My Inquiry
My Account
Analog Devices Inc. LTC2470IMS#PBF
- Part No.:
- LTC2470IMS#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 12-TSSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC2470IMS#PBF.pdf
- Description:
- IC ADC 16BIT SIGMA-DELTA 12MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,527
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2470IMS#PBF 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 architecture, and SPI interface. It delivers 208sps or 833sps selectable output rates, ±1 mV offset error, 0.01% gain error, and operates from 2.7V to 5.5V supply. It is used in industrial process control systems requiring low-power, high-accuracy voltage digitization with no latency in multiplexed sensor monitoring.
For engineers reviewing the LTC2470IMS#PBF datasheet, LTC2470IMS#PBF pinout, LTC2470IMS#PBF application, or LTC2470IMS#PBF equivalent, key selection criteria include its integrated 2ppm/°C max drift reference, 50nA average input sampling current enabling direct RC filter interfacing, 2μA max sleep current, and MSOP-12 package compatibility with space-constrained embedded instrumentation designs.
Technical Context
The LTC2470IMS#PBF implements a proprietary delta-sigma architecture with internal oscillator and no external timing components required. Its conversion cycle comprises three deterministic states-CONVERT, SLEEP/NAP, and DATA INPUT/OUTPUT-with automatic power-down after each conversion and user-configurable reference shutdown via SPI command.
It uses a 16-bit direct binary output format delivered serially via SDO on SCK falling edges, with MSB-first transmission and no filter settling delay. Input sampling employs a low-leakage scheme reducing average input current to 50nA, enabling direct connection to RC anti-aliasing networks without buffer amplifiers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - Provides 65,536 discrete digital codes for high-fidelity voltage measurement. |
| Reference Output Voltage | 1.25V ±3mV - Sets full-scale input range; enables ratiometric accuracy without external reference. |
| Reference Drift | ±5 ppm/°C (I-grade) - Ensures <±0.5 LSB drift over –40°C to +85°C operating range. |
| Offset Error | ±1 mV - Limits zero-scale error to ≤0.08% of full scale at 1.25V reference. |
| Gain Error | ±0.01% FS - Guarantees end-point linearity within 6.5 LSB across temperature. |
| Supply Current (Conversion) | 2.5 mA typical - Enables low-power operation while maintaining 16-bit performance. |
| Sleep Current | 2 μA maximum - Supports ultra-low-power wake-on-event sensing in battery-powered systems. |
| Input Sampling Current | 50 nA average - Allows direct RC filtering (e.g., 1kΩ + 0.1µF) with <1 LSB added error. |
Pinout & Package
Package: 12-lead plastic MSOP (3mm × 3mm), exposed pad optional, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFOUT (Pin 1) | Reference output | Nominally 1.25V; sets ADC full-scale range; requires 0.1µF bypass to GND for stability. |
| COMP (Pin 2) | Reference compensation | Connects 0.1µF capacitor to GND to optimize reference noise and startup time. |
| CS (Pin 3) | Chip select (active low) | Enables SDO output and initiates DATA INPUT/OUTPUT state; rising edge aborts transfer. |
| 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 synchronous SPI interface; supports up to 2 MHz; idle-high or idle-low configurable. |
| SDO (Pin 6) | Serial data output | Three-state output delivering 16-bit MSB-first result; active only when CS = LOW. |
| GND (Pins 7, 11) | Ground | Primary analog/digital return; multiple pins reduce ground impedance and improve PSRR. |
| REF– (Pin 8) | Negative reference input | Defines zero-input level; tied directly to system ground or sensor ground sense point. |
| IN (Pin 9) | Single-ended analog input | Accepts 0V to VREF (0–1.25V) input; no internal bias required for unipolar measurement. |
| GND (Pin 10) | Input ground reference | Dedicated ground return for IN pin; separates signal path from power ground. |
| VCC (Pin 12) | Positive supply | 2.7V–5.5V operation; requires 10µF + 0.1µF parallel bypassing for stable conversion performance. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency delta-sigma architecture | Delivers one-to-one correspondence between conversion completion and output data, eliminating filter delay in multiplexed applications. |
| User-selectable output rate | 208sps (8192× oversampling) or 833sps (2048× oversampling) - relaxes anti-aliasing filter requirements and adapts to dynamic signal bandwidth needs. |
| Integrated precision reference | 1.25V ±0.1% initial accuracy with ±5 ppm/°C max drift (I-grade) - removes need for external reference and associated layout complexity. |
| Ultra-low-power sleep mode | 2 μA max supply current with both ADC and reference powered down - extends battery life in intermittent-sampling systems. |
| Low-input-current sampling | 50 nA average input current - permits direct RC low-pass filtering without op-amp buffering, reducing BOM count and board area. |
| Single-cycle operation with auto-shutdown | Automatically powers down ADC after conversion; reference shutdown configurable via SPI - simplifies power sequencing and reduces software overhead. |
Applications
| Industrial Process Monitoring | Environmental Sensor Interface |
|---|---|
Use Scenario: Continuous monitoring of 4–20mA loop transmitters, RTD bridges, or thermocouple signal conditioners in PLC I/O modules. IC Role / Device Role / Timing Role: Single-ended ADC digitizing conditioned analog outputs with integrated reference eliminating calibration drift. Use Value: 16-bit resolution and ±5 ppm/°C reference drift ensure <±0.01% total measurement uncertainty over industrial temperature range. |
Use Scenario: Battery-powered air quality sensors measuring CO₂, humidity, or particulate matter using resistive or capacitive transducers. IC Role / Device Role / Timing Role: Low-power ADC capturing slow-varying environmental signals with programmable 208sps/833sps sampling to match sensor response time. Use Value: 2 μA sleep current and automatic shutdown enable multi-year operation on coin-cell batteries without complex power management firmware. |
