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Analog Devices Inc. LTC2483CDD#PBF
- Part No.:
- LTC2483CDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC2483CDD#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:484
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Product details
Overview
LTC2483CDD#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 rail-to-rail, high-impedance sensor signals in industrial instrumentation and precision weighing systems.
For engineers reviewing the LTC2483CDD#PBF datasheet, LTC2483CDD#PBF pinout, LTC2483CDD#PBF application, or LTC2483CDD#PBF equivalent, key selection criteria include differential input current cancellation capability, GND-to-VCC common-mode input range, 24-bit I²C output format with sign/MSB status bits, and six configurable I²C addresses for multi-device bus operation.
Technical Context
The LTC2483CDD#PBF employs 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 sensors with source impedances up to 100 kΩ while maintaining DC accuracy.
It uses an on-chip trimmed oscillator (no external crystal required) to achieve 87 dB simultaneous 50 Hz/60 Hz rejection. The 24-bit output includes sign bit, MSB, 16-bit two's complement result, and six trailing zeros - with dedicated status bits indicating overrange (+FS), underrange (–FS), or valid conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit + sign, no missing codes - guarantees monotonicity and unambiguous digital representation across full input range. |
| INL | 2 ppm (0.25 LSB) - ensures <±0.00005% linearity error for high-accuracy measurement applications like strain gauge transducers. |
| Output Noise | 600 nVRMS, independent of VREF - enables consistent low-noise performance even with 100 mV references or VREF = VCC. |
| Input Common-Mode Range | GND to VCC - allows direct digitization of signals referenced to ground or supply rails without level-shifting circuitry. |
| I²C Interface | 2-wire, up to 400 kHz, 6 selectable addresses - supports multi-node sensor networks on shared buses with minimal GPIO overhead. |
| Supply Voltage | 2.7 V to 5.5 V - compatible with both 3.3 V and 5 V industrial control systems and battery-powered portable instruments. |
| Conversion Current | 160 µA typical - enables low-power operation in always-on sensor nodes while maintaining 16-bit precision. |
Pinout & Package
Package: 10-lead (3 mm × 3 mm) plastic DFN with exposed pad (Pin 11), rated for 0°C to 70°C operating temperature.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REF+ / REF– | Differential reference inputs | Accept 0.1 V to VCC reference span; enable rail-to-rail input digitization regardless of reference level. |
| IN+ / IN– | Differential analog inputs | Support –0.3 V to VCC + 0.3 V absolute range; zero differential input current enables direct high-Z sensor interface. |
| VCC / GND | Power supply and ground | VCC requires 1 µF tantalum + 0.1 µF ceramic bypass; exposed pad must be soldered to PCB ground plane for thermal and electrical integrity. |
| SCL / SDA | I²C clock and bidirectional data | SCL is input-only; SDA is open-drain output requiring external pull-up - supports standard/fast-mode I²C up to 400 kHz. |
| CA1 / CA0/F0 | I²C address configuration / external clock input | Three-state logic (LOW/HIGH/floating) sets 6 unique addresses; CA0/F0 accepts external 10–4000 kHz clock for custom filter null placement. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive™ input current cancellation | Eliminates dynamic differential input current errors, enabling direct connection to high-impedance bridges and thermistors without buffer amplifiers. |
| No latency digital filter | Settles in single conversion cycle - provides immediate valid output after read command, critical for responsive closed-loop control. |
| 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, board space, and layout sensitivity in compact designs. |
| Auto-calibration | Continuous transparent offset and full-scale calibration - maintains absolute accuracy over time and temperature without user intervention. |
Applications
| Weight Scales | Strain Gauge Transducers |
|---|---|
|
Use Scenario: High-resolution load cell measurement in platform scales and industrial weigh hoppers. IC Role / Device Role / Timing Role: Direct digitizer of millivolt-level bridge outputs with 16-bit resolution and 600 nVRMS noise floor. Use Value: Eliminates signal conditioning amplifiers and external reference buffers, reducing component count and thermal drift sources. |
Use Scenario: Precision force and pressure sensing in test equipment and structural monitoring. IC Role / Device Role / Timing Role: Delta-sigma ADC with rail-to-rail input and GND-to-VCC common-mode range interfaces directly to unbuffered Wheatstone bridges. Use Value: Enables 2 ppm INL and 1 ppm offset error performance without trimming, supporting Class III/IV legal-for-trade metrology. |
| Direct Temperature Measurement | Industrial Process Control |
|
Use Scenario: RTD and thermistor digitization in HVAC controllers and environmental chambers. IC Role / Device Role / Timing Role: ADC with 0.1 V minimum reference voltage supports low-voltage excitation schemes for 2-/3-/4-wire RTDs. Use Value: GND-to-VCC input range allows direct connection to grounded-sensor configurations without level shifters or isolation. |
Use Scenario: Analog input module for PLCs and distributed I/O systems measuring 4–20 mA loops and process voltages. IC Role / Device Role / Timing Role: Low-power, I²C-compatible ADC with 1 µA sleep current and 6 address options for multi-channel sensor aggregation. Use Value: Reduces system power budget and simplifies firmware by offloading calibration and line-frequency rejection to hardware. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 16-bit, 860 SPS, no Easy Drive, requires external reference and op-amp buffering for high-Z sources | Lacks differential input current cancellation; unsuitable for direct high-impedance sensor interface without signal conditioning | Select when cost-sensitive designs tolerate added external components and lower line-rejection performance |
| MAX11613EEE+ | 16-bit, 100 kSPS SAR architecture, no auto-calibration, higher power (350 µA), no simultaneous 50/60 Hz rejection | Higher speed but inferior DC accuracy and noise; requires external anti-aliasing and reference buffers | Select only for applications prioritizing throughput over precision and line-noise immunity |
Compared with ADS1115IDGSR and MAX11613EEE+, the LTC2483CDD#PBF uniquely integrates Easy Drive cancellation, on-chip oscillator, and simultaneous 50/60 Hz rejection - delivering superior DC accuracy and simplified analog front-end design for low-speed, high-precision sensor digitization.
