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Analog Devices Inc. LTC2482CDD#TRPBF
- Part No.:
- LTC2482CDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC2482CDD#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,158
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Product details
Overview
LTC2482CDD#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit + sign delta-sigma analog-to-digital converter with Easy Drive input current cancellation, rail-to-rail input capability (GND to VCC), and integrated oscillator. It delivers 600nV RMS noise, 2ppm INL, 1ppm offset error, and simultaneous 50Hz/60Hz line rejection - enabling direct digitization of high-impedance sensors in precision instrumentation.
For engineers reviewing the LTC2482CDD#TRPBF datasheet, LTC2482CDD#TRPBF pinout, LTC2482CDD#TRPBF application, or LTC2482CDD#TRPBF equivalent, key selection criteria include its zero-differential-input-current architecture, 100mV–VCC reference range, no-latency digital filter settling, and 10-lead DFN (3mm × 3mm) package compatibility with LTC2480/LTC2484.
Technical Context
The LTC2482CDD#TRPBF employs a third-order ΔΣ modulator with patented Easy Drive sampling that cancels differential input current dynamically, eliminating errors from external source impedance up to 100kΩ. Its auto-calibrating architecture continuously corrects offset and full-scale drift without interrupting conversion.
It supports dual clock modes: internal 307.2kHz oscillator (enabling 87dB 50Hz/60Hz rejection) or external fO-driven operation (supporting fEOSC = 10–4000kHz for customizable notch frequencies). The 24-bit serial output includes EOC, sign, MSB, and over/underrange flags - all synchronized via 3-wire SPI-compatible interface.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit + sign, no missing codes - guarantees monotonicity and unambiguous full-scale transitions. |
| Input Noise | 600nV RMS independent of VREF - enables stable 16-bit accuracy even with low-reference designs (e.g., 100mV). |
| INL | 2ppm of VREF - ensures <0.0002% linearity error across full input range, critical for metrology-grade measurements. |
| Offset Error | ±0.5μV typical - eliminates need for system-level offset trimming in high-precision sensor front ends. |
| Common Mode Range | GND to VCC - allows direct interfacing with rail-to-rail industrial sensors without level-shifting circuitry. |
| Power Supply | 2.7V to 5.5V single supply - supports battery-powered and wide-input industrial systems. |
| Reference Range | 0.1V to VCC - permits ultra-low-voltage references for micro-power applications while retaining 16-bit resolution. |
| Conversion Time | 147ms (internal oscillator, 50/60Hz rejection mode) - sets deterministic update rate for synchronous line-noise rejection. |
Pinout & Package
Package: 10-lead (3mm × 3mm) plastic DFN with exposed pad (Pin 11 = GND, must be soldered to PCB ground plane).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pin 1) | Digital/analog ground reference | Pin-compatible with LTC2480/LTC2484; may be driven high/low but recommended tied to ground. |
| VCC (Pin 2) | Positive supply input | Requires local bypass: 1μF tantalum || 0.1μF ceramic - critical for noise-sensitive ADC performance. |
| VREF (Pin 3) | Positive reference input | Accepts 0.1V–VCC; negative reference is GND (Pin 8) - enables flexible low-voltage or ratiometric sensing. |
| IN+ / IN– (Pins 4, 5) | Differential analog inputs | Rail-to-rail common-mode (GND–0.3V to VCC+0.3V); differential range = ±0.5×VREF - supports direct strain gauge or thermocouple connection. |
| CS (Pin 6) | Active-low chip select | Wakes device from sleep; aborts data transfer if pulled high mid-read - enables low-power polling or interrupt-driven reads. |
| SDO (Pin 7) | 3-state serial data output | Outputs 24-bit frame (EOC, DMY, SIG, MSB, 16-bit result, 4 zeros); high-Z when CS = high - prevents bus contention. |
| GND (Pin 8) | Shared analog/digital/reference ground | Must connect directly to low-impedance ground plane - separates noisy digital return from sensitive analog reference path. |
| SCK (Pin 9) | Bidirectional serial clock | Auto-configures as output (internal SCK mode) or input (external SCK mode) based on power-up state - simplifies firmware flexibility. |
| fO (Pin 10) | Frequency control input | GND = internal 307.2kHz oscillator; external clock ≥10kHz overrides - selects between fixed 50/60Hz rejection or custom notch frequency. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive Input Current Cancellation | Zero differential input current enables direct connection to high-impedance sensors (e.g., load cells, RTDs) without buffer amplifiers or matched RC networks. |
| No-Latency ΔΣ Architecture | Digital filter settles in one cycle - eliminates group delay uncertainty and supports real-time control loop timing predictability. |
| Simultaneous 50Hz/60Hz Rejection | 87dB normal-mode rejection at both frequencies using internal oscillator - meets IEC 61000-4-8 immunity requirements without external filtering. |
| Autocalibration Engine | Continuous transparent offset and full-scale calibration maintains absolute accuracy over temperature and time - no user intervention required. |
| Low-Power Sleep Mode | 1μA typical supply current when CS = high - reduces average power in intermittent-sampling applications like portable DVMs. |
| Flexible Reference Interface | VREF accepts 0.1V minimum - allows use of ultra-low-power references or direct VCC tie for ratiometric bridge measurements. |
Applications
| Weight Scales | Industrial Process Control |
|---|---|
|
Use Scenario: High-resolution weighing of industrial loads using 4-wire strain gauge bridges with millivolt-level outputs. IC Role / Device Role / Timing Role: Direct sensor digitizer with rail-to-rail input and 600nV RMS noise - captures sub-microvolt bridge imbalances without gain stages. Use Value: Eliminates instrumentation amplifier and external reference, reducing BOM cost and board space while maintaining 2ppm INL linearity. |
Use Scenario: Monitoring pressure, flow, or temperature transmitters in factory automation systems with 4–20mA loop integration. IC Role / Device Role / Timing Role: Precision ADC front end with GND-to-VCC common mode range - interfaces directly with isolated analog outputs without level shifters. Use Value: Enables single-supply 3.3V or 5V designs with 16-bit resolution and simultaneous 50Hz/60Hz rejection - improves immunity in electrically noisy plants. |