| Embedded System Health Monitoring | Portable Instrumentation Front-End |
Use Scenario: Real-time voltage/current monitoring of power rails, battery cells, or motor windings in medical or test equipment. IC Role / Device Role / Timing Role: Precision ADC providing ratiometric measurements referenced to its own stable 1.25V output for immunity to supply variation. Use Value: 0.01% gain error and ±1 mV offset error ensure accurate health metrics without per-unit factory calibration. |
Use Scenario: Handheld multimeters or data loggers digitizing DC voltage inputs with manual range selection and autoranging capability. IC Role / Device Role / Timing Role: Core ADC engine accepting 0–1.25V input with no external reference, supporting flexible front-end scaling via programmable gain amplifiers. Use Value: Direct RC filter compatibility (1kΩ + 0.1µF) eliminates op-amp stages, reducing size, cost, and noise in portable form factors. |
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 |
|---|---|---|---|
| ADS1115IDGSR | 4-channel differential input; I²C interface; no integrated reference; 16-bit resolution; 860sps max rate. | Requires external reference and level-shifting for 5V systems; better suited for multi-channel, low-pin-count I²C bus systems. | Select when multi-input scanning and I²C simplicity outweigh need for integrated reference and lowest sleep current. |
| MAX11200EUB+ | Single-ended only; SPI interface; integrated 2.048V reference; 16-bit resolution; 120sps max rate; 1.2 µA sleep current. | Lower max sample rate; higher reference voltage limits input range without attenuation; superior sleep current but slower throughput. | Select when ultra-low sleep power dominates over speed and 1.25V reference alignment is critical for existing signal chain design. |
Compared with ADS1115IDGSR and MAX11200EUB+, the LTC2470IMS#PBF uniquely combines integrated 1.25V reference with 833sps capability and 2μA sleep current in an MSOP-12 package-making it optimal for space-constrained, single-input, low-power industrial sensors where reference stability and SPI compatibility are prioritized.
Availability
LTC2470IMS#PBF is available at Aetrix Electronics and suitable for industrial process control, environmental sensor interfaces, and embedded system health monitoring requiring stable component supply across extended temperature ranges.
Supply support for LTC2470IMS#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 LTC2470IMS#PBF belongs to the Linear Technology Precision Delta-Sigma ADC family, designed specifically for low-power, high-accuracy measurement in space- and energy-constrained industrial and instrumentation applications.
FAQ
What is the operating temperature range for the LTC2470IMS#PBF?
The LTC2470IMS#PBF is specified for –40°C to +85°C operation (I-grade). This rating is confirmed in the "Order Information" table and validated across all electrical characteristics including reference drift (±5 ppm/°C max), offset error (±1 mV), and supply current (2.5 mA typ at conversion).
Does the LTC2470IMS#PBF require an external crystal or oscillator?
No, the LTC2470IMS#PBF includes an integrated oscillator and requires no external timing components. The datasheet explicitly states "Internal Oscillator-No External Components Required" under Features and confirms this in the Block Diagram and Applications Information sections.
How does the LTC2470IMS#PBF handle input overrange and underrange conditions?
The LTC2470IMS#PBF clamps output codes at extremes: for inputs below 0V, it outputs 0x0000; for inputs ≥ VREF (1.25V), it outputs 0xFFFF. This behavior is documented in the "Input Voltage Range (LTC2470)" section and Table 1, ensuring predictable saturation without damage or undefined states.
Can the LTC2470IMS#PBF be used with a 3.3V microcontroller SPI interface?
Yes - the LTC2470IMS#PBF supports digital I/O voltages from 0.3V to VCC+0.3V, and its VIH/VIL thresholds (VCC–0.3V / 0.3V) and VOH/VOL specs (VCC–0.5V / 0.4V @ load) are fully compatible with standard 3.3V logic levels when VCC = 3.3V, as verified in the "Digital Inputs and Outputs" table.
What is the conversion time for the LTC2470IMS#PBF at 833sps mode?
At 833sps output rate (SPD = 1), the LTC2470IMS#PBF has a nominal conversion time of 1 ms, with guaranteed min/max of 0.8 ms / 1.2 ms over the full –40°C to +85°C range, as specified in the "Timing Characteristics" table under parameter tCONV2.
LTC2470IMS#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 12-TSSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 12-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2470IMS#PBF FAQ
1.How can I place an order for LTC2470IMS#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2470IMS#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 LTC2470IMS#PBF reliable?
The price and inventory of LTC2470IMS#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2470IMS#PBF is usually 5 days.
3.What payment methods are accepted for LTC2470IMS#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2470IMS#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2470IMS#PBF?
LTC2470IMS#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2470IMS#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 LTC2470IMS#PBF?
For technical support, including LTC2470IMS#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2470IMS#PBF requirements.
6.How does Aetrix verify that LTC2470IMS#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2470IMS#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 LTC2470IMS#PBF meets industry standards.
7.What is the process for return or replacement of LTC2470IMS#PBF?
All LTC2470IMS#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2470IMS#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 LTC2470IMS#PBF part is unused and in its original packaging.
Return procedure for LTC2470IMS#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2470IMS#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…
