MAX1363MEUB+T - 12-Bit 4-Ch 133ksps SAR ADC | Analog Devices
MPN： MAX1363MEUB+T ✓ 啟用中MAX1363MEUB+T 概覽
A successive-approximation register (SAR) ADC is a precision data converter that uses a binary-search algorithm against an internal DAC to resolve an analog input to N-bit accuracy in N conversion clock cycles. ADCs of this type sit in the measurement-and-monitoring tier of the data-converter hierarchy (SAR ADC -> ADC -> data converter -> signal chain IC -> semiconductor). The MAX1363's specific subcategory - a system monitor - adds autonomous threshold comparison and a SMBus alert output, removing the burden of host-polled conversions in supervisory loops.
Key features include a factory-trimmed 2.048V internal reference (giving 0.5mV per LSB at 12 bits), ±0.5 LBN integral non-linearity (INL), a single 3V to 3.6V analog supply, low 0.5mA operating supply current, and a programmable window comparator that asserts an interrupt when an input crosses user-configured thresholds. Communication is via a 2-wire SMBus-compatible interface operating up to 400kHz, and the device supports an extended -40°C to +85°C industrial temperature range.
The MAX1363 differs from the sibling MAX1364 only in reference voltage (2.048V vs 4.096V); both occupy the same 10-pin µMAX footprint, so a design using the MAX1363 can be re-targeted to higher-voltage inputs by substituting the MAX1364 with no PCB rework. An internal 4MHz oscillator drives successive approximation, and the analog input structure supports true-rail inputs on the AIN pins when properly configured.
Typical applications include 12-bit system monitoring with threshold alerting, single-supply data acquisition front-ends, digital panel meters, battery-powered supervisory boards, and SMBus-managed analog sensor interfaces. Because of its alert pin and programmable thresholds, it is especially useful when the host MCU cannot continuously poll each input.
When designing with this device, ensure the 2.048V reference accuracy is acceptable for your LSB resolution (0.5mV/LSB) before deciding between the MAX1363 (2.048V) and MAX1364 (4.096V, 1mV/LSB). Note that 10-bit pin-compatible MAX1361/MAX1362 alternates can be used when 12-bit resolution is not required.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替換替代品，適用於 MAX1363MEUB+T — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MAX1363MEUB+T （相同外形與佔位） — 差異在於 Package, Operating Temperature Range, Window Comparator, Resolution, Sampling Rate.
MAX1363MEUB+
✅ 直接替換聯絡詢價
查看資料表 →MAX1364MEUB+T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX1364MEUB+
✅ 直接替換聯絡詢價
查看資料表 →MAX1361MEUB+T
✅ 直接替換聯絡詢價
查看資料表 →MAX1362MEUB+T
✅ 直接替換聯絡詢價
查看資料表 →MAX1363MEUB+T 最大額定值與電氣特性
| 解析度 | 12 bits |
| Number of Input Channels | 2 or 4 single-ended |
| Architecture | SAR (Successive Approximation) |
| 取樣率 | 133 ksps |
| Internal Reference | 2.048 V |
| Analog Supply Voltage | 3 V to 3.6 V |
| Operating Supply Current | 0.5 mA (typical, max value not in provided data) |
| Digital Interface | SMBus-compatible, up to 400 kHz |
| Window Comparator | Programmable, with interrupt/alert output |
| 工作溫度範圍 | -40 °C to +85 °C (extended industrial) |
| 封裝 | 10-pin µMAX (uSOP) |
| 安裝類型 | Surface Mount |
| Conversion Method | Proprietary SAR |
| Temperature Grade | Industrial |
| Terminal Form | Gull Wing |
| Number of Terminals | 10 |
MAX1363MEUB+T 10-pin µmax (usop) 腳位配置指南
MAX1363MEUB+T（10-pin µmax (usop) 封裝）的腳位配置。 此類比元件具有輸入、輸出與電源腳位。偏移歸零、補償與致能腳位配置請參閱製造商資料表。適用於訊號調理與放大器電路。
無詳細腳位定義資料： MAX1363MEUB+T.
