MPC509AU - ±15V 4:1 Differential Analog Mux | Texas Instruments
料号： MPC509AU ✗ 停产MPC509AU 概述
An analog multiplexer is a semiconductor switch that routes multiple analog signals to a shared input. A differential-input multiplexer connects paired signals while preserving common-mode relationships, making it useful for instrumentation, data acquisition, test systems, and signal-conditioning circuits. The MPC509AU operates in the broader hierarchy of analog multiplexer, analog switch, interface IC, and semiconductor.
Key verified features include an analog signal range of ±15 V, break-before-make switching, no channel interaction during overvoltage, and a typical standby power of 7.5 mW. The 1.5-kOhm on-resistance is suitable for moderate-impedance sensing paths, although cable charge injection, off-state leakage, switching time, and channel capacitance should be checked against the source and acquisition circuitry.
The MPC509A is a four-channel differential-input multiplexer, while the related MPC508A is an eight-channel single-ended multiplexer. The MPC509AU is identified by DigiKey as a two-circuit IC switch with 4:1 operation, 1.5 kOhm resistance, and a 16-SOIC package. The manufacturer product page describes the device as a 16-V, 4:1 differential, one-channel analog multiplexer.
Typical applications include multiplexed sensor acquisition, automated test equipment, instrumentation signal routing, and systems that require controlled selection of several differential sources. Because the analog inputs can exceed the supply voltage without damaging the signal path, the part is particularly relevant when input transients or offset conditions are possible.
Designers should protect control and supply pins from excessive voltage, maintain the documented supply and signal limits, and place the multiplexer where trace capacitance and leakage remain controlled. Input filtering and impedance matching should be evaluated together with the 1.5-kOhm on-resistance. This page combines verified manufacturer and distributor information with selection guidance and engineering design notes.
直接替换替代料： MPC509AU ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
该产品暂无直接替换替代料。
请求替代料MPC509AU 规格参数
| Product Type | CMOS analog multiplexer |
| Multiplexer Configuration | 4:1 differential, one-channel |
| Number of Circuits | 2 circuits |
| 电源电压 | 16 V |
| Analog Signal Range | ±15 V |
| On Resistance | 1.5 kOhm |
| Analog Overvoltage Protection | 70 Vpp |
| Switching Type | Break-before-make |
| Channel Interaction During Overvoltage | No channel interaction |
| Typical Standby Power | 7.5 mW |
| Architecture | CMOS |
| Input Configuration | 4-channel differential input |
| 封装 | 16-pin SOIC (DW) |
| 安装类型 | Surface mount |
MPC509AU 16-pin soic (dw) 引脚配置指南
MPC509AU（16-pin soic (dw) 封装）的引脚配置。 引脚编号、功能和连接图在制造商数据手册中定义。请参阅该手册以了解确切的封装尺寸和焊接指南。
暂无详细引脚数据： MPC509AU.
请参阅 数据手册 以查看完整引脚配置。
典型应用
MPC509AU 适用于 6 应用s: Differential Sensor Acquisition, Automated Test Equipment, Data Acquisition Signal Routing, Instrumentation Signal Conditioning, Industrial Control Signal Routing, Battery-Powered Measurement Systems.
Differential Sensor Acquisition
The MPC509AU fits multiplexed differential sensor acquisition when the system must route one of four signal pairs into a shared amplifier or converter. Its differential 4:1 architecture preserves the relationship between paired inputs, while the ±15-V analog signal range provides a defined operating envelope. The 70-Vpp overvoltage-protection feature can improve robustness when sensor inputs experience excursions above the supply rails. Because the verified on-resistance is 1.5 kOhm, the design should verify that the sensor and downstream input impedance do not create unacceptable attenuation or settling errors.
推荐
Automated Test Equipment
Use MPC509AU in automated test equipment to select among several differential sources without duplicating front-end signal conditioning. The one-channel 4:1 topology reduces routing hardware while break-before-make switching helps avoid simultaneous-channel conduction during transitions. The 16-V supply rating and ±15-V analog signal range suit moderate industrial and instrumentation levels. For accurate measurements, account for 1.5-kOhm on-resistance, source impedance, leakage, and the time allowed for the selected path to settle before evaluating the result.
