My Inquiry
My Account
Analog Devices Inc. LTC2480CDD#PBF
- Part No.:
- LTC2480CDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
LTC2480CDD#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 10DFN
- Quantity:
- Payment:
- Shipping:
Inventory:160
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2480CDD#PBF from Analog Devices (formerly Linear Technology) is a 16-bit + sign no-latency delta-sigma ADC with patented Easy Drive input current cancellation. It features programmable gain (1–256), rail-to-rail differential inputs (0V to VCC common mode), internal oscillator, and simultaneous 50Hz/60Hz line rejection - enabling direct digitization of high-impedance sensors like strain gauges and load cells with ±2 ppm INL and 0.5 µV offset error.
For engineers reviewing the LTC2480CDD#PBF datasheet, LTC2480CDD#PBF pinout, LTC2480CDD#PBF application, or LTC2480CDD#PBF equivalent, this page delivers verified technical context, validated pin functions, real-world use cases in precision instrumentation, and confirmed alternative options for industrial sensor interface designs requiring DC accuracy and low-power operation.
Technical Context
The LTC2480CDD#PBF implements a third-order delta-sigma modulator with auto-calibrating offset and full-scale correction, eliminating dynamic input current errors via its Easy Drive sampling scheme. Its differential input stage accepts signals from GND to VCC independent of reference voltage, supporting VREF as low as 100 mV or tied directly to VCC.
It operates in two speed modes: normal (7.5 sps, 157 ms conversion time in 50Hz rejection) and 2× speed (15 sps, 78.7 ms). Line rejection is selectable per application - 50Hz, 60Hz, or simultaneous 50Hz/60Hz - using either the internal 307.2 kHz oscillator or an external clock applied to the fO pin.
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 of VREF (typical) - enables sub-µV-level measurement fidelity in high-precision weigh scales and DVMs. |
| Offset Error | ±0.5 µV (max, over temp) - eliminates need for system-level zero calibration in temperature-stable sensor front-ends. |
| Full-Scale Error | ±25 ppm of VREF (max, over temp) - supports accurate absolute measurements without per-unit gain trimming. |
| Input Common Mode Range | GND to VCC - allows direct interfacing with unbuffered resistive sensors operating at rail-referenced potentials. |
| Supply Voltage | 2.7 V to 5.5 V - compatible with single-cell Li-ion, 3.3 V, and 5 V industrial supply rails. |
| Quiescent Current | 160 µA (conversion), 1 µA (sleep) - enables battery-powered portable instrumentation with multi-year runtime. |
Pinout & Package
Package: 10-lead (3 mm × 3 mm) plastic DFN with exposed pad (Pin 11 = GND). RoHS-compliant, lead-free finish (PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SDI (Pin 1) | Serial data input | Configures gain, line rejection mode, input source (IN+/temp), and 2× speed via 8-bit command on rising SCK edge. |
| VCC (Pin 2) | Positive supply | Accepts 2.7–5.5 V; requires local 1 µF tantalum + 0.1 µF ceramic bypass to GND (Pin 8) for noise immunity. |
| VREF (Pin 3) | Reference input | Supports 0.1 V to VCC; negative reference is GND (Pin 8); enables ratiometric or absolute measurement setups. |
| IN+ / IN– (Pins 4, 5) | Differential analog inputs | Rail-to-rail common-mode (GND to VCC) with ±0.5·VREF/GAIN differential range; zero differential input current enables >100 kΩ source impedance. |
| CS (Pin 6) | Active-low chip select | Wakes device from sleep (1 µA) into conversion/data output; falling edge initiates new conversion; rising edge during transfer aborts and restarts. |
| SDO (Pin 7) | Three-state serial data output | Outputs 24-bit result MSB-first on falling SCK edge; high-Z when CS = HIGH; also serves as conversion status indicator. |
| GND (Pin 8) | Analog/digital/reference ground | Single-point star ground connection required; exposed pad (Pin 11) must be soldered to PCB ground plane for thermal and EMI performance. |
| SCK (Pin 9) | Bidirectional serial clock | Auto-configured at power-up: outputs internal clock (38.4 kHz) when pulled high; accepts external clock up to 4 MHz when pulled low. |
| fO (Pin 10) | Frequency control input | GND = internal 307.2 kHz oscillator; external clock (10–1000 kHz) overrides for custom data rates or filter null positioning. |
Key Features
| Feature | Design Value |
|---|---|
| Easy Drive™ input current cancellation | Eliminates dynamic input bias current errors - enables direct connection to high-impedance bridges and thermistors without external op-amp buffering. |
| No-latency digital filter | Settles in one conversion cycle - avoids group delay artifacts in closed-loop control or real-time monitoring applications. |
| Programmable line frequency rejection | Selectable 50 Hz, 60 Hz, or simultaneous dual-frequency rejection - critical for stable readings in AC-mains-noise environments (e.g., factory floors). |
| On-chip temperature sensor | Integrated PTAT circuit (390–450 mV at 27°C) - provides self-diagnostic capability and ambient compensation without external components. |
| Internal trimmed oscillator | 307.2 kHz ±2% (over –40°C to 70°C) - removes crystal cost, board space, and layout sensitivity while maintaining precise 50/60 Hz null placement. |
Applications
| Weight Scales | Industrial Process Control |
|---|---|
|
Use Scenario: High-resolution load cell readout in platform scales and hopper weighing systems with AC mains interference. IC Role / Device Role / Timing Role: Primary sigma-delta ADC digitizing mV-level bridge outputs; performs simultaneous 50Hz/60Hz rejection to suppress EMI from nearby motors or lighting. Use Value: Achieves <1 µV RMS noise and ±2 ppm INL - enabling 1:1,000,000 resolution (20+ bit effective) without external amplification or filtering. |
Use Scenario: Analog input module for PLCs measuring pressure, flow, or level transmitters in noisy factory environments. IC Role / Device Role / Timing Role: Isolated sensor interface ADC with rail-to-rail input support and programmable gain - accepts 4–20 mA loop outputs via precision shunt resistor. Use Value: GND-to-VCC common-mode range and 0.5 µV offset allow direct shunt-based current sensing without level-shifting circuitry. |
| Direct Temperature Measurement | Strain Gauge Transducers |
|
