LTC2366ITS8 - 12-Bit 3Msps Serial SAR ADC | Analog Devices
部品番号: LTC2366ITS8 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $5.2 | $5.20 |
| 10 | $4.65 | $46.50 |
| 100 | $4.1 | $410.00 |
| 500 | $3.65 | $1,825.00 |
| 1,000 | $3.2 | $3,200.00 |
LTC2366ITS8 概要
A SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter that performs a binary search against the analog input using an internal DAC and comparator, producing one conversion per N bit-clock cycles. SAR ADCs are valued in precision data-acquisition systems because they sample the input on a single aperture, exhibit zero pipeline latency, and provide excellent DC accuracy with low power consumption - ideal attributes when a system must respond to multiplexed or transient analog events without delay. The LTC2366 family sits within the SAR ADC hierarchy: ADC -> data converter -> signal chain IC -> mixed-signal semiconductor.
Key features of the LTC2366 include a high dynamic range sample-and-hold front end, automatic Nap and Sleep power-down modes between conversions, a dedicated REF pin for an external reference, and an SDO line that goes high-impedance when CS is de-asserted to allow multiple parts to share a SPI bus. The TSOT-23-8 footprint is among the smallest available for any 12-bit ADC in this speed class, enabling dense multi-channel data-acquisition front ends on compact PCBs.
Architecturally the LTC2366 combines a charge-redistribution DAC array with a low-noise comparator and on-chip clock generator. The external reference (typically 2.5 V or 3.0 V) sets full-scale range; the wide-input-tolerance single-supply design simplifies power-tree design in 3.3 V systems. Latency is one conversion cycle, with throughput controlled by the SCK frequency and CS framing.
Typical applications include portable instrumentation, isolated data acquisition, multi-channel multiplexed sensor front ends, motor control feedback loops, optical sensor read-out, and process-control analog input modules. Industrial automation modules and battery-powered handheld meters benefit from its low 2.6 mA active current and sub-microamp Sleep mode. The wide SINAD margin also allows direct connection to high-impedance bridge sensors or audio-bandwidth signal sources when paired with appropriate input buffers.
When designing with this part, ensure the reference bypass network uses a high-quality ceramic capacitor close to the REF pin to avoid conversion noise, and keep the SCK trace impedance-controlled to prevent coupling into the analog input. The Nap/Sleep duty-cycle can be tuned to average supply current well below the active 2.6 mA figure for duty-cycled battery systems.
This page synthesizes distributor pricing, drop-in alternatives drawn from the same LTC236x family and competitor parametric equivalents, and practical PCB design notes that are not collated in the manufacturer datasheet.
ドロップイン代替品: LTC2366ITS8 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: LTC2366ITS8 （同一形状・フットプリント） — 相違点: Package, Sample Rate, Supply Voltage, Resolution, Architecture.
クイック比較ツール — 並列比較する代替部品を選択:
LTC2365ITS8
✅ ドロップイン✓ 在庫あり
$3.58 / 個
データシートを見る →LTC2366ITS8#TRPBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC2366ITS8#TRMPBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC2366CTS8#TRMPBF
✅ ドロップイン📋 参考代替品（カタログ未掲載）
LTC2361ITS8
✅ ドロップイン ⚠️ 仕様未検証✓ 在庫あり
$2.62 / 個
データシートを見る →LTC2366ITS8 最大定格＆電気的特性
| Part Number | LTC2366ITS8 |
| Manufacturer | Analog Devices (formerly Linear Technology) |
| 分解能 | 12 bit |
| トポロジー | SAR (Successive Approximation Register) |
| Sample Rate | 3 Msps |
| Number of Channels | 1 input |
| 電源電圧 | 2.35 V to 3.6 V (single supply, 3 V nominal) |
| 電源電流 | 2.6 mA at 3 Msps (3 V supply) |
| Input Range | 0 V to VDD (unipolar, true ground-referenced) |
| SINAD | 72 dB at 3 Msps |
| THD | -80 dB at 3 Msps |
| インターフェース | Serial SPI / QSPI / MICROWIRE-compatible |
| Power-Down Modes | Nap and Sleep modes |
| パッケージ | TSOT-23-8 |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
| 動作温度範囲 | -40C to +85C (industrial) |
LTC2366ITS8 ピン構成
| ピン 1 | VDD — Analog supply input (2.35 V to 3.6 V) |
| ピン 2 | IN+ — Analog input (0 V to VDD unipolar) |
| ピン 3 | GND — Analog ground |
| ピン 4 | REF — External reference input (sets full-scale) |
| ピン 5 | SCK — Serial clock input |
| ピン 6 | SDO — Serial data output (high-Z when CS high) |
| ピン 7 | CS — Chip select input (active low) |
| ピン 8 | GND — Analog ground |
主な用途
LTC2366ITS8 の用途: 6 件s: Portable Battery-Powered Instrumentation, Multi-Channel Sensor Data Acquisition, Motor Control Feedback Loop, Optical Sensor Readout, Industrial Process Control Analog Input Modules, Audio-Bandwidth Signal Capture.
Portable Battery-Powered Instrumentation
The LTC2366ITS8 fits portable battery-powered instrumentation by combining 12-bit resolution at 3 Msps with only 2.6 mA supply current on a 3 V rail. When used as the analog front-end of a handheld multimeter or data logger, its Nap and Sleep modes allow the system controller to duty-cycle conversions and drop average current below 100 uA between samples. The TSOT-23-8 footprint is among the smallest available for any 12-bit ADC in this speed class, freeing PCB area for the battery, display, and user interface. Compared with 16/18-bit ADCs in the same class, the LTC2366ITS8 offers a deliberate trade-off: lower resolution in exchange for higher sample rate and lower power.
