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Analog Devices Inc. LTC2361HTS8#TRPBF
- Part No.:
- LTC2361HTS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2361HTS8#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2361HTS8#TRPBF from Analog Devices (formerly Linear Technology) is a 250ksps, 12-bit successive-approximation ADC in an 8-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 dedicated VREF and OVDD pins, 0V to VREF analog input range (1.4V–VDD), and SPI/MICROWIRE-compatible serial interface. It is used in high-speed, low-power data acquisition for automotive sensor interfaces and portable instrumentation.
For engineers reviewing the LTC2361HTS8#TRPBF datasheet, LTC2361HTS8#TRPBF pinout, LTC2361HTS8#TRPBF application, or LTC2361HTS8#TRPBF equivalent, key selection criteria include guaranteed –40°C to 125°C operation, 73dB SNR at 124kHz input, no data latency, 1.4V minimum reference voltage support, and TSOT-23-8 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC2361HTS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, internal oscillator-controlled conversion timing, and automatic power-down after each conversion. Its TSOT-23-8 package provides separate VREF (Pin 2) and OVDD (Pin 5) for independent analog reference and digital output voltage control - enabling interoperability with 1.8V/2.5V/3V logic systems while maintaining full 12-bit resolution.
It supports single-ended analog input referenced to GND, operates with reduced full-scale spans down to 1.4V, and delivers 73dB SNR and –84dB THD at 124kHz input frequency. Timing is defined by CONV-triggered acquisition (1μs tACQ) and conversion (3μs tCONV), with SDO output enabled on CONV low and data valid on falling SCK edge.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Sampling Rate | 250ksps maximum - enables real-time capture of signals up to 124kHz without aliasing in undersampling applications. |
| Resolution & Linearity | 12-bit with ±0.25LSB typical INL/DNL - ensures monotonicity and <0.1% full-scale error across temperature. |
| Dynamic Performance | 73dB SNR, –84dB THD at 124kHz - supports high-fidelity signal digitization in noise-sensitive measurement systems. |
| Power Consumption | 0.75mA at 250ksps, 0.1μA in sleep mode - reduces average system power by >99% during idle intervals. |
| Analog Input Range | 0V to VREF, VREF = 1.4V to VDD - allows direct connection to low-voltage sensors without external gain stages. |
| Digital Interface | SPI/MICROWIRE-compatible 3-wire serial I/O with MSB-first 12-bit output and trailing zeros - simplifies MCU/DSP firmware integration. |
| Temperature Range | –40°C to +125°C - qualified for under-hood automotive, industrial motor control, and harsh-environment monitoring. |
Pinout & Package
Package: 8-lead plastic TSOT-23 (TS8), 2.9mm × 1.6mm × 0.8mm, moisture sensitivity level 1, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive analog supply | 2.35V–3.6V main supply; powers internal analog circuitry and defines upper limit for VREF. |
| VREF (Pin 2) | External reference input | 1.4V–VDD reference voltage source; sets full-scale analog input range (0V to VREF) and resolution (342μV min). |
| GND (Pin 3) | Analog ground | Primary return path for analog signals; must connect directly to solid ground plane to minimize noise coupling. |
| AIN (Pin 4) | Analog input | Single-ended input referenced to GND; accepts 0V to VREF with ±1μA leakage and 4pF dynamic capacitance during conversion. |
| OVDD (Pin 5) | Digital output supply | 1.0V–VDD supply for SDO driver; enables level-shifting to 1.8V/2.5V/3V logic without external level translators. |
| SDO (Pin 6) | Serial data output | Three-state, MSB-first 12-bit output; driven only when CONV is low; transitions on falling SCK edge. |
| SCK (Pin 7) | Serial clock input | Accepts up to 25MHz clock; synchronizes data transfer; timing margins defined for 10pF load. |
| CONV (Pin 8) | Convert control input | Active-high trigger; rising edge initiates conversion; falling edge enables SDO and clocks out data. |
Key Features
| Feature | Design Value |
|---|---|
| Dedicated VREF and OVDD pins | Enables independent optimization of analog accuracy (via precision reference) and digital compatibility (via flexible OVDD). |
| No data latency | Conversion result is available immediately after tTHROUGHPUT = 4μs - eliminates pipeline delay in closed-loop control. |
| Automatic sleep mode | Draws only 0.1μA between conversions - critical for battery-powered systems requiring multi-year operational life. |
| Reduced full-scale span support | Operates down to 1.4V VREF - permits direct digitization of low-output transducers (e.g., thermopiles, strain gauges) without amplification. |
| Guaranteed –40°C to +125°C operation | Validated across full temperature range - eliminates derating calculations for automotive and industrial thermal management designs. |
Applications
| Automotive Engine Control Unit (ECU) | Portable Medical Instrumentation |
|---|---|
Use Scenario: Digitizing crankshaft position sensor and oxygen sensor outputs in engine management systems under hood temperatures up to 125°C. IC Role / Device Role / Timing Role: High-accuracy, low-latency analog front-end ADC capturing fast transient signals with minimal power draw between combustion cycles. Use Value: Eliminates need for external reference buffers and level shifters while meeting AEC-Q100 Grade 0 thermal requirements. |
Use Scenario: Sampling ECG and pulse oximetry sensor outputs in handheld diagnostic devices powered by coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-power 12-bit converter enabling >100-hour battery life via aggressive sleep-mode duty cycling. Use Value: 0.1μA sleep current and 1.4V minimum VREF allow direct interfacing with low-voltage biosensors without gain stages. |
| Industrial Motor Drive Current Sensing | Uninterruptible Power Supply (UPS) Monitoring |
