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Analog Devices Inc./Maxim Integrated MAX4731EBL+T
- Part No.:
- MAX4731EBL+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 9-WFBGA, WLBGA
- Datasheet:
-
MAX4731EBL+T.pdf
- Description:
- IC SWITCH SPST-NO X 2 25OHM 9WLP
- Quantity:
- Payment:
- Shipping:
Inventory:4,668
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Product details
Overview
The MAX4731EBL+T from Maxim Integrated is a dual, normally open (NO), single-pole/single-throw (SPST) analog switch IC operating from a single +2V to +11V supply. It delivers 50Ω max on-resistance at +3V, 0.1nA max leakage current at +25°C, and rail-to-rail signal handling - ideal for low-power audio routing and battery-powered data-acquisition systems.
For engineers reviewing the MAX4731EBL+T datasheet, MAX4731EBL+T pinout, MAX4731EBL+T application, or MAX4731EBL+T equivalent, this device's UCSP-9 package, dual NO topology, guaranteed RON matching (≤3.5Ω at +3V), and −108dB crosstalk at 1MHz are critical selection criteria in space-constrained, low-leakage signal-path designs.
Technical Context
The MAX4731EBL+T implements two independent CMOS SPST switches with TTL/CMOS-compatible digital inputs and bidirectional analog paths. Its architecture supports rail-to-rail analog signals from GND to V+, with on-resistance flatness ≤9Ω over the full signal range at +3V.
It features break-before-make timing only in the MAX4733 variant - not applicable here - and relies on internal protection diodes for overvoltage tolerance up to V+ + 0.3V. Logic thresholds scale with V+, requiring rail-to-rail input drive across all supply voltages from +2V to +11V.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Supply Voltage Range | +2.0V to +11V - enables direct integration into 3.3V, 5V, and higher-voltage portable systems without level-shifting. |
| On-Resistance (RON) | 50Ω max at +3V - ensures minimal signal attenuation and distortion in precision analog switching paths. |
| RON Matching | 3.5Ω max between channels at +3V - critical for matched gain/phase in differential or dual-channel signal routing. |
| Leakage Current | ±0.1nA max at +25°C - preserves signal integrity in high-impedance sensor interfaces and battery-monitoring circuits. |
| Crosstalk | −108dB at 1MHz - prevents audible or measurable coupling between switched audio/video channels. |
| Off-Isolation | −72dB at 1MHz - maintains channel separation in multiplexed communication or measurement front-ends. |
| Turn-On/Off Time | 170ns / 70ns max at +3V - supports fast-switching applications such as automatic test equipment and dynamic signal reconfiguration. |
Pinout & Package
The MAX4731EBL+T is housed in a 1.52mm × 1.52mm, 9-bump UCSP (Ultra-Chip-Scale Package) with bottom-side bumps. This wafer-level package minimizes PCB footprint and thermal resistance while enabling fine-pitch routing on dense layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| A1 | NO1 | Normally open analog terminal of Switch 1 - connects to COM1 only when IN1 = logic high. |
| A2 | COM1 | Common analog node for Switch 1 - serves as bidirectional I/O path for NO1. |
| A3 | GND | Digital ground reference - must be connected to system ground plane for stable logic and analog performance. |
| B1 | IN1 | Digital control input for Switch 1 - TTL/CMOS-compatible; requires rail-to-rail swing relative to V+. |
| B3 | IN2 | Digital control input for Switch 2 - independent of IN1; enables asynchronous channel control. |
| C1 | V+ | Positive supply input - bypass with ≥0.1µF capacitor near the package for stability at high V+ (≥8V). |
| C2 | COM2 | Common analog node for Switch 2 - bidirectional path shared with NO2. |
| C3 | NO2 | Normally open analog terminal of Switch 2 - connects to COM2 only when IN2 = logic high. |
Key Features
| Feature | Design Value |
|---|---|
| UCSP-9 footprint | 1.52mm × 1.52mm area - reduces PCB real estate by >70% vs. 8-pin µMAX, enabling ultra-compact wearable and IoT designs. |
| Rail-to-rail analog operation | Supports signals from GND to V+ - eliminates need for external level-shifting in single-supply systems like handheld medical devices. |
| Low quiescent power | 0.5nW typical - extends battery life in always-on sensor nodes and remote monitoring units. |
| TTL/CMOS logic compatibility | VIH = 2.0V min, VIL = 0.8V max at +5V - allows direct interfacing with microcontrollers and FPGAs without external buffers. |
| Guaranteed RON flatness | 9Ω max over full signal range at +3V - ensures consistent gain and linearity across audio and instrumentation signal amplitudes. |
Applications
| Audio Signal Routing | Portable Data Acquisition |
|---|---|
Use Scenario: Selecting between multiple microphone inputs or headphone outputs in a smartphone or wireless earbud. IC Role / Device Role / Timing Role: Dual NO analog switch routing bidirectional audio paths with minimal THD and crosstalk. Use Value: −108dB crosstalk and 50Ω RON preserve stereo separation and signal fidelity without external amplification. | Use Scenario: Multiplexing sensor outputs (e.g., thermistor, accelerometer) into a low-power ADC in a battery-operated environmental monitor. IC Role / Device Role / Timing Role: Low-leakage analog switch isolating high-impedance sensor nodes during inactive periods. Use Value: ±0.1nA leakage at +25°C prevents DC offset errors and enables >10-year battery life in sleep-mode operation. |
| Medical Wearable Front-End | Industrial Sensor Interface Module |
Use Scenario: Configuring ECG electrode connections (RA/LA/LL) in a compact patch-style monitor with dynamic lead selection. IC Role / Device Role / Timing Role: Precision analog switch enabling programmable electrode routing with rail-to-rail signal support. Use Value: 3.5Ω RON matching ensures balanced differential pair performance and common-mode rejection stability. | Use Scenario: Isolating 4–20mA loop sensors or RTD bridges from shared signal conditioning circuitry in modular PLC I/O cards. IC Role / Device Role / Timing Role: Low-drift, low-leakage switch protecting sensitive front-end amplifiers during channel calibration or fault conditions. Use Value: Guaranteed 50Ω RON at +3V and −72dB off-isolation minimize measurement uncertainty and cross-channel interference. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual SPST analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4731EUA+ | 8-pin µMAX package (3.0mm × 3.0mm); same electrical specs; exposed pad absent | Less board-area efficient; better thermal dissipation at high current; requires larger layout clearance | Select for prototyping or where manual soldering/rework is needed; avoid in ultra-dense portable designs. |
| ADG702BRMZ-REEL7 | Single +1.8V to +5.5V supply; 4Ω RON at +3V; 10-pin MSOP; no UCSP option | Lower RON but narrower voltage range; unsuitable for +8V–+11V systems or space-constrained UCSP layouts | Choose only if supply is strictly ≤5.5V and sub-10Ω RON is mandatory; verify logic threshold compatibility at low V+. |
Compared with MAX4731EUA+ and ADG702BRMZ-REEL7, the MAX4731EBL+T uniquely combines UCSP-9 miniaturization, +2V–+11V operation, and dual NO topology - making it the sole option for compact, wide-supply, battery-powered signal routing where board area and voltage flexibility are non-negotiable.
