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Analog Devices Inc./Maxim Integrated MAX4521CEE+T
- Part No.:
- MAX4521CEE+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
MAX4521CEE+T.pdf
- Description:
- IC SW SPST-NCX4 100OHM 16QSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,869
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Product details
Overview
MAX4521CEE+T from Maxim Integrated is a quad, low-voltage, normally closed (NC) SPST analog switch IC designed for precision signal routing in rail-to-rail analog paths. It features 100Ω max on-resistance (at ±5V), 4Ω max channel-to-channel RON matching, 12Ω max RON flatness, <1µW power consumption, and operates from +2V to +12V single supply or ±2V to ±6V dual supplies. It is used in battery-powered audio signal routing and data acquisition front-ends where leakage-critical switching is required.
For engineers reviewing the MAX4521CEE+T datasheet, MAX4521CEE+T pinout, MAX4521CEE+T application, or MAX4521CEE+T equivalent, key selection criteria include NC configuration, QSOP-16 package compatibility, sub-1nA COM off-leakage at +25°C, rail-to-rail signal handling up to ±4.5V, and TTL/CMOS logic thresholds validated at +5V supply.
Technical Context
The MAX4521CEE+T implements four independent CMOS transmission gates with complementary N- and P-channel MOSFETs driven by level-translated logic inputs. Its internal architecture ensures symmetrical conduction across the full analog range (V− to V+) without ground reference, enabling true bidirectional signal flow through COM/NC terminals.
Each switch exhibits matched on-resistance (ΔRON ≤ 4Ω) and flat on-resistance (RFLAT(ON) ≤ 12Ω) over ±4.5V signal swing under ±5V supplies, while maintaining <1nA COM off-leakage at +25°C and 10nA at +85°C - critical for high-impedance sensor multiplexing and precision instrumentation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| On-Resistance (RON) | 100Ω max at ±5V supplies - ensures minimal signal attenuation and gain error in 50Ω–10kΩ analog paths |
| RON Matching | ≤4Ω max between channels - enables precise ratio-metric measurements in multi-channel data acquisition |
| RON Flatness | ≤12Ω max over ±4.5V signal range - maintains consistent channel gain across full input voltage swing |
| COM Off-Leakage Current | 1nA max at +25°C - preserves accuracy in high-Z sensor interfaces and sample-hold circuits |
| Supply Range | +2V to +12V single or ±2V to ±6V dual - supports operation from Li-ion battery (3.0–4.2V) to industrial ±5V rails |
| Logic Thresholds | VIN_L ≤ 1.6V, VIN_H ≥ 1.6V - guarantees reliable TTL/CMOS compatibility with +5V microcontrollers and FPGAs |
| Turn-On/Off Time | 100ns / 40ns typical at ±4.5V - suitable for multiplexing up to 5MHz sampled signals with minimal settling distortion |
Pinout & Package
MAX4521CEE+T is housed in a 16-pin QSOP (E16-4) package measuring 4.9mm × 3.9mm × 1.45mm, with gull-wing leads on 0.635mm pitch and no exposed pad.
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| 1, 4, 9, 12 | NC1–NC4 | Normally closed analog terminals - connected to COM when IN = logic low; must be routed as signal path, not left floating |
| 2, 7, 10, 15 | COM1–COM4 | Common analog terminals - bidirectional signal interface; interchangeable with NC pins per datasheet note |
| 3, 6, 11, 14 | IN1–IN4 | Digital control inputs - active-low logic controls NC closure; 0.8V/2.4V thresholds ensure noise-immune switching |
| 5 | V− | Negative supply pin - connect to GND for single-supply operation; sets lower analog voltage limit when biased negatively |
| 8 | GND | Digital ground reference - separate from analog signal return; no direct connection to COM/NC paths |
| 13 | V+ | Positive supply pin - powers internal logic and analog switches; internally tied to substrate; must be decoupled |
| 16 | N.C. | No connection - unconnected die bond pad; must remain unconnected on PCB |
Key Features
| Feature | Design Value |
|---|---|
| Rail-to-rail analog signal handling | Supports signals from V− to V+ (e.g., ±4.5V with ±5V supplies), eliminating level-shifting requirements in bipolar systems |
| Low on-resistance flatness | 12Ω max variation across full signal range - minimizes harmonic distortion and amplitude nonlinearity in audio routing |
| Ultra-low off-leakage | 1nA COM off-leakage at +25°C - prevents DC error accumulation in integrators and high-gain sensor amplifiers |
| ESD robustness | >2kV HBM per Method 3015.7 - protects against handling damage during assembly of portable test equipment |
| Pin compatibility | Direct replacement for industry-standard DG211 - enables drop-in upgrade in legacy designs without layout change |
Applications
| Battery-Powered Data Loggers | Avionics Sensor Multiplexing |
|---|---|
|
Use Scenario: Selecting among multiple thermocouple or RTD inputs in a handheld environmental monitor powered by two AA cells. IC Role / Device Role / Timing Role: Quad NC switch routes analog sensor outputs to a shared ADC front-end; IN pins controlled by low-power MCU GPIOs. Use Value: 1nA off-leakage prevents offset drift in µV-level thermocouple measurements; 100Ω RON introduces <0.1% gain error in 100kΩ source impedance paths. |
Use Scenario: Routing discrete pressure and temperature transducer signals in a certified flight-control subsystem with strict EMI and reliability requirements. IC Role / Device Role / Timing Role: Isolates redundant sensor channels before conditioning; NC configuration ensures default-safety (signal path closed on power loss). Use Value: >2kV ESD rating meets DO-160 Section 22 Level 3 requirements; ±6V dual-supply operation supports aircraft 28V-derived analog rails. |
| Portable Audio Signal Switching | Automated Test Equipment (ATE) Channel Selection |
|
Use Scenario: Selecting between line-in, mic-in, and headphone-out paths in a compact USB-C audio interface. IC Role / Device Role / Timing Role: Four independent NC switches manage bidirectional analog paths; rail-to-rail capability preserves full dynamic range of 24-bit DAC/ADC. Use Value: 12Ω RON flatness ensures <0.02% THD+N up to 20kHz; QSOP-16 footprint enables dense layout in space-constrained enclosures. |
