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Analog Devices Inc. LTC2365ITS8#TRMPBF
- Part No.:
- LTC2365ITS8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2365ITS8#TRMPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:643
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Product details
Overview
LTC2365ITS8#TRMPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 1 Msps successive-approximation analog-to-digital converter (SAR ADC) in an 8-lead TSOT-23 package, operating from a single 2.35V–3.6V supply with 2 mA typical supply current. It features a dedicated external reference input (VREF), 1V–3.6V digital output supply (OVDD), SPI/MICROWIRE-compatible serial interface, and –40°C to +85°C industrial temperature range - enabling direct sensor interfacing in compact, battery-powered data acquisition systems.
For engineers reviewing the LTC2365ITS8#TRMPBF datasheet, LTC2365ITS8#TRMPBF pinout, LTC2365ITS8#TRMPBF application, or LTC2365ITS8#TRMPBF equivalent, key selection criteria include its 1 Msps sampling rate with 72.8 dB SINAD at 461 kHz, 0.34 LSB RMS transition noise, sleep mode (0.1 µA), and TSOT-23-8 pin compatibility with VREF/OVDD flexibility for mixed-voltage system integration.
Technical Context
The LTC2365ITS8#TRMPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, supporting single-ended analog input (0 V to VREF) referenced to GND. Its serial interface uses CS-active-low framing, SCK-synchronized falling-edge data capture, and a fixed 16-cycle transfer format (2 leading zeros + 12 data bits + 2 trailing zeros).
It operates with VREF ranging from 1.4 V to VDD and OVDD independently configurable from 1 V to VDD - allowing full-scale resolution of 342 µV at 1.4 V reference and logic-level compatibility with 1.8 V/2.5 V/3 V digital hosts. Acquisition time is 181.5 ns and conversion time is 818.5 ns, yielding minimum throughput time of 1000 ns.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonicity and full code coverage across temperature. |
| Sampling Rate | 1 Msps maximum - supports real-time digitization of signals up to ~461 kHz while maintaining ≥72.8 dB SINAD. |
| SINAD | 72.8 dB at fIN = 461 kHz - enables >11.8 effective bits (ENOB) for precision measurement applications. |
| Supply Current | 2 mA typical at 1 Msps - achieves 6 mW power dissipation at 3 V, suitable for low-power portable instrumentation. |
| Sleep Current | 0.1 µA typical - reduces standby power by 4 orders of magnitude versus active mode for duty-cycled sensing. |
| VREF Range | 1.4 V to VDD - permits reduced full-scale spans (e.g., 1.4 V yields 342 µV LSB) without external gain stages. |
| OVDD Range | 1 V to VDD - decouples digital I/O voltage from analog supply, enabling interoperability with 1.8 V FPGA or MCU interfaces. |
Pinout & Package
Package: 8-lead plastic TSOT-23 (3.0 mm × 1.7 mm × 0.8 mm), –40°C to +85°C operating temperature range, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Analog supply input | 2.35 V–3.6 V main supply; defines internal biasing and sets upper limit for VREF; requires 10 µF ceramic bypass to GND. |
| VREF (Pin 2) | External reference input | Defines full-scale analog input range (0 V to VREF); supports 1.4 V–VDD range; requires 4.7 µF ceramic bypass. |
| GND (Pin 3) | Analog ground reference | Common return for analog circuitry; must connect directly to solid ground plane to minimize noise coupling. |
| AIN (Pin 4) | Analog input | Single-ended input referenced to GND; accepts 0 V to VREF; high-impedance (±1 µA leakage) with 4 pF capacitance during conversion. |
| OVDD (Pin 5) | Digital output supply | Controls SDO output swing (1 V–VDD); enables level-shifting to match host logic (e.g., 1.8 V ASIC or 3 V microcontroller). |
| SDO (Pin 6) | Serial data output | Three-state, MSB-first output; delivers 16-bit frame (2 leading zeros + 12 data bits + 2 trailing zeros); Hi-Z when CS = HIGH. |
