MAX14802CCM+ - 16-Channel 48V High-Voltage SPST Switch | Analog Devices
Артикул: MAX14802CCM+ ✓ АктивенMAX14802CCM+ Обзор
An analog switch is an integrated semiconductor that routes signals between terminals under digital control. The MAX14802 belongs to the broader high-voltage switch IC hierarchy, where low charge injection, high off isolation, and controlled on-resistance are important for precision signal acquisition. Such devices sit between sensors, transducers, amplifiers, data converters, and external circuitry, allowing a controller to select and isolate measurement paths.
The MAX14802 uses HVCMOS process technology to implement 16 high-voltage, low-charge-injection SPST switches. Its specified on-resistance is 48 ohm, while its single logic supply operates from 2.7 V to 5.5 V. The low charge injection characteristic is especially valuable when switching sensors whose output must remain accurate after each selection event.
Each channel is represented by a bit in the internal 16-bit shift register. Serial data can therefore be shifted into the device while the retained switch states are controlled by the latch and enable logic. This architecture supports deterministic channel selection in systems that periodically scan transducers rather than requiring a separate control line for every channel.
The device is intended for ultrasonic imaging and printer applications, where many high-voltage transducer connections must be multiplexed. It can also serve precision test systems, medical instrumentation, and industrial measurement equipment when the signal amplitude, injection behavior, and isolation requirements match the device ratings.
Designers should verify the exact high-voltage operating limits, absolute maximum ratings, off leakage, switching time, and recommended output-drive conditions in the manufacturer datasheet before applying the device. PCB layout should provide a continuous ground reference, keep sensitive logic traces away from high-voltage switch nodes, and observe the 7 mm by 7 mm TQFP land-pattern requirements.
This page combines verified manufacturer and distributor information, packaging details, engineering guidance, and the limitations of the available substitute data. It distinguishes a documented family candidate from fully confirmed drop-in replacements so procurement and design decisions are based on traceable evidence.
Аналоги без доработки для MAX14802CCM+ — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с MAX14802CCM+ (тот же форм-фактор и посадочное место) — отличается по Package, State Retention.
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Открыть даташит →MAX14802CCM+ Максимальные параметры и электрические характеристики
| Number of Switch Channels | 16 channels |
| Switch Configuration | 16 independent SPST switches |
| On-Resistance | 48 ohm |
| Logic Supply Voltage Range | 2.7 V to 5.5 V |
| Process Technology | HVCMOS |
| Internal Control Register | 16-bit shift register |
| State Retention | Programmable latch with enable |
| Digital Control Interface | Serial data clocking and latch enable |
| Корпус | 48-pin TQFP |
| Package Body Size | 7 mm x 7 mm |
| Тип монтажа | Surface mount |
| Primary Application | Ultrasonic imaging and printer signal switching |
Руководство по цоколевке MAX14802CCM+ в корпусе 7 mm x 7 mm
Цоколевка для MAX14802CCM+ (корпус 7 mm x 7 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 MAX14802CCM+.
Обратитесь к даташиту для полной конфигурации выводов.
Типичное применение
MAX14802CCM+ подходит для 6 применениеs: Ultrasonic Imaging Transducer Multiplexing, Piezoelectric Printer Channel Selection, High-Voltage Test Signal Routing, Precision Sensor Acquisition Multiplexer, Medical Instrumentation Signal Isolation, Industrial Transducer Interface Switching.
Ultrasonic Imaging Transducer Multiplexing
The MAX14802CCM+ fits ultrasonic imaging systems that must select among multiple high-voltage transducer connections. Its 16 SPST channels can represent 16 switching states, and the 48 ohm on-resistance provides a defined signal-path impedance when the selected channel is closed. Commands are loaded through the internal 16-bit shift register and retained by a programmable latch, reducing the control interface required for sequential probe selection. The low charge injection characteristic also helps preserve small signals after switching. Before deployment, engineers must confirm the required probe excitation voltage, signal bandwidth, leakage, and switching timing against the manufacturer electrical tables.
Рекомендуется
Piezoelectric Printer Channel Selection
The MAX14802CCM+ is suitable for piezoelectric printer electronics that route excitation and return signals among multiple actuators. Sixteen SPST switches provide compact channel selection, while the 48 ohm on-resistance and low charge injection support cleaner transitions in sensitive analog paths. The serial shift-register architecture allows channel commands to be loaded efficiently during a print cycle, and the programmable latch retains the selected state. The key trade-off is that the switch must be checked against the actuator drive amplitude, leakage, timing, and ground-return requirements, because those exact ratings are not present in the supplied distributor snippets.