推荐
Data Acquisition Signal Routing
MPC509AU is appropriate for multichannel data-acquisition systems that need to share one analog front end among four differential inputs. The differential switching arrangement can simplify common-mode handling compared with treating paired signals as unrelated single-ended sources. Its 70-Vpp overvoltage-protection rating is useful for protecting a shared measurement path, while no channel interaction during overvoltage supports signal-path isolation. The main design check is impedance: 1.5-kOhm on-resistance must be small relative to the selected source and acquisition impedances for the required accuracy and bandwidth.
推荐
Instrumentation Signal Conditioning
The MPC509AU can front-end instrumentation in which several differential inputs must be selected before amplification, filtering, or conversion. The ±15-V signal range provides compatibility with higher-level analog instrumentation, and the overvoltage-protection feature helps manage input transients that may exceed the supply rails. Because the device is a multiplexer rather than an instrumentation amplifier, it does not provide signal gain, filtering, or precision reference functions. Those functions should be placed downstream, with the mux impedance and switching transients included in the error budget.
推荐
Industrial Control Signal Routing
MPC509AU can route differential control or monitor signals in an industrial system where one controller input accepts several channel sources. The 16-V supply rating and ±15-V analog range provide a useful fit for conventional industrial signal levels, while break-before-make switching helps maintain defined transitions during source selection. Overvoltage protection may reduce the chance that one abnormal input damages or disrupts the shared path. Engineers should still verify isolation, surge energy, common-mode limits, and the complete control-system safety chain rather than relying on the mux alone.
推荐
Battery-Powered Measurement Systems
MPC509AU can be used in portable measurement systems to multiplex several low-energy sensor inputs while sharing one analog conversion chain. The typical standby power of 7.5 mW provides a verified starting point for power budgeting, although actual battery consumption depends on supply voltage, selected channel, and downstream circuitry. The 70-Vpp overvoltage-protection characteristic can add robustness against accidental input excursions, while the ±15-V signal range constrains the usable analog level. Low-power designs should verify leakage and quiescent current from the full datasheet before making battery-life claims.
推荐
推荐产品汇总
工程参考数据： MPC509AU ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 |
|---|---|
| Product Type | 4:1 differential CMOS analog multiplexer |
| Number of Differential Inputs | 4 channels |
| Supply Voltage | 16 V |
| Analog Signal Range | ±15 V |
| On Resistance | 1.5 kOhm |
| Overvoltage Protection | 70 Vpp |
| Switching | Break-before-make |
| Package | 16-pin SOIC (DW) |
| Brand | Texas Instruments |
| Typical Standby Power | 7.5 mW |
关键差异点
- Differential four-channel multiplexing （对比 MPC508A)
- Input overvoltage protection （对比 Unprotected generic mux)
- Defined switching behavior （对比 Non-break-before-make switching implementation)
- Moderate on-resistance （对比 Low-resistance precision mux)
设计说明
The verified 1.5-kOhm on-resistance makes the selected analog channel a real loading element. Estimate the voltage-divider error using the source resistance, the mux on-resistance, and the downstream input impedance, then confirm that the source can settle to the required accuracy within the switching interval. For high-impedance sensors, leakage and stray capacitance may be as important as DC resistance.
Route the switched analog nodes as short and compact as practical, especially the common output path. Keep control inputs and digital return currents away from sensitive analog traces to reduce charge injection and coupling. The verified 16-SOIC package and surface-mount construction support compact placement, but the final land pattern and pin assignments must be copied from the official package drawing rather than inferred from the distributor listing.
Do not confuse the 70-Vpp overvoltage-protection feature with permission to operate all pins or channels at 70 Vpp. The verified analog range is ±15 V and the supply rating is 16 V; control-pin and absolute-maximum limits still apply. Also verify that the downstream circuit tolerates the transient produced by break-before-make switching and that the selected channel is stable before sampling.
Use the verified 7.5-mW typical standby-power figure only as an initial estimate. Actual supply power depends on the supply voltage, control state, channel configuration, and downstream loading. For battery systems, obtain worst-case supply-current and leakage data from the manufacturer datasheet and measure the complete analog path, including the ADC or amplifier that remains powered while the mux is idle.
合规信息
The supplied verified data does not explicitly state RoHS, REACH, AEC-Q100, lead-free, halogen-free, or conflict-minerals status for MPC509AU. These fields remain unknown rather than inferred.
