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Analog Devices Inc. LTC2361ITS8#TRPBF
- Part No.:
- LTC2361ITS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2361ITS8#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:4,192
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Product details
Overview
LTC2361ITS8#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 250ksps successive-approximation ADC in an 8-lead TSOT-23 package, operating from a single 2.35V–3.6V supply with 0.75mA typical supply current at full rate and 0.1μA sleep current. It features a dedicated external reference input (VREF), independent digital output supply (OVDD), SPI/MICROWIRE-compatible serial interface, and supports analog input spans down to 1.4V for direct sensor interfacing in portable instrumentation.
For engineers reviewing the LTC2361ITS8#TRPBF datasheet, LTC2361ITS8#TRPBF pinout, LTC2361ITS8#TRPBF application, or LTC2361ITS8#TRPBF equivalent, key selection considerations include its 250ksps throughput, 73dB SNR at 124kHz input, –84dB THD, 12-bit no-missing-codes performance, and guaranteed operation across –40°C to +85°C industrial temperature range.
Technical Context
The LTC2361ITS8#TRPBF employs an internal sample-and-hold with 0.5μs acquisition time and 3μs conversion time, enabling precise sampling of fast-changing signals without external hold circuitry. Its switched-capacitor SAR architecture delivers 12-bit resolution with ±0.25LSB typical integral linearity error and 0.32LSB RMS transition noise.
It uses a 3-wire serial interface where CONV initiates conversion on the rising edge and enables SDO output on the falling edge; data is clocked out MSB-first on SDO's falling SCK edge. OVDD (1V to VDD) independently sets digital output voltage level, allowing interoperability with 1.8V/2.5V/3V logic systems while VREF (1.4V to VDD) defines the analog full-scale range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function and deterministic code mapping for control-loop feedback. |
| Sampling Rate | 250ksps maximum - supports real-time monitoring of signals up to 124kHz (Nyquist-limited) with 73dB SINAD. |
| SNR / THD | 73dB SNR and –84dB THD at 124kHz input - enables high-fidelity digitization of audio-band and sensor signals with minimal noise floor elevation. |
| Supply Current | 0.75mA at 250ksps; drops to 0.1μA in sleep mode - allows battery-powered operation for >1 year in low-duty-cycle sensing applications. |
| Analog Input Range | 0V to VREF, with VREF adjustable from 1.4V to VDD - permits direct connection to low-voltage sensors (e.g., 1.8V-output thermistors) without gain stages. |
| Reference Input | Dedicated VREF pin (TS8 package) - decouples reference accuracy from VDD noise, improving PSRR and enabling precision ratiometric measurements. |
| Digital I/O Supply | OVDD pin (1V to VDD) - isolates digital output swing from analog supply, supporting mixed-voltage system interfacing without level shifters. |
Pinout & Package
Package: 8-lead plastic TSOT-23 (TS8), 2.9mm × 1.6mm × 0.8mm, –40°C to +85°C operating temperature range.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Analog power supply | 2.35V–3.6V supply for core ADC and sample-and-hold; bypass required with 2.2μF ceramic capacitor. |
| VREF (Pin 2) | External reference input | Defines full-scale analog input range (0V to VREF); supports 1.4V–VDD range for flexible sensor scaling. |
| GND (Pin 3) | Analog ground | Must connect directly to solid ground plane; separates analog return path from digital noise sources. |
| AIN (Pin 4) | Analog input | Single-ended, high-impedance input referenced to GND; accepts 0V to VREF with ±1μA leakage. |
| OVDD (Pin 5) | Digital output supply | Sets SDO output voltage level (1V to VDD); enables direct interface to 1.8V/2.5V/3V logic without external buffers. |
| SDO (Pin 6) | Serial data output | Three-state, MSB-first SPI-compatible output; transitions on falling SCK edge; enters Hi-Z when CONV = high. |
| SCK (Pin 7) | Serial clock input | Accepts up to 25MHz clock; timing-critical for data capture; requires 40% duty cycle per spec. |
| CONV (Pin 8) | Convert control input | Active-high signal; rising edge starts conversion, falling edge enables SDO output and powers up device. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-power sleep mode | 0.1μA typical supply current - reduces average power in burst-sampling systems by >99.9% between conversions. |
| Independent OVDD supply | 1V to VDD digital output rail - eliminates need for level translators when interfacing with lower-voltage microcontrollers. |
| Reduced-span analog input | 1.4V minimum VREF - enables 342μV LSB resolution with low-voltage sensors, avoiding amplifier noise and offset errors. |
| No data latency | Direct output after conversion - eliminates pipeline delay, critical for closed-loop control and real-time event triggering. |
| Guaranteed industrial temp range | –40°C to +85°C operation - validated across full temperature range for reliability in automotive and industrial environments. |
Applications
| Portable Data Loggers | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure over weeks on coin-cell batteries. IC Role / Device Role / Timing Role: Primary analog front-end ADC acquiring sensor outputs at 10–100Hz with automatic sleep/wake cycling. Use Value: 0.1μA sleep current extends battery life beyond 2 years; 1.4V–VDD VREF flexibility accommodates diverse sensor output ranges without external amplification. | Use Scenario: Engine control unit (ECU) subsystem measuring throttle position, coolant temperature, and intake air pressure. IC Role / Device Role / Timing Role: High-reliability, temperature-stable ADC performing periodic diagnostics and closed-loop feedback sampling. Use Value: Guaranteed –40°C to +85°C operation ensures consistent 12-bit accuracy across engine thermal cycles; OVDD support simplifies integration with 3.3V MCU peripherals. |
