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Analog Devices Inc. LTC2365IS6#TRPBF
- Part No.:
- LTC2365IS6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC2365IS6#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:1,225
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Product details
Overview
LTC2365IS6#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 1 Msps successive-approximation analog-to-digital converter (SAR ADC) in a 6-lead TSOT-23 package, operating from a single 2.35V–3.6V supply with 2 mA typical supply current. It features 73 dB SNR, 72 dB SINAD at 1 Msps, no data latency, and sleep mode drawing only 0.1 µA - enabling direct sensor interfacing in compact, battery-powered systems.
For engineers reviewing the LTC2365IS6#TRPBF datasheet, LTC2365IS6#TRPBF pinout, LTC2365IS6#TRPBF application, or LTC2365IS6#TRPBF equivalent, key selection considerations include its 1 Msps throughput with 6 mW power dissipation, VDD-referenced single-ended input (0 V to VDD), SPI/MICROWIRE-compatible serial interface, and –40°C to +85°C industrial temperature range.
Technical Context
The LTC2365IS6#TRPBF implements a switched-capacitor SAR architecture with an integrated sample-and-hold, supporting full-scale input ranges directly tied to VDD (0 V to VDD). Its timing-critical serial interface requires precise CS/SCK coordination: conversion starts on CS falling edge, outputs 16-bit frame (2 leading zeros + 12 data bits + 2 trailing zeros) MSB-first on SDO, with data valid on SCK falling edges.
It operates exclusively in VDD-referenced mode (no external VREF or OVDD pins), eliminating reference buffering complexity but fixing full-scale span to supply voltage. Acquisition time is 181.5 ns and conversion time is 818.5 ns, yielding minimum throughput time of 1000 ns - enabling deterministic real-time sampling in embedded control loops.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function for closed-loop feedback stability. |
| Sampling Rate | 1 Msps maximum - supports Nyquist-limited signal capture up to 500 kHz without aliasing in baseband applications. |
| SNR | 73 dB typical at 1 MHz input - enables >11.8 ENOB for precision measurement of low-amplitude signals. |
| Power Dissipation | 6 mW at 1 Msps (3 V supply) - allows continuous high-speed sampling in thermally constrained handheld devices. |
| Supply Range | 2.35 V to 3.6 V - compatible with Li-ion battery discharge profile and standard 3.3 V rails. |
| Sleep Current | 0.1 µA typical - reduces standby power by >99.9% versus active mode, critical for duty-cycled sensor nodes. |
| Operating Temp | –40°C to +85°C - qualified for industrial automation, automotive cabin electronics, and outdoor instrumentation. |
Pinout & Package
Package: 6-lead Plastic TSOT-23 (0.95 mm × 1.6 mm × 0.55 mm height), moisture sensitivity level 1, RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply and internal reference | Defines full-scale analog input range (0 V to VDD); must be bypassed with 10 µF ceramic + 0.1 µF ceramic to solid ground plane. |
| GND (Pin 2) | Analog and digital ground reference | Single-point connection to PCB ground plane required to minimize noise coupling into sample-and-hold node. |
| AIN (Pin 3) | Analog input | Single-ended, high-impedance (4 pF capacitance) input referenced to GND; accepts 0 V to VDD range without external gain stage. |
| SCK (Pin 4) | Serial clock input | Controls conversion timing and data shift-out rate; supports up to 16 MHz clock frequency with defined setup/hold requirements. |
| SDO (Pin 5) | Three-state serial data output | Outputs 16-bit frame (MSB first) during CS low; output swing matches VDD; enters Hi-Z when CS high or after 16th SCK falling edge. |
| CS (Pin 6) | Chip select input | Active-low signal initiating conversion and framing serial data; falling edge triggers acquisition start and first data bit output. |
Key Features
| Feature | Design Value |
|---|---|
| No data latency | Conversion result available immediately after final SCK edge - eliminates pipeline delay in real-time control systems. |
| VDD-referenced architecture | Eliminates need for external reference IC or buffer, reducing BOM count and layout area in space-constrained designs. |
| 16-bit serial frame format | Two leading/trailing zeros enable automatic bit alignment in 16-bit microcontroller SPI peripherals without software masking. |
| High-impedance analog input | 4 pF input capacitance and ±1 µA leakage allow direct connection to piezoelectric sensors, thermocouples, and resistive bridges. |
| Dedicated sleep mode | 0.1 µA quiescent current with full state retention - enables microsecond wake-up for event-triggered sampling without reinitialization. |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure over multi-day intervals. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned analog outputs from MEMS sensors at 1 ksps average rate with burst-mode 1 Msps capability for transient capture. Use Value: 6 mW active power and 0.1 µA sleep current extend battery life beyond 2 years on two AA cells while maintaining high-fidelity signal capture. |
Use Scenario: PLC analog input modules acquiring signals from 4–20 mA transmitters and RTD bridges in factory-floor cabinets. IC Role / Device Role / Timing Role: Isolated front-end ADC providing galvanically separated, high-accuracy digitization with minimal external components. Use Value: VDD-referenced operation simplifies power domain translation across isolation barriers; 73 dB SNR ensures <0.02% measurement uncertainty over 0–100°C range. |
| Medical Wearables | Automotive Cabin Monitoring |
