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Analog Devices Inc. LTC2470CMS#TRPBF
- Part No.:
- LTC2470CMS#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2470CMS#TRPBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,567
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Product details
Overview
LTC2470CMS#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit delta-sigma analog-to-digital converter with integrated 1.25V precision reference, single-ended input (0V to VREF), and SPI interface. It operates from 2.7V to 5.5V, delivers selectable 208sps or 833sps output rates, and achieves ±1mV offset error, ±0.01% gain error, and 2ppm/°C reference drift - enabling high-accuracy sensor digitization in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2470CMS#TRPBF datasheet, LTC2470CMS#TRPBF pinout, LTC2470CMS#TRPBF application, or LTC2470CMS#TRPBF equivalent, key selection criteria include its auto-shutdown current (200nA sleep mode), no-latency conversion architecture, internal oscillator (no external timing components), and MSOP-12 package compatibility with legacy board layouts requiring minimal redesign.
Technical Context
The LTC2470CMS#TRPBF implements a proprietary delta-sigma modulator with oversampling ratios of 8,192 (208sps) or 2,048 (833sps), relaxing anti-aliasing filter requirements. Its integrated reference features 1.247V–1.253V initial output and ±2ppm/°C drift over 0°C to 70°C, directly setting the ADC's full-scale range.
Conversion settling is single-cycle with no latency; after completion, the device automatically enters NAP mode (ADC powered down, reference active) or SLEEP mode (both powered down) based on SDI-programmed SLP bit. Input sampling draws only 50nA average current, enabling direct RC filtering without significant error.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct digital codes for high-fidelity sensor signal capture |
| Output Rate | Selectable 208sps or 833sps - supports both high-precision slow-scan and faster process monitoring |
| Reference Voltage | 1.25V ±2.5mV (±0.1% initial accuracy) - sets absolute input full-scale without external components |
| Offset Error | ±1mV (max) - ensures <0.1%FS error at zero input, critical for baseline-critical measurements |
| Gain Error | ±0.01% of full scale - maintains linearity across temperature and supply voltage variations |
| Supply Current | 3.5mA typical during conversion; 200nA max in sleep mode - enables battery-powered longevity |
| Reference Drift | ±2ppm/°C (C-grade) - contributes <±0.0002%FS/°C error, essential for uncalibrated thermal stability |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 4.9mm), exposed pad optional, rated for 0°C to 70°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (Pin 1) | Reference output | Nominally 1.25V precision voltage source; must be decoupled with ≤0.1µF capacitor to GND |
| COMP (Pin 2) | Reference compensation | Stabilizes internal reference; requires 0.1µF capacitor to GND - value must match or exceed REFOUT cap |
| CS (Pin 3) | Chip select (active low) | Enables SPI data transfer; HIGH places SDO in high-impedance state and ignores SDI/SCK inputs |
| SDI (Pin 4) | Serial data input | Accepts 4-bit command (EN1/EN2/SPD/SLP) to configure output rate and sleep mode |
| SCK (Pin 5) | Serial clock input | Drives SPI timing; supports up to 2MHz; data latched on rising edge, output shifted on falling edge |
| SDO (Pin 6) | Serial data output | 3-state output delivering 16-bit conversion result MSB-first; Hi-Z when CS = HIGH |
| GND (Pins 7, 11) | Ground | Primary analog/digital return; multiple pins reduce ground impedance and improve noise immunity |
| REF– (Pin 8) | Negative reference input | Sets ADC zero-scale point; tied directly to system ground or sensor ground sense |
| IN (Pin 9) | Single-ended analog input | Accepts 0V to VREF (0–1.25V) signals; no internal bias required |
| GND (Pin 10) | Input ground reference | Dedicated ground return for IN pin - improves PSRR and reduces common-mode error |
| VCC (Pin 12) | Positive supply | 2.7V–5.5V operation; requires 10µF + 0.1µF parallel bypassing at pin for stable conversion performance |
Key Features
| Feature | Design Value |
|---|---|
| No-latency delta-sigma architecture | Delivers one valid 16-bit result per conversion cycle with zero filter settling delay - ideal for multiplexed sensor arrays |
| Integrated 1.25V reference with 2ppm/°C drift | Eliminates external reference IC and calibration, reducing BOM count and long-term drift uncertainty in field-deployed systems |
| 50nA average input sampling current | Permits direct connection of RC anti-alias filters (e.g., 1kΩ + 0.1µF) with <1LSB added error - simplifies front-end design |
| Auto shutdown to 200nA sleep current | Extends battery life in portable instrumentation; reference and ADC power down together when SLP = 1 |
| Internal oscillator | Removes need for external crystal or clock generator - reduces layout area and EMI susceptibility |
Applications
| Environmental Sensor Node | Industrial Process Monitor |
|---|---|
|
Use Scenario: Measuring temperature, humidity, and gas concentration in remote outdoor enclosures with limited power budget. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog outputs from thermistors, capacitive humidity sensors, and electrochemical gas cells. Use Value: 200nA sleep current extends 2xAA battery life to >5 years; integrated reference ensures stable readings across –20°C to 60°C ambient range without recalibration. |
Use Scenario: Monitoring pressure, flow, and level in PLC-connected factory equipment with 4–20mA loop interfaces. IC Role / Device Role / Timing Role: High-accuracy front-end ADC converting isolated analog signals into digital values for microcontroller-based control logic. Use Value: ±1mV offset and ±0.01% gain error enable sub-0.1% total measurement uncertainty; SPI interface allows seamless integration with existing industrial MCU firmware stacks. |
| Portable Medical Instrument | Embedded System Upgrade |
|