| Industrial Process Controllers | Medical Wearables |
Use Scenario: PLC analog input module digitizing 4–20mA loop signals and thermocouple outputs in factory automation. IC Role / Device Role / Timing Role: Precision SAR ADC with external reference for ratiometric measurement of conditioned transducer signals. Use Value: Dedicated VREF pin enables true ratiometric operation against stable external references, reducing sensitivity to supply drift and improving long-term calibration stability. | Use Scenario: ECG patch capturing biopotential signals with ultra-low power budget and small form factor constraints. IC Role / Device Role / Timing Role: Low-noise, low-power ADC sampling bio-sensors at 250ksps for on-device FFT analysis. Use Value: 73dB SNR at 124kHz preserves signal integrity for arrhythmia detection; TSOT-23 footprint minimizes PCB area in space-constrained wearable designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7953IRGER | 12-bit, 1MSPS, 16-channel multiplexed SAR ADC with integrated sequencer; requires external reference and 2.7–5.25V supply. | Designed for multi-sensor data acquisition with hardware sequencing; larger QFN-24 package. | Select when channel multiplexing and autonomous scan control are required; not suitable for space-constrained single-channel use cases. |
| MAX11100ETE+ | 12-bit, 500ksps, TSOT-23-6 package; no VREF or OVDD pins - uses VDD as both analog reference and digital supply. | Limited to VDD-referenced inputs and 3V logic compatibility; lacks independent reference and output supply flexibility. | Select for lowest-cost, smallest-footprint alternative when VDD-referencing and 3V-only digital interface are acceptable. |
Compared with LTC2361ITS8#TRPBF, ADS7953IRGER offers higher speed and channel count but sacrifices size and power efficiency, while MAX11100ETE+ matches the TSOT footprint and speed but removes VREF/OVDD flexibility needed for precision ratiometric and mixed-voltage designs.
Availability
LTC2361ITS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, automotive sensor modules, industrial process controllers, and medical wearables requiring stable component supply, guaranteed –40°C to +85°C operation, and long-term production continuity.
Supply support for LTC2361ITS8#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 LTC2361ITS8#TRPBF belongs to ADI's legacy Linear Technology precision data converter family, engineered for ultra-low-power, high-speed, single-supply SAR ADC applications in space- and energy-constrained systems.
FAQ
What is the maximum sampling rate supported by the LTC2361ITS8#TRPBF?
The LTC2361ITS8#TRPBF supports a maximum sampling rate of 250ksps, verified across the full –40°C to +85°C temperature range. At this rate, it achieves 73dB SNR and –84dB THD with a 124kHz input sine wave, and completes each conversion in 3μs with 1μs acquisition time.
Does the LTC2361ITS8#TRPBF require an external reference voltage?
Yes, the LTC2361ITS8#TRPBF requires an external reference voltage applied to the VREF pin (Pin 2). VREF sets the full-scale analog input range (0V to VREF) and can be configured from 1.4V up to VDD. This dedicated reference input decouples accuracy from VDD noise and enables precision ratiometric measurements.
Can the LTC2361ITS8#TRPBF interface directly with a 1.8V microcontroller?
Yes, the LTC2361ITS8#TRPBF can interface directly with a 1.8V microcontroller using its OVDD pin (Pin 5). By supplying 1.8V to OVDD, the SDO output swing is constrained to 0–1.8V logic levels, eliminating the need for external level-shifting circuitry while maintaining full 12-bit data integrity.
What is the sleep current specification for the LTC2361ITS8#TRPBF?
The LTC2361ITS8#TRPBF draws 0.1μA typical supply current in sleep mode across the –40°C to +85°C temperature range. Sleep mode is automatically entered after conversion completion when CONV remains high, shutting down all bias currents except leakage, making it ideal for battery-operated intermittent-sampling applications.
Is the LTC2361ITS8#TRPBF pin-compatible with other members of the LTC236x family?
Yes, the LTC2361ITS8#TRPBF shares identical pinout and package (TS8) with LTC2360ITS8#TRPBF and LTC2362ITS8#TRPBF. All three devices use the same 8-pin TSOT-23 layout, enabling drop-in replacement based on required sampling rate (100ksps/250ksps/500ksps) without PCB redesign.
LTC2361ITS8#TRPBF 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:
- 12
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 2.35V ~ 3.6V
- Voltage - Supply, Digital:
- 2.35V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2361ITS8#TRPBF FAQ
1.How can I place an order for LTC2361ITS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2361ITS8#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 LTC2361ITS8#TRPBF reliable?
The price and inventory of LTC2361ITS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2361ITS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2361ITS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2361ITS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2361ITS8#TRPBF?
LTC2361ITS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2361ITS8#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 LTC2361ITS8#TRPBF?
For technical support, including LTC2361ITS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2361ITS8#TRPBF requirements.
6.How does Aetrix verify that LTC2361ITS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2361ITS8#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 LTC2361ITS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2361ITS8#TRPBF?
All LTC2361ITS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2361ITS8#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 LTC2361ITS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC2361ITS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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