My Inquiry
My Account
Analog Devices Inc. LTC2462CDD#PBF
- Part No.:
- LTC2462CDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LTC2462CDD#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,926
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2462CDD#PBF from Analog Devices (formerly Linear Technology) is a 16-bit delta-sigma ADC with integrated 1.25V precision reference, differential ±VREF input range, SPI interface, and ultra-low 2µA sleep current. It operates from 2.7V to 5.5V, delivers 60 conversions per second, and targets high-accuracy sensor digitization in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2462CDD#PBF datasheet, LTC2462CDD#PBF pinout, LTC2462CDD#PBF application, or LTC2462CDD#PBF equivalent, key selection criteria include guaranteed no-missing-codes resolution, 2ppm/°C reference drift (C-grade), 2LSB offset error, single-cycle settling for multiplexed inputs, and DFN-12 (3mm × 3mm) package compatibility with tight-layout embedded designs.
Technical Context
The LTC2462CDD#PBF implements a proprietary delta-sigma architecture with continuous internal offset and full-scale calibration, eliminating user intervention while maintaining accuracy across temperature. Its integrated oscillator enables autonomous operation without external timing components.
It supports two power states: conversion mode (1.5mA typical) and sleep mode (≤2µA), with configurable reference shutdown via SPI command. The differential input accepts ±1.25V full-scale range referenced to its internal 1.25V output, and features 50nA average input sampling current enabling direct RC anti-aliasing filter integration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit, no missing codes - guarantees monotonicity and unambiguous digital representation of analog input. |
| Reference Voltage | 1.25V ±3mV (1.247V–1.253V) - sets full-scale differential input range at ±1.25V with 2ppm/°C max drift (C-grade). |
| Conversion Rate | 60 conversions/second - fixed-rate output with 16.6ms nominal conversion time, no latency between completion and data availability. |
| Offset Error | 2 LSB max - contributes ≤0.003% FS error at 16-bit scale, enabling high-precision zero-point measurement. |
| Gain Error | ±0.01% FS max - includes ADC and reference contributions, ensuring end-to-end linearity without external trimming. |
| Sleep Current | 2 µA max - enables multi-year battery life in intermittent-sampling IoT sensor nodes. |
| Supply Range | 2.7V to 5.5V - compatible with single-cell Li-ion, 3.3V, and 5V system rails without LDO overhead. |
Pinout & Package
Package: 12-lead (3mm × 3mm) plastic DFN (DD package), exposed pad (Pin 13) recommended for PCB ground connection. Thermal resistance θJA = 43°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (1) | Reference output | Nominally 1.25V precision voltage source; must be decoupled with ≤0.1µF capacitor to GND for stability. |
| COMP (2) | Reference compensation | Requires 0.1µF capacitor to GND; value must be ≥ REFOUT capacitor to prevent oscillation. |
| 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 SLEEP/NAP mode and (LTC2460 only) output rate; tied to GND/VCC for simplified configuration. |
| SCK (5) | Serial clock input | Controls data shift timing; supports CPOL = 0 or 1; max frequency 2MHz. |
| SDO (6) | Serial data output | 3-state output delivering 16-bit MSB-first result; indicates conversion status (HIGH = in progress, LOW = complete) when CS low and SCK high. |
| GND (7, 11) | Ground | Primary analog/digital return; pins 7 and 11 must connect to low-impedance ground plane. |
| REF– (8) | Negative reference input | Sets zero-input point; typically connected to system ground or remote sensor ground sense. |
| IN+ (9) | Differential positive input | Accepts voltage up to VREF; supports 8 LSB overrange below GND when IN– = GND. |
| IN– (10) | Differential negative input | Accepts voltage up to VREF; enables true differential measurement rejecting common-mode noise. |
| VCC (12) | Positive supply | 2.7V–5.5V input; requires 10µF + 0.1µF parallel bypassing close to pin. |
| Exposed Pad (13) | Thermal/Ground pad | Optional ground connection; improves thermal performance and EMI rejection. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.25V reference | 2ppm/°C max drift (C-grade), 0.1% initial accuracy, and 30nV/√Hz output noise density enable self-contained precision without external references. |
| No-latency data output | Conversion result available immediately after completion with no filter settling delay-critical for real-time multiplexed sensor arrays. |
| Proprietary input sampling | 50nA average input current allows direct use of simple RC filters (e.g., 1kΩ + 0.1µF) with <1 LSB added error, reducing BOM and layout complexity. |
| Auto-calibration engine | Continuous internal offset and full-scale correction runs transparently every conversion, ensuring long-term accuracy without firmware overhead. |
| Ultra-low sleep power | 2µA max supply current in sleep mode with reference powered down extends battery life in duty-cycled measurement applications. |
Applications
| Industrial Process Monitoring | Environmental Sensor Nodes |
|---|---|
|
Use Scenario: Continuous logging of pressure, flow, and temperature transducer outputs in factory automation PLCs. IC Role / Device Role / Timing Role: Differential ADC digitizing millivolt-level bridge sensor outputs with rejection of 50/60Hz EMI and cable-induced common-mode noise. Use Value: Eliminates need for external instrumentation amplifier and precision reference, reducing component count and calibration burden while maintaining 16-bit integrity. |
Use Scenario: Battery-powered air quality monitors measuring CO₂, humidity, and particulate matter over multi-year deployments. IC Role / Device Role / Timing Role: Low-power ADC acquiring conditioned analog signals during brief wake-up intervals, then entering 2µA sleep until next sample. Use Value: Enables >5-year operation on a single CR2032 coin cell by minimizing active time and leveraging auto-shutdown between conversions. |