Use Scenario: Precision 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 internal temperature sensor used for cold-junction compensation and drift correction of external sensors. Use Value: 1 µA sleep current and on-chip PTAT enable battery-operated handheld thermometers with multi-year shelf life and <0.1°C accuracy. |
Use Scenario: Wheatstone bridge signal conditioning in structural health monitoring and material testing equipment. IC Role / Device Role / Timing Role: Differential ADC with programmable gain (up to 256×) and zero differential input current - interfaces directly to unbuffered 350 Ω or 1 kΩ strain gauges. Use Value: Eliminates need for instrumentation amplifier stage - reduces BOM count, thermal EMF errors, and PCB area by >40% versus discrete front-end solutions. |
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 |
|---|---|---|---|
| ADS124S08IPWR | 24-bit resolution, integrated PGA (1–128×), but no simultaneous 50/60Hz rejection; requires external clock for notch tuning. | Higher resolution suited for ultra-low-drift metrology; lacks built-in dual-frequency rejection - needs firmware-based digital filtering. | Choose for applications needing >16-bit ENOB and integrated PGA, but accept added software complexity for line-noise suppression. |
| MAX11206ETL+ | 18-bit resolution, 2.5 V internal reference, fixed 50/60Hz rejection only - no programmable gain or temperature sensor. | Optimized for compact, low-cost portable DMMs; lacks Easy Drive - requires <10 kΩ source impedance for full accuracy. | Choose when board space and cost are constrained, and sensor source impedance is low; avoid for high-Z bridge or thermistor interfaces. |
Compared with ADS124S08IPWR and MAX11206ETL+, the LTC2480CDD#PBF uniquely combines 16-bit precision, zero-input-current architecture, simultaneous dual-frequency rejection, and on-chip temperature sensing - making it optimal for embedded industrial sensors where hardware-level noise immunity and minimal external components are mandatory.
Availability
LTC2480CDD#PBF is available at Aetrix Electronics and suitable for weight scales, industrial process controllers, and portable instrumentation requiring stable component supply across extended production lifecycles.
Supply support for LTC2480CDD#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 technologies.
The LTC2480CDD#PBF belongs to Linear's precision delta-sigma ADC product line, designed specifically for direct sensor digitization in industrial, medical, and test equipment where low power, high DC accuracy, and robust line-noise immunity are essential.
FAQ
What is the operating temperature range of the LTC2480CDD#PBF?
The LTC2480CDD#PBF is rated for 0°C to 70°C ambient operation - indicated by the "C" grade suffix. This makes it suitable for commercial and industrial indoor applications where extreme thermal stress is not expected. The device maintains full specification compliance across this range, including ±0.5 µV offset error and ±25 ppm full-scale error.
Does the LTC2480CDD#PBF require an external crystal or oscillator?
No, the LTC2480CDD#PBF includes an on-chip trimmed oscillator running at 307.2 kHz, which enables precise 50 Hz and 60 Hz line rejection without external timing components. The fO pin can be grounded to activate it - eliminating crystal cost, footprint, and layout sensitivity. An external clock (10–1000 kHz) may be applied only if custom data rates or alternate filter nulls are needed.
How does the Easy Drive technology in the LTC2480CDD#PBF improve sensor interface design?
Easy Drive technology in the LTC2480CDD#PBF cancels differential input current dynamically during sampling - reducing input bias current to near-zero. This allows direct connection to high-impedance sources (e.g., 100 kΩ strain gauge bridges or NTC thermistors) without external op-amps, preserving DC accuracy and eliminating thermal EMF and drift errors introduced by discrete buffering stages.
Can the LTC2480CDD#PBF measure its own die temperature?
Yes, the LTC2480CDD#PBF integrates a PTAT (proportional-to-absolute-temperature) sensor that outputs 390–450 mV at 27°C. By configuring the SDI command to select the internal temperature channel, the device returns calibrated temperature readings alongside analog input conversions - enabling on-chip thermal compensation and system diagnostics without additional ICs.
What are the key differences between normal and 2× speed modes in the LTC2480CDD#PBF?
In 2× speed mode, the LTC2480CDD#PBF doubles output data rate (to 15 sps) and halves conversion time (e.g., 78.7 ms vs. 157.2 ms in 50Hz mode), but trades off slightly higher noise (0.84 µVRMS vs. 0.6 µVRMS) and reduced gain range (1–128× vs. 1–256×). This mode suits applications needing faster response with acceptable SNR degradation, such as dynamic load monitoring or rapid sensor polling.
LTC2480CDD#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):
- 7.5
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- SPI
- Configuration:
- MUX-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:
- Temperature Sensor
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 10-DFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2480CDD#PBF FAQ
1.How can I place an order for LTC2480CDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2480CDD#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 LTC2480CDD#PBF reliable?
The price and inventory of LTC2480CDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2480CDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2480CDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2480CDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2480CDD#PBF?
LTC2480CDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2480CDD#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 LTC2480CDD#PBF?
For technical support, including LTC2480CDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2480CDD#PBF requirements.
6.How does Aetrix verify that LTC2480CDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2480CDD#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 LTC2480CDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2480CDD#PBF?
All LTC2480CDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2480CDD#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 LTC2480CDD#PBF part is unused and in its original packaging.
Return procedure for LTC2480CDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2480CDD#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
