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Analog Devices Inc. LTC2471CMS#TRPBF
- Part No.:
- LTC2471CMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2471CMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,479
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Product details
Overview
LTC2471CMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit single-ended I²C ΔΣ ADC with integrated 1.25V precision reference, 208sps/833sps selectable output rate, ±1mV offset error, and 0.01% gain error. It operates from 2.7V to 5.5V and targets low-power sensor monitoring in industrial and environmental systems.
For engineers reviewing the LTC2471CMS#TRPBF datasheet, LTC2471CMS#TRPBF pinout, LTC2471CMS#TRPBF application, or LTC2471CMS#TRPBF equivalent, key selection criteria include its single-ended input architecture, 2µA max sleep current, 12-lead MSOP package, and I²C address configurability via A0 pin.
Technical Context
The LTC2471CMS#TRPBF implements a delta-sigma modulator with sinc³ decimation filtering, achieving 16-bit resolution without latency in multiplexed systems. Its internal oscillator eliminates external timing components, and proprietary input sampling reduces average input current to 50nA.
Conversion settling is single-cycle (4.8ms at 208sps, 1.2ms at 833sps), and power management supports automatic NAP mode after conversion or user-configurable SLEEP mode that powers down both ADC and reference-reducing supply current to ≤2µA.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-fidelity analog sensing |
| Output Rate | Selectable 208sps or 833sps - enables trade-off between noise performance and throughput |
| Reference Voltage | 1.25V ±3mV (1.247V–1.253V) - sets full-scale input range; stable over temperature and supply |
| Offset Error | ±1mV (typ) - contributes <0.08% of full-scale error at VREF = 1.25V |
| Gain Error | ±0.01% FS (typ) - ensures accurate scaling across input voltage range |
| Sleep Current | ≤2µA (max) - enables multi-year battery operation in remote monitoring nodes |
| I²C Interface | Standard/Fast-mode (≤400kHz) - compatible with legacy and modern microcontrollers |
Pinout & Package
The LTC2471CMS#TRPBF is housed in a 12-lead plastic MSOP package (3mm × 4.9mm), with exposed pad not present (unlike DFN variant). Pin functions are electrically identical to the DFN version but mapped to MSOP pinout.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (Pin 1) | Reference output | 1.25V precision voltage source; must be bypassed with ≤0.1µF capacitor to GND for stability |
| COMP (Pin 2) | Reference compensation | Connects to same 0.1µF capacitor as REFOUT; controls reference startup time and noise |
| A0 (Pin 3) | I²C address select | Configures slave address: 0010100 (A0 = GND) or 1010100 (A0 = VCC) |
| GND (Pins 4, 7, 11) | Ground return | Three dedicated ground pins minimize ground bounce and improve PSRR |
| SCL (Pin 5) | I²C clock input | Slave-only interface; accepts up to 400kHz clock; no internal pull-up required |
| SDA (Pin 6) | I²C bidirectional data | Open-drain output during read; requires external 1.7kΩ pull-up to VCC |
| REF– (Pin 8) | Reference negative input | Tied to system ground or sensor ground sense point; defines zero-scale input |
| IN (Pin 9) | Analog input (single-ended) | Accepts 0V to VREF (0–1.25V); no differential pairing required |
| GND (Pin 10) | Input ground reference | Dedicated ground return for IN pin; separates signal and power ground paths |
| VCC (Pin 12) | Supply voltage | 2.7V–5.5V operation; requires 10µF + 0.1µF parallel bypassing at pin |
Key Features
| Feature | Design Value |
|---|---|
| No-latency output | Single-cycle conversion with immediate data availability-eliminates filter settling delays in multiplexed sensor arrays |
| Ultra-low input current | 50nA average sampling current-enables direct RC anti-aliasing without buffer amplifiers |
| Integrated reference | 1.25V ±0.1% initial accuracy, ±2ppm/°C drift (C-grade)-removes need for external reference IC or trimming |
| Configurable power modes | NAP (ADC off, ref on) and SLEEP (ADC + ref off) reduce current from 3.5mA to ≤2µA-ideal for duty-cycled sensing |
| Self-contained timing | On-chip oscillator-no crystal, resonator, or external clock required for basic operation |
Applications
| Industrial Process Monitoring | Environmental Sensor Node |
|---|---|
Use Scenario: Continuous measurement of pressure, flow, or level transducers in factory automation cabinets. IC Role / Device Role / Timing Role: Single-ended ADC digitizing 0–1.25V ratiometric outputs from bridge sensors; synchronized via I²C polling. Use Value: 16-bit resolution captures sub-millivolt changes; 2µA sleep current extends maintenance intervals in sealed enclosures. | Use Scenario: Battery-powered air quality station logging temperature, humidity, and CO₂ over weeks. IC Role / Device Role / Timing Role: Low-power ADC acquiring conditioned analog signals; triggered by MCU every 10 seconds. Use Value: 50nA input current avoids loading high-impedance sensor filters; internal reference ensures stable readings across temperature swings. |
| Embedded System Upgrade | Direct Temperature Sensing |
