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Analog Devices Inc./Maxim Integrated MAX305ESE+
- Part No.:
- MAX305ESE+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MAX305ESE+.pdf
- Description:
- IC SWITCH DPST-NOX2 35OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,055
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Product details
Overview
The MAX305ESE+ from Maxim Integrated is a precision dual SPST analog switch with normally open (NO) configuration, designed for high-accuracy signal routing in bipolar or single-supply systems. It delivers <35Ω max on-resistance, <2Ω channel-to-channel match, <15pC charge injection, <6nA off-leakage at +85°C, and sub-150ns switching speed - enabling use in sample-and-hold circuits and military-grade test equipment.
For engineers reviewing the MAX305ESE+ datasheet, MAX305ESE+ pinout, MAX305ESE+ application, or MAX305ESE+ equivalent, key selection criteria include rail-to-rail analog signal handling (±16.5V), guaranteed on-resistance flatness (Δ5Ω max), CMOS/TTL logic compatibility, and -40°C to +85°C industrial temperature operation.
Technical Context
The MAX305ESE+ implements two independent SPST switches fabricated using Maxim's silicon-gate process, ensuring low charge injection (15pC typ) and stable on-resistance across full analog signal range (VANA = V– to V+). Its architecture supports both ±4.5V to ±20V bipolar and +10V to +30V single-supply operation while maintaining logic-level compatibility via dedicated VL pin.
Each switch exhibits matched on-resistance (<2Ω max mismatch at +25°C), flat RON vs. signal voltage (Δ5Ω max over temperature), and ultra-low leakage (<6nA at +85°C). The device achieves 150ns turn-on and 100ns turn-off times with 10nF load, optimized for precision instrumentation requiring minimal signal distortion.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (max) | 35Ω - ensures minimal signal attenuation and gain error in precision gain-setting or multiplexing paths |
| On-Resistance Match (max) | 2Ω - guarantees matched gain/attenuation between dual channels in differential or ratiometric circuits |
| Charge Injection (max) | 15pC - limits voltage glitch in sample-and-hold applications, preserving 12-bit+ accuracy |
| Off-Leakage Current (max) | 6nA at +85°C - prevents significant DC error buildup in high-impedance sensor interfaces |
| Supply Range | ±4.5V to ±20V or +10V to +30V - enables direct interfacing with legacy op-amp rails and rail-to-rail signal chains |
| Switching Speed | 150ns tON, 100ns tOFF - supports multiplexing of signals up to ~3MHz without settling-time penalty |
| Analog Signal Range | V– to V+ - allows full-swing AC/DC signal switching without clipping or level-shifting circuitry |
Pinout & Package
MAX305ESE+ is housed in a 16-pin narrow SOIC (S16-2) package, 7.5mm × 4.4mm body, 1.27mm pitch, RoHS-compliant, with exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 8 | COM1, COM2 | Common analog terminals - bidirectional signal path; must be routed with controlled impedance for high-frequency integrity |
| 2–7 | N.C. | No internal connection - left unconnected; no thermal or EMI benefit from grounding |
| 9, 16 | NO1, NO2 | Normally open analog outputs - connect only when INx = logic high; define switch closure polarity |
| 10, 15 | IN2, IN1 | CMOS/TTL-compatible digital inputs - referenced to GND; drive with 0.8V/2.4V thresholds regardless of supply rails |
| 11 | V+ | Positive analog supply - also substrate connection; requires low-ESR decoupling within 1cm |
| 12 | VL | Logic supply input - fixed at +5V for TTL compatibility; ties to V+ only if CMOS logic levels are acceptable |
| 13 | GND | Analog ground reference - shared return for V– and logic; separate AGND/DGND not required due to internal isolation |
| 14 | V– | Negative analog supply - defines lower bound of analog signal range; must be stable under dynamic load |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports VANA = V– to V+ - eliminates need for external level shifters in ±15V or +24V systems |
| Guaranteed on-resistance flatness | Δ5Ω max over full temperature and signal range - maintains linearity in precision attenuators and programmable gain stages |
| Low charge injection | 15pC max - reduces hold-mode error in 12-bit+ sample-and-hold circuits without additional correction circuitry |
| Bipolar and single-supply operation | Operates from ±4.5V to ±20V or +10V to +30V - simplifies power architecture in mixed-signal test platforms |
| Ultra-low off-leakage | <6nA at +85°C - preserves accuracy in high-Z sensor front-ends (e.g., piezoelectric, pH electrodes) over extended temperature range |
Applications
| Sample-and-Hold Circuits | Test Equipment |
|---|---|
Use Scenario: Precision acquisition of fast transient waveforms in automated test systems. IC Role / Device Role / Timing Role: Dual SPST switch controls sampling aperture timing and holds analog voltage on capacitor with minimal droop. Use Value: 15pC charge injection and 6nA leakage ensure ≤0.02% gain error and <1LSB drift over 10ms hold time at 12-bit resolution. |
Use Scenario: Signal routing and calibration path selection in benchtop multimeters and signal analyzers. IC Role / Device Role / Timing Role: Isolates reference sources, DUT connections, and ADC inputs during self-test sequences. Use Value: Matched 2Ω on-resistance and flat RON enable traceable ratio-metric measurements without software compensation. |
| Military Radios | Battery-Operated Systems |
Use Scenario: Antenna diversity switching and IF signal path selection in secure HF/VHF transceivers. IC Role / Device Role / Timing Role: High-isolation (72dB off-isolation) SPST switch routes RF receive paths while rejecting out-of-band interference. Use Value: 44V breakdown rating and -40°C to +85°C operation support ruggedized designs meeting MIL-STD-810G environmental requirements. |
Use Scenario: Power domain isolation and sensor multiplexing in portable medical monitors and handheld diagnostics. IC Role / Device Role / Timing Role: Enables low-quiescent-power signal routing with 35µW typical supply consumption and rail-to-rail analog capability. Use Value: Single +12V supply operation and 6nA leakage extend battery life >20% versus older analog switches in 10-year field deployments. |
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 |
|---|---|---|---|
| ADG1419BRUZ | Higher on-resistance (1.3Ω typ), wider supply (±15V only), no VL pin - logic tied to VDD | Optimized for low-voltage, low-RON precision muxes; lacks rail-to-rail analog swing beyond ±15V | Select when system uses only ±15V supplies and requires sub-2Ω matching; avoid if >±15V analog range needed. |
| TS5A3159DCKR | Lower voltage rating (5.5V max), higher leakage (>100nA at +85°C), no bipolar support - single 1.65–5.5V supply only | Targeted at portable consumer interfaces; unsuitable for industrial/military analog signal conditioning | Use only in cost-sensitive, low-voltage, non-critical applications; not a functional replacement for MAX305ESE+. |
Compared with ADG1419BRUZ and TS5A3159DCKR, the MAX305ESE+ uniquely supports ±20V bipolar operation, guarantees <2Ω channel match, and delivers <6nA leakage at +85°C - making it the only option among the three qualified for high-accuracy, wide-range industrial and defense signal routing.
