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Analog Devices Inc. LTC2361IS6#TRPBF
- Part No.:
- LTC2361IS6#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
LTC2361IS6#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-6
- Quantity:
- Payment:
- Shipping:
Inventory:4,204
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Product details
Overview
LTC2361IS6#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), no data latency, SPI/MICROWIRE-compatible serial interface, and is rated for –40°C to +85°C operation. It targets compact, battery-powered sensor interfaces requiring high speed and ultra-low power.
For engineers reviewing the LTC2361IS6#TRPBF datasheet, LTC2361IS6#TRPBF pinout, LTC2361IS6#TRPBF application, or LTC2361IS6#TRPBF equivalent, key selection considerations include its 250ksps sampling rate, 73dB SNR, 12-bit no-missing-codes performance, TSOT-23-6 footprint, and direct sensor interfacing capability without external gain stages.
Technical Context
The LTC2361IS6#TRPBF implements an internal sample-and-hold with 0.5μs acquisition time and 3μs conversion time, enabling 250ksps throughput with 4μs minimum throughput time. Its architecture uses a switched-capacitor SAR core referenced to VDD, eliminating need for external reference in S6-package variants.
It employs a 3-wire serial interface where CONV controls conversion initiation and SDO enablement, SCK clocks data on falling edges (MSB-first), and SDO outputs 12-bit result followed by trailing zeros. Sleep mode activation after conversion reduces IDD to 0.1μA, with wake-up requiring only tACQ = 1μs before next CONV edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function and full code coverage across full temperature range. |
| Sampling Rate | 250ksps maximum - supports real-time acquisition of signals up to 125kHz Nyquist bandwidth with minimal aliasing risk. |
| SNR | 73dB at fIN = 49kHz - enables >11.8 effective bits for precision DC and low-frequency AC measurements. |
| Supply Current | 0.75mA at 250ksps, 0.1μA in sleep - allows continuous 100ksps operation on <1.5mW, ideal for energy-constrained systems. |
| Input Range | 0V to VDD (2.35V–3.6V) - permits direct connection to rail-to-rail sensors without level-shifting or external reference. |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive cabin environments without derating. |
| Interface | SPI/MICROWIRE-compatible 3-wire serial - interoperable with standard MCU GPIO or hardware SPI peripherals without protocol translation. |
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 for all internal circuits; must connect directly to solid ground plane to minimize noise coupling. |
| AIN (Pin 3) | Analog input terminal | High-impedance (±1μA leakage), single-ended input referenced to GND; accepts 0V to VDD signals without external buffering. |
| SCK (Pin 4) | Serial clock input | Asynchronous clock synchronizing data transfer; SDO transitions occur on falling edge; max 25MHz frequency. |
| SDO (Pin 5) | Three-state serial data output | Outputs 12-bit conversion result MSB-first, then trailing zeros; enters Hi-Z when CONV is high or during sleep. |
| CONV (Pin 6) | Convert control input | Active-high signal initiating conversion on rising edge; low state enables SDO and clocks out data; controls sleep/wake timing. |
Key Features
| Feature | Design Value |
|---|---|
| No data latency | Conversion result available immediately after tTHROUGHPUT (4μs), eliminating pipeline delay in closed-loop control. |
| Auto-sleep power management | IDD drops to 0.1μA between conversions without external control, reducing average power by >99% at low duty cycles. |
| VDD-referenced input | Eliminates need for external voltage reference or level-shifting circuitry when VDD is stable, saving BOM cost and board area. |
| High-impedance analog input | ±1μA input leakage and 4pF input capacitance during conversion allow direct connection to high-output-impedance sensors (e.g., thermistors, RTDs). |
| Industrial temperature grade | Specified over –40°C to +85°C with guaranteed INL (±1 LSB), DNL (±1 LSB), and SNR (73dB) across full range. |
Applications
| Portable Data Loggers | Automotive Cabin Sensors |
|---|---|
Use Scenario: Battery-powered environmental monitors logging temperature, humidity, and pressure at 100–250Hz intervals. IC Role / Device Role / Timing Role: Primary analog front-end ADC acquiring conditioned sensor outputs with minimal power overhead per sample. Use Value: 0.75mA active current and 0.1μA sleep current extend coin-cell life to >5 years at 100ksps burst sampling. |
Use Scenario: Occupancy detection using infrared pyroelectric sensors and cabin air quality monitoring via gas sensors. IC Role / Device Role / Timing Role: High-speed, low-noise digitizer for transient thermal and chemical response signals. Use Value: 73dB SNR and 250ksps rate capture fast-changing CO₂ or VOC transients without averaging artifacts. |
| Industrial Process Controllers | Medical Wearables |
Use Scenario: Compact PLC I/O modules measuring 4–20mA loop signals and thermocouple outputs in factory automation. IC Role / Device Role / Timing Role: Isolated analog input channel ADC with rail-to-rail input compatibility and robust ESD tolerance. Use Value: Direct 0V–3.3V input range matches common isolated amplifier outputs, avoiding gain-stage errors and component count. |
