MAX35103EHJ+ Reduced-Power ToF Converter | Analog Devices
Артикул: MAX35103EHJ+ ✗ Снят с производства| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $7.1092 | $7,11 |
| 10 | $7.1092 | $71,09 |
| 100 | $7.1092 | $710,92 |
| 500 | $7.1092 | $3.554,60 |
| 1.000 | $7.1092 | $7.109,20 |
MAX35103EHJ+ Обзор
A time-to-digital converter, or ToF converter, measures the elapsed time represented by an ultrasonic pulse by converting a timing event into a digital result. The MAX35103 integrates the pulse-generation, receive-signal conditioning, timing, clock, and nonvolatile-measurement functions required by a compact ultrasonic metering front end. This integration reduces external circuitry compared with a discrete timer and analog receive chain while preserving a path to low-cost, low-power meter designs.
According to the manufacturer datasheet, the MAX35103 consumes about half the average power of the MAX35101. The supplied sources do not provide a numeric average-current value, oscillator accuracy, ToF resolution, measurement range, flash capacity, temperature range, or absolute timing accuracy, so those values require confirmation in the datasheet or device evaluation before design release. The listed operating supply range is 2.3 V to 3.6 V.
The integrated real-time clock and flash support metering designs that need timekeeping and persistent measurement data alongside ultrasonic time-of-flight conversion. The 16 Hz maximum event-timing frequency is particularly relevant when the meter must update more frequently than the MAX35101. Firmware, calibration, echo detection, and time-of-digital compensation still determine achievable accuracy and must be evaluated with real transducers and meter mechanics.
Typical uses include ultrasonic heat meters, water meters, and gas meters. An Analog Devices evaluation kit installs the MAX35103EHJ+ and includes a USB-to-SPI interface plus graphical software for exercising device functionality. The supplied distributor records list the MAX35103EHJ+ in a 32-TQFP package and identify it as a CMOS-input, CMOS-output time-to-digital converter IC.
For PCB design, place decoupling and timing-critical paths according to the manufacturer layout guidance and keep the ultrasonic analog front end away from switching nodes and digital return-current paths. Validate transducer drive amplitude, receive gain, threshold timing, clock calibration, and flash endurance under the intended flow, temperature, and supply conditions. Do not infer production suitability from the general-purpose EV kit alone.
Аналоги без доработки для MAX35103EHJ+ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
Для этого товара нет аналогов без доработки.
Запросить аналогиMAX35103EHJ+ Характеристики
| Product Type | Reduced-power time-to-digital converter |
| Рабочее напряжение питания | 2.3 V to 3.6 V |
| Maximum ToF Event Timing Frequency | 16 Hz in event timing mode |
| Average Power | Approximately one-half of MAX35101 |
| Integrated Analog Front End | Amplifier and comparator |
| Integrated Real-Time Clock | Yes |
| Integrated Flash | Yes |
| Logic Input Type | CMOS input |
| Logic Output Type | CMOS output |
| Корпус | 32-pin TQFP, 5 mm × 5 mm |
| Тип монтажа | Surface mount |
| Target Markets | Ultrasonic heat, water, and gas meters |
| Evaluation Kit | MAX35103 EV kit with USB-to-SPI interface and GUI |
Руководство по цоколевке MAX35103EHJ+ в корпусе 32-pin tqfp, 5 mm × 5 mm
Цоколевка для MAX35103EHJ+ (корпус 32-pin tqfp, 5 mm × 5 mm). Нумерация выводов, функции и схемы подключения определены в техническом описании производителя. Обратитесь к нему для точного посадочного места и рекомендаций по пайке.
Нет подробных данных о распиновке для MAX35103EHJ+.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
MAX35103EHJ+ подходит для 6 применениеs: Ultrasonic Water Meters, Ultrasonic Heat Meters, Ultrasonic Gas Meters, Battery-Powered Metering, Ultrasonic Flow Measurement, Metering Front-End Evaluation.
Ultrasonic Water Meters
The MAX35103EHJ+ fits water-meter designs because it integrates an ultrasonic analog front end, time-to-digital conversion, a real-time clock, and flash in one 2.3 V to 3.6 V device. Its 16 Hz maximum event-timing frequency can support more frequent propagation measurements than the MAX35101, which tops out at 2 Hz in that mode. Use the integrated comparator and amplifier with a suitable ultrasonic transducer, then calibrate against flow and pipe conditions. The supplied sources do not state ToF resolution, minimum measurable flow, timing accuracy, or total measurement range, so production suitability requires those values from the full datasheet and transducer testing.
Ultrasonic Heat Meters
The MAX35103EHJ+ targets ultrasonic heat meters because its reduced-power architecture combines ToF conversion, analog receive circuitry, real-time clock, and flash. Analog Devices states that it consumes approximately half the MAX35101 average power, a useful benefit in battery-operated metering where every energy-saving increment affects service life. The 16 Hz maximum event-timing frequency may improve measurement cadence compared with the MAX35101's 2 Hz maximum. Actual battery-life improvement depends on operating mode, transducer drive energy, wake strategy, flash usage, and supply efficiency, none of which is quantified in the supplied data.