Use Scenario: ECG patch devices measuring biopotentials with ultra-low power envelope and sub-microvolt noise floor. IC Role / Device Role / Timing Role: High-resolution, low-noise ADC sampling electrode signals at 1–2 ksps with programmable gain amplifier (PGA) bypass. Use Value: 72 dB SINAD at 1 Msps enables clean FFT-based heart-rate variability (HRV) analysis without oversampling or digital filtering overhead. |
Use Scenario: In-cabin air quality sensors detecting CO₂, VOCs, and particulate matter using NDIR and electrochemical transducers. IC Role / Device Role / Timing Role: Signal-chain ADC converting low-level transducer outputs in harsh automotive environments with wide temperature swing. Use Value: –40°C to +85°C qualification and 0.25 LSB integral linearity error ensure stable calibration across vehicle lifetime without field recalibration. |
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 | 12-bit, 200 ksps max, 2.7–5.25 V supply, SPI interface, 8-pin SOIC package | Lower speed and larger footprint; lacks sleep mode (<1 µA typical) | Select when cost-sensitive designs tolerate slower sampling and can accommodate SOIC layout. |
| MAX11100ETE+ | 12-bit, 1 Msps, 2.7–3.6 V supply, internal reference, 12-pin TQFN package | Includes internal 2.048 V reference and 12-pin thermal pad; higher pin count and different serial protocol | Select when reference stability is critical and board space allows 3×3 mm TQFN; avoid if VDD-referencing is mandatory. |
Compared with ADS7822U and MAX11100ETE+, the LTC2365IS6#TRPBF delivers superior power efficiency (6 mW vs ≥12 mW), smallest form factor (TSOT-23 vs SOIC/TQFN), and true zero-latency operation - making it optimal for size- and battery-limited edge-sensing applications where VDD tracking is acceptable.
Availability
LTC2365IS6#TRPBF is available at Aetrix Electronics and suitable for portable medical devices, industrial IoT sensor nodes, and automotive cabin monitoring systems requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade (-40°C to +85°C).
Supply support for LTC2365IS6#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 LTC2365IS6#TRPBF belongs to ADI's legacy Linear Technology precision SAR ADC family, designed specifically for low-power, high-speed data acquisition in space-constrained embedded systems where supply-referenced simplicity and nanowatt sleep modes are essential.
FAQ
What is the maximum sampling rate supported by the LTC2365IS6#TRPBF?
The LTC2365IS6#TRPBF supports a maximum sampling rate of 1 Msps under specified conditions (VDD = 3.0 V, fSCK ≤ 16 MHz). This is confirmed in the Absolute Maximum Ratings and Timing Characteristics tables of the official datasheet, with minimum throughput time of 1000 ns. Higher rates are not guaranteed and may violate timing margins.
Does the LTC2365IS6#TRPBF require an external reference voltage?
No, the LTC2365IS6#TRPBF does not require an external reference. As a 6-lead TSOT-23 variant, it uses VDD as the reference source, resulting in a full-scale input range of 0 V to VDD. This is explicitly defined in the Pin Functions section and distinguishes it from the 8-lead TS8 variants (e.g., LTC2365ITS8#TRPBF) that support external VREF.
What is the purpose of the two leading and trailing zeros in the LTC2365IS6#TRPBF serial output frame?
The LTC2365IS6#TRPBF outputs a 16-bit serial frame comprising two leading zeros, 12 data bits (MSB first), and two trailing zeros. This structure enables automatic alignment with 16-bit SPI peripherals and simplifies firmware parsing - the 12-bit result occupies bits D13–D2 of the 16-bit word, eliminating need for bit-shifting or masking in common microcontrollers.
Can the LTC2365IS6#TRPBF operate from a 2.5 V supply?
Yes, the LTC2365IS6#TRPBF is fully specified to operate from 2.35 V to 3.6 V, including 2.5 V. At 2.5 V, typical supply current remains ~2 mA, full-scale input range becomes 0–2.5 V, and SNR degrades only marginally (72.5 dB typical per Figure G05), maintaining functional integrity for most precision sensing applications.
How does the sleep mode of the LTC2365IS6#TRPBF reduce system power consumption?
The LTC2365IS6#TRPBF enters sleep mode when CS remains high and SCK is held static (0 V or VDD), drawing just 0.1 µA typical supply current. This reduces active-mode power (6 mW) by >99.9%, enabling ultra-low-duty-cycle operation in battery-powered systems - wake-up occurs within 333 ns (tPOWER-UP) upon CS assertion, preserving real-time responsiveness.
LTC2365IS6#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- 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-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2365IS6#TRPBF FAQ
1.How can I place an order for LTC2365IS6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2365IS6#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 LTC2365IS6#TRPBF reliable?
The price and inventory of LTC2365IS6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2365IS6#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2365IS6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2365IS6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2365IS6#TRPBF?
LTC2365IS6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2365IS6#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 LTC2365IS6#TRPBF?
For technical support, including LTC2365IS6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2365IS6#TRPBF requirements.
6.How does Aetrix verify that LTC2365IS6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2365IS6#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 LTC2365IS6#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2365IS6#TRPBF?
All LTC2365IS6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2365IS6#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 LTC2365IS6#TRPBF part is unused and in its original packaging.
Return procedure for LTC2365IS6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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