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Analog Devices Inc. LTC2483IDD#PBF
- Part No.:
- LTC2483IDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC2483IDD#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,686
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Product details
Overview
LTC2483IDD#PBF from Analog Devices (formerly Linear Technology) is a 16-bit plus sign delta-sigma analog-to-digital converter with patented Easy Drive input current cancellation, I²C interface, and internal oscillator. It delivers 600 nVRMS noise independent of reference voltage, ±2 ppm INL, and simultaneous 50 Hz/60 Hz line rejection - enabling direct digitization of high-impedance sensors in industrial instrumentation and precision weighing systems.
For engineers reviewing the LTC2483IDD#PBF datasheet, LTC2483IDD#PBF pinout, LTC2483IDD#PBF application, or LTC2483IDD#PBF equivalent, key selection criteria include rail-to-rail input common-mode range (GND to VCC), zero differential input current, 24-bit output format with sign bit, six configurable I²C addresses, and –40°C to +85°C operating temperature grade.
Technical Context
The LTC2483IDD#PBF implements a third-order delta-sigma modulator with transparent auto-calibration for offset and full-scale, eliminating drift without user intervention. Its Easy Drive architecture cancels differential input current via passive sampling network, enabling direct connection to strain gauges and thermistors without external amplifiers or buffers.
It uses an on-chip trimmed oscillator (no external crystal required) to achieve 87 dB simultaneous 50 Hz/60 Hz rejection, and supports external clock input (10–4000 kHz) on CA0/F0 for custom filter null placement. The I²C interface operates up to 400 kHz in fast mode and outputs 24-bit data (16-bit + sign + status bits) on falling SCL edges.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit plus sign, no missing codes - guarantees monotonicity and unambiguous digital representation across full input range. |
| INL | ±2 ppm of VREF (0.25 LSB max) - ensures high linearity for precision measurement applications like DVMs and process control. |
| Output Noise | 600 nVRMS, independent of VREF - enables accurate low-level signal digitization even with 100 mV references. |
| Input Common-Mode Range | GND to VCC - allows direct interfacing with rail-to-rail sensors and eliminates level-shifting circuitry. |
| Supply Voltage | 2.7 V to 5.5 V - supports battery-powered and industrial 3.3 V/5 V systems without regulation overhead. |
| I²C Address Options | 6 unique addresses via CA0/F0 and CA1 pins - simplifies multi-device bus design without address conflicts. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and automotive under-hood environments. |
Pinout & Package
Package: 10-lead (3 mm × 3 mm) plastic DFN with exposed pad (Pin 11 = GND, must be soldered to PCB). Thermal resistance θJA = 43°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF+ (Pin 1) | Differential reference positive input | Accepts voltage from GND to VCC; sets full-scale range with REF– (FS = 0.5 × VREF). |
| VCC (Pin 2) | Positive supply | 2.7 V to 5.5 V operation; requires local 1 µF tantalum + 0.1 µF ceramic bypass to GND. |
| REF– (Pin 3) | Differential reference negative input | Must be ≥0.1 V below REF+; defines reference common-mode and enables GND-to-VCC input range. |
| IN+ (Pin 4), IN– (Pin 5) | Differential analog inputs | Zero differential input current (Easy Drive); support rail-to-rail common-mode (GND to VCC) and ±0.5×VREF differential range. |
| SCL (Pin 6) | I²C serial clock input | Slave-only interface; accepts up to 400 kHz clock; data latched on rising edge. |
| SDA (Pin 7) | I²C bidirectional data line | Open-drain output during read; requires external pull-up; transmits 24-bit result (sign + 16-bit + status + padding). |
| GND (Pin 8) | Analog/digital ground | Low-impedance connection to PCB ground plane; exposed pad (Pin 11) is electrically tied to this pin. |
| CA1 (Pin 9) | I²C address control / three-state input | Configures one bit of 7-bit slave address as LOW, HIGH, or floating (three states). |
| CA0/F0 (Pin 10) | I²C address control or external clock input | Two-state address bit when static; accepts 10–4000 kHz external clock to override internal oscillator and shift filter null. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive™ input current cancellation | Eliminates differential input current errors, enabling direct connection to high-impedance sources (e.g., 100 kΩ strain gauges) without buffer amplifiers. |
| No latency digital filter | Settles in single conversion cycle - provides immediate valid output after read completion, critical for responsive sensor polling. |
| Simultaneous 50 Hz/60 Hz rejection | 87 dB rejection at both frequencies using internal oscillator - removes mains interference without external notch filters or software averaging. |
| Internal trimmed oscillator | Removes need for external crystal or clock source - reduces BOM count and board space in compact designs. |
| Auto-calibration architecture | Continuous transparent offset and full-scale calibration - maintains absolute accuracy over time and temperature without user-triggered recalibration. |
| Wide reference voltage range | 0.1 V to VCC - supports low-voltage sensor interfaces (e.g., 100 mV thermopile outputs) while preserving 16-bit resolution. |
Applications
| Weight Scales | Industrial Process Control |
|---|---|
Use Scenario: High-precision load cell readout in platform scales and hopper systems requiring <10 µV resolution and long-term stability. IC Role / Device Role / Timing Role: Direct sensor digitizer with integrated Easy Drive front-end; converts mV-level bridge outputs without signal conditioning. Use Value: Eliminates external instrumentation amplifier and reference buffer, reducing component count and thermal drift errors while maintaining ±2 ppm INL. |
Use Scenario: Analog input module for PLCs monitoring pressure, flow, or level transmitters in factory automation. IC Role / Device Role / Timing Role: Precision ADC with I²C interface for distributed sensor nodes; operates across –40°C to +85°C ambient. Use Value: GND-to-VCC input range accommodates 4–20 mA loop-powered sensors via simple resistor conversion; 600 nVRMS noise ensures sub-LSB repeatability. |
