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Analog Devices Inc./Maxim Integrated MAX307EWI+
- Part No.:
- MAX307EWI+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX307EWI+.pdf
- Description:
- IC MUX DUAL 8:1 100OHM 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,322
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Product details
Overview
MAX307EWI+ from Maxim Integrated is a precision, differential 2-of-8 CMOS analog multiplexer designed for high-fidelity signal routing in demanding measurement and control systems. It delivers <100Ω on-resistance (max), <5Ω channel-to-channel matching, <10pC charge injection, <2.5nA NO off-leakage at +85°C, and operates from ±4.5V to ±20V or +5V to +30V supplies - enabling rail-to-rail analog signal handling in test equipment and military radios.
For engineers reviewing the MAX307EWI+ datasheet, MAX307EWI+ pinout, MAX307EWI+ application, or MAX307EWI+ equivalent, key selection criteria include guaranteed on-resistance flatness (≤7Ω), ESD protection >2000V, TTL/CMOS-compatible enable and address inputs, dual-supply flexibility, and verified plug-in upgrade compatibility with DG407 and DG507A.
Technical Context
The MAX307EWI+ implements a fully decoded CMOS switch matrix with independent A0–A2 address inputs and EN enable logic, supporting simultaneous selection of one of eight differential pairs (COMA/NO1A–NO8A and COMB/NO1B–NO8B). Its silicon-gate process ensures low charge injection (<10pC) and stable on-resistance across temperature and signal voltage range.
It supports break-before-make switching (tOPEN ≤ 40ns), fast transition times (tTRANS ≤ 400ns over full temp range), and maintains <20nA COM off-leakage at +85°C under bipolar ±15V operation - critical for sample-and-hold accuracy and low-drift instrumentation interfaces.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Signal Range | ±15V (dual supply); enables full rail-to-rail signal routing without clipping |
| On-Resistance (RON) | <100Ω max at +25°C; ensures minimal signal attenuation and gain error in precision gain stages |
| On-Resistance Match (ΔRON) | <5Ω max between channels; guarantees matched gain/attenuation in differential sensor front-ends |
| Charge Injection (Q) | <10pC; limits voltage glitch and settling time in sample-and-hold circuits |
| NO Off-Leakage (INO(OFF)) | <2.5nA at +85°C; preserves accuracy in high-impedance sensor nodes and battery-operated systems |
| Supply Range | ±4.5V to ±20V or +5V to +30V; supports industrial, military, and portable designs without level-shifting |
| ESD Protection | >2000V HBM; reduces need for external protection in ruggedized test and comms hardware |
Pinout & Package
MAX307EWI+ is housed in a 28-pin Wide SO (SOIC-W) package, RoHS-compliant, with 1.27mm pitch and exposed pad variant not specified. Pin functions are validated per Maxim's official pin description and truth tables.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| V+ | Positive supply rail input | Bias source for internal CMOS switches; must be ≥ V− + 9V for full analog range |
| V− | Negative supply rail input | Reference for bipolar operation; connects to GND in single-supply mode |
| GND | Logic and substrate reference | Provides return path for digital inputs and internal bias networks |
| EN | Active-high enable input | Disables all switches when low; TTL/CMOS compatible (0.8V/2.4V thresholds) |
| A0–A2 | Binary address inputs | Select one of eight differential channels (000–111); no A3 pin on MAX307 |
| COMA, COMB | Differential common outputs | Two independent bidirectional output paths for true differential signal routing |
| NO1A–NO8A, NO1B–NO8B | Channel inputs (bidirectional) | Eight matched differential input pairs; each pair routed to corresponding COMx |
| N.C. | No internal connection | Pins 2, 3, 13, 14 - must remain unconnected per datasheet |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed on-resistance match | <5Ω max ensures consistent gain/phase response across all 8 differential channels |
| Rail-to-rail signal handling | Supports analog signals from V− to V+ without clipping - essential for ±15V op-amp interfaces |
| Low charge injection (<10pC) | Minimizes hold-mode voltage step in precision sample-and-hold circuits |
| Plug-in upgrade for DG407/DG507A | Direct replacement with identical pinout and logic behavior - no PCB redesign required |
| TTL/CMOS-compatible inputs | Eliminates need for level translators when interfacing with microcontrollers or FPGAs |
Applications
| Test Equipment | Military Radios |
|---|---|
Use Scenario: Automated test systems routing multiple sensor inputs to a shared ADC or DMM. IC Role / Device Role / Timing Role: Differential analog multiplexer selecting one of eight isolated sensor channels to preserve CMRR and noise immunity. Use Value: <5Ω RON match minimizes channel-to-channel gain error; <2.5nA leakage prevents drift during long integration cycles. | Use Scenario: Secure voice/data transceivers requiring robust signal switching across RF front-end calibration paths. IC Role / Device Role / Timing Role: High-reliability analog switch managing antenna duplexing and calibration loopback signals. Use Value: >2000V ESD rating withstands field-handling stress; ±20V supply support accommodates wide-voltage RF bias rails. |
| Sample-and-Hold Circuits | Battery-Operated Systems |
Use Scenario: Precision data acquisition modules capturing fast transient waveforms with sub-LSB accuracy. IC Role / Device Role / Timing Role: Low-charge-injection multiplexer feeding the hold capacitor in a monolithic S/H IC. Use Value: <10pC charge injection limits hold-step error to <1mV on 1nF capacitors - enabling 16-bit effective resolution. | Use Scenario: Portable medical monitors routing ECG, SpO₂, and temperature sensors to a low-power MCU ADC. IC Role / Device Role / Timing Role: Ultra-low-leakage analog switch enabling multi-sensor sharing while preserving battery life. Use Value: <2.5nA NO off-leakage at +85°C prevents signal corruption in high-Z electrode interfaces; <1.25mW power suits coin-cell operation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX307EUI+ | TSSOP-28 package (4.4mm × 9.7mm); same electrical specs, lower thermal resistance | Better suited for space-constrained PCBs; requires different land pattern and reflow profile | Select for compact layouts where SO width exceeds board area budget |
| ADG407BRZ | 75Ω max RON, 25nA INO(OFF) at +85°C, no guaranteed RON match spec, 1500V ESD | Lower performance in leakage and matching; suitable for non-critical industrial I/O, not precision metrology | Choose only if cost sensitivity outweighs precision requirements and ESD robustness |
Compared with MAX307EWI+, MAX307EUI+ offers identical functionality in a smaller footprint but requires layout revision, while ADG407BRZ trades guaranteed matching and ultra-low leakage for lower cost - making it viable only in less demanding signal chains.