| SCK (Pin 7) | Serial clock input | Accepts up to 16 MHz clock; falling edge clocks out data; timing-critical for setup/hold compliance (t4 = 15 ns, t7 = 5 ns). |
| CS (Pin 8) | Chip select input | Active-low signal initiating conversion and framing data transfer; falling edge triggers sample-and-hold hold mode and enables SDO. |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated VREF and OVDD pins | Enables independent scaling of analog full-scale and digital I/O levels - eliminates level-shifters in mixed-voltage systems. |
| 12-bit no-missing-code performance | Guarantees monotonic transfer function over temperature (–40°C to +85°C), critical for closed-loop control and metrology. |
| Low 0.34 LSB RMS transition noise | Corresponds to 72.7 dB SNR at DC - ensures stable histogram distribution and minimal code flicker in static measurements. |
| SPI/MICROWIRE-compatible interface | Requires only three wires (CS, SCK, SDO); no external drivers needed; compatible with standard MCU peripheral libraries. |
| 1000 ns minimum throughput time | Supports deterministic sampling intervals in time-critical applications such as motor phase current monitoring or ultrasonic echo processing. |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure over weeks using intermittent wake-up cycles. IC Role / Device Role / Timing Role: SAR ADC digitizing conditioned sensor outputs at 1 ksps during active periods; enters 0.1 µA sleep mode between samples. Use Value: 2 mA active current and sub-µA sleep draw extend battery life beyond 1 year on two AA cells; TSOT-23-8 footprint minimizes PCB area. | Use Scenario: 4–20 mA loop-powered transmitters converting analog process variables (e.g., flow, level) into digital output for HART or Modbus RTU. IC Role / Device Role / Timing Role: Precision ADC capturing ratiometric bridge or thermocouple signals with external VREF derived from loop voltage. Use Value: 1.4 V minimum VREF allows operation down to 3.3 V loop supply; 72.8 dB SINAD ensures <0.01% measurement uncertainty. |
| Medical Point-of-Care Devices | Automotive Cabin Sensors |
Use Scenario: Handheld pulse oximeters acquiring photodiode signals under variable ambient light conditions. IC Role / Device Role / Timing Role: High-SNR ADC sampling dual-wavelength LED/photodiode channels synchronously at 1 ksps with correlated double sampling. Use Value: 72.8 dB SINAD at 461 kHz rejects switching noise from LED drivers; TSOT-23-8 eases layout near optical components. | Use Scenario: Occupancy detection modules using capacitive or IR sensors in automotive HVAC or infotainment systems. IC Role / Device Role / Timing Role: Low-power ADC digitizing analog sensor outputs during vehicle sleep mode wake-ups (e.g., door handle proximity). Use Value: 0.1 µA sleep current meets OEM quiescent current budgets (<10 µA total module); –40°C to +85°C rating ensures reliability across cabin thermal zones. |
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 |
|---|---|---|---|
| ADS7822IDR | 12-bit, 200 ksps, single-supply 2.7–5.25 V; no separate OVDD or VREF pins; SPI-only interface. | Limited to lower throughput and fixed 3.3/5 V logic; lacks flexible reference scaling for sub-2 V sensors. | Select when cost sensitivity outweighs speed/flexibility needs and system uses only 3.3 V or 5 V rails. |
| MAX1116EKA+T | 12-bit, 1.2 Msps, 2.7–3.6 V supply; internal reference only (no VREF pin); 6-pin SOT23 package. | No external reference support limits full-scale adjustability; smaller package constrains thermal management at full speed. | Choose for space-constrained designs where fixed 2.5 V reference suffices and 0.2 Msps margin over 1 Msps is acceptable. |
Compared with ADS7822IDR and MAX1116EKA+T, the LTC2365ITS8#TRMPBF uniquely combines 1 Msps speed, external VREF scalability (1.4–3.6 V), independent OVDD (1–3.6 V), and industry-grade temperature range - making it optimal for precision, low-power, mixed-voltage embedded systems requiring design longevity.