| Direct Temperature Measurement | Strain Gauge Transducers |
Use Scenario: High-accuracy thermistor or RTD readout in medical devices and environmental monitors where self-heating must be minimized. IC Role / Device Role / Timing Role: Low-power ADC with sleep mode (1 µA) and automatic calibration; interfaces directly to 10 kΩ NTC thermistors. Use Value: Zero differential input current prevents thermistor self-heating error; 16-bit resolution enables 0.01°C resolution over 0–100°C range. |
Use Scenario: Full-bridge strain gauge measurements in structural health monitoring and torque sensing applications. IC Role / Device Role / Timing Role: Differential ADC with rail-to-rail common-mode input; rejects common-mode noise from long cable runs. Use Value: 140 dB input common-mode rejection (DC, 50/60 Hz) suppresses EMI from motors and drives; 600 nVRMS noise resolves microstrain-level signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS124S08IPW | 24-bit resolution, SPI interface, integrated PGA and burn-out current sources; no built-in 50/60 Hz rejection. | Requires external digital filtering or oversampling for line-frequency rejection; better suited for multiplexed multi-channel systems. | Select when higher resolution and programmable gain are needed, and I²C is not required. |
| MAX11206ETL+ | 24-bit resolution, SPI interface, 50/60 Hz rejection via digital filter; no Easy Drive input architecture. | Requires external op-amp buffering for high-impedance sensors due to non-zero input bias current. | Select when SPI interface and lower power (350 nA sleep) are prioritized over direct high-Z sensor interface. |
Compared with ADS124S08IPW and MAX11206ETL+, the LTC2483IDD#PBF uniquely combines I²C simplicity, zero differential input current, and hardware-based simultaneous 50/60 Hz rejection - making it optimal for space-constrained, single-sensor industrial nodes where analog front-end minimization is critical.
Availability
LTC2483IDD#PBF is available at Aetrix Electronics and suitable for industrial process control, precision weighing systems, and direct temperature measurement requiring stable component supply across extended temperature ranges.
Supply support for LTC2483IDD#PBF 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 LTC2483IDD#PBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for direct sensor digitization in low-power, high-accuracy measurement systems where ease of use and minimal external components are essential.
FAQ
What is the operating temperature range of the LTC2483IDD#PBF?
The LTC2483IDD#PBF is rated for –40°C to +85°C operation, making it suitable for industrial environments including factory floors and outdoor equipment enclosures. This grade is confirmed by the "I" suffix in the part number and validated across all electrical specifications in the datasheet, including INL, offset drift, and noise performance.
Does the LTC2483IDD#PBF require an external crystal or oscillator?
No, the LTC2483IDD#PBF includes an on-chip trimmed oscillator that eliminates the need for external timing components. It achieves 87 dB simultaneous 50 Hz/60 Hz rejection using this internal clock. An external clock (10–4000 kHz) may be applied to CA0/F0 only if custom filter null placement is required - but it is not mandatory for standard operation.
How does Easy Drive technology benefit sensor interfacing in the LTC2483IDD#PBF?
Easy Drive technology in the LTC2483IDD#PBF cancels differential input current through a patented passive sampling scheme, resulting in effectively zero differential input current. This allows direct connection to high-impedance sensors like strain gauges and thermistors without external amplifiers or buffers - preserving signal integrity and eliminating associated drift and noise sources.
What is the meaning of the "#PBF" suffix in LTC2483IDD#PBF?
The "#PBF" suffix indicates lead-free (Pb-free) finish and tape-and-reel packaging per JEDEC standards. It confirms RoHS compliance and suitability for automated SMT assembly. The "IDD" portion denotes the industrial temperature grade (–40°C to +85°C) and 10-lead DFN package - identical in form, fit, and function to the lead-based LTC2483IDD variant.
Can the LTC2483IDD#PBF interface directly with a 100 mV reference voltage?
Yes, the LTC2483IDD#PBF supports reference voltages as low as 100 mV (0.1 V), and its 600 nVRMS noise is independent of VREF. This enables full 16-bit effective resolution even with low-voltage references - ideal for interfacing with low-output sensors such as thermopiles or micro-power bridges without gain stages.
LTC2483IDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 6.8
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- I2C
- 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:
- Selectable Address
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-DFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2483IDD#PBF FAQ
1.How can I place an order for LTC2483IDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2483IDD#PBF 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 LTC2483IDD#PBF reliable?
The price and inventory of LTC2483IDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2483IDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2483IDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2483IDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2483IDD#PBF?
LTC2483IDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2483IDD#PBF 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 LTC2483IDD#PBF?
For technical support, including LTC2483IDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2483IDD#PBF requirements.
6.How does Aetrix verify that LTC2483IDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2483IDD#PBF 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 LTC2483IDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2483IDD#PBF?
All LTC2483IDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2483IDD#PBF, 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 LTC2483IDD#PBF part is unused and in its original packaging.
Return procedure for LTC2483IDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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