Use Scenario: Scanning 16 DUTs across four parallel measurement channels in a benchtop multimeter platform. IC Role / Device Role / Timing Role: Configured as four NC switches to connect calibration references or DUT signals to precision voltmeter inputs under microcontroller control. Use Value: 4Ω RON matching eliminates inter-channel gain mismatch; <1µW quiescent power reduces self-heating-induced drift during long-duration tests. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX4522CEE+T | Four normally open (NO) configuration vs. MAX4521CEE+T's NC; identical RON, leakage, and timing specs | Suitable where default-open safety state is required (e.g., disconnecting power rails on fault) | Select MAX4522CEE+T only if system requires open-circuit default behavior; pinout and footprint are identical. |
| ADG1411BRUZ | Higher RON (1.8Ω typ), wider supply (±15V), but higher leakage (20nA @ +85°C) and larger TSSOP-16 package | Better suited for high-voltage industrial I/O modules than portable low-leakage applications | Choose ADG1411BRUZ only when ±15V operation or lower RON is mandatory; not a drop-in replacement due to different pin mapping. |
Compared with MAX4522CEE+T, the MAX4521CEE+T provides fail-safe continuity on power loss - critical for sensor biasing integrity. Against ADG1411BRUZ, it offers superior leakage performance and smaller QSOP footprint at the cost of lower voltage rating, making it optimal for portable, low-power, high-precision analog routing.
Availability
MAX4521CEE+T is available at Aetrix Electronics and suitable for battery-operated equipment, data acquisition systems, and avionics signal routing requiring stable component supply and long-term manufacturability.
Supply support for MAX4521CEE+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 U.S.-based semiconductor company specializing in high-performance analog and mixed-signal ICs for industrial, communications, and consumer applications.
The MAX4521/MAX4522/MAX4523 family was designed specifically for low-voltage, low-leakage analog signal routing in portable and precision instrumentation systems - prioritizing rail-to-rail operation, tight RON matching, and ultra-low power consumption.
FAQ
What is the maximum allowable supply voltage for MAX4521CEE+T?
The absolute maximum V+ to V− differential is 13.0V. For single-supply use, V+ may range from +2V to +12V with V− tied to GND. Exceeding +12V on V+ or applying more than ±6V across V+/V− risks permanent damage, especially considering ±5% supply tolerances that could reach 13.2V on ±6V rails.
Does MAX4521CEE+T support rail-to-rail analog signals with a +3.3V single supply?
Yes. With V+ = +3.3V and V− = GND, the MAX4521CEE+T supports analog signals from 0V to +3.3V. At this supply, typical RON is 260Ω (max 500Ω), and turn-on time is 300ns - verified in the Single +3V Supply Electrical Characteristics table.
Can the COM and NC pins be used interchangeably on MAX4521CEE+T?
Yes. Per the Pin Description section, COM and NC pins are electrically identical and bidirectional. Either may serve as input or output; signal integrity is preserved regardless of direction - a key advantage for flexible PCB layout in analog routing applications.
What is the thermal performance of MAX4521CEE+T in QSOP package?
The QSOP package has a thermal resistance θJA of 9.52°C/W, with 762mW maximum continuous power dissipation at +70°C ambient. Derating is 9.52mW/°C above +70°C - meaning at +85°C ambient, max dissipation drops to ~620mW.
Is MAX4521CEE+T pin-compatible with DG211?
Yes. The datasheet explicitly states "Pin Compatible with Industry-Standard DG211/DG212/DG213" and confirms identical pin functions and ordering in the Pin Configurations section - enabling direct substitution in existing DG211-based designs without PCB modification.
MAX4521CEE+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SPST - NC
- Multiplexer/Demultiplexer Circuit:
- 1:1
- Number of Circuits:
- 4
- On-State Resistance (Max):
- 100Ohm
- Channel-to-Channel Matching (ΔRon):
- 1Ohm
- Voltage - Supply, Single (V+):
- 2V ~ 12V
- Voltage - Supply, Dual (V±):
- ±2V ~ 6V
- Switch Time (Ton, Toff) (Max):
- 80ns, 30ns
- -3db Bandwidth:
- -
- Charge Injection:
- 1pC
- Channel Capacitance (CS(off), CD(off)):
- 2pF, 2pF
- Current - Leakage (IS(off)) (Max):
- 1nA
- Crosstalk:
- -90dB @ 100kHz
- Operating Temperature:
- 0°C ~ 70°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-QSOP
MAX4521CEE+T FAQ
1.How can I place an order for MAX4521CEE+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX4521CEE+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 MAX4521CEE+T reliable?
The price and inventory of MAX4521CEE+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX4521CEE+T is usually 5 days.
3.What payment methods are accepted for MAX4521CEE+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX4521CEE+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX4521CEE+T?
MAX4521CEE+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX4521CEE+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 MAX4521CEE+T?
For technical support, including MAX4521CEE+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX4521CEE+T requirements.
6.How does Aetrix verify that MAX4521CEE+T is sourced from the original manufacturer or authorized distributors?
All MAX4521CEE+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 MAX4521CEE+T meets industry standards.
7.What is the process for return or replacement of MAX4521CEE+T?
All MAX4521CEE+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX4521CEE+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 MAX4521CEE+T part is unused and in its original packaging.
Return procedure for MAX4521CEE+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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