Availability
LTC2483CDD#PBF is available at Aetrix Electronics and suitable for industrial process control, precision weighing systems, and direct temperature measurement requiring stable component supply and long-term production continuity.
Supply support for LTC2483CDD#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC2483CDD#PBF belongs to Linear's precision delta-sigma ADC family, designed specifically for direct sensor digitization in industrial, instrumentation, and metrology applications where low noise, high linearity, and robustness against EMI are essential.
FAQ
What is the operating temperature range for the LTC2483CDD#PBF?
The LTC2483CDD#PBF is specified for 0°C to 70°C ambient operation, as indicated by the "C" grade suffix in its part number. This commercial-grade rating makes it suitable for indoor industrial controls, laboratory instruments, and consumer-grade test equipment where extended temperature ranges are not required. The device's internal auto-calibration maintains accuracy across this full range without external compensation.
Does the LTC2483CDD#PBF require an external crystal or oscillator?
No, the LTC2483CDD#PBF includes an on-chip trimmed oscillator that eliminates the need for external timing components. This internal oscillator enables 87 dB simultaneous 50 Hz/60 Hz line-frequency rejection and supports all standard conversion modes. An external clock (10–4000 kHz) may be applied to the CA0/F0 pin only if custom filter null placement is required - otherwise, the internal oscillator is used by default in the LTC2483CDD#PBF.
How does Easy Drive technology benefit sensor interfacing in the LTC2483CDD#PBF?
Easy Drive technology in the LTC2483CDD#PBF automatically cancels differential input current through a patented passive sampling scheme. This allows rail-to-rail input signals and high-impedance sources (e.g., load cells, RTDs, thermistors) to connect directly without external op-amps or buffers. As a result, the LTC2483CDD#PBF maintains 2 ppm INL and 1 ppm offset error even with 100 kΩ source impedances - significantly simplifying analog front-end design.
What is the function of the CA1 and CA0/F0 pins on the LTC2483CDD#PBF?
CA1 and CA0/F0 are three-state address configuration pins on the LTC2483CDD#PBF that set one of six unique I²C slave addresses. CA1 accepts LOW/HIGH/floating states; CA0/F0 accepts HIGH/floating (or driven by external clock). When used as address pins, they configure the device's 7-bit I²C address per Table 3 in the datasheet. When CA0/F0 receives a valid external clock signal, it overrides address mode and serves as the system clock input for custom filter tuning.
What does the 24-bit output format of the LTC2483CDD#PBF represent?
The LTC2483CDD#PBF outputs 24 bits per conversion: Bit 23 is the sign (SIG), Bit 22 is the MSB, Bits 21–6 contain the 16-bit two's complement result, and Bits 5–0 are zero. Status is encoded in SIG/MSB: both HIGH = overrange (+FS), both LOW = underrange (–FS), and mixed = valid conversion. This format enables immediate detection of out-of-range conditions and seamless integration with 32-bit microcontrollers without bit-shifting overhead.
LTC2483CDD#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-DFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2483CDD#PBF FAQ
1.How can I place an order for LTC2483CDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2483CDD#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 LTC2483CDD#PBF reliable?
The price and inventory of LTC2483CDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2483CDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2483CDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2483CDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2483CDD#PBF?
LTC2483CDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2483CDD#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 LTC2483CDD#PBF?
For technical support, including LTC2483CDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2483CDD#PBF requirements.
6.How does Aetrix verify that LTC2483CDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2483CDD#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 LTC2483CDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2483CDD#PBF?
All LTC2483CDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2483CDD#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 LTC2483CDD#PBF part is unused and in its original packaging.
Return procedure for LTC2483CDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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