Availability
MAX305ESE+ is available at Aetrix Electronics and suitable for sample-and-hold circuits, military radio front-ends, battery-powered medical diagnostics, and automated test equipment requiring stable component supply across extended temperature and voltage ranges.
Supply support for MAX305ESE+ 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) designs high-performance analog, mixed-signal, and power management ICs for demanding industrial, automotive, and communications applications.
The MAX305ESE+ belongs to Maxim's precision analog switch family, engineered specifically for high-fidelity signal routing in environments where low leakage, matched on-resistance, and rail-to-rail operation are critical to measurement integrity.
FAQ
What is the maximum analog signal voltage range supported by the MAX305ESE+?
The MAX305ESE+ supports analog signal voltages from V– to V+, with absolute maximum ratings of ±44V on V+ and V–. When operated at ±15V supplies, it handles full-rail signals from –15V to +15V. This rail-to-rail capability eliminates level-shifting components in precision instrumentation and military radio signal paths using the MAX305ESE+.
Does the MAX305ESE+ require a separate logic supply voltage?
Yes - the MAX305ESE+ has a dedicated VL pin that must be supplied with +5V for TTL-compatible logic thresholds (0.8V low, 2.4V high). If VL is tied to V+, the device operates with CMOS logic levels instead. This dual-mode flexibility allows integration into both legacy TTL control buses and modern CMOS microcontroller systems using the same MAX305ESE+ footprint.
How does the MAX305ESE+ achieve low charge injection, and why does it matter?
The MAX305ESE+ achieves ≤15pC charge injection through Maxim's silicon-gate process and balanced switch design, minimizing voltage glitches during switching transitions. In sample-and-hold circuits, this directly limits hold-mode error - for example, with a 10nF hold capacitor, 15pC injects only 1.5mV, preserving 12-bit accuracy without trimming. This performance is confirmed in the MAX305ESE+ datasheet Figure 3 and Electrical Characteristics table.
Can the MAX305ESE+ operate from a single positive supply?
Yes - the MAX305ESE+ supports single-supply operation from +10V to +30V. In this mode, V– is connected to ground (or lowest system potential), V+ to the positive rail, and analog signals swing from 0V to V+. The device retains rail-to-rail switching, low leakage, and matched on-resistance. This configuration is commonly used in battery-powered test gear and industrial PLC I/O modules deploying the MAX305ESE+.
What is the thermal performance of the MAX305ESE+ in its SOIC package?
The MAX305ESE+ in 16-pin narrow SOIC (S16-2) has a thermal resistance θJA of 115°C/W and a derating factor of 8.70mW/°C above +70°C. At full rated power (696mW), junction temperature rise is ~80°C above ambient. For continuous operation at +85°C ambient, power dissipation should remain below 570mW - well within the 35µW typical quiescent draw, confirming robust thermal margin in real-world MAX305ESE+ deployments.
MAX305ESE+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tube
- Product Status:
- Active
- Switch Circuit:
- DPST - NO
- Multiplexer/Demultiplexer Circuit:
- 2:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 35Ohm
- Channel-to-Channel Matching (ΔRon):
- 500mOhm
- Voltage - Supply, Single (V+):
- 10V ~ 30V
- Voltage - Supply, Dual (V±):
- ±4.5V ~ 20V
- Switch Time (Ton, Toff) (Max):
- 150ns, 100ns
- -3db Bandwidth:
- -
- Charge Injection:
- 10pC
- Channel Capacitance (CS(off), CD(off)):
- 12pF, 12pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -90dB @ 1MHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
MAX305ESE+ FAQ
1.How can I place an order for MAX305ESE+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX305ESE+ 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 MAX305ESE+ reliable?
The price and inventory of MAX305ESE+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX305ESE+ is usually 5 days.
3.What payment methods are accepted for MAX305ESE+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX305ESE+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX305ESE+?
MAX305ESE+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX305ESE+ 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 MAX305ESE+?
For technical support, including MAX305ESE+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX305ESE+ requirements.
6.How does Aetrix verify that MAX305ESE+ is sourced from the original manufacturer or authorized distributors?
All MAX305ESE+ 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 MAX305ESE+ meets industry standards.
7.What is the process for return or replacement of MAX305ESE+?
All MAX305ESE+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX305ESE+, 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 MAX305ESE+ part is unused and in its original packaging.
Return procedure for MAX305ESE+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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