LTC2362ITS8 - 500ksps 12-Bit Serial ADC | Analog Devices
MPN: LTC2362ITS8 ✓ פעילLTC2362ITS8 סקירה
A SAR ADC is a successive-approximation-register analog-to-digital converter that uses a binary search across an internal capacitive DAC to resolve each conversion in N clock cycles. SAR ADCs offer deterministic latency, no pipeline delay, and excellent DC accuracy, which makes them the architecture of choice for multiplexed data-acquisition systems, industrial sensor front-ends, and precision instrumentation where every sample's timing relationship to the input must be exact.
Key features of the LTC2362ITS8 include 12-bit resolution, 500 ksps throughput, an integrated low-drift reference, 1.1 mA typical supply current at full speed, automatic power-down between conversions to reduce average current, and a wide input common-mode range. The TSOT-23-8 footprint is roughly half the board area of an MSOP-10, making this part attractive for space-constrained designs. The supply current drops automatically at lower sample rates, supporting battery-powered applications without sacrificing dynamic performance.
Architecturally, the device combines a sample-and-hold amplifier, a charge-redistribution DAC, a comparator, and a SAR control state machine. The 3-wire serial interface (CS, SCK, SDO) is compatible with standard SPI and Microwire controllers, requiring no external configuration registers - the part is hardware-strapped for 12-bit mode at 500 ksps. Internal calibration on power-up trims offset and linearity, simplifying software bring-up.
Typical applications include portable instrumentation, battery-powered data loggers, isolated industrial sensor front-ends, and general-purpose multi-channel analog monitoring where the SPI output feeds a microcontroller or FPGA. The combination of high speed, small package, and low current also suits handheld medical sensors and 4-20 mA loop-powered smart transmitters.
When designing with the LTC2362ITS8, place a 0.1 uF decoupling capacitor within 2 mm of the VDD pin and keep the analog input traces short and guarded. The reference is internal, so an external bypass of 1 uF is recommended. Ensure the SPI SCK frequency does not exceed the device's maximum to maintain conversion accuracy at full throughput.
This page synthesizes real-time distributor pricing, drop-in compatible same-family variants, and practical PCB-level design guidance not found in the manufacturer datasheet alone.
חלופות תחליף ישיר עבור LTC2362ITS8 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם LTC2362ITS8 (אותו גורם צורה וטביעת רגל) — שונים ב Operating Temperature, RoHS Status, Package, Sample Rate, Supply Voltage.
LTC2361ITS8
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2360HTS8
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2361HTS8
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2312HTS8-14
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2313HTS8-14
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2314HTS8-14
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←LTC2362ITS8 דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 12 bits |
| Sample Rate | 500 ksps |
| Architecture | SAR (Successive Approximation Register) |
| Number of Input Channels | 1 |
| מתח אספקה | 2.7 V to 3.6 V (single 3 V supply) |
| Supply Current (Full Speed) | 1.1 mA |
| Supply Current (Auto Power-Down) | Reduces at lower sample rates |
| Input Type | Single-ended |
| ממשק | SPI / Microwire compatible (3-wire serial) |
| Reference | Internal |
| טמפרטורת פעולה | -40 C to +85 C (Industrial) |
| מארז | TSOT-23-8 |
| סוג הרכבה | Surface Mount |
| סטטוס RoHS | Compliant |
| מספר פינים | 8 |
תצורת פינים של LTC2362ITS8
| פין 1 | IN — Analog input (single-ended) |
| פין 2 | GND — Ground |
| פין 3 | REF — Reference bypass - connect 1uF to GND |
| פין 4 | VDD — Power supply input (2.7V to 3.6V) |
| פין 5 | SDO — Serial data output |
| פין 6 | SCK — Serial clock input |
| פין 7 | CS — Chip select input (active low) |
| פין 8 | NC — Not connected (per datasheet) |
יישומים טיפוסיים
LTC2362ITS8 מתאים עבור 6 יישוםs: Portable Data Acquisition, Industrial Sensor Monitoring, Battery-Powered Sensor Nodes, Precision Instrumentation, Process Control and PLCs, Handheld Medical Devices.
Portable Data Acquisition
The LTC2362ITS8 fits portable data acquisition because it draws only 1.1 mA at 500 ksps and reduces current automatically at lower sample rates. According to the datasheet, the integrated reference and SPI interface eliminate external components, while the TSOT-23-8 footprint shrinks the analog front-end to roughly 5 mm squared - ideal for handheld DMMs, oscilloscope probes, and field data loggers. Compared to a 14-bit 500 ksps alternative, the LTC2362ITS8 trades some resolution for lower current and lower cost.
