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Analog Devices Inc. LTC2365CTS8#TRMPBF
- Part No.:
- LTC2365CTS8#TRMPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2365CTS8#TRMPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:904
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Product details
Overview
LTC2365CTS8#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. It delivers 73 dB SNR, –86 dB THD at 1 MHz input, 0.34 LSB RMS transition noise, and supports external reference (1.4V to VDD) and independent digital output supply (1V to VDD), enabling direct sensor interfacing in battery-powered data acquisition systems.
For engineers reviewing the LTC2365CTS8#TRMPBF datasheet, LTC2365CTS8#TRMPBF pinout, LTC2365CTS8#TRMPBF application, or LTC2365CTS8#TRMPBF equivalent, this page provides verified technical context, validated pin functions, confirmed AC/DC performance metrics across temperature, SPI/MICROWIRE-compatible timing, and real-world selection guidance against comparable 12-bit SAR ADCs with TSOT-23 packaging and sleep-mode power management.
Technical Context
The LTC2365CTS8#TRMPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, supporting full-scale input ranges from 0V to VREF (1.4V–VDD) and achieving no data latency. Its serial interface uses CS-active-low framing, SCK-synchronized falling-edge data capture, and MSB-first 16-bit frame format (two leading zeros + 12 data bits + two trailing zeros).
It features dedicated OVDD (Pin 5) for digital output voltage control (1V–VDD), enabling interoperability with 1.8V/2.5V/3V logic domains, and includes a sleep mode drawing only 0.1 µA typical supply current-critical for ultra-low-power portable instrumentation and sensor nodes requiring rapid wake-up (<1 µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonicity and full code coverage for precision measurement applications. |
| Sampling Rate | 1 Msps maximum - enables real-time digitization of signals up to 500 kHz Nyquist bandwidth without aliasing. |
| SINAD | 72.8 dB at 1 MHz input (fSMPL = 1 Msps) - supports >11.8 ENOB for high-fidelity signal reconstruction. |
| SNR | 73 dB at 1 MHz input - indicates low inherent quantization and thermal noise, suitable for dynamic range-critical sensors. |
| THD | –86.1 dB at 1 MHz input - ensures minimal harmonic distortion in audio, medical, and communication front-ends. |
| Supply Current | 2 mA typical at 1 Msps - achieves 6 mW total power dissipation at 3V, optimizing battery life in handheld terminals. |
| Sleep Current | 0.1 µA typical - allows microcontroller-governed duty cycling with sub-millisecond wake-up for intermittent sensing. |
Pinout & Package
Package: 8-lead plastic TSOT-23 (0°C to 70°C operating range), 2.9 mm × 1.6 mm footprint, 0.65 mm pitch, exposed pad optional.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive analog supply | 2.35V–3.6V main supply; defines internal bias and analog reference domain; requires 10 µF ceramic bypass to GND. |
| VREF (Pin 2) | External reference input | Accepts 1.4V–VDD reference voltage; sets full-scale analog input range (0V to VREF); bypass with 4.7 µF ceramic. |
| GND (Pin 3) | Analog ground | Primary return path for analog circuitry; must connect directly to solid ground plane to minimize noise coupling. |
| AIN (Pin 4) | Analog input | Single-ended, high-impedance (±1 µA leakage) input referenced to GND; supports 0V–VREF range with 20 pF input capacitance. |
| OVDD (Pin 5) | Digital output supply | 1V–VDD supply for SDO driver; isolates digital I/O swing from analog VDD, enabling mixed-voltage system interfacing. |
| SDO (Pin 6) | Serial data output | Three-state, MSB-first output delivering 16-bit frame (00 + 12-bit code + 00); driven by OVDD voltage level. |
| SCK (Pin 7) | Serial clock input | Accepts up to 16 MHz clock (fSCK); falling edge clocks out data; timing-critical for throughput and jitter control. |
| CS (Pin 8) | Chip select input | Active-low conversion trigger and data framing signal; falling edge initiates sampling and enables SDO output. |
Key Features
| Feature | Design Value |
|---|---|