おすすめ
Multi-Channel Sensor Data Acquisition
The LTC2366ITS8's SDO line goes high-impedance when CS is de-asserted, enabling multiple parts to share a single SPI bus in multi-channel multiplexed data-acquisition front ends. Its 72 dB SINAD at 3 Msps provides ample dynamic range for thermocouple, strain gauge, and process-control analog signals when paired with a low-noise input buffer. The 0 V to VDD true-ground-referenced input eliminates the need for bipolar biasing networks, simplifying signal-chain design in industrial sensor modules. The 3 Msps throughput is also sufficient for vibration monitoring, where sampling above Nyquist of audio-bandwidth mechanical resonances is critical.
おすすめ
Motor Control Feedback Loop
The LTC2366ITS8's 3 Msps sample rate and one-cycle SAR latency make it a strong fit for current-sense feedback loops in BLDC and PMSM motor drives. By sampling the shunt or Hall-sensor-derived current at 3 Msps, the digital controller has enough fresh data per PWM cycle to compute precise torque commands without oversampling-induced aliasing. The single 3 V supply rail integrates naturally with 3.3 V logic-level DSP or MCU controllers. The 8-pin TSOT-23 footprint allows the ADC to be placed adjacent to the current-sense amplifier, minimizing trace-length noise pickup near the high-di/dt switching node.
おすすめ
Optical Sensor Readout
The LTC2366ITS8 is well-suited to optical sensor readout applications such as photodiode arrays, light meters, and optical encoders, where its 72 dB SINAD and -80 dB THD preserve signal fidelity across a wide dynamic range. The 0 V to VDD input range aligns naturally with photodiode transimpedance amplifier outputs biased around ground. At 3 Msps the part can sample multi-channel photodiode arrays via external multiplexer switching, building a compact spectrometer-grade data-acquisition channel. The TSOT-23-8 footprint enables placement directly under the sensor, shortening analog trace lengths and reducing EMI pickup.
おすすめ
Industrial Process Control Analog Input Modules
The LTC2366ITS8 is qualified for industrial process-control analog input modules thanks to its -40C to +85C industrial temperature range and RoHS compliance. Its single-supply 2.35 V to 3.6 V operation matches 3.3 V industrial backplanes, eliminating the need for additional negative rails. The 12-bit resolution is sufficient for 4-20 mA loop digitization, thermocouple cold-junction compensation, and 0-10 V process signal capture when paired with input protection networks. The 3 Msps throughput also enables simultaneous sampling of multiple process variables via external multiplexers, simplifying PLC and DCS analog input card design.
おすすめ
Audio-Bandwidth Signal Capture
With -80 dB THD at 3 Msps, the LTC2366ITS8 is well-suited for audio-bandwidth signal capture up to the full Nyquist bandwidth, suitable for sub-Nyquist audio sampling in test and measurement instruments. While its 12-bit resolution is below audiophile 16/24-bit DAC standards, the part is a strong fit for acoustic measurement microphones, sonar hydrophone arrays, and audio-bandwidth vibration analyzers where the goal is data capture rather than playback fidelity. The 0 V to VDD input range accepts DC-coupled audio signals directly from bias-biased microphone pre-amplifiers.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: LTC2366ITS8 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | LTC2365ITS8 | LTC2366ITS8#TRPBF | LTC2366ITS8#TRMPBF | LTC2366CTS8#TRMPBF | LTC2361ITS8 |
|---|---|---|---|---|---|---|
| Package | TSOT-23-8 | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same | TSOT-23-8 - same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Sample Rate | 3 Msps | 1 Msps | 3 Msps | 3 Msps | 3 Msps | 250 ksps |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | 0C to +70C | -40C to +85C |
| Interface | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE | SPI/QSPI/MICROWIRE |
| Input Range | 0 V to VDD | 0 V to VDD | 0 V to VDD | 0 V to VDD | 0 V to VDD | 0 V to VDD |
主な差別化要因
- Full 3 Msps throughput at 2.6 mA on single 3 V supply （vs LTC2365ITS8)
- Industrial temperature grade qualification （vs LTC2366CTS8#TRMPBF)
- Industry-standard 72 dB SINAD at 3 Msps （vs LTC2361ITS8)
設計ノート
The LTC2366ITS8 draws 2.6 mA at 3 Msps from a 3 V supply. The Nap and Sleep power-down modes allow the host controller to duty-cycle conversions for battery-powered applications. Place a 0.1 uF ceramic decoupling capacitor as close as possible to the VDD pin (pin 1), and add a 10 uF bulk capacitor on the supply rail. When operating in Sleep mode between conversions, the SCK line must remain idle for the part to fully enter low-power state.
Route the analog input IN+ (pin 2) and reference REF (pin 4) traces away from the SCK (pin 5), SDO (pin 6), and CS (pin 7) digital lines to prevent coupling. Use a ground plane on layer 2 to provide a low-impedance return path for both analog and digital currents. Place the REF bypass capacitor (typically 10 uF ceramic in parallel with 0.1 uF) directly at pin 4 - reference stability is the dominant contributor to conversion noise.
Do not leave the CS pin floating; tie it to a logic controller output or pull it high during reset to keep the SDO line in high-impedance state. When chaining multiple LTC2366 parts on a single SPI bus, ensure only one CS is asserted at a time. Avoid driving SCK faster than the maximum rated frequency when operating at the high end of the supply voltage range - SCK edge timing degrades with higher supply.
コンプライアンス情報
RoHS compliant per Analog Devices product page. Lead-free (Pb-free) finish per the #TRPBF suffix. AEC-Q100 not applicable - this part is not automotive-qualified; choose an AEC-Q100 part for automotive applications.
