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Analog Devices Inc. LTC2361CTS8#TRPBF
- Part No.:
- LTC2361CTS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- SOT-23-8 Thin, TSOT-23-8
- Datasheet:
-
LTC2361CTS8#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR TSOT23-8
- Quantity:
- Payment:
- Shipping:
Inventory:2,708
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Product details
Overview
LTC2361CTS8#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 250ksps 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. It features dedicated VREF and OVDD pins, 0V–VREF analog input range (down to 1.4V full-scale), SPI/MICROWIRE-compatible serial interface, and no data latency. It is used in battery-powered data acquisition systems requiring high resolution and low power.
For engineers reviewing the LTC2361CTS8#TRPBF datasheet, LTC2361CTS8#TRPBF pinout, LTC2361CTS8#TRPBF application, or LTC2361CTS8#TRPBF equivalent, key selection criteria include its 250ksps sampling rate, 73dB SNR, 12-bit no-missing-codes performance, –40°C to 85°C industrial temperature range, and TSOT-23-8 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC2361CTS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, controlled by an internal oscillator enabling precise 250ksps throughput. Its timing is fully synchronous to the external SCK clock for data readout, with conversion initiated by a rising edge on CONV and data valid after fixed tACQ + tCONV = 4μs.
It supports flexible reference configuration via dedicated VREF (1.4V–VDD), independent digital output swing via OVDD (1.0V–VDD), and high-impedance analog input (±1μA leakage, 4pF during conversion). Sleep mode reduces supply current to 0.1μA when CONV remains high post-conversion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonicity and full code coverage across full-scale range. |
| Sampling Rate | 250ksps maximum - enables real-time capture of signals up to 125kHz Nyquist bandwidth. |
| SNR | 73dB at fIN = 124kHz - supports >11.8 effective bits for precision sensor digitization. |
| Supply Current | 0.75mA at 250ksps, 0.1μA in sleep - enables microamp-level system power budgeting between conversions. |
| Analog Input Range | 0V to VREF (1.4V to VDD) - allows direct interfacing with low-voltage sensors without gain stages. |
| Digital I/O Supply | OVDD = 1.0V to VDD - permits interoperability with 1.8V/2.5V/3.0V logic domains independent of VDD. |
| Operating Temp | –40°C to +85°C - qualified for industrial and automotive under-hood environments. |
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 core ADC and sample-and-hold; defines max VREF but not input span. |
| VREF (Pin 2) | External reference input | 1.4V–VDD reference voltage; sets full-scale analog input range (0V to VREF); requires 2.2μF bypass. |
| GND (Pin 3) | Analog ground | Primary return path for analog circuitry; must connect directly to solid ground plane. |
| AIN (Pin 4) | Analog input | Single-ended, high-impedance (±1μA leakage, 4pF during conversion); referenced to GND, 0V–VREF range. |
| OVDD (Pin 5) | Digital output supply | 1.0V–VDD supply for SDO driver; sets logic-high level independently of VDD; requires 2.2μF bypass. |
| SDO (Pin 6) | Serial data output | Three-state, MSB-first SPI/MICROWIRE output; enabled only when CONV = low; outputs 12-bit result + trailing zeros. |
| SCK (Pin 7) | Serial clock input | Input-synchronous clock (max 25MHz); data transitions on falling edge; timing-critical for setup/hold compliance. |
| CONV (Pin 8) | Convert control input | Active-high conversion trigger; rising edge initiates sampling; falling edge enables SDO and clocks out data. |
Key Features
| Feature | Design Value |
|---|---|
| No data latency | Conversion result available immediately after tTHROUGHPUT (4μs), eliminating pipeline delay in closed-loop control. |
| Independent OVDD | Enables SDO to drive 1.8V logic while VDD operates at 3.3V, simplifying mixed-voltage system integration. |
| Reduced full-scale span | Supports 1.4V minimum VREF, achieving 342μV LSB resolution for low-amplitude sensor signals. |
| Automatic sleep mode | Draws only 0.1μA after conversion if CONV stays high - eliminates need for external power-gating logic. |
| Industrial temperature grade | Specified over –40°C to +85°C with guaranteed INL (±1 LSB), DNL (±1 LSB), and SNR performance. |
Applications
| Portable Data Loggers | Automotive Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitoring units logging temperature, pressure, and humidity over weeks on coin-cell energy. IC Role / Device Role / Timing Role: Primary analog front-end ADC acquiring conditioned sensor outputs at 100–250ksps with minimal quiescent current. Use Value: 0.75mA active current and 0.1μA sleep current extend battery life; 12-bit resolution captures subtle drift in calibrated sensors. | Use Scenario: Engine control unit subsystem measuring throttle position, coolant temperature, and manifold pressure in harsh under-hood conditions. IC Role / Device Role / Timing Role: High-reliability signal digitizer interfacing with ratiometric sensors and delivering time-aligned samples to MCU. Use Value: –40°C to +85°C operation ensures stability; dedicated VREF rejects supply noise; OVDD compatibility avoids level-shifters with 1.8V CAN/FlexRay controllers. |
| Industrial PLC Analog Inputs | Medical Wearable Sensors |
