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Analog Devices Inc. LTC2463CDD#PBF
- Part No.:
- LTC2463CDD#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-WFDFN Exposed Pad
- Datasheet:
-
LTC2463CDD#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12DFN
- Quantity:
- Payment:
- Shipping:
Inventory:3,206
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Product details
Overview
LTC2463CDD#PBF from Analog Devices (formerly Linear Technology) is a 16-bit differential ΔΣ analog-to-digital converter with integrated 1.25V precision reference, I²C interface, and ultra-low power operation. It delivers 60 conversions per second, ±2 LSB offset error (typ), 0.01% gain error (typ), and operates from 2.7V to 5.5V supply. It is used in high-accuracy sensor signal conditioning for industrial monitoring systems where low input current and relaxed anti-aliasing are critical.
For engineers reviewing the LTC2463CDD#PBF datasheet, LTC2463CDD#PBF pinout, LTC2463CDD#PBF application, or LTC2463CDD#PBF equivalent, key selection criteria include its differential input architecture, 2ppm/°C reference drift (C-grade), 200nA sleep current, 12-pin 3mm × 3mm DFN package, and guaranteed no missing codes across temperature - all validated for embedded environmental sensing and precision instrumentation.
Technical Context
The LTC2463CDD#PBF implements a proprietary delta-sigma architecture with continuous internal offset and full-scale calibration, eliminating user intervention while maintaining accuracy over time and temperature. Its differential input supports ±1.25V range referenced to the integrated 1.25V output, with clamping at 0 and 65535 codes.
It features an on-chip oscillator, no external components required for timing, and a two-wire I²C interface supporting dual slave addresses (0010100b or 1010100b via A0 pin) plus global address synchronization. Conversion settling is single-cycle with no latency, enabling true multiplexed sampling without additional delay compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit, no missing codes - ensures monotonicity and full code coverage for precision measurement. |
| Input Type | Differential (IN+, IN–) - rejects common-mode noise and enables bipolar signal acquisition relative to REF–. |
| Reference Output | 1.25V ±3mV (1.247V–1.253V), 2ppm/°C max drift (C-grade) - provides stable full-scale scaling without external reference. |
| Conversion Rate | 60 conversions/second - supports real-time monitoring of slow-varying physical parameters (e.g., temperature, pressure). |
| Supply Current | 1.5mA during conversion, 200nA in sleep mode - enables battery-powered or energy-harvested sensor nodes. |
| Offset Error | 2 LSB (typ), 5 LSB (max) - limits zero-point uncertainty to ≤38.1µV at 1.25V reference. |
| Gain Error | ±0.01% FS (typ) - contributes <±125µV absolute error at full scale, critical for calibrated transducer interfaces. |
Pinout & Package
Package: 12-lead (3mm × 3mm) plastic DFN with exposed pad (Pin 13), RoHS-compliant, 0°C to 70°C operating range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (1) | Reference output | Nominally 1.25V; sets ADC full-scale range; requires 0.1µF capacitor to GND for stability. |
| COMP (2) | Reference compensation | Stabilizes internal reference; must be tied to 0.1µF capacitor matching or exceeding REFOUT capacitance. |
| A0 (3) | I²C address select | Defines slave address: GND → 0010100b, VCC → 1010100b - enables dual-device bus configuration. |
| GND (4, 7, 11) | Ground return | Multiple low-impedance ground connections reduce noise coupling and improve PSRR. |
| SCL (5) | I²C clock input | Accepts up to 400kHz clock; device acts only as slave - no master capability. |
| SDA (6) | I²C bidirectional data | Open-drain output requiring external pull-up; outputs 16-bit result MSB-first on falling SCL edges. |
| REF– (8) | Negative reference input | Sets zero-input level; typically tied to system ground or sensor return - defines common-mode baseline. |
| IN+ (9) | Differential positive input | Accepts voltage up to VREF; supports signals slightly below GND (up to 8 LSBs) due to proprietary sampling. |
| IN– (10) | Differential negative input | Accepts voltage down to 0V; paired with IN+ for true differential measurement rejecting EMI. |
| VCC (12) | Supply voltage | 2.7V–5.5V operation; requires local 10µF + 0.1µF bypassing for low-noise conversion performance. |
| Exposed Pad (13) | Thermal & electrical ground | Must be soldered to PCB ground plane for thermal dissipation (θJA = 43°C/W) and noise reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 1.25V reference | 2ppm/°C max drift (C-grade), 0.1% initial accuracy - eliminates external reference cost, board space, and calibration overhead. |
| Proprietary input sampling | 50nA average input current - allows direct RC filtering (e.g., 1kΩ/0.1µF) with <1 LSB error, simplifying front-end design. |
| Single-conversion settling | No latency or filter delay - enables deterministic timing for multiplexed multi-channel sensor reads without pipeline stalls. |
| Continuous auto-calibration | Per-conversion offset and full-scale correction - maintains accuracy across temperature and time without user intervention. |
| Ultra-low sleep current | 200nA with ADC + reference powered down - extends battery life in intermittent-read applications (e.g., wireless sensor nodes). |
Applications
| Industrial Process Monitoring | Environmental Sensor Nodes |
|---|---|
|
Use Scenario: Measuring thermocouple or RTD outputs in factory automation PLC modules with limited power budget and strict EMC requirements. IC Role / Device Role / Timing Role: Differential ADC digitizing µV-level sensor signals referenced to local ground, synchronized via I²C global address for multi-node coherence. Use Value: 2ppm/°C reference drift and 2 LSB offset error ensure <±0.1°C repeatability over 0°C–70°C without recalibration. |
Use Scenario: Battery-powered air quality monitors logging CO₂, humidity, and particulate matter in smart buildings. IC Role / Device Role / Timing Role: Low-power ADC acquiring conditioned analog outputs from electrochemical and capacitive sensors at 60Hz. Use Value: 200nA sleep current and automatic nap/sleep state transitions enable >5-year battery life with daily wake-up cycles. |