| External reference support | Enables flexible full-scale scaling (1.4V–VDD) and improved accuracy vs. internal reference drift, critical for calibrated sensor interfaces. |
| Independent OVDD supply | Allows SDO output swing to match downstream logic (1.8V/2.5V/3V) without level shifters-reducing BOM count and layout complexity. |
| No data latency | Delivers conversion result within one throughput cycle (1000 ns), eliminating pipeline delay for real-time closed-loop control. |
| Sleep mode (0.1 µA) | Permits microcontroller-driven power gating between measurements-extending battery life in wireless sensor nodes by orders of magnitude. |
| Guaranteed operation (0°C to 70°C) | Validated performance across commercial temperature range, simplifying thermal design for industrial handhelds and test equipment. |
Applications
| Portable Data Loggers | Medical Vital Sign Monitors |
|---|---|
Use Scenario: Continuous acquisition of ECG, SpO₂, or temperature sensor outputs in handheld clinical devices powered by coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Primary SAR ADC capturing analog biosignals at ≥1 ksps with <1 µs wake-up latency and sub-µA sleep current. Use Value: Eliminates external gain stages via 0V–VREF input flexibility and achieves >72 dB SINAD for clean waveform fidelity at low power. |
Use Scenario: Digitizing pressure transducer outputs in portable blood pressure cuffs or respiratory flow sensors. IC Role / Device Role / Timing Role: High-accuracy, low-noise ADC interfacing directly to millivolt-level bridge sensors with programmable reference scaling. Use Value: 0.34 LSB RMS transition noise and –86 dB THD ensure diagnostic-grade resolution without post-processing correction. |
| Industrial Handheld Terminals | Battery-Operated Test Equipment |
Use Scenario: Field-deployed multimeters or insulation testers requiring fast, precise DC/AC voltage and current measurements. IC Role / Device Role / Timing Role: Core 12-bit ADC handling autoranging inputs with external reference selection and SPI-compatible host interface. Use Value: 1 Msps sampling enables oversampling for enhanced DC accuracy while maintaining 6 mW active power budget. |
Use Scenario: Portable oscilloscope probes or signal analyzers needing compact, low-jitter digitization of baseband signals. IC Role / Device Role / Timing Role: High-SFDR (87 dB) ADC capturing transient events with minimal harmonic contamination in 12-bit resolution. Use Value: 73 dB SNR and 30 MHz full-power bandwidth allow undersampling of RF-modulated signals up to 15 MHz. |
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 |
|---|---|---|---|
| ADS7822U | 8-pin SOIC only; 1 Msps; 70 dB SNR; no OVDD pin; VREF tied to VDD or external; 3.3V-only supply. | Lacks independent digital output supply and reduced-span reference flexibility; unsuitable for mixed-voltage or low-VREF sensor interfaces. | Choose ADS7822U only when board space permits SOIC and system uses fixed 3.3V logic; avoid for TSOT-23 footprint or 1.8V I/O compatibility. |
| MAX11166ETE+ | 12-bit, 1 Msps, 8-pin TDFN; 73.5 dB SNR; 0.1 µA sleep; but requires 2.7V–3.6V VDD and 1.8V–3.6V VIO (not OVDD); no dedicated VREF pin. | Uses internal reference or buffered external reference; lacks pin-defined VREF input, limiting direct sensor span adjustment. | Select MAX11166ETE+ for higher SNR margin and TDFN thermal performance; use LTC2365CTS8#TRMPBF when explicit VREF control and OVDD decoupling are required. |
Compared with ADS7822U and MAX11166ETE+, the LTC2365CTS8#TRMPBF uniquely combines TSOT-23 footprint, dedicated VREF and OVDD pins, 1.4V minimum reference support, and guaranteed 0°C–70°C operation-making it optimal for space-constrained, multi-supply, and calibrated sensor systems where reference flexibility and digital I/O compatibility are non-negotiable.
Availability
LTC2365CTS8#TRMPBF is available at Aetrix Electronics and suitable for portable data loggers, medical vital sign monitors, and industrial handheld terminals requiring stable component supply, long-term lifecycle support, and RoHS-compliant lead-free packaging.