Availability
LTC2365ITS8#TRMPBF is available at Aetrix Electronics and suitable for portable data loggers, industrial sensor interfaces, medical point-of-care devices, and automotive cabin sensors requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2365ITS8#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, 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 LTC2365ITS8#TRMPBF belongs to ADI's legacy Linear Technology precision SAR ADC family, engineered for ultra-low-power, high-speed data acquisition in space- and energy-constrained applications - emphasizing accuracy retention across temperature and supply variation.
FAQ
What is the maximum sampling rate supported by the LTC2365ITS8#TRMPBF?
The LTC2365ITS8#TRMPBF supports a maximum sampling rate of 1 Msps, verified across the full –40°C to +85°C operating temperature range. This rate is achieved using a 16 MHz SCK clock with 14 SCK cycles per conversion, yielding a minimum throughput time of 1000 ns. Performance metrics including 72.8 dB SINAD are guaranteed at this rate for input frequencies up to 461 kHz.
Does the LTC2365ITS8#TRMPBF require an external reference voltage?
Yes, the LTC2365ITS8#TRMPBF requires an external reference voltage applied to the VREF pin. The device supports VREF from 1.4 V to VDD (2.35–3.6 V), enabling full-scale input ranges as low as 1.4 V for enhanced resolution (342 µV LSB) without external amplification. Internal reference operation is not supported - VREF must be supplied externally with 4.7 µF bypass capacitance.
Can the LTC2365ITS8#TRMPBF interface directly with a 1.8 V microcontroller?
Yes, the LTC2365ITS8#TRMPBF can interface directly with a 1.8 V microcontroller via its OVDD pin (Pin 5). By supplying 1.8 V to OVDD, the SDO output swing is constrained to 0–1.8 V, ensuring logic-level compatibility with 1.8 V I/O standards. VDD and VREF remain independent (e.g., 3.0 V for analog performance), preserving ADC accuracy while simplifying digital interfacing.
What is the sleep mode current consumption of the LTC2365ITS8#TRMPBF?
The LTC2365ITS8#TRMPBF draws 0.1 µA typical supply current in sleep mode, specified over the –40°C to +85°C temperature range. Sleep mode is entered automatically when CS remains HIGH and SCK is held static (0 V or VDD); it reduces power by >99.99% versus active operation (2 mA), making it ideal for battery-operated systems with intermittent sampling requirements.
Is the LTC2365ITS8#TRMPBF pin-compatible with other members of the LTC236x family?
Yes, the LTC2365ITS8#TRMPBF is pin-compatible with the LTC2366ITS8#TRMPBF (3 Msps variant) and LTC2362ITS8#TRMPBF (500 ksps variant) in the TSOT-23-8 package. All share identical pin functions (VDD, VREF, GND, AIN, OVDD, SDO, SCK, CS), allowing drop-in speed upgrades or downgrades without PCB revision - provided timing constraints and VREF/OVDD configurations are validated for the selected variant.
LTC2365ITS8#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:
- 12
- Sampling Rate (Per Second):
- 1M
- 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:
- -
LTC2365ITS8#TRMPBF FAQ
1.How can I place an order for LTC2365ITS8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2365ITS8#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 LTC2365ITS8#TRMPBF reliable?
The price and inventory of LTC2365ITS8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2365ITS8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2365ITS8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2365ITS8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2365ITS8#TRMPBF?
LTC2365ITS8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2365ITS8#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 LTC2365ITS8#TRMPBF?
For technical support, including LTC2365ITS8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2365ITS8#TRMPBF requirements.
6.How does Aetrix verify that LTC2365ITS8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2365ITS8#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 LTC2365ITS8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2365ITS8#TRMPBF?
All LTC2365ITS8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2365ITS8#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 LTC2365ITS8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2365ITS8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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