| Direct Temperature Measurement | Embedded ADC Upgrade |
|
Use Scenario: Precision cold-junction compensation in handheld thermal imagers using thermistor bridges. IC Role / Device Role / Timing Role: Differential input captures bridge imbalance voltages while rejecting common-mode noise from switching power supplies. Use Value: 60SPS rate and no-latency output allow real-time thermal mapping without interpolation or buffering delays. |
Use Scenario: Replacing legacy 12-bit SAR ADCs in medical patient monitors requiring higher resolution without layout changes. IC Role / Device Role / Timing Role: Pin-compatible upgrade path (same DFN-12 footprint) delivering 16-bit resolution and integrated reference. Use Value: Eliminates external reference and op-amp buffer stages, reducing BOM count by 3 components and improving long-term stability. |
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 |
|---|---|---|---|
| ADS1115IDGSR | 16-bit, 860SPS max, external reference required, 150nA sleep current, no integrated oscillator. | Higher speed but lacks integrated reference and proprietary low-input-current sampling - requires external RC filter redesign. | Choose when higher throughput is needed and board space allows external reference + oscillator support circuitry. |
| MCP3424-E/SL | 18-bit, 15SPS, 2ppm/°C reference, I²C interface, but no differential input per channel - uses pseudo-differential mode. | Higher resolution but slower; pseudo-differential architecture increases susceptibility to common-mode noise in noisy environments. | Choose for ultra-high-resolution DC measurements where speed is secondary and noise immunity is less critical. |
Compared with ADS1115IDGSR and MCP3424-E/SL, the LTC2463CDD#PBF uniquely combines differential input, integrated 2ppm/°C reference, 60SPS rate, and 50nA input current - making it optimal for compact, low-noise, battery-aware sensor front-ends where system-level simplicity and long-term stability are prioritized over raw speed or bit depth.
Availability
LTC2463CDD#PBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, direct temperature measurement, and embedded ADC upgrades requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for LTC2463CDD#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 LTC2463CDD#PBF belongs to the LTC® precision delta-sigma ADC family, designed specifically for low-power, high-accuracy sensor interfacing in space-constrained industrial and environmental monitoring applications.
FAQ
What is the operating temperature range for the LTC2463CDD#PBF?
The LTC2463CDD#PBF is specified for 0°C to 70°C operation (C-grade). This is confirmed in the "ORDER INFORMATION" table and "ABSOLUTE MAXIMUM RATINGS" section of the datasheet. The "C" in the part number explicitly denotes the commercial temperature grade, distinct from the "I" grade (–40°C to 85°C) offered in other variants like LTC2463IDD#PBF.
Does the LTC2463CDD#PBF require external components for basic operation?
No, the LTC2463CDD#PBF requires only three external passive components for functional operation: a 0.1µF capacitor on REFOUT to GND, a 0.1µF capacitor on COMP to GND, and a 1.7kΩ pull-up resistor on SDA to VCC. The internal oscillator eliminates need for crystals or RC timing networks, and the integrated 1.25V reference removes requirement for external voltage references.
How does the LTC2463CDD#PBF handle input signals below ground?
The LTC2463CDD#PBF supports inputs slightly below ground on IN+ or IN– - up to approximately 8 LSBs (≈305µV at 1.25V reference) - due to its proprietary input sampling architecture. This is documented in the "Input Voltage Range (LTC2463)" section and illustrated in Figure 3, enabling direct measurement of signals like thermocouple outputs without level-shifting circuitry.
What is the I²C address configuration for the LTC2463CDD#PBF?
The LTC2463CDD#PBF supports two I²C slave addresses determined by the A0 pin: 0010100b (0x24) when A0 = GND, and 1010100b (0x54) when A0 = VCC. Both addresses are listed in the "PIN FUNCTIONS" section. Additionally, it responds to the global address 1110111b (0x77) for synchronized conversions across multiple devices on the same bus.
Can the reference and ADC be powered down independently on the LTC2463CDD#PBF?
Yes. The LTC2463CDD#PBF supports two low-power states: "Nap" (ADC powered down, reference active) and "Sleep" (both ADC and reference powered down). Sleep mode is enabled via the SLP bit in the 4-bit data input word (Figure 5b), reducing total supply current to 200nA. Reference startup time after sleep exit is 12ms with 0.1µF capacitors on REFOUT and COMP.
LTC2463CDD#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:
- I2C
- 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:
- Selectable Address
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 12-DFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2463CDD#PBF FAQ
1.How can I place an order for LTC2463CDD#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2463CDD#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 LTC2463CDD#PBF reliable?
The price and inventory of LTC2463CDD#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2463CDD#PBF is usually 5 days.
3.What payment methods are accepted for LTC2463CDD#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2463CDD#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2463CDD#PBF?
LTC2463CDD#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2463CDD#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 LTC2463CDD#PBF?
For technical support, including LTC2463CDD#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2463CDD#PBF requirements.
6.How does Aetrix verify that LTC2463CDD#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2463CDD#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 LTC2463CDD#PBF meets industry standards.
7.What is the process for return or replacement of LTC2463CDD#PBF?
All LTC2463CDD#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2463CDD#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 LTC2463CDD#PBF part is unused and in its original packaging.
Return procedure for LTC2463CDD#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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