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Analog Devices Inc. LTC2452CTS8#TRMPBF
- Part No.:
- LTC2452CTS8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2452CTS8#TRMPBF.pdf
- Description:
- IC ADC 16BIT SIG-DELTA TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:1,552
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Product details
Overview
LTC2452CTS8#TRMPBF from Analog Devices (formerly Linear Technology) is a fully differential, 16-bit delta-sigma analog-to-digital converter with SPI interface, operating from 2.7V to 5.5V supply and delivering 60 conversions per second. It features ±VREF differential input range, integrated oscillator, and ultra-low 0.2µA sleep current. Designed for precision sensor interfacing in space-constrained industrial monitoring systems.
For engineers reviewing the LTC2452CTS8#TRMPBF datasheet, LTC2452CTS8#TRMPBF pinout, LTC2452CTS8#TRMPBF application, or LTC2452CTS8#TRMPBF equivalent, this page delivers verified technical context, package-specific pin definitions, real-world use-value mapping, and validated alternative options - all grounded in the official LTC2452 datasheet and product documentation.
Technical Context
The LTC2452CTS8#TRMPBF implements a no-latency delta-sigma modulator core with continuous internal offset and full-scale calibration, ensuring accuracy over temperature without user intervention. Its proprietary input sampling scheme reduces average input current to 50nA and eliminates inter-pin leakage, enabling direct RC filter interfacing with <1LSB error.
It operates in three deterministic states - CONVERT (16.6ms nominal), SLEEP (<0.2µA), and DATA OUTPUT - controlled via a 3-wire SPI interface (CS, SCK, SDO) supporting both CPOL = 0 and CPOL = 1 modes. Conversion status can be monitored by holding SCK HIGH and sampling SDO during CS LOW.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit signed binary output with no missing codes - guarantees monotonicity and full dynamic range utilization. |
| Conversion Rate | 60 conversions per second (16.6ms typical conversion time) - enables real-time monitoring of slow-varying physical signals. |
| Differential Input Range | ±VREF, where VREF = 2.5V to VCC - supports rail-to-rail referenced measurements with external or internally derived reference. |
| Supply Current | 800µA during conversion, <0.2µA in sleep mode - enables battery-powered operation with sub-50µW average power at 1Hz read rate. |
| Integral Nonlinearity | ±1 LSB (typical), ±10 LSB (max) - ensures high-precision digitization critical for instrumentation-grade applications. |
| Input Sampling Current | 50nA average - allows use of high-impedance sensor sources and simple RC anti-aliasing filters without gain error. |
| SPI Interface | 3-wire, CPOL configurable, 2MHz max SCK frequency - simplifies microcontroller integration without requiring dedicated ADC peripherals. |
Pinout & Package
Package: 8-lead plastic TSOT-23 (3mm × 1.75mm footprint), lead-free, exposed pad connected to GND. Operating temperature range: 0°C to 70°C (C-grade).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SCK (Pin 1) | Serial clock input | Synchronizes serial data output; supports idle-high (CPOL=1) or idle-low (CPOL=0) modes; 2MHz max frequency. |
| GND (Pin 2) | Ground reference | Main analog/digital ground connection; exposed pad (Pin 9) must be soldered to PCB ground plane for thermal and noise performance. |
| REF (Pin 3) | Reference voltage input | Sets full-scale range; accepts 2.5V to VCC; shorting to VCC enables simplest single-supply operation. |
| VCC (Pin 4) | Positive supply | 2.7V–5.5V operation; requires local decoupling with 0.1µF ceramic + 10µF ceramic capacitors placed adjacent to pins. |
| IN– (Pin 5) | Negative differential input | Part of fully differential input pair; exhibits <10nA DC leakage and 0.35pF sampling capacitance - minimizes loading on sensors. |
| IN+ (Pin 6) | Positive differential input | Paired with IN–; same leakage and capacitance specs; supports overrange/underrange up to ±31LSB total for ±VREF inputs. |
| CS (Pin 7) | Active-low chip select | Enables SDO output when LOW; places SDO in high-Z when HIGH; rising edge triggers new conversion after data transfer. |
| SDO (Pin 8) | Three-state serial data output | Outputs 16-bit result MSB-first; indicates conversion status (HIGH = in progress, LOW = complete) when CS LOW and SCK HIGH. |
Key Features
| Feature | Design Value |
|---|---|
| No-latency delta-sigma architecture | Eliminates filter settling delay - each conversion yields one valid output code with 1:1 correspondence, ideal for multiplexed sensor arrays. |
| Continuous internal calibration | Per-conversion offset and full-scale correction - maintains accuracy across temperature (-40°C to 85°C) and time without external recalibration. |
| Ultra-low input sampling current | 50nA average - enables direct connection to high-impedance sources (e.g., thermocouples, RTDs, pH electrodes) without buffer amplifiers. |
| Integrated oscillator | No external timing components required - reduces BOM count, PCB area, and layout sensitivity while guaranteeing stable conversion timing. |
| Configurable SPI interface | Supports both CPOL=0 and CPOL=1 modes - interoperable with diverse microcontrollers including ARM Cortex-M, PIC, and MSP430 families. |
Applications
| Environmental Monitoring | Industrial Process Control |
|---|---|
|
Use Scenario: Measuring temperature, humidity, and gas concentration using low-power, high-impedance sensors in remote field nodes. IC Role / Device Role / Timing Role: Precision ADC capturing differential outputs from thermistors and electrochemical cells with minimal power overhead. Use Value: 0.2µA sleep current and 50nA input bias enable multi-year battery life; ±1 LSB INL ensures compliance with Class I environmental accuracy standards. |
Use Scenario: Closed-loop control of pressure, flow, and level in factory automation systems with 4–20mA or bridge sensor interfaces. IC Role / Device Role / Timing Role: High-resolution digitizer for strain gauge bridges and isolated current sense amplifiers in PLC analog input modules. Use Value: Fully differential input rejects common-mode noise from motor drives; ±VREF range accommodates 5V-referenced industrial signal chains. |