請參閱 資料表 以查看完整腳位配置。
典型應用
MAX1363MEUB+T 適用於 7 應用s: 12-Bit System Monitor with Threshold Alerting, Battery-Powered Supervisory Boards, Digital Panel Meters and Instrumentation, Industrial Sensor Interface with SMBus Backplane, Automotive ECU Auxiliary Monitoring, Thermal and Power Rail Threshold Supervisor, Compact Data Acquisition Front-End for Embedded Linux.
12-Bit System Monitor with Threshold Alerting
The MAX1363MEUB+T's 133 ksps SAR core plus its programmable window comparator makes it ideal for autonomous 4-channel system monitoring where the host MCU must be freed from constant ADC polling. With a 2.048 V internal reference giving 0.5 mV/LSB at 12 bits, supply rails and analog sensor outputs can be supervised at sub-millivolt precision. The MAX1363 asserts the ALERT pin when any channel crosses user-configured upper or lower thresholds. Typical implementation places it on a 3.3 V supervisor rail with 0.1 µF bypass caps and a 2 kΩ SMBus pullup. Design trade-off: SMBus reads take ~10 µs per channel, so time-critical loops should rely on the threshold comparator rather than continuous polling.
推薦
Battery-Powered Supervisory Boards
The MAX1363MEUB+T's 0.5 mA typical operating current and 3.0 V to 3.6 V single supply make it well suited to battery-powered boards where every milliamp of standby current matters. Its programmable monitor mode lets a host MCU sleep while the MAX1363 watches voltage and temperature channels on the SMBus, waking the MCU only on a threshold interrupt. The 2.048 V internal reference is suitable for Li-ion cell stacks (3.0 V to 4.2 V per cell) with an external resistor divider. Trade-off: at full 133 ksps and 3.6 V the part draws roughly 2 mA, so design for duty-cycled monitor mode in deeply battery-constrained products.
推薦
Digital Panel Meters and Instrumentation
Front-panel digital meters need a 12-bit ADC with a stable internal reference, which is exactly what the MAX1363MEUB+T provides via its 2.048 V factory-trimmed reference and 12-bit SAR core. One µMAX-10 ADC can scan four display channels - voltage, current, temperature, and a user input - through a SMBus-controlled rotary switch. The 0.5 mV/LSB resolution at 2.048 V is comfortably readable for ±2 V inputs without an external amplifier. Trade-off: the 2-wire SMBus interface suits microcontroller-driven displays rather than purely analog readouts, so a host MCU is required.
推薦
Industrial Sensor Interface with SMBus Backplane
Industrial sensor nodes built on SMBus or I²C backplanes benefit from the MAX1363MEUB+T's 2-wire interface and address-select pins that allow up to four devices on the same bus. Each node can monitor four analog sensors (such as 4-20 mA loops, thermocouples with biasing, or RTDs) and flag out-of-range conditions over a shared ALERT line. The 133 ksps sample rate captures transient sensor events that slower ADCs would miss. Trade-off: the 10-pin µMAX PCB area is small but does not include an exposed thermal pad, so high-ambient-temperature enclosures need explicit de-rating.
推薦
Automotive ECU Auxiliary Monitoring
While the MAX1363 is rated to the -40 °C to +85 °C industrial range rather than AEC-Q100, it is widely used in non-safety-critical ECU auxiliary monitoring where four slow analog inputs need threshold supervision (e.g., body-control modules, infotainment power rails, and interior lighting diagnostics). Its SMBus alert output can interrupt an MCU on a single undervoltage or overvoltage event without polling overhead. Designers should derate the analog supply to 3.3 V ±5% to survive automotive transients when paired with external TVS protection. Trade-off: an AEC-Q100-qualified part is required for safety-critical 12-bit monitoring under the hood.
推薦
Thermal and Power Rail Threshold Supervisor
The MAX1363MEUB+T is well matched to power-rail threshold supervision tasks where four rails (such as 1.2 V core, 1.8 V DDR, 3.3 V IO, and 5 V auxiliary) need undervoltage and overvoltage detection. Set the MAX1363's programmable window comparator with upper and lower SMBus-written thresholds for each rail, and the ALERT output fires when any rail drifts out of specification. The factory-trimmed 2.048 V reference eliminates drift in supervision thresholds over time. Trade-off: the input range is bounded by the 2.048 V reference, so high-voltage rails (12 V, 24 V) need an external resistor divider.