Supply support for LTC2365CTS8#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 LTC2365CTS8#TRMPBF belongs to ADI's legacy Linear Technology precision SAR ADC product line, engineered for ultra-low-power, high-speed data acquisition in space- and energy-constrained applications where accuracy, small size, and flexible reference architecture are essential.
FAQ
What is the maximum sampling rate supported by the LTC2365CTS8#TRMPBF?
The LTC2365CTS8#TRMPBF supports a maximum sampling rate of 1 Msps, as specified in its datasheet under "Maximum Sampling Frequency" with fSCK ≤ 16 MHz. This rate is guaranteed over the full 0°C to 70°C operating temperature range and enables accurate digitization of signals up to 500 kHz without aliasing. The LTC2365CTS8#TRMPBF achieves this with 14 SCK cycles per conversion and no pipeline latency.
Does the LTC2365CTS8#TRMPBF require an external reference voltage?
Yes-the LTC2365CTS8#TRMPBF in TS8 package (including LTC2365CTS8#TRMPBF) requires an external reference applied to Pin 2 (VREF), which sets the full-scale input range from 0V to VREF. VREF must be between 1.4V and VDD (2.35V–3.6V). Unlike the S6-package variants, the TS8 version does not use VDD as reference, giving designers precise control over input span and accuracy.
Can the LTC2365CTS8#TRMPBF interface directly with a 1.8V microcontroller?
Yes-the LTC2365CTS8#TRMPBF supports direct 1.8V logic interfacing via its dedicated OVDD pin (Pin 5), which controls the SDO output voltage swing. By supplying 1.8V to OVDD, the SDO output levels comply with 1.8V CMOS thresholds, eliminating the need for external level shifters. This capability is explicitly documented in the "Digital Inputs and Outputs" section of the LTC2365/LTC2366 datasheet.
What is the sleep mode current consumption of the LTC2365CTS8#TRMPBF?
The LTC2365CTS8#TRMPBF draws 0.1 µA typical supply current in sleep mode, as measured across the –40°C to 85°C range and confirmed in the "Power Requirement" table. This ultra-low quiescent current is activated via the serial interface (CS high, SCK idle) and enables aggressive power cycling in battery-operated systems-e.g., waking every 100 ms for a 1 µs conversion yields average current below 1 nA.
Is the LTC2365CTS8#TRMPBF pin-compatible with the LTC2366CTS8#TRMPBF?
No-the LTC2365CTS8#TRMPBF and LTC2366CTS8#TRMPBF share identical TS8 package pinout and footprint, but they differ in maximum sampling rate (1 Msps vs. 3 Msps), required SCK frequency (≤16 MHz vs. ≤48 MHz), and AC performance (e.g., SINAD 72.8 dB vs. 72 dB at respective max rates). While PCB layout is compatible, firmware and timing constraints must be revalidated for each part.
LTC2365CTS8#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:
- 0°C ~ 70°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2365CTS8#TRMPBF FAQ
1.How can I place an order for LTC2365CTS8#TRMPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2365CTS8#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 LTC2365CTS8#TRMPBF reliable?
The price and inventory of LTC2365CTS8#TRMPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2365CTS8#TRMPBF is usually 5 days.
3.What payment methods are accepted for LTC2365CTS8#TRMPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2365CTS8#TRMPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2365CTS8#TRMPBF?
LTC2365CTS8#TRMPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2365CTS8#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 LTC2365CTS8#TRMPBF?
For technical support, including LTC2365CTS8#TRMPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2365CTS8#TRMPBF requirements.
6.How does Aetrix verify that LTC2365CTS8#TRMPBF is sourced from the original manufacturer or authorized distributors?
All LTC2365CTS8#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 LTC2365CTS8#TRMPBF meets industry standards.
7.What is the process for return or replacement of LTC2365CTS8#TRMPBF?
All LTC2365CTS8#TRMPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2365CTS8#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 LTC2365CTS8#TRMPBF part is unused and in its original packaging.
Return procedure for LTC2365CTS8#TRMPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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