| Data Acquisition | Embedded ADC Upgrades |
|
Use Scenario: Portable multimeters and handheld test equipment requiring compact, self-contained 16-bit measurement capability. IC Role / Device Role / Timing Role: Standalone ADC replacing legacy 12-bit parts in battery-powered DMM front-ends with SPI host interface. Use Value: TSOT-23 package (3mm × 1.75mm) saves >60% board area vs. SOIC-8; integrated oscillator removes crystal and load capacitors. |
Use Scenario: Retrofitting legacy 8- or 12-bit microcontroller-based systems with higher resolution sensing without changing firmware architecture. IC Role / Device Role / Timing Role: External SPI ADC augmenting limited on-chip ADC resources in MCU-based sensor nodes. Use Value: Pin-compatible replacement path for similar-footprint ADCs; 3-wire interface reuses existing GPIO/SPI lines with no protocol translation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit delta-sigma ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS1115IDGSR | 4-channel, I²C interface, programmable gain amplifier (PGA), 860SPS max, 16-bit no missing codes | Requires I²C bus and external PGA configuration; lacks integrated oscillator and true differential input per channel | Preferred when multi-channel scanning or gain flexibility is needed; not drop-in for SPI-only or single-channel high-accuracy use cases |
| MCP3424-E/ST | 4-channel, I²C interface, 18-bit resolution, internal reference, 15SPS (18-bit) to 240SPS (12-bit) | Slower conversion rate; fixed internal 2.048V reference limits input range flexibility; no external REF pin | Chosen for ultra-high resolution in low-speed applications; unsuitable where ±VREF scaling or 60SPS throughput is required |
Compared with ADS1115IDGSR and MCP3424-E/ST, the LTC2452CTS8#TRMPBF offers superior single-channel speed (60SPS), true differential input with external reference support, and lowest system-level component count due to integrated oscillator - making it optimal for compact, high-accuracy, SPI-based sensor nodes.
Availability
LTC2452CTS8#TRMPBF is available at Aetrix Electronics and suitable for environmental monitoring, industrial process control, and portable data acquisition requiring stable component supply, long-lifecycle support, and guaranteed C-grade temperature performance (0°C to 70°C).
Supply support for LTC2452CTS8#TRMPBF 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 acquired Linear Technology in 2017 and maintains its precision analog portfolio. Linear Technology was renowned for high-performance signal conditioning ICs, especially delta-sigma ADCs and power management solutions.
The LTC2452CTS8#TRMPBF belongs to Linear's ultra-low-power, high-accuracy delta-sigma ADC family, designed specifically for space-constrained, battery-operated instrumentation and sensor interface applications demanding no-latency, calibrated performance.
FAQ
What is the operating temperature range for the LTC2452CTS8#TRMPBF?
The LTC2452CTS8#TRMPBF is specified for the commercial temperature range of 0°C to 70°C (C-grade). This is confirmed by the "C" suffix in the part number and the order information table listing LTC2452CTS8#TRMPBF under "0°C to 70°C". It uses the TSOT-23 package with θJA = 140°C/W.
Does the LTC2452CTS8#TRMPBF require an external crystal or oscillator?
No, the LTC2452CTS8#TRMPBF includes a fully integrated oscillator that requires no external components. This is explicitly stated in the Features section and confirmed in the Applications Information chapter, which notes "Internal Oscillator-No External Components Required" and eliminates timing component dependencies.
How does the LTC2452CTS8#TRMPBF achieve ultra-low input bias current?
The LTC2452CTS8#TRMPBF achieves 50nA average input sampling current through a proprietary input sampling scheme that reduces charge injection and switching transients. This is documented in the Applications Information section and supported by the 0.35pF input capacitance and <10nA DC leakage specifications for IN+ and IN– pins.
Can the LTC2452CTS8#TRMPBF operate with a 3.3V supply and 2.5V reference?
Yes, the LTC2452CTS8#TRMPBF supports VCC = 2.7V to 5.5V and VREF = 2.5V to VCC. A 3.3V supply with 2.5V reference is within spec and yields a ±2.5V differential input range - confirmed in the Electrical Characteristics table and Analog Inputs section.
What is the function of the exposed pad on the LTC2452CTS8#TRMPBF TSOT-23 package?
The exposed pad (Pin 9) on the LTC2452CTS8#TRMPBF is electrically connected to GND and must be soldered to the PCB ground plane. The datasheet states "Exposed Pad (Pin 9) IS GND, MUST BE SOLDERED TO PCB" - it serves thermal dissipation and noise reduction functions, not signal routing.
LTC2452CTS8#TRMPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-8 Thin, TSOT-23-8
- Packaging:
- Tape & Reel (TR)
- 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:
- External
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2452CTS8#TRMPBF FAQ
1.How can I place an order for LTC2452CTS8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2452CTS8#TRMPBF 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 LTC2452CTS8#TRMPBF reliable?
The price and inventory of LTC2452CTS8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2452CTS8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2452CTS8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2452CTS8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2452CTS8#TRMPBF?
LTC2452CTS8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2452CTS8#TRMPBF 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 LTC2452CTS8#TRMPBF?
For technical support, including LTC2452CTS8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2452CTS8#TRMPBF requirements.
6.How does Aetrix verify that LTC2452CTS8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2452CTS8#TRMPBF 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 LTC2452CTS8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2452CTS8#TRMPBF?
All LTC2452CTS8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2452CTS8#TRMPBF, 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 LTC2452CTS8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2452CTS8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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