推薦
Compact Data Acquisition Front-End for Embedded Linux
Embedded Linux boards running on Raspberry Pi-class or BeagleBone-class SoCs typically lack native 12-bit ADCs, so a MAX1363MEUB+T on the I²C bus provides four 12-bit analog inputs through a kernel driver. Its 2.048 V reference is stable enough for hobbyist-grade home automation and weather stations without precision analog front ends. The 10-pin µMAX footprint fits a sub-$0.50 BOM add-on board. Trade-off: only four channels, and the 133 ksps rate is overkill for slow sensor sampling; the 10-bit MAX1361 shares the same footprint for lower-cost designs.
推薦
推薦產品摘要
工程參考資料，適用於 MAX1363MEUB+T — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAX1363MEUB+ | MAX1364MEUB+T | MAX1364MEUB+ | MAX1361MEUB+T | MAX1362MEUB+T |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 10-pin µMAX (uSOP) | 10-pin µMAX (uSOP) - same | 10-pin µMAX (uSOP) - same | 10-pin µMAX (uSOP) - same | 10-pin µMAX (uSOP) - same | 10-pin µMAX (uSOP) - same |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 10 bits | 10 bits |
| Internal Reference | 2.048 V | 2.048 V | 4.096 V | 4.096 V | 2.048 V | 4.096 V |
| Interface | SMBus/I²C up to 400 kHz | SMBus/I²C up to 400 kHz | SMBus/I²C up to 400 kHz | SMBus/I²C up to 400 kHz | SMBus/I²C (per datasheet family) | SMBus/I²C (per datasheet family) |
| Packaging Form | Tape & Reel | Tube | Tape & Reel | Tube | Tape & Reel | Tape & Reel |
主要差異化特點
- 2.048 V internal reference gives 0.5 mV/LSB at 12 bits (對比MAX1364MEUB+T)
- True pin-compatible upgrade path to 10-bit families (對比MAX1361MEUB+T / MAX1362MEUB+T)
- Programmable window comparator with alert output (對比Generic 12-bit SAR ADC without alert pin)
設計說明
Estimated: The MAX1363MEUB+T draws roughly 0.5 mA from a 3.3 V analog supply during continuous conversion. Place a 0.1 µF X7R ceramic bypass capacitor within 5 mm of the supply pin and a 10 µF bulk capacitor at the board entry. For SMBus pull-ups, choose 2 kΩ to 5 kΩ depending on bus length; the MAX1363 supports the standard I²C 400 kHz mode.
Use shielded twisted pairs or short PCB traces from the analog inputs to the AIN pins, and route these traces away from switching nodes. A 100 Ω series resistor with a 1 nF to 10 nF RC filter on each input helps block RF interference; the SMBus alert is internally debounced, but the analog comparators may trigger on RF if filtering is omitted.
Do not exceed the analog input voltage range relative to ground; the 2.048 V internal reference on the MAX1363 means inputs must be scaled to stay within 0 V to VREF (after the divider). For higher-voltage inputs (such as 12 V rails), select the MAX1364MEUB+T (4.096 V reference) or add a resistor divider. Also note that the SMBus address-select pins influence multiple bits - consult the MAX1363/MAX1364 datasheet for the correct address pinning when more than one part is placed on the same bus.
Estimated: Keep the analog and digital sections of the PCB physically separated. Route the analog supply trace directly to the MAX1363MEUB+T's AVDD pin with a ferrite bead from the system 3.3 V, and place the bypass cap on the AVDD side of the bead to reduce digital switching noise coupling into the SAR reference. A solid ground plane under the part further reduces analog-input noise pickup.
合規資訊
RoHS, REACH, lead-free, halogen-free, and conflict-minerals status are not explicitly listed in the verified web data for the MAX1363MEUB+T. XAIPART recommends checking the Analog Devices material declaration sheet before RoHS-mandated design-in. The part is rated to -40 °C to +85 °C industrial extended range, not AEC-Q100 automotive.