Use Scenario: Continuous vital sign monitors (ECG, PPG) in wrist-worn devices requiring sub-1mW total analog front-end power. IC Role / Device Role / Timing Role: Low-power, high-fidelity signal digitizer for analog biosensor conditioning chains. Use Value: 12-bit resolution with no missing codes ensures accurate R-wave detection and pulse amplitude quantization at 250Hz. |
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, 1.25mW at 200ksps, no auto-sleep, SO-8 package | Higher supply voltage requirement; lacks sleep mode; larger footprint limits ultra-compact designs | Select when existing 5V system rails exist and board space is not constrained. |
| MAX11100ETE+ | 500ksps, 2.7–3.6V, 1.8mW at 500ksps, internal reference, 12-bit, TDFN-12 package | Higher power, integrated reference adds flexibility but increases cost and complexity for VDD-referenced use cases | Select when external reference is unavailable and full-scale range must be independent of VDD stability. |
Compared with ADS7822U and MAX11100ETE+, the LTC2361IS6#TRPBF delivers superior power efficiency at 250ksps with automatic sleep, smallest footprint among alternatives, and simplified VDD-referenced design-making it optimal for size- and battery-limited applications where reference independence is not required.
Availability
LTC2361IS6#TRPBF is available at Aetrix Electronics and suitable for portable data loggers, automotive cabin sensors, industrial process controllers, medical wearables, and battery-operated instrumentation requiring stable component supply and long-term manufacturability.
Supply support for LTC2361IS6#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, serving industrial, automotive, communications, and healthcare markets.
The LTC2361IS6#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for ultra-low-power, high-speed data acquisition in space-constrained, battery-sensitive applications where minimal external components and guaranteed performance across temperature are critical.
FAQ
What is the maximum sampling rate of the LTC2361IS6#TRPBF?
The LTC2361IS6#TRPBF has a maximum sampling rate of 250ksps, with guaranteed timing performance including 3μs conversion time and 1μs acquisition time. This rate is fully specified across the –40°C to +85°C operating temperature range and supports reliable undersampling of signals up to 125kHz without aliasing concerns in properly filtered systems.
Does the LTC2361IS6#TRPBF require an external voltage reference?
No, the LTC2361IS6#TRPBF does not require an external voltage reference. In the S6 package configuration, it uses VDD as the reference source, establishing a 0V to VDD analog input range. This eliminates the need for external reference components, simplifying design and reducing BOM cost and PCB area for applications where VDD is sufficiently stable.
What is the sleep current specification for the LTC2361IS6#TRPBF?
The LTC2361IS6#TRPBF draws a typical sleep current of 0.1μA when CONV remains high after conversion completion. This ultra-low quiescent current is guaranteed over the full –40°C to +85°C temperature range and enables multi-year battery life in intermittent-sampling applications such as environmental data loggers and wireless sensor nodes.
How is data read from the LTC2361IS6#TRPBF serial interface?
Data is read from the LTC2361IS6#TRPBF via a 3-wire SPI/MICROWIRE-compatible interface: a rising CONV edge initiates conversion, and a subsequent low CONV level enables SDO. The 12-bit result is clocked out MSB-first on SDO synchronized to SCK falling edges. After 12 bits, trailing zeros are output if additional clocks are applied.
What package type and dimensions does the LTC2361IS6#TRPBF use?
The LTC2361IS6#TRPBF uses a 6-lead TSOT-23 (S6) package measuring 1.6mm × 2.9mm × 0.8mm with a pitch of 0.95mm. It features a RoHS-compliant lead-free finish and moisture sensitivity level 1, supporting standard reflow soldering processes without baking requirements.
LTC2361IS6#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:
- -40°C ~ 85°C
- Supplier Device Package:
- TSOT-23-6
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2361IS6#TRPBF FAQ
1.How can I place an order for LTC2361IS6#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2361IS6#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 LTC2361IS6#TRPBF reliable?
The price and inventory of LTC2361IS6#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2361IS6#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2361IS6#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2361IS6#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2361IS6#TRPBF?
LTC2361IS6#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2361IS6#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 LTC2361IS6#TRPBF?
For technical support, including LTC2361IS6#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2361IS6#TRPBF requirements.
6.How does Aetrix verify that LTC2361IS6#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2361IS6#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 LTC2361IS6#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2361IS6#TRPBF?
All LTC2361IS6#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2361IS6#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 LTC2361IS6#TRPBF part is unused and in its original packaging.
Return procedure for LTC2361IS6#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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