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Analog Devices Inc. LTC2361CS6#TRPBF
- Part No.:
- LTC2361CS6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC2361CS6#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,278
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Product details
Overview
LTC2361CS6#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 250ksps successive-approximation ADC in a 6-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 single-ended analog input (0V to VDD), SPI/MICROWIRE-compatible 3-wire serial interface, no data latency, and is optimized for battery-powered sensor acquisition in handheld and portable systems.
For engineers reviewing the LTC2361CS6#TRPBF datasheet, LTC2361CS6#TRPBF pinout, LTC2361CS6#TRPBF application, or LTC2361CS6#TRPBF equivalent, key selection criteria include its 250ksps throughput, 73dB SNR, 12-bit no-missing-codes resolution, TSOT-23-6 footprint, and VDD-referenced input architecture - all critical for low-power, space-constrained embedded data acquisition.
Technical Context
The LTC2361CS6#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, using an internal oscillator to guarantee deterministic 250ksps sampling without external clock dependency. Its conversion timing is fully self-timed: tACQ = 1μs and tCONV = 3μs yield a minimum throughput time of 4μs.
It operates exclusively in VDD-referenced mode (no separate VREF pin), delivering 0V–VDD analog input range and 12-bit serial output (MSB-first) via SDO, synchronized by SCK falling edges. The CONV signal controls both conversion initiation (rising edge) and SDO enable/disable (low = active output).
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 | 250ksps maximum - enables real-time capture of signals up to 125kHz Nyquist bandwidth. |
| SNR | 73dB at fIN = 49kHz - supports >11.8 ENOB for high-fidelity sensor signal digitization. |
| Supply Current | 0.75mA at 250ksps; drops to 0.1μA in sleep mode - enables microamp-level average power in duty-cycled systems. |
| Analog Input Range | 0V to VDD (2.35V–3.6V) - eliminates need for external reference or level-shifting in single-supply designs. |
| Interface | SPI/MICROWIRE-compatible 3-wire serial (CONV, SCK, SDO) - interoperable with standard MCU peripherals without protocol translation. |
| Operating Temp | 0°C to 70°C (C-grade) - qualified for commercial and industrial ambient environments. |
Pinout & Package
Package: 6-lead TSOT-23 (S6), 1.6mm × 2.9mm × 0.8mm, moisture sensitivity level 1, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply and reference source | Supplies core logic and defines full-scale analog input range (0V to VDD); requires 2.2μF ceramic bypass to GND. |
| GND (Pin 2) | Analog and digital ground reference | Single ground connection point; must tie directly to solid ground plane to minimize noise coupling. |
| AIN (Pin 3) | Analog input | Single-ended input referenced to GND; accepts 0V–VDD signals with ±1μA leakage and 4pF dynamic capacitance during conversion. |
| SCK (Pin 4) | Serial clock input | Asynchronous clock up to 25MHz; data valid on falling edge; timing-critical for SDO synchronization. |
| SDO (Pin 5) | Three-state serial data output | Outputs 12-bit MSB-first conversion result followed by trailing zeros; Hi-Z when CONV = high. |
| CONV (Pin 6) | Convert control input | Rising edge initiates conversion; low state enables SDO output and powers up device; high state forces sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| No data latency | Conversion result available immediately after tTHROUGHPUT (4μs), enabling deterministic real-time control loops. |
| Auto-sleep power management | Draws only 0.1μA between conversions - reduces average power by >99% vs. continuous operation at 250ksps. |
| VDD-referenced architecture | Eliminates external reference component and associated layout complexity in compact, cost-sensitive designs. |
| High-impedance analog input | ±1μA leakage and 20pF static capacitance allow direct connection to resistive sensors and transducers without buffer amplifiers. |
| Guaranteed operation to 125°C junction | Rated TJMAX = 150°C with θJA = 250°C/W - supports reliable deployment in thermally constrained enclosures. |
Applications
| Portable Medical Sensors | Industrial Process Monitoring |
|---|---|
Use Scenario: Battery-powered wearable ECG front-end acquiring biopotential signals at 250ksps for real-time arrhythmia detection. IC Role / Device Role / Timing Role: Primary 12-bit ADC digitizing conditioned analog bio-signals with minimal power overhead and deterministic timing. Use Value: 0.75mA active current and 0.1μA sleep current extend battery life to >1 week on coin cell; 73dB SNR preserves diagnostic fidelity. |
Use Scenario: Compact PLC analog input module measuring 4–20mA loop outputs and thermocouple voltages in factory automation cabinets. IC Role / Device Role / Timing Role: High-speed, low-drift ADC interfacing with precision op-amp signal conditioning stages. Use Value: 12-bit no-missing-codes linearity (±1 LSB INL) ensures accurate process variable representation; TSOT-23-6 saves board area in dense I/O modules. |
| Automotive Cabin Sensing | Uninterruptible Power Supply (UPS) Monitoring |
Use Scenario: Occupancy and air quality sensing node in automotive cabin, sampling CO₂, humidity, and temperature with ultra-low quiescent power. IC Role / Device Role / Timing Role: Low-power ADC capturing slow-varying environmental parameters with burst-mode acquisition. Use Value: Sleep current of 0.1μA enables years of operation on backup supercapacitors; 0V–VDD input simplifies integration with 3.3V system rail. |