Availability
MAX307EWI+ is available at Aetrix Electronics and suitable for test equipment, military communications systems, sample-and-hold circuits, and battery-operated instrumentation requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX307EWI+ 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 U.S.-based semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, communications, and computing markets.
The MAX306/MAX307 product line was engineered for precision analog signal routing in environments demanding low distortion, minimal charge injection, and guaranteed parameter matching - targeting test & measurement, avionics, and secure comms.
FAQ
What is the operating temperature range for MAX307EWI+?
The MAX307EWI+ is rated for operation from –40°C to +85°C, as confirmed by its "E" grade suffix and ordering information table. This extended industrial temperature range ensures reliable performance in harsh environments such as vehicle-mounted radios, outdoor test gear, and industrial PLC I/O modules - unlike the commercial-grade "C" version limited to 0°C to +70°C.
Does MAX307EWI+ support single-supply operation?
Yes, MAX307EWI+ supports single-supply operation from +5V to +30V. In this configuration, V− must be connected to GND. The analog signal range becomes 0V to V+, e.g., 0V to +12V with a +12V supply. Performance parameters including on-resistance and leakage remain within datasheet limits, though transition time increases slightly versus dual-supply use.
Is MAX307EWI+ pin-compatible with DG407 or DG507A?
Yes, MAX307EWI+ is a documented plug-in upgrade for DG407 and DG507A, with identical pinout, logic interface levels, and functional behavior. No PCB changes are required - users retain existing layout, firmware, and bill-of-materials while gaining improved on-resistance matching, lower charge injection, and higher ESD tolerance.
What is the maximum analog signal voltage range supported by MAX307EWI+?
Under dual-supply operation, MAX307EWI+ supports an analog signal range of ±15V (i.e., –15V to +15V referenced to V− and V+), as specified in the Electrical Characteristics table. With ±20V supplies, the absolute maximum analog voltage remains within (V− – 2V) to (V+ + 2V) due to internal clamp diodes - limiting usable range to approximately ±18V.
How does charge injection affect system performance in MAX307EWI+ applications?
MAX307EWI+ guarantees charge injection <10pC, which directly determines hold-step error in sample-and-hold circuits: ΔV = Q / CHOLD. For example, with a 1nF hold capacitor, the worst-case step is <10mV - enabling accurate 12-bit acquisition. Low charge injection also reduces settling time and distortion in audio routing and precision DAC output switching.
MAX307EWI+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- -
- Multiplexer/Demultiplexer Circuit:
- 8:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1.5Ohm
- Voltage - Supply, Single (V+):
- 5V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 200ns, 150ns
- -3db Bandwidth:
- -
- Charge Injection:
- 2pC
- Channel Capacitance (CS(off), CD(off)):
- 8pF, 65pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -92dB @ 100kHz
- Operating Temperature:
- -40°C ~ 85°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 28-SOIC
MAX307EWI+ FAQ
1.How can I place an order for MAX307EWI+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX307EWI+ 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 MAX307EWI+ reliable?
The price and inventory of MAX307EWI+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX307EWI+ is usually 5 days.
3.What payment methods are accepted for MAX307EWI+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX307EWI+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX307EWI+?
MAX307EWI+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX307EWI+ 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 MAX307EWI+?
For technical support, including MAX307EWI+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX307EWI+ requirements.
6.How does Aetrix verify that MAX307EWI+ is sourced from the original manufacturer or authorized distributors?
All MAX307EWI+ 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 MAX307EWI+ meets industry standards.
7.What is the process for return or replacement of MAX307EWI+?
All MAX307EWI+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX307EWI+, 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 MAX307EWI+ part is unused and in its original packaging.
Return procedure for MAX307EWI+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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