Use Scenario: Battery-powered blood glucose meter or pulse oximeter requiring clinical-grade analog measurement fidelity. IC Role / Device Role / Timing Role: Precision digitizer for low-level biosensor signals, operating in intermittent acquisition mode. Use Value: Single-cycle conversion with no latency ensures real-time response to rapid physiological changes; 16-bit resolution captures subtle waveform features critical for diagnostic algorithms. |
Use Scenario: Retrofitting legacy 12-bit ADC modules in industrial controllers to meet updated accuracy standards without PCB redesign. IC Role / Device Role / Timing Role: Pin-compatible drop-in replacement for older MSOP-12 ADCs, leveraging identical footprint and SPI protocol. Use Value: MSOP-12 package and identical pinout to predecessor devices allow direct solder replacement; enhanced 16-bit resolution improves system SNR by 24dB without firmware changes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar precision ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 16-bit, I²C interface, no integrated reference, 860μA active current, 150nA shutdown | Requires external reference and level-shifting for 5V systems; better suited for multi-drop I²C bus architectures | Choose ADS1115IDGSR when I²C bus simplicity outweighs need for integrated reference and lowest sleep current |
| LTC2471IMS#TRPBF | Identical pinout/package; differential input (±VREF range), same reference specs and power modes | Supports bipolar signal acquisition (e.g., strain gauges, bridge sensors); not suitable for single-ended 0–VREF sources | Choose LTC2471IMS#TRPBF when measuring differential sensor outputs where common-mode rejection is required |
Compared with ADS1115IDGSR and LTC2471IMS#TRPBF, the LTC2470CMS#TRPBF uniquely combines single-ended input, integrated 1.25V reference with 2ppm/°C drift, and 200nA sleep current in an MSOP-12 package - making it optimal for cost-sensitive, space-constrained, battery-operated single-supply sensor nodes requiring minimal external components.
Availability
LTC2470CMS#TRPBF is available at Aetrix Electronics and suitable for environmental monitoring, industrial process control, and portable medical instrumentation requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC2470CMS#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. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC2470CMS#TRPBF belongs to Linear's precision delta-sigma ADC family, designed specifically for low-power, high-accuracy sensor digitization in space- and energy-constrained embedded systems - emphasizing ease of use, minimal external components, and guaranteed performance across temperature.
FAQ
What is the operating temperature range for the LTC2470CMS#TRPBF?
The LTC2470CMS#TRPBF is specified for 0°C to 70°C operation (C-grade). Its integrated 1.25V reference exhibits ±2ppm/°C maximum drift across this range, and all electrical characteristics - including ±1mV offset error and 3.5mA typical supply current - are guaranteed within these limits. The MSOP-12 package uses standard JEDEC moisture sensitivity level (MSL) 1 handling.
Does the LTC2470CMS#TRPBF require an external clock source?
No, the LTC2470CMS#TRPBF includes a fully integrated oscillator and requires no external clock components. This eliminates timing component count, board area, and potential EMI sources. The internal oscillator drives the delta-sigma modulator and digital logic, enabling full functionality with only VCC, GND, REFOUT/COMP decoupling, and SPI lines connected.
How does the LTC2470CMS#TRPBF achieve 200nA sleep current?
The LTC2470CMS#TRPBF reaches 200nA sleep current by powering down both the ADC core and the integrated reference simultaneously when the SLP bit is set high via SDI programming. In this state, only leakage paths remain active. The reference startup time after wake-up depends on COMP and REFOUT capacitor values - 12ms typical with 0.1µF caps - and the first conversion post-wake is invalid until stabilization.
Can the LTC2470CMS#TRPBF interface directly with a microcontroller's SPI peripheral?
Yes, the LTC2470CMS#TRPBF supports standard SPI timing with CPOL = 0 or CPOL = 1, 2–4 wire operation, and 2MHz max SCK frequency. It outputs 16-bit MSB-first data on SDO, accepts 4-bit configuration commands on SDI, and uses active-low CS for frame synchronization - matching common MCU SPI controller configurations without glue logic.
What is the input voltage range of the LTC2470CMS#TRPBF?
The LTC2470CMS#TRPBF has a single-ended input (IN pin) with a 0V to VREF range, where VREF is the internal 1.25V reference (1.247V–1.253V). Inputs below 0V clamp to code 0; inputs ≥VREF clamp to code 65535. No external biasing or level-shifting is needed, and the input draws only 50nA average sampling current - enabling direct RC filtering.
LTC2470CMS#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:
- 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-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2470CMS#TRPBF FAQ
1.How can I place an order for LTC2470CMS#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2470CMS#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 LTC2470CMS#TRPBF reliable?
The price and inventory of LTC2470CMS#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2470CMS#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2470CMS#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2470CMS#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2470CMS#TRPBF?
LTC2470CMS#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2470CMS#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 LTC2470CMS#TRPBF?
For technical support, including LTC2470CMS#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2470CMS#TRPBF requirements.
6.How does Aetrix verify that LTC2470CMS#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2470CMS#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 LTC2470CMS#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2470CMS#TRPBF?
All LTC2470CMS#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2470CMS#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 LTC2470CMS#TRPBF part is unused and in its original packaging.
Return procedure for LTC2470CMS#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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