Ultrasonic Gas Meters
The MAX35103EHJ+ can serve as the timing and receive front end in an ultrasonic gas meter, one of the applications explicitly identified by Analog Devices. Its integrated amplifier and comparator reduce the need for separate receive conditioning, while the 16 Hz event-timing ceiling provides more measurement opportunities than the MAX35101 in the cited mode. Gas implementations must still account for acoustic travel time, gas composition, pressure, temperature, echoes, and calibration drift. Verify transducer drive amplitude and receiver sensitivity against the complete electrical specifications before committing the power budget or meter mechanics.
Battery-Powered Metering
The MAX35103EHJ+ is well matched to low-power metering platforms that periodically activate an ultrasonic measurement front end. Its approximately one-half average-power relationship to the MAX35101, together with integrated analog, timing, clock, and flash functions, can reduce the component and energy burden compared with a less integrated design. Energy savings must still be evaluated using the device's actual mode-specific current, which is not present in the supplied snippets. Include regulator quiescent current, transducer drive losses, flash writes, wake latency, and battery self-discharge in the complete system budget.
Ultrasonic Flow Measurement
The MAX35103EHJ+ provides the core conversion and receive functions for compact ultrasonic flow-measurement electronics. An ultrasonic transducer sends and receives acoustic signals through the measured fluid, and the integrated amplifier and comparator process the returning event before time-to-digital conversion. The 16 Hz maximum event-timing frequency gives designers a higher potential cadence than the MAX35101's 2 Hz maximum in event-timing mode. Practical accuracy depends on pipe geometry, fluid velocity, signal thresholds, echo selection, calibration, and timing compensation; these parameters remain application-specific and must not be inferred from the general product description.
Metering Front-End Evaluation
The MAX35103 evaluation kit provides a practical platform for developing and checking MAX35103-based meter electronics. Analog Devices states that the kit includes a MAX35103EHJ+, a required USB-to-SPI interface, and EV-kit software with a graphical interface for exercising the IC. This is useful for confirming register access, initial transducer behavior, timing waveforms, and measurement-chain stability before a compact production PCB is designed. It does not eliminate the need to replicate power integrity, acoustics, calibration, EMC, and environmental testing in the final mechanical enclosure and board implementation.
Справочные инженерные данные для MAX35103EHJ+ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар |
|---|---|
| Brand | Analog Devices |
| Package | 32-pin TQFP, 5 mm × 5 mm |
| Supply Voltage | 2.3 V to 3.6 V |
| Maximum Event Timing Frequency | 16 Hz in event timing mode |
| Average Power Relationship | Approximately one-half of MAX35101 |
| Integrated Analog Front End | Amplifier and comparator |
| Real-Time Clock | Integrated |
| Flash Memory | Integrated |
| Primary Applications | Ultrasonic heat, water, and gas meters |
Ключевые отличия
- Higher maximum event-timing frequency (против MAX35101)
- Lower stated average power (против MAX35101)
- Metering-focused integration (против Discrete ultrasonic timer and receive chain)
Заметки по проектированию
Use the manufacturer's pinout and reference layout before routing the ultrasonic receive chain. Keep the transducer-related analog path short, place bypass capacitors at their designated power pins, and isolate timing-sensitive traces from switching or high-current return paths. The supplied data confirms a 32-pin, 5 mm × 5 mm TQFP but does not provide the complete pin table, so pin-specific placement must use the official datasheet rather than inference.
Validate echo amplitude, comparator threshold behavior, and timing repeatability with the intended transducer and flow geometry. The MAX35103EHJ+ integrates the amplifier and comparator, but integration does not remove the acoustic and layout sensitivity of the receive signal. Characterize startup, zero-flow behavior, minimum flow, and worst-case supply or temperature conditions because the supplied sources do not state ToF resolution, minimum detectable signal, or absolute timing accuracy.
Budget the 2.3 V to 3.6 V operating rail against transducer drive demand, regulator loss, analog current, digital activity, and flash-write energy. The manufacturer states approximately half the MAX35101 average power, but it does not provide a numeric average-current figure in the supplied snippets. Compare sleep and active modes in the final firmware and account for startup transients; do not calculate battery life from the relative power statement alone.
Do not treat the MAX35103EHJ+ and MAX35101 as board-drop-in equivalents merely because the manufacturer describes the MAX35103 as similar. Their stated average-power and event-frequency differences show functional evolution, while the supplied material does not establish matching pins, registers, or firmware. Preserve MAX35103-specific calibration and timing constants, and use the EV kit only as a development aid rather than evidence that the production meter meets accuracy or compliance requirements.
Информация о соответствии
The supplied sources do not explicitly state MAX35103EHJ+ environmental or material-compliance claims. AEC-Q100 is recorded as not_applicable because no automotive grade is identified, not because qualification was proven. Confirm current compliance with Analog Devices before regulated use.