Use Scenario: Real-time AC line voltage, battery voltage, and load current monitoring in 1kVA UPS units requiring fast fault response. IC Role / Device Role / Timing Role: High-throughput ADC feeding DSP-based protection algorithms with sub-4μs latency. Use Value: 250ksps sampling captures transient overvoltage events; 72dB SINAD ensures accurate RMS calculation for grid synchronization. |
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 | 200ksps max, 2.7–5.25V supply, external reference required, SO-8 package | Lacks auto-sleep; higher supply current (1.25mA); needs external REF and decoupling | Choose if wider supply range or legacy SO-8 layout compatibility is required; avoid for battery life-critical designs. |
| MAX11100ETT+ | 250ksps, 12-bit, internal reference, 6-pin TDFN, 1.8–3.6V supply | Includes internal 2.048V reference; lower max VDD; different pinout (no dedicated CONV pin) | Prefer when fixed 2.048V reference suffices and smaller TDFN footprint is acceptable; not drop-in compatible due to control interface differences. |
Compared with ADS7822U and MAX11100ETT+, the LTC2361CS6#TRPBF delivers superior power efficiency via automatic sleep mode, eliminates reference BOM cost, and provides guaranteed 250ksps performance in the industry-standard TSOT-23-6 package - making it optimal for space- and energy-constrained embedded systems.
Availability
LTC2361CS6#TRPBF is available at Aetrix Electronics and suitable for portable medical devices, industrial process monitors, automotive cabin sensors, and uninterruptible power supplies requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC2361CS6#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 semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC2361CS6#TRPBF belongs to ADI's precision SAR ADC product line, engineered for ultra-low-power, high-speed data acquisition in space-constrained, battery-operated, and thermally demanding applications.
FAQ
What is the maximum sampling rate of the LTC2361CS6#TRPBF?
The LTC2361CS6#TRPBF has a guaranteed maximum sampling rate of 250ksps across its full operating temperature range (0°C to 70°C). This is achieved using an internal oscillator, eliminating the need for an external clock source. At this rate, the device draws 0.75mA typical supply current from a 3V supply and completes each conversion in 3μs with 1μs acquisition time.
Does the LTC2361CS6#TRPBF require an external voltage reference?
No, the LTC2361CS6#TRPBF does not require an external voltage reference. As a 6-lead TSOT-23 (S6) variant, it uses VDD as the reference source, providing a 0V to VDD analog input range. This architecture removes the need for external reference components, reducing BOM count and PCB area - a key advantage over 8-lead TSOT-23 variants like the LTC2361CTS8#TRPBF that support dedicated VREF pins.
How does the CONV pin function on the LTC2361CS6#TRPBF?
The CONV pin on the LTC2361CS6#TRPBF serves two critical functions: a rising edge initiates conversion, and a logic-low state enables the SDO output driver to shift out the 12-bit result. When CONV remains high after conversion, the device automatically enters sleep mode, drawing only 0.1μA. This dual-role pin simplifies control sequencing and enables precise power gating in microcontroller-driven systems.
What is the analog input impedance and leakage specification for the LTC2361CS6#TRPBF?
The LTC2361CS6#TRPBF specifies ±1μA maximum analog input leakage current (IIN) at the AIN pin when CONV is high, and 4pF dynamic input capacitance during conversion. Its high-impedance input allows direct connection to passive sensors and transducers without buffer amplifiers - especially valuable in low-power, high-precision measurement chains where added noise and offset from op-amps must be avoided.
Is the LTC2361CS6#TRPBF pin-compatible with other members of the LTC236x family?
No, the LTC2361CS6#TRPBF is not pin-compatible with 8-lead TSOT-23 variants (e.g., LTC2361CTS8#TRPBF) due to differing pin counts and functions - the S6 package omits VREF and OVDD pins. However, it shares identical functionality and timing with the LTC2360CS6#TRPBF and LTC2362CS6#TRPBF, differing only in maximum sampling rate (100ksps/250ksps/500ksps) and corresponding supply current (0.5mA/0.75mA/1.1mA).
LTC2361CS6#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):
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- TSOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2361CS6#TRPBF FAQ
1.How can I place an order for LTC2361CS6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2361CS6#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 LTC2361CS6#TRPBF reliable?
The price and inventory of LTC2361CS6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2361CS6#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2361CS6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2361CS6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2361CS6#TRPBF?
LTC2361CS6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2361CS6#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 LTC2361CS6#TRPBF?
For technical support, including LTC2361CS6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2361CS6#TRPBF requirements.
6.How does Aetrix verify that LTC2361CS6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2361CS6#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 LTC2361CS6#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2361CS6#TRPBF?
All LTC2361CS6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2361CS6#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 LTC2361CS6#TRPBF part is unused and in its original packaging.
Return procedure for LTC2361CS6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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