Use Scenario: Modular I/O modules in programmable logic controllers requiring isolated, high-accuracy 4–20mA loop receiver digitization. IC Role / Device Role / Timing Role: Precision ADC capturing filtered current-loop voltage drops with low THD (–84dB) to preserve signal integrity. Use Value: 73dB SNR and ±1 LSB INL meet Class A accuracy requirements; TSOT-23 footprint saves board space in dense backplane designs. | Use Scenario: ECG/PPG patch devices digitizing biopotential signals with ultra-low power and small form factor constraints. IC Role / Device Role / Timing Role: Low-noise, low-power ADC sampling bio-sensors at 250ksps for real-time waveform reconstruction. Use Value: 0.75mA supply current at full rate enables multi-minute continuous acquisition on miniature LiPo cells; 12-bit resolution resolves microvolt-level cardiac features. |
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, no OVDD pin, 6-pin SOT-23 package | Lacks independent OVDD and reduced-span capability; limited to higher-voltage systems | Select when cost-sensitive designs accept lower speed and require no 1.8V logic interfacing. |
| MAX11166ETE+ | 500ksps, 12-bit, 1.8–3.6V supply, internal reference, 12-pin TDFN | Higher speed but larger package and no external VREF flexibility; includes internal REF but no OVDD control | Select when maximum throughput is critical and board area allows 3×3mm TDFN; avoid when external reference calibration is required. |
Compared with ADS7822U and MAX11166ETE+, the LTC2361CTS8#TRPBF uniquely balances 250ksps speed, ultra-low sleep current (0.1μA), dual-supply flexibility (VREF + OVDD), and TSOT-23-8 compactness-making it optimal for space- and power-constrained industrial and portable systems requiring design-in longevity.
Availability
LTC2361CTS8#TRPBF is available at Aetrix Electronics and suitable for portable data loggers, automotive sensor interfaces, and industrial PLC analog inputs requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC2361CTS8#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 LTC2361CTS8#TRPBF belongs to ADI's precision SAR ADC product line, designed specifically for low-power, high-resolution data acquisition in space-constrained, battery-operated, and thermally demanding applications.
FAQ
What is the maximum sampling rate supported by the LTC2361CTS8#TRPBF?
The LTC2361CTS8#TRPBF supports a maximum sampling rate of 250ksps, as specified in its datasheet timing characteristics. This rate is guaranteed over the full –40°C to +85°C operating temperature range and with VDD = 2.35V to 3.6V. At this rate, the device draws 0.75mA typical supply current and achieves 73dB SNR at 124kHz input frequency.
Does the LTC2361CTS8#TRPBF require an external reference voltage?
Yes, the LTC2361CTS8#TRPBF requires an external reference voltage applied to the VREF pin (Pin 2). The VREF range is 1.4V to VDD, and it directly defines the full-scale analog input range (0V to VREF). Unlike some ADCs with internal references, the LTC2361CTS8#TRPBF relies on this externally supplied, bypassed reference for accuracy and flexibility.
Can the LTC2361CTS8#TRPBF interface with 1.8V logic systems?
Yes, the LTC2361CTS8#TRPBF can interface with 1.8V logic systems using its dedicated OVDD pin (Pin 5). By supplying 1.8V to OVDD, the SDO output swing is referenced to that voltage, ensuring compatible logic-high and logic-low levels. VDD may remain at 3.0V or 3.3V for analog performance, providing true mixed-voltage operation without level shifters.
What is the sleep current of the LTC2361CTS8#TRPBF and how is it activated?
The LTC2361CTS8#TRPBF draws 0.1μA typical supply current in sleep mode. Sleep mode activates automatically after conversion completion when the CONV pin remains high. During sleep, all bias currents are shut down; only leakage paths remain active. The device exits sleep and acquires a new sample within tACQ = 1μs after CONV goes low.
Is the LTC2361CTS8#TRPBF pin-compatible with other members of the LTC236x family?
Yes, the LTC2361CTS8#TRPBF shares identical pinout and package (TSOT-23-8) with the LTC2360CTS8#TRPBF and LTC2362CTS8#TRPBF. All three devices use the same VDD/VREF/GND/AIN/OVDD/SDO/SCK/CONV pin assignments and electrical interface, enabling drop-in speed upgrades or downgrades without PCB changes - provided timing and supply constraints are met.
LTC2361CTS8#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:
- 0°C ~ 70°C
- Supplier Device Package:
- TSOT-23-8
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2361CTS8#TRPBF FAQ
1.How can I place an order for LTC2361CTS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2361CTS8#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 LTC2361CTS8#TRPBF reliable?
The price and inventory of LTC2361CTS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2361CTS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2361CTS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2361CTS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2361CTS8#TRPBF?
LTC2361CTS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2361CTS8#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 LTC2361CTS8#TRPBF?
For technical support, including LTC2361CTS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2361CTS8#TRPBF requirements.
6.How does Aetrix verify that LTC2361CTS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2361CTS8#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 LTC2361CTS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2361CTS8#TRPBF?
All LTC2361CTS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2361CTS8#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 LTC2361CTS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC2361CTS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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