MAX4852ETE+T - Dual SPDT Over-Rail Switch | Analog Devices
MPN: MAX4852ETE+T ✓ فعالMAX4852ETE+T نمای کلی
An analog switch is a semiconductor device that routes electrical signals between circuit nodes under digital control. The MAX4852 belongs to the analog-switch and multiplexer hierarchy, where SPDT means single-pole, double-throw switching. Two independently controlled switches can select one of two signal paths for each pole. Over-rail handling distinguishes this device from conventional rail-to-rail switches by allowing a signal to pass through without distortion when it exceeds the positive supply voltage.
The MAX4852 provides low 4.5 ohm on-resistance, 1 microamp low supply current, and a 0.1 ns differential skew specification. Its 135 MHz -3 dB bandwidth supports high-frequency signal routing. The device is also identified as compliant with USB 2.0 full-speed and USB 1.1 signal-switching requirements, making it suitable for low-speed USB signal paths and other data-selection circuits.
Internally, each SPDT switch uses CMOS-compatible control inputs and supports over-rail signal passage. According to the Analog Devices product information, the MAX4852 uses the pass-through arrangement in which a signal up to 5.5 V can pass through even when the positive supply rail is exceeded. By contrast, the MAX4852H family places the switch input into a high-impedance state when the input exceeds the supply rail.
Typical uses include audio routing, USB signal selection, test and measurement systems, communication interfaces, and industrial control equipment. The two-switch configuration allows a signal source to be routed to one of two destinations or, using suitable wiring, to select between two inputs. This makes the MAX4852 useful where compact routing, low supply current, and signal handling beyond the supply rail are important.
Designers should verify control-logic levels, signal amplitude, bandwidth, and on-resistance against the application before finalizing the layout. Keep routed signal traces short, use a continuous ground reference, and place bypass capacitance near the supply pins. Account for the 4.5 ohm on-resistance when calculating insertion loss, especially when driving capacitive or low-impedance downstream loads.
This page combines manufacturer specifications, verified sourcing records, same-family drop-in options, application guidance, and design considerations to support faster component evaluation and PCB-level decision-making.
جایگزین‌های drop-in برای MAX4852ETE+T — همان پکیج، سازگار پین‌به‌پین. قطعات با پکیج متفاوت که نیاز به تغییر PCB دارند مستثنی هستند.
MAX4850ETE+T
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشدهبرای قیمت تماس بگیرید
مشاهده دیتاشیت ←MAX4852HETE+T
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MAX4850HETE+T
✅ جایگزین مستقیم ⚠️ مشخصات تأییدنشده📋 جایگزین مرجع (خارج از کاتالوگ)
MAX4852ETE+T حداکثر مقادیر مجاز و مشخصات الکتریکی
| Number of Switches | 2 circuits |
| Switch Configuration | Dual SPDT, 2:1 |
| On-Resistance | 4.5 ohm |
| Detailed On-Resistance Values | 3.5 ohm and 7 ohm |
| Signal Handling | Over-rail, pass-through operation |
| Maximum Over-Rail Signal | 5.5 V |
| Supply Voltage Range | +2 V to +5.5 V |
| Logic Compatibility | 1.8 V logic compatible |
| جریان تغذیه | 1 microamp |
| Differential Skew | 0.1 ns |
| Signal Bandwidth | 135 MHz at -3 dB |
| USB Compatibility | USB 2.0 full-speed and USB 1.1 signal switching compliant |
| بسته‌بندی | 16-pin TQFN, 3 mm x 3 mm |
| نوع نصب | Surface mount |
| وضعیت RoHS | RoHS compliant |
| Lead-Free Status | Lead free |
| Production Status | Production |
راهنمای پیکربندی پین MAX4852ETE+T 16-pin tqfn, 3 mm x 3 mm
پیکربندی پین برای MAX4852ETE+T (پکیج 16-pin tqfn, 3 mm x 3 mm). شماره‌گذاری پایه‌ها، عملکردها و نمودارهای اتصال در دیتاشیت سازنده تعریف شده است. برای footprint دقیق و دستورالعمل‌های لحیم‌کاری به آن مراجعه کنید.
داده پین‌آوت تفصیلی موجود نیست برای MAX4852ETE+T.
به دیتاشیت برای پیکربندی کامل پین‌ها.
کاربردهای معمول
MAX4852ETE+T مناسب است برای 6 کاربردs: USB Signal Routing, Audio Signal Selection, Industrial Test Equipment, Communication Interface Routing, Battery-Powered Sensor Interface, Data Acquisition Multiplexer.
USB Signal Routing
The MAX4852ETE+T is suitable for routing USB 2.0 full-speed and USB 1.1-compatible signals because Analog Devices identifies the switch as compliant with those signal-switching requirements. Its 4.5 ohm on-resistance and 135 MHz -3 dB bandwidth provide useful headroom for low-speed data paths in compact USB hubs, peripheral selectors, and test fixtures. Two independently controlled SPDT poles can route paired signals or manage separate control and data paths. Keep trace lengths short, provide a continuous reference plane, and terminate the USB interface according to its applicable system specification.