Рекомендуется
High-Voltage Test Signal Routing
The MAX14802CCM+ can route test signals among multiple fixture or DUT connections when the required voltage falls within the device's verified high-voltage limits. Its 16 SPST channels support broad signal selection, and the 48 ohm on-resistance makes the closed-channel impedance explicit for impedance-sensitive fixture design. Serial control reduces the number of direct logic lines, while the latch provides stable switch states during measurement. Because the supplied data does not specify bandwidth, off isolation, leakage, or maximum switch-node voltage, laboratory engineers should validate those parameters from the official datasheet before connecting expensive fixtures.
Рекомендуется
Precision Sensor Acquisition Multiplexer
The MAX14802CCM+ is appropriate for multiplexed sensor acquisition when low charge injection and a defined 48 ohm on-resistance are important. The 16 independent SPST paths can isolate selected sensor lines before amplification or digitization, and the shift-register interface makes periodic channel scanning practical. This is especially useful when many sensors are sampled sequentially rather than simultaneously. The design trade-off is that the high-voltage switch architecture must not be treated as an unlimited signal range; engineers must confirm maximum node voltage, leakage, settling behavior, and the effect of 48 ohm resistance on source impedance and acquisition accuracy.
Рекомендуется
Medical Instrumentation Signal Isolation
The MAX14802CCM+ may be used in medical instrumentation to isolate selected sensor or electrode paths when its voltage and leakage ratings satisfy the system requirements. Its 16 SPST channels provide flexible routing, the 48 ohm on-resistance defines the path impedance, and low charge injection helps avoid unwanted transients when changing measurement connections. The internal 16-bit shift register simplifies deterministic acquisition sequencing. Medical designs require additional verification: confirm the maximum switch-node voltage, dielectric isolation, off leakage, operating temperature, and applicable medical qualification from official documentation rather than assuming compliance from the product category.
Рекомендуется
Industrial Transducer Interface Switching
The MAX14802CCM+ fits industrial transducer systems that need to select among 16 signal paths using a compact digital interface. Its SPST topology supports isolation of unselected channels, while the 48 ohm on-resistance provides a known series impedance in the selected path. The HVCMOS implementation and low charge injection are useful when processing weak or transient-sensitive sensor outputs. Serial loading through the 16-bit shift register can simplify synchronization with a controller. Engineers should verify the industrial voltage range, switching delay, power behavior, and thermal environment from the manufacturer datasheet, especially for long-duration scanning systems.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MAX14802CCM+ — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MAX14803CCM+ |
|---|---|---|
| Package | TQFP-48, 7 mm x 7 mm | TQFP-48 |
| Brand | Analog Devices | Analog Devices |
| Number of Channels | 16 SPST channels | 16 channels |
| Control Architecture | 16-bit shift register with programmable latch and enable | Digital interface with internal register and latch |
| Primary Applications | Ultrasonic imaging and printer applications | Ultrasonic imaging and printer applications |
Ключевые отличия
- Documented 16-channel SPST switching architecture (против MAX14803CCM+)
- Explicit 48 ohm on-resistance specification (против MAX14803CCM+)
- Documented 2.7 V to 5.5 V logic supply (против MAX14803CCM+)
- HVCMOS process and low charge injection (против MAX14803CCM+)
Заметки по проектированию
Use the manufacturer TQFP-48 land pattern and place the switch close to the transducer or printer interface to minimize trace resistance and parasitic capacitance. Maintain a continuous low-impedance ground reference beneath and around the device where the recommended footprint permits. Route clock, data, latch, and enable traces away from high-voltage switch-node copper, and avoid long parallel runs between logic and analog paths to reduce capacitive coupling.
Account for the specified 48 ohm on-resistance when calculating source impedance, amplifier gain, sensor settling, and signal attenuation. The low charge injection characteristic helps reduce step errors after switching, but it does not remove settling time, bandwidth limits, or off-channel leakage. Validate the complete acquisition path with the worst-case sensor source resistance, cable capacitance, amplifier input capacitance, and required measurement accuracy.
Do not infer the maximum high-voltage rating, absolute maximum ratings, off leakage, switching time, or operating temperature from marketplace snippets. The verified data confirms 16 SPST channels, 48 ohm on-resistance, a 2.7 V to 5.5 V logic supply, and a 48-pin TQFP package, but leaves several electrical limits unstated. Review the official MAX14802/MAX14803/MAX14803A datasheet and perform a pin-by-pin comparison before using MAX14803CCM+ as a drop-in substitute.
Keep the logic supply within the specified 2.7 V to 5.5 V range and decouple it close to the device according to the manufacturer layout guidance. The high-voltage switch-node rating is distinct from the logic supply rating, and confusing the two can lead to immediate device damage. Confirm whether the selected architecture requires a bipolar or isolated high-voltage supply, then follow all sequencing, grounding, and discharge requirements stated in the datasheet.
Информация о соответствии
The supplied web data does not explicitly extract RoHS, REACH, lead-free, halogen-free, or conflict-minerals declarations. AEC-Q100 is recorded as not applicable because the product is not identified as an automotive-qualified device.