| Direct Temperature Measurement | DVMs and Meters |
|
Use Scenario: Cold-junction compensation and thermocouple voltage digitization in multi-channel temperature recorders. IC Role / Device Role / Timing Role: Low-drift, low-noise ADC with 1ppm offset and 100mV reference support - resolves μV-level thermocouple signals at ambient temperatures. Use Value: Removes need for external cold-junction sensor and amplifier, simplifying calibration and improving long-term stability. |
Use Scenario: Portable handheld digital multimeters requiring high DC accuracy, low power, and compact form factor. IC Role / Device Role / Timing Role: Core measurement engine with 16-bit resolution, no missing codes, and 1μA sleep current - extends battery life while ensuring metrology-grade readings. Use Value: Achieves 6½-digit-equivalent DC accuracy (0.0015% of reading) using internal autocalibration - avoids costly external calibration hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPWR | 24-bit resolution, integrated PGA (1–128×), lower noise (150nV RMS), but requires external reference and lacks Easy Drive cancellation. | Preferred for ultra-low-level signals needing programmable gain; unsuitable for direct high-Z sensor connection without external buffers. | Select when higher resolution and gain flexibility outweigh simplicity and zero-input-current advantage. |
| LTC2480CDD#TRPBF | Same pinout, identical architecture, but 20-bit resolution and slower conversion (294ms @ 50/60Hz rejection); shares same DFN package and register map. | Used where higher resolution justifies doubled conversion time and increased power per sample - e.g., laboratory-grade DMMs. | Choose for backward-compatible upgrade path when 20-bit accuracy is mandatory and latency is acceptable. |
Compared with ADS124S08IPWR, LTC2482CDD#TRPBF offers simpler signal chain integration for high-impedance sensors but trades off resolution and noise floor; versus LTC2480CDD#TRPBF, it provides faster updates and lower power at 16-bit precision - ideal for responsive industrial monitoring.
Availability
LTC2482CDD#TRPBF is available at Aetrix Electronics and suitable for weight scales, industrial process controllers, and portable DVMs requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for LTC2482CDD#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2482CDD#TRPBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for direct sensor digitization in metrology, instrumentation, and industrial control - emphasizing ease of use, zero-input-current architecture, and robust line-frequency rejection.
FAQ
What is the operating temperature range for the LTC2482CDD#TRPBF?
The LTC2482CDD#TRPBF is specified for 0°C to 70°C ambient operation (Commercial grade). This range is confirmed in the Absolute Maximum Ratings table and Electrical Characteristics section of the official datasheet, with all key parameters - including INL, offset error, and noise - guaranteed across this interval.
Does the LTC2482CDD#TRPBF require an external crystal or oscillator?
No, the LTC2482CDD#TRPBF includes a trimmed on-chip oscillator operating at 307.2kHz, eliminating external timing components. When Pin fO is grounded, the device uses this internal clock to achieve simultaneous 50Hz/60Hz rejection - no crystal, capacitor, or external oscillator is needed for basic operation.
How does the Easy Drive technology in the LTC2482CDD#TRPBF improve sensor interfacing?
Easy Drive technology in the LTC2482CDD#TRPBF automatically cancels differential input current during sampling, enabling true rail-to-rail input (GND to VCC) with zero net current draw from IN+ and IN–. This allows direct connection to high-impedance sensors like strain gauges or thermocouples without buffer amplifiers or matched RC networks - preserving DC accuracy and simplifying layout.
What is the function of the fO pin on the LTC2482CDD#TRPBF?
The fO pin on the LTC2482CDD#TRPBF selects the conversion clock source: grounding fO activates the internal 307.2kHz oscillator for standard 50Hz/60Hz rejection; applying an external clock (≥10kHz) overrides the internal oscillator to enable custom notch frequencies (e.g., fEOSC/5120) or synchronization with system clocks - all without configuration registers.
Can the LTC2482CDD#TRPBF operate with a 100mV reference voltage?
Yes, the LTC2482CDD#TRPBF supports VREF as low as 100mV while maintaining full 16-bit resolution and no missing codes. This is explicitly stated in the Features list and verified in the Electrical Characteristics table under "Resolution" and "Total Unadjusted Error" conditions - enabling ultra-low-power sensor systems with minimal reference overhead.
LTC2482CDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-DFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2482CDD#TRPBF FAQ
1.How can I place an order for LTC2482CDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2482CDD#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 LTC2482CDD#TRPBF reliable?
The price and inventory of LTC2482CDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2482CDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2482CDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2482CDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2482CDD#TRPBF?
LTC2482CDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2482CDD#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 LTC2482CDD#TRPBF?
For technical support, including LTC2482CDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2482CDD#TRPBF requirements.
6.How does Aetrix verify that LTC2482CDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2482CDD#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 LTC2482CDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2482CDD#TRPBF?
All LTC2482CDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2482CDD#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 LTC2482CDD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2482CDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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