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Analog Devices Inc. LTC2460CDD#TRPBF
- Part No.:
- LTC2460CDD#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LTC2460CDD#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,208
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Product details
Overview
LTC2460CDD#TRPBF from Analog Devices (formerly Linear Technology) is a single-ended, 16-bit delta-sigma ADC with integrated 1.25V precision reference, SPI interface, and ultra-low 200nA sleep current. It operates from 2.7V to 5.5V, delivers 60 conversions per second, and achieves ±2 LSB offset error and ±0.01% gain error - ideal for battery-powered environmental sensors and embedded system monitoring.
For engineers reviewing the LTC2460CDD#TRPBF datasheet, LTC2460CDD#TRPBF pinout, LTC2460CDD#TRPBF application, or LTC2460CDD#TRPBF equivalent, key selection considerations include its 0V to VREF input range, internal oscillator eliminating external timing components, no-latency data output, 3mm × 3mm DFN-12 package, and guaranteed no missing codes across temperature.
Technical Context
The LTC2460CDD#TRPBF implements a proprietary delta-sigma architecture with continuous internal offset and full-scale calibration, ensuring stability over time and temperature without user intervention. Its input sampling scheme draws only 50nA average input current, enabling direct RC filtering without significant error.
It operates in three deterministic states - CONVERT (16.6ms typical), SLEEP/NAP, and DATA INPUT/OUTPUT - with automatic power-down after conversion. Reference startup time is 12ms when COMP and REFOUT are decoupled with 0.1µF capacitors, and the device supports both CPOL = 0 and CPOL = 1 SPI modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement. |
| Input Range | 0V to 1.25V (single-ended) - matches internal reference; simplifies signal conditioning for grounded sensors. |
| Reference Accuracy | 1.247V to 1.253V (±0.1% initial), ±2ppm/°C drift (C-grade) - enables stable absolute measurements without external trimming. |
| Conversion Rate | 60 conversions per second - supports real-time monitoring of slow-varying physical parameters (e.g., temperature, pressure). |
| Supply Current | 1.5mA during conversion, ≤2µA in sleep mode - extends battery life in portable instrumentation. |
| Integral Nonlinearity | ±1 LSB (typ), ±10 LSB (max) - ensures high fidelity digitization with minimal post-processing correction. |
| SPI Interface | 4-wire, CPOL configurable, 2MHz max SCK - compatible with standard microcontroller peripherals without custom timing logic. |
Pinout & Package
Package: 12-lead (3mm × 3mm) plastic DFN with exposed pad (Pin 13), rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (1) | Reference output | Nominally 1.25V; sets full-scale input range; requires 0.1µF bypass to GND for stability. |
| COMP (2) | Reference compensation | Connects to same 0.1µF capacitor as REFOUT; critical for low-noise reference performance. |
| CS (3) | Chip select (active low) | Enables SDO output and initiates DATA INPUT/OUTPUT state; HIGH places SDO in high-Z. |
| SDI (4) | Serial data input | 4-bit programming interface for SPD (output rate) and SLP (reference sleep); can be tied to GND/VCC for fixed configuration. |
| SCK (5) | Serial clock input | Controls data shift timing; supports idle-high (CPOL=1) or idle-low (CPOL=0) modes. |
| SDO (6) | Serial data output | 3-state output delivering 16-bit result MSB-first; indicates conversion status when CS is pulled low during SCK=HIGH. |
| GND (7, 11) | Analog/digital ground | Low-impedance connection to PCB ground plane; exposed pad (13) must also connect to GND. |
| REF– (8) | Negative reference input | Tied to system ground or sensor ground sense point; defines zero-input level for ADC. |
| IN (9) | Analog input (single-ended) | Accepts 0V to VREF signals; designed for direct connection to resistive sensors or voltage dividers. |
| GND (10) | Input ground reference | Dedicated ground return for IN pin; improves noise immunity in single-ended configurations. |
| VCC (12) | Positive supply | 2.7V–5.5V operation; requires parallel 10µF + 0.1µF bypassing at pin for stable conversion. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency serial output | Data corresponds exactly to last completed conversion - eliminates filter settling delay in multiplexed sensor systems. |
| Integrated 1.25V reference | 2ppm/°C max drift, 0.1% initial accuracy - removes need for external reference IC and associated layout complexity. |
| Ultra-low input sampling current | 50nA average - allows use of simple RC anti-aliasing filters (e.g., 1kΩ + 0.1µF) with <1 LSB error. |
| Auto shutdown architecture | Reduces supply current to 200nA when both ADC and reference are powered down - optimal for duty-cycled sensing. |
| Internal oscillator | No external crystal or clock required - reduces BOM count and board space in compact designs. |
| Continuous calibration | Per-conversion offset and full-scale correction - maintains accuracy over temperature and time without host intervention. |
Applications
| Environmental Monitoring | System Health Monitoring |
|---|---|
Use Scenario: Measuring temperature, humidity, or air quality using resistive or analog-output sensors in wireless IoT nodes. IC Role / Device Role / Timing Role: Single-ended ADC digitizing conditioned sensor outputs; provides stable 16-bit resolution without external reference or clock. Use Value: Enables >10-year battery life via 200nA sleep current and eliminates calibration drift with on-chip auto-calibration. |
Use Scenario: Monitoring supply rail voltages, CPU core temperatures, or fan tachometer signals in industrial controllers. IC Role / Device Role / Timing Role: Embedded ADC capturing slow-varying system parameters; interfaces directly to MCU SPI peripheral. Use Value: Reduces design risk by integrating reference and oscillator - no external component tolerance or aging effects to manage. |
| Direct Temperature Measurement | Embedded ADC Upgrade |
Use Scenario: Digitizing thermistor or RTD bridge outputs in medical or test equipment requiring ±0.1°C accuracy. IC Role / Device Role / Timing Role: Precision ADC with 0V–1.25V input range matched to 1.25V reference; supports ratiometric sensor configurations. Use Value: Delivers 16-bit linearity and <2 LSB offset error - replaces higher-cost external reference + ADC combinations. |
