delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPW | 24-bit resolution, integrated PGA (1–128×), lower noise (0.7µV RMS), but higher supply current (350µA active). | Targeted at higher-resolution sensor nodes where gain flexibility and lower noise outweigh power budget constraints. | Select ADS124S08IPW when system requires programmable gain and >16-bit resolution; LTC2433-1IMS#TRPBF remains optimal for ultra-low-power, fixed-gain, cost-sensitive 16-bit applications. |
| MAX11200EEE+ | 18-bit resolution, 1.2µV RMS noise, 250µA active current, no integrated oscillator - requires external clock or crystal. | Suitable for space-constrained designs needing higher resolution but accepting added BOM complexity for timing components. | Choose MAX11200EEE+ when 18-bit performance justifies external oscillator integration; LTC2433-1IMS#TRPBF offers simpler layout and guaranteed 50/60Hz rejection without external parts. |
Compared with ADS124S08IPW and MAX11200EEE+, the LTC2433-1IMS#TRPBF uniquely combines 16-bit precision, 4µA autosleep, integrated oscillator, and simultaneous 50/60Hz rejection in a 10-lead MSOP - making it the most integrated solution for battery-powered, mains-immune sensor digitization where 16-bit resolution suffices.
Availability
LTC2433-1IMS#TRPBF is available at Aetrix Electronics and suitable for weight scales, industrial process control, and portable instrumentation requiring stable component supply, long-lifecycle availability, and guaranteed parametric compliance.
Supply support for LTC2433-1IMS#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 LTC2433-1IMS#TRPBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy sensor digitization in harsh electrical environments - emphasizing integrated noise rejection, rail-to-rail flexibility, and autonomous calibration.
FAQ
What is the minimum reference voltage supported by the LTC2433-1IMS#TRPBF?
The LTC2433-1IMS#TRPBF supports a differential reference voltage as low as 0.1V (100mV) while maintaining full 16-bit resolution and no missing codes. At this minimum VREF, quantization step size is 1.5µV/LSB, and the 1.45µV RMS noise remains constant - enabling effective resolution better than 16 bits for small-signal measurements. This capability is confirmed in the Electrical Characteristics table (VREF min = 0.1V) and Applications Information section.
Does the LTC2433-1IMS#TRPBF require external passive components for its internal oscillator?
No, the LTC2433-1IMS#TRPBF does not require any external passive components for its internal oscillator. The datasheet explicitly states "Internal Oscillator-No External Components Required" and confirms that connecting FO to GND activates the on-chip oscillator, which operates at ~139.8kHz to deliver simultaneous 50Hz/60Hz rejection. This eliminates crystals, capacitors, or resistors traditionally needed for timing stability in precision ADCs.
How does the LTC2433-1IMS#TRPBF achieve simultaneous 50Hz and 60Hz rejection?
The LTC2433-1IMS#TRPBF achieves simultaneous 50Hz and 60Hz rejection through its fixed-frequency internal oscillator (139.8kHz) driving a decimating FIR filter tuned to provide ≥87dB attenuation across 49–61.2Hz. When FO is tied to GND, the digital filter's notch response spans both frequencies inherently - no software configuration or external circuitry is needed. This behavior is measured and specified in the "Input Normal Mode Rejection" table (87dB min, 49Hz to 61.2Hz).
What is the function of the FO pin on the LTC2433-1IMS#TRPBF?
The FO (Frequency Oscillator) pin on the LTC2433-1IMS#TRPBF selects the conversion clock source: grounding FO enables the internal oscillator for fixed 50/60Hz rejection; applying an external clock (2.56–2000kHz) configures programmable notch frequency at fEOSC/2560 ±4%. The device auto-detects the presence of an external signal and disables the internal oscillator - ensuring seamless transition between modes without register writes or reset sequences.
Is the LTC2433-1IMS#TRPBF pin-compatible with other members of the LTC24xx family?
Yes, the LTC2433-1IMS#TRPBF is pin-compatible with the LTC2431 and LTC2411 in the same 10-lead MSOP package, as stated in the Features list ("Pin Compatible with the 20/24-Bit LTC2431/LTC2411"). This allows drop-in replacement in existing layouts when upgrading from higher-resolution variants or migrating to lower-power 16-bit operation - provided system firmware accommodates the 19-bit output format and timing differences.
LTC2433-1IMS#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:
- 16
- Sampling Rate (Per Second):
- 6.8
- Number of Inputs:
- 1
- Input Type:
- Differential
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2433-1IMS#TRPBF FAQ
1.How can I place an order for LTC2433-1IMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2433-1IMS#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 LTC2433-1IMS#TRPBF reliable?
The price and inventory of LTC2433-1IMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2433-1IMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2433-1IMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2433-1IMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2433-1IMS#TRPBF?
LTC2433-1IMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2433-1IMS#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 LTC2433-1IMS#TRPBF?
For technical support, including LTC2433-1IMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2433-1IMS#TRPBF requirements.
6.How does Aetrix verify that LTC2433-1IMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2433-1IMS#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 LTC2433-1IMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2433-1IMS#TRPBF?
All LTC2433-1IMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2433-1IMS#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 LTC2433-1IMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2433-1IMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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