Use Scenario: Retrofitting legacy 12-bit ADC modules in medical diagnostic equipment with higher-resolution sensing. IC Role / Device Role / Timing Role: Drop-in replacement ADC interfacing to existing I²C bus; retains same PCB footprint (MSOP-12). Use Value: Pin- and software-compatible with LTC2471 variants; no firmware rewrite needed beyond resolution-aware scaling. | Use Scenario: Precision thermistor or RTD interface in HVAC control units requiring ±0.1°C accuracy. IC Role / Device Role / Timing Role: Digitizing ratiometric voltage from voltage-divider thermistor circuits referenced to internal 1.25V. Use Value: 1.25V reference drift ≤±2ppm/°C minimizes temperature-induced gain error; 0.01% gain error maintains calibration integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit I²C ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 4-channel differential input; no integrated reference; requires external 2.048V reference for full 16-bit linearity | Supports true differential measurements; lacks internal reference stability for ratiometric sensor use without added components | Choose when multi-channel scanning or programmable gain amplifier (PGA) functionality is required |
| MCP3424-E/ST | 4-channel, 18-bit resolution; internal 2.048V reference; fixed 15sps/60sps/240sps rates-no 833sps option | Better resolution but slower max rate; higher reference drift (15ppm/°C) limits temperature-critical accuracy | Prefer when ultra-high resolution outweighs speed and reference stability requirements |
Compared with ADS1115IDGSR and MCP3424-E/ST, the LTC2471CMS#TRPBF uniquely combines single-ended simplicity, integrated low-drift reference, and dual-speed flexibility-making it optimal for cost-sensitive, space-constrained, single-input sensor nodes where reference stability and low sleep current are critical.
Availability
LTC2471CMS#TRPBF is available at Aetrix Electronics and suitable for industrial process monitoring, environmental sensor nodes, and embedded system upgrades requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2471CMS#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2471CMS#TRPBF belongs to ADI's precision delta-sigma ADC product line, designed specifically for low-power, high-accuracy sensor digitization in space- and energy-constrained embedded systems.
FAQ
What is the operating temperature range for the LTC2471CMS#TRPBF?
The LTC2471CMS#TRPBF is rated for 0°C to 70°C (C-grade). This is confirmed by the "LTC2471CMS#TRPBF" ordering code in the Order Information table, where "CMS" denotes the MSOP package and "C" specifies the commercial temperature range. The device's reference drift is guaranteed at ±2ppm/°C within this range.
Does the LTC2471CMS#TRPBF require an external reference?
No, the LTC2471CMS#TRPBF does not require an external reference. It integrates a 1.25V precision reference with 0.1% initial accuracy and ±2ppm/°C max drift over temperature. REFOUT (Pin 1) provides this voltage directly, and COMP (Pin 2) must be bypassed with a 0.1µF capacitor to ensure stability-no external reference IC is needed.
How do I configure the LTC2471CMS#TRPBF for 833sps output rate?
To configure the LTC2471CMS#TRPBF for 833sps, write a 4-bit command to its I²C interface with SPD = 1 (bit 2) and EN1 = 1, EN2 = 0, SLP = 0. This sets the speed bit high while enabling programming mode. The default SPD = 0 yields 208sps; setting SPD = 1 reduces conversion time to 1.2ms and increases output rate to 833sps.
What is the maximum sleep current of the LTC2471CMS#TRPBF?
The maximum sleep current of the LTC2471CMS#TRPBF is 2µA, specified under "Sleep" condition in the Electrical Characteristics table. This occurs when both the ADC and internal reference are powered down (SLP = 1), and is guaranteed over the full 0°C to 70°C operating range. Typical nap current (ADC off, reference on) is 800µA.
Can the LTC2471CMS#TRPBF be used with a 3.3V microcontroller I²C bus?
Yes, the LTC2471CMS#TRPBF is fully compatible with 3.3V I²C buses. Its digital inputs (SCL, SDA, A0) accept VIH ≥ 0.7×VCC and VIL ≤ 0.3×VCC, and its open-drain SDA output is pulled up to the host's I²C bus voltage (e.g., 3.3V). With VCC = 3.3V, VIH(min) = 2.31V and VIL(max) = 0.99V-well within standard 3.3V logic levels.
LTC2471CMS#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 833
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- 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-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2471CMS#TRPBF FAQ
1.How can I place an order for LTC2471CMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2471CMS#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 LTC2471CMS#TRPBF reliable?
The price and inventory of LTC2471CMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2471CMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2471CMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2471CMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2471CMS#TRPBF?
LTC2471CMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2471CMS#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 LTC2471CMS#TRPBF?
For technical support, including LTC2471CMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2471CMS#TRPBF requirements.
6.How does Aetrix verify that LTC2471CMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2471CMS#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 LTC2471CMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2471CMS#TRPBF?
All LTC2471CMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2471CMS#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 LTC2471CMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2471CMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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