Availability
MAX4731EBL+T is available at Aetrix Electronics and suitable for battery-powered systems, audio/video-signal routing, and low-voltage data-acquisition systems requiring stable component supply across extended production lifecycles.
Supply support for MAX4731EBL+T includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power-management ICs for industrial, communications, and consumer applications.
The MAX4731EBL+T belongs to Maxim's precision analog switch product line, engineered for ultra-low leakage, rail-to-rail operation, and miniature packaging in portable and space-constrained electronic systems.
FAQ
What is the maximum supply voltage rating for the MAX4731EBL+T?
The MAX4731EBL+T has an absolute maximum supply voltage (V+) of +12V referenced to GND, with recommended operational range up to +11V. Operation near +11V requires a minimum 0.1µF bypass capacitor placed close to the V+ pin to ensure stability and prevent oscillation or latch-up.
Does the MAX4731EBL+T support rail-to-rail analog signal switching?
Yes, the MAX4731EBL+T supports rail-to-rail analog signal switching from GND to V+. Its CMOS architecture allows bidirectional signal flow through NO1/COM1 and NO2/COM2 paths with minimal distortion, confirmed by RON flatness ≤9Ω over the full analog range at +3V.
What is the logic input compatibility of the MAX4731EBL+T?
The MAX4731EBL+T inputs are TTL/CMOS-compatible when powered from +5V, with VIH ≥ 2.0V and VIL ≤ 0.8V. At other supply voltages (e.g., +3.3V or +11V), inputs must be driven rail-to-rail - i.e., from GND to V+ - to guarantee reliable switching and minimize quiescent current.
How does the UCSP-9 package of the MAX4731EBL+T impact PCB layout?
The MAX4731EBL+T's 1.52mm × 1.52mm UCSP-9 package uses bottom-side solder bumps, requiring microvia or plated-through-hole routing beneath the die. It demands JEDEC J-STD-020-compliant reflow profiles and prohibits hand/wave soldering. Layout must include thermal relief for GND and V+ bumps and maintain ≥0.2mm soldermask-defined pad spacing.
Is the MAX4731EBL+T suitable for high-frequency signal routing?
Yes - the MAX4731EBL+T offers a 300MHz on-channel −3dB bandwidth and −108dB crosstalk at 1MHz, supporting audio, baseband, and low-speed digital signal routing. However, its 170ns turn-on time and 50Ω RON limit use in >10MHz RF or high-speed serial applications where insertion loss and group delay become critical.
MAX4731EBL+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Switch Circuit:
- SPST - NO
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 25Ohm
- Channel-to-Channel Matching (ΔRon):
- 200mOhm
- Voltage - Supply, Single (V+):
- 2V ~ 11V
- Voltage - Supply, Dual (V±):
- -
- Switch Time (Ton, Toff) (Max):
- 85ns, 45ns
- -3db Bandwidth:
- 300MHz
- Charge Injection:
- 7.5pC
- Channel Capacitance (CS(off), CD(off)):
- 20pF, 20pF
- Current - Leakage (IS(off)) (Max):
- 100pA
- Crosstalk:
- -108dB @ 1MHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 9-WLP
MAX4731EBL+T FAQ
1.How can I place an order for MAX4731EBL+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4731EBL+T on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX4731EBL+T reliable?
The price and inventory of MAX4731EBL+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4731EBL+T is usually 5 days.
3.What payment methods are accepted for MAX4731EBL+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4731EBL+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4731EBL+T?
MAX4731EBL+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4731EBL+T order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX4731EBL+T?
For technical support, including MAX4731EBL+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4731EBL+T requirements.
6.How does Aetrix verify that MAX4731EBL+T is sourced from the original manufacturer or authorized distributors?
All MAX4731EBL+T products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX4731EBL+T meets industry standards.
7.What is the process for return or replacement of MAX4731EBL+T?
All MAX4731EBL+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4731EBL+T, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX4731EBL+T part is unused and in its original packaging.
Return procedure for MAX4731EBL+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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