Use Scenario: Replacing legacy 12-bit ADCs in existing designs to improve resolution without changing PCB layout. IC Role / Device Role / Timing Role: Pin-compatible upgrade path (DFN-12 footprint) offering 4× resolution increase and integrated reference. Use Value: Achieves higher measurement fidelity while reducing component count and qualification effort. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit sigma-delta ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IRUGT | 4-channel, I²C interface, 4.096V internal reference, 860SPS max, no integrated oscillator | Requires external pull-up resistors and I²C master; better suited for multi-sensor polling vs. single-channel burst reads | Choose ADS1115IRUGT for multi-channel, I²C-based systems where bus sharing is preferred over SPI speed. |
| MCP3424-E/ST | 4-channel, I²C interface, 2.048V reference, 15SPS (18-bit) / 240SPS (16-bit), no auto-calibration | Lacks continuous offset calibration; requires periodic manual recalibration for long-term stability | Choose MCP3424-E/ST when cost sensitivity outweighs long-term drift requirements and I²C integration is mandatory. |
Compared with ADS1115IRUGT and MCP3424-E/ST, the LTC2460CDD#TRPBF offers superior long-term stability via per-conversion calibration, lower sleep current (200nA vs. ≥1µA), and true no-latency output - making it optimal for ultra-low-power, single-channel precision sensing where SPI is available.
Availability
LTC2460CDD#TRPBF is available at Aetrix Electronics and suitable for environmental monitoring, system health monitoring, and direct temperature measurement applications requiring stable component supply, long-lifecycle support, and guaranteed C-grade (0°C to 70°C) performance.
Supply support for LTC2460CDD#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 LTC2460CDD#TRPBF belongs to ADI's ultra-low-power precision ADC product line, designed specifically for battery-operated instrumentation and embedded sensing where integration, accuracy, and energy efficiency are critical.
FAQ
What is the operating temperature range of the LTC2460CDD#TRPBF?
The LTC2460CDD#TRPBF is specified for the commercial temperature range of 0°C to 70°C. This grade is validated per the manufacturer's datasheet and applies to all electrical characteristics unless otherwise noted. The "C" suffix explicitly denotes this temperature rating, and thermal derating is not required within this range. The device uses internal calibration to maintain accuracy across the full span.
Does the LTC2460CDD#TRPBF require an external clock source?
No, the LTC2460CDD#TRPBF includes a fully integrated oscillator and requires no external clock components. This eliminates timing component count, layout sensitivity, and frequency tolerance concerns. The internal oscillator drives the delta-sigma modulator and digital filter, enabling consistent 60SPS operation independent of external timing sources - a key enabler for compact, low-risk designs.
How does the LTC2460CDD#TRPBF achieve 200nA sleep current?
The LTC2460CDD#TRPBF achieves 200nA sleep current by powering down both the ADC core and the integrated 1.25V reference simultaneously when configured in SLEEP mode via the SLP bit. This dual-shutdown architecture - confirmed in the datasheet's Electrical Characteristics table - reduces total quiescent draw far below typical delta-sigma ADCs, making it suitable for multi-year battery operation in intermittent-sampling applications.
Can the LTC2460CDD#TRPBF interface directly with a thermistor voltage divider?
Yes, the LTC2460CDD#TRPBF is optimized for direct connection to ratiometric sensors like thermistor dividers. Its 0V to 1.25V input range matches the integrated reference, and its 50nA average input sampling current introduces negligible loading error - even with high-impedance dividers (e.g., 10kΩ + 10kΩ). No buffer amplifier is required, simplifying signal chain design and improving system-level accuracy.
What SPI modes does the LTC2460CDD#TRPBF support?
The LTC2460CDD#TRPBF supports both CPOL = 0 (SCK idle low) and CPOL = 1 (SCK idle high) SPI modes, as verified in the Applications Information section. It is compatible with standard microcontroller SPI peripherals without requiring custom firmware workarounds. Data is always MSB-first, and the device tolerates SCK frequencies up to 2MHz - enabling robust communication across diverse host platforms.
LTC2460CDD#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 60
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- ADC
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 1
- Architecture:
- Sigma-Delta
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 12-DFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2460CDD#TRPBF FAQ
1.How can I place an order for LTC2460CDD#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2460CDD#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 LTC2460CDD#TRPBF reliable?
The price and inventory of LTC2460CDD#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2460CDD#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2460CDD#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2460CDD#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2460CDD#TRPBF?
LTC2460CDD#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2460CDD#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 LTC2460CDD#TRPBF?
For technical support, including LTC2460CDD#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2460CDD#TRPBF requirements.
6.How does Aetrix verify that LTC2460CDD#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2460CDD#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 LTC2460CDD#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2460CDD#TRPBF?
All LTC2460CDD#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2460CDD#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 LTC2460CDD#TRPBF part is unused and in its original packaging.
Return procedure for LTC2460CDD#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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