מומלץ
Industrial Sensor Monitoring
The LTC2362ITS8 is well matched to industrial 4-20 mA loop-powered and isolated sensor monitoring because its 12-bit resolution and 500 ksps throughput capture fast transients on temperature, pressure, and flow signals. According to the datasheet, the SPI output drives an isolated digital isolator cleanly, and the -40 C to +85 C industrial temperature grade covers most factory environments. The TSOT-23-8 package allows analog front-end circuitry to fit on a small DIN-rail sensor PCB alongside signal conditioning.
מומלץ
Battery-Powered Sensor Nodes
The LTC2362ITS8 suits battery-powered sensor nodes such as wireless environmental monitors and wearable health patches. According to the datasheet, the device's automatic power-down between conversions reduces average supply current to below 100 uA in low-duty-cycle operation, extending coin-cell runtime. The single 3 V supply aligns directly with CR2032 or single-cell Li-ion chemistries, and the TSOT-23-8 footprint keeps the analog section compact enough to sit alongside a BLE SoC and a coin-cell holder on a 20 mm PCB.
מומלץ
Precision Instrumentation
The LTC2362ITS8 is a strong fit for precision benchtop instrumentation including multimeters, source-measurement units, and lab data-acquisition boards. According to the datasheet, the integrated low-drift reference and 12-bit SAR architecture provide good DC linearity and deterministic latency that simplifies averaging and calibration. The 500 ksps throughput is sufficient to multiplex several analog channels with one ADC, and the SPI clock scales easily with the host FPGA or DSP in the instrument.
מומלץ
Process Control and PLCs
The LTC2362ITS8 is suitable for analog input modules on PLCs and process controllers where a small-footprint, low-power, single-channel SAR ADC captures a single 0-10 V or 4-20 mA conditioned signal per chip. According to the datasheet, the 3-wire SPI integrates with most industrial MCUs and FPGAs, and the 1.1 mA full-speed current is negligible against typical PLC backplane budgets. Designers often pair the part with a digital isolator for high-voltage industrial isolation barriers.
מומלץ
Handheld Medical Devices
The LTC2362ITS8 fits handheld medical devices such as pulse oximeters, blood-glucose meters, and portable ECG monitors that need to digitize low-frequency biosignals at modest rates. According to the datasheet, the integrated reference and small package simplify FDA documentation by reducing the analog BOM count, while 500 ksps provides ample headroom for oversampling to improve effective resolution. The 3 V supply matches single-cell Li-ion or 2 x AA battery stacks common in patient-facing equipment.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור LTC2362ITS8 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | LTC2361ITS8 | LTC2360HTS8 | LTC2312HTS8-14 |
|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | TSOT-23-8 | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same |
| Resolution | 12 bits | 12 bits | 12 bits | 14 bits |
| Sample Rate | 500 ksps | 250 ksps | 100 ksps | 500 ksps |
| Supply Current (Full Speed) | 1.1 mA | 0.75 mA | 0.5 mA | 2.7 mA |
| Temperature Grade | Industrial -40C to +85C | Industrial -40C to +85C | H-grade -40C to +125C | H-grade -40C to +125C |
| Interface | SPI / Microwire | SPI / Microwire | SPI / Microwire | SPI / Microwire |
| Reference | Internal | Internal | Internal | Internal |
מבדילים עיקריים
- Highest sample rate in the TSOT-23-8 LTC236x family (לעומתLTC2361ITS8)
- Internal reference eliminates external reference BOM (לעומתADS8318)
- Smaller footprint than MSOP-10 SAR alternatives (לעומתLTC2312HTS8-14)
הערות תכנון
Place a 0.1 uF X7R ceramic decoupling capacitor within 2 mm of the VDD pin, with the trace to the pin kept short and wide. The LTC2362ITS8's internal reference requires an additional 1 uF bypass on the REF pin to ground to maintain specified noise performance; do not omit this capacitor as it directly impacts AC parameters like SINAD.
Route the analog input trace on the top layer with a continuous ground pour underneath; avoid routing the digital SCK, SDO, and CS lines over or under the analog input trace. Use a single-point star ground at the LTC2362ITS8 GND pin, with the analog and digital grounds joined at the same point. Keep the analog input path short and guarded by ground to minimize coupled noise at 500 ksps.
Do not exceed the maximum SCK frequency specified in the datasheet, otherwise the ADC will not complete conversions correctly at 500 ksps. When using a long SPI cable or isolator with significant propagation delay, account for that delay in the SCK-to-SDO timing budget. The CS pin must be held low for the full 12 SCK cycles; releasing it earlier truncates the result.
מידע על תאימות
RoHS and REACH compliant per Analog Devices product page. Not AEC-Q100 qualified - choose the LTC2360HTS8 or LTC231x HTS8 variants for high-temperature industrial applications. Lead-free TSOT-23-8 package per JESD97 e3 standard.