Use Scenario: Measuring phase current feedback in compact inverter modules where PCB space and thermal dissipation are constrained. IC Role / Device Role / Timing Role: High-speed sampling ADC with 250ksps throughput and 73dB SNR for accurate current reconstruction in FOC algorithms. Use Value: TSOT-23-8 footprint minimizes layout area; OVDD pin supports direct interface to 1.8V FPGA control logic. |
Use Scenario: Monitoring battery voltage, DC bus voltage, and load current in line-interactive UPS units operating continuously at elevated ambient temperatures. IC Role / Device Role / Timing Role: Robust, high-reliability ADC performing periodic health checks with guaranteed operation from –40°C to 125°C. Use Value: Full-specified performance across extended temperature range avoids calibration drift and field failures in sealed enclosures. |
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 |
|---|---|---|---|
| ADS7953IRGET | 12-bit, 1MSPS, 16-channel multiplexed SAR ADC; requires external reference and higher supply current (2.5mA active). | Designed for multi-sensor data acquisition with integrated MUX; not pin-compatible and larger QFN package. | Select when channel count >1 is required and higher throughput justifies increased power and board area. |
| MAX11100ETE+ | 12-bit, 500ksps, TSOT-23-6 package; no dedicated VREF or OVDD pins; uses VDD as reference and digital supply. | Limited to 0V–VDD input range and single-supply logic compatibility; lacks flexibility for mixed-voltage systems. | Select for cost-sensitive, space-constrained designs where reference and logic voltage matching simplifies BOM. |
Compared with ADS7953IRGET and MAX11100ETE+, the LTC2361HTS8#TRPBF uniquely balances ultra-small TSOT-23-8 size, dual-supply flexibility (VREF/OVDD), and guaranteed high-temperature operation - making it optimal for thermally demanding, single-channel precision sensing where layout area and power budget are critical.
Availability
LTC2361HTS8#TRPBF is available at Aetrix Electronics and suitable for automotive engine control, portable medical instrumentation, industrial motor drive current sensing, and uninterruptible power supply monitoring requiring stable component supply across extended temperature ranges.
Supply support for LTC2361HTS8#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 LTC2361HTS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition portfolio, designed specifically for ultra-low-power, high-speed, single-channel 12-bit SAR ADC applications in thermally challenging environments.
FAQ
What is the maximum sampling rate supported by the LTC2361HTS8#TRPBF?
The LTC2361HTS8#TRPBF supports a maximum sampling rate of 250ksps. This is fixed by its internal oscillator and architecture - unlike programmable ADCs, this rate is not adjustable via external clock or configuration registers. At this rate, the device achieves 73dB SNR and consumes 0.75mA from a 3V supply, with throughput time of 4μs per conversion.
Does the LTC2361HTS8#TRPBF require an external reference voltage?
Yes, the LTC2361HTS8#TRPBF requires an external reference voltage applied to Pin 2 (VREF). It accepts 1.4V to VDD (max 3.6V), and the analog input range is strictly 0V to VREF. The device does not include an internal reference; using VDD as reference is only possible in the 6-lead S6-package variants, not the TS8 package of the LTC2361HTS8#TRPBF.
Can the LTC2361HTS8#TRPBF interface directly with a 1.8V microcontroller?
Yes, the LTC2361HTS8#TRPBF can interface directly with a 1.8V microcontroller via its OVDD pin (Pin 5). By supplying 1.8V to OVDD, the SDO output swing is referenced to that voltage, ensuring compatible logic levels without external level shifters. VDD and VREF may remain at 3.0V or 3.3V to maintain analog performance.
What is the purpose of the CONV pin on the LTC2361HTS8#TRPBF?
The CONV pin (Pin 8) serves two critical functions: a rising edge initiates conversion and places SDO in high-impedance state, while a falling edge enables SDO output and clocks out the 12-bit result on subsequent SCK edges. Holding CONV high after conversion automatically places the device in 0.1μA sleep mode - a core feature enabling ultralow average power in duty-cycled systems.
Is the LTC2361HTS8#TRPBF suitable for automotive under-hood applications?
Yes, the LTC2361HTS8#TRPBF is explicitly qualified for –40°C to +125°C operation (H-grade), making it suitable for automotive under-hood applications such as engine control, transmission sensing, and battery monitoring. Its guaranteed specifications - including SNR, INL, and timing - are validated across this full range, eliminating need for derating or external thermal compensation.
LTC2361HTS8#TRPBF 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):
- 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 ~ 125°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2361HTS8#TRPBF FAQ
1.How can I place an order for LTC2361HTS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2361HTS8#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 LTC2361HTS8#TRPBF reliable?
The price and inventory of LTC2361HTS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2361HTS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2361HTS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2361HTS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2361HTS8#TRPBF?
LTC2361HTS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2361HTS8#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 LTC2361HTS8#TRPBF?
For technical support, including LTC2361HTS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2361HTS8#TRPBF requirements.
6.How does Aetrix verify that LTC2361HTS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2361HTS8#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 LTC2361HTS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2361HTS8#TRPBF?
All LTC2361HTS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2361HTS8#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 LTC2361HTS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC2361HTS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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