| Direct Temperature Measurement | Embedded ADC Upgrade |
|
Use Scenario: High-resolution thermocouple or RTD readout in medical diagnostic equipment requiring traceable accuracy. IC Role / Device Role / Timing Role: Precision delta-sigma converter interfacing directly to cold-junction compensation circuits and ratiometric sensor bridges. Use Value: 2LSB offset error and ±0.01% gain error ensure sub-0.1°C repeatability without per-unit trimming or lookup tables. |
Use Scenario: Retrofitting legacy 12-bit microcontroller-based systems with higher-resolution data acquisition capability. IC Role / Device Role / Timing Role: SPI-compatible drop-in ADC replacement adding 16-bit resolution and integrated reference without changing MCU firmware timing. Use Value: Pin- and software-compatible with LTC2460, enabling seamless upgrade path while retaining existing PCB layout and driver code. |
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, I²C interface, 4-channel MUX, no integrated reference - requires external 2.048V ref; 150µA active current. | Better suited for multi-channel, low-pin-count I²C systems; lacks differential input flexibility and ultra-low sleep current. | Select ADS1115IDGSR when I²C bus integration and channel multiplexing outweigh need for lowest sleep power and self-contained reference. |
| LTC2452CMS#PBF | 16-bit, differential, SPI, ±2.048V full-scale range, 2ppm/°C ref, but MSOP-12 package - larger footprint than DFN-12. | Higher input range supports wider sensor spans; same core architecture but different pinout and thermal performance (θJA = 120°C/W). | Choose LTC2452CMS#PBF when ±2.048V input range is required and MSOP-12 board space is available. |
Compared with ADS1115IDGSR and LTC2452CMS#PBF, the LTC2462CDD#PBF uniquely combines DFN-12 size, 2µA sleep current, integrated 1.25V reference, and differential ±1.25V range - making it optimal for compact, battery-sensitive, single-channel precision sensing where SPI is preferred and external reference management is undesirable.
Availability
LTC2462CDD#PBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, and direct temperature measurement requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for LTC2462CDD#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 LTC2462 belongs to Linear's ultra-low-power precision delta-sigma ADC family, designed specifically for high-accuracy, space-constrained sensor interfaces in industrial, medical, and portable instrumentation.
FAQ
What is the operating temperature range of the LTC2462CDD#PBF?
The LTC2462CDD#PBF is rated for 0°C to 70°C ambient operation (C-grade). This range is validated across all electrical specifications including reference drift (±2ppm/°C max), offset error (2 LSB max), and supply current (1.5mA typ in conversion mode). Operation outside this range requires validation per I-grade variant LTC2462IDD#PBF.
Does the LTC2462CDD#PBF require an external crystal or oscillator?
No, the LTC2462CDD#PBF includes a fully integrated oscillator and requires no external timing components. This eliminates BOM cost, board space, and startup delay associated with crystals, while ensuring consistent 60-conversion-per-second timing across voltage and temperature.
How does the LTC2462CDD#PBF handle input overrange conditions?
The LTC2462CDD#PBF clamps output codes at 0 (for differential input ≤ –VREF) and 65535 (for ≥ +VREF). It also supports 8 LSB overrange below GND - e.g., with IN– = GND and VREF = 1.25V, an IN+ of –0.305mV yields code 32760 - enabling robust measurement near signal limits without external level-shifting.
Can the LTC2462CDD#PBF be used with a 3.3V microcontroller SPI interface?
Yes, the LTC2462CDD#PBF supports 2.7V–5.5V VCC and has CMOS-compatible digital I/O: VIH = VCC – 0.3V and VIL = 0.3V. At VCC = 3.3V, it accepts 3.0V as HIGH and 0.3V as LOW - fully interoperable with standard 3.3V MCUs without level translation.
What is the purpose of the COMP pin on the LTC2462CDD#PBF?
The COMP pin on the LTC2462CDD#PBF is the internal reference compensation node. It must be connected to a 0.1µF capacitor to GND to stabilize the 1.25V reference and suppress noise. Its capacitance must be ≥ that on REFOUT to prevent reference oscillation - a critical layout requirement for specified 30nV/√Hz noise performance.
LTC2462CDD#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-WFDFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 60
- 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:
- 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:
- -
LTC2462CDD#PBF FAQ
1.How can I place an order for LTC2462CDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2462CDD#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 LTC2462CDD#PBF reliable?
The price and inventory of LTC2462CDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2462CDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2462CDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2462CDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2462CDD#PBF?
LTC2462CDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2462CDD#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 LTC2462CDD#PBF?
For technical support, including LTC2462CDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2462CDD#PBF requirements.
6.How does Aetrix verify that LTC2462CDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2462CDD#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 LTC2462CDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2462CDD#PBF?
All LTC2462CDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2462CDD#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 LTC2462CDD#PBF part is unused and in its original packaging.
Return procedure for LTC2462CDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2462CDD#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…