Audio Signal Selection
The MAX4852ETE+T can switch low-level audio signals between two paths while maintaining a stated 4.5 ohm on-resistance and low 1 microamp supply current. The dual SPDT configuration is useful in audio source selectors, microphone-routing networks, and compact signal-path equalizers. Its over-rail pass-through behavior can simplify protection around externally accessible lines, although the application must ensure that signal amplitude and source impedance remain within the device electrical limits. Verify distortion, insertion loss, and capacitive loading during prototype testing.
Industrial Test Equipment
The MAX4852ETE+T is appropriate for signal routing inside automated test and measurement systems where two SPDT switches can select between stimulus, measurement, or isolation paths. The 135 MHz -3 dB bandwidth is sufficient for many low-to-moderate-frequency measurement signals, while the compact 3 mm by 3 mm TQFN footprint supports dense instrumentation. Over-rail handling can protect routing nodes during transient test conditions, but the system designer must still define acceptable voltage, duration, and current limits. Use short traces and verify switch capacitance before adding long cable runs.
Communication Interface Routing
The dual SPDT topology of the MAX4852ETE+T supports selectable communication paths in gateways, interface-conditioning modules, and embedded control equipment. The 1.8 V-compatible control interface allows direct integration with modern low-voltage digital controllers, while 1 microamp supply current is useful in power-sensitive designs. Over-rail pass-through helps maintain signal continuity when an input temporarily exceeds the positive supply. Confirmation is still required for bandwidth, logic thresholds, channel capacitance, and the exact behavior required during power-up or fault recovery.
Battery-Powered Sensor Interface
The MAX4852ETE+T fits compact, low-power sensor interfaces where a controller must select between a sensor, a calibration source, or a test path. Its 1 microamp supply current limits the static burden introduced by the switch, and the 3 mm by 3 mm TQFN package preserves board area in portable equipment. The 4.5 ohm on-resistance must be included when budgeting insertion loss into high-impedance sensor chains. For battery designs, also examine off-state leakage, signal-level limits, and the power consumption of the external control circuitry.
Data Acquisition Multiplexer
The MAX4852ETE+T can implement a compact two-channel selection stage in a data-acquisition front end. Each SPDT pole may route a source or reference signal to a following amplifier, ADC, or comparator, while the 135 MHz -3 dB bandwidth provides broad signal-path capability. On-resistance contributes attenuation and can interact with switch capacitance when driving high-impedance nodes. Use a continuous ground plane, minimize loop area, and place any required bypass capacitor directly beside the supply connection. Validate channel timing against the control signals and downstream acquisition bandwidth.
داده‌های مرجع مهندسی برای MAX4852ETE+T — مقایسه، راهنمای طراحی و اطلاعات انطباق.
راهنمای انتخاب
مقایسه با جایگزین‌ها
| پارامتر | این محصول | MAX4850ETE+T | MAX4852HETE+T | MAX4850HETE+T |
|---|---|---|---|---|
| Package | 16-TQFN (3x3) | 16-TQFN (3x3) | 16-TQFN (3x3) | 16-TQFN (3x3) |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Switch Configuration | Dual SPDT, 2:1 | Dual SPDT, 2:1 | Dual SPDT, 2:1 | Dual SPDT, 2:1 |
| Over-Rail Behavior | Pass-through | Pass-through | High impedance when input exceeds supply | High impedance when input exceeds supply |
| Supply Current | 1 microamp | 5 microamp | 10 microamp | 10 microamp |
تفاوت‌های کلیدی
- Lower characterized supply current within the same over-rail switch family (در مقابلMAX4850ETE+T)
- Lower characterized supply current than the MAX4852H option (در مقابلMAX4852HETE+T)
- Pass-through operation preserves signal continuity beyond the positive supply (در مقابلMAX4850HETE+T)
یادداشت‌های طراحی
Treat the switch as a resistance-capacitance network rather than an ideal closed contact. The specified 4.5 ohm on-resistance can create attenuation when driving a high-impedance or capacitive load, and the 135 MHz -3 dB bandwidth should not be interpreted as a guaranteed flat response for every load. Keep routing short, use a continuous ground reference, and measure insertion loss with the actual source impedance, cable, and downstream termination.
Place the required supply bypass capacitor immediately beside the device supply and ground connections. Keep the current loop through the capacitor and package as small as practical because trace inductance can degrade bypass effectiveness and increase switching-related noise. Confirm that the selected capacitor, voltage rating, and external supply arrangement meet the transient and stability requirements stated in the manufacturer data sheet.
Route each SPDT path to avoid stubs, test pads, and unnecessary vias because parasitic capacitance can reduce usable bandwidth. For paired signals, maintain consistent geometry and return paths to minimize skew. The device has a 0.1 ns differential-skew specification, but PCB routing can still disturb timing, so preserve symmetry and avoid sharing return-current discontinuities with unrelated switching nodes.
Do not select MAX4852HETE+T solely because it shares the 16-TQFN footprint with MAX4852ETE+T. The MAX4852 uses pass-through behavior when the input exceeds the positive supply, whereas the H version becomes high impedance. That difference can materially alter fault response, downstream biasing, and system behavior. Approve a substitution only after reviewing the full pin description and electrical-characteristics tables.
اطلاعات انطباق
RoHS-compliant and lead-free status are identified for MAX4852ETE+T. No REACH, halogen-free, AEC-Q100, or conflict-minerals declaration was identified.
