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Analog Devices Inc. ADG439FBRZ-REEL
- Part No.:
- ADG439FBRZ-REEL
- Manufacturer:
- Analog Devices Inc.
- Package:
- 16-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
ADG439FBRZ-REEL.pdf
- Description:
- IC SWITCH SP4T X 2 270OHM 16SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,073
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Product details
Overview
ADG439FBRZ-REEL from Analog Devices is a 4-channel differential fault-protected analog multiplexer IC designed for high-reliability signal routing in harsh industrial and test environments. It features ±40 V to +55 V continuous overvoltage tolerance, 270 Ω typical on-resistance, 250 ns maximum tON, break-before-make switching, and operates across −40°C to +125°C with dual ±15 V supplies. It serves as a robust front-end switch in data acquisition systems where sensor overvoltage events are common.
For engineers reviewing the ADG439FBRZ-REEL datasheet, ADG439FBRZ-REEL pinout, ADG439FBRZ-REEL application, or ADG439FBRZ-REEL equivalent, key selection criteria include fault protection range (−40 V to +55 V), differential channel count (4), SOIC_N-16 package compatibility, leakage current under fault conditions (<0.2 μA), and TTL/CMOS-compatible digital control interface.
Technical Context
The ADG439FBRZ-REEL implements a series n-p-n MOSFET architecture per differential channel, enabling intrinsic fault protection without external components. During overvoltage events, one MOSFET saturates to clamp current while maintaining isolation-allowing continuous operation even with power supplies off.
It uses 2-bit binary address decoding (A0, A1) plus active-high EN to select one of four differential pairs (S1A/S1B through S4A/S4B) to the common differential output (DA/DB). Its trench-isolated construction prevents latch-up and improves off-isolation to 93 dB at 100 kHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Analog Channel Type | Differential 4:1 multiplexer - routes one of four balanced analog signal pairs to a common differential output path. |
| Fault Protection Range | −40 V to +55 V continuous - protects against sensor disconnects, wiring faults, and ESD-induced transients without damage. |
| On-Resistance (RON) | 270 Ω typical at ±10 V signal swing - ensures minimal gain error and voltage drop in precision measurement paths. |
| Switching Speed | tON ≤ 250 ns, tOFF ≤ 150 ns - supports high-throughput scanning in automated test equipment (ATE) and real-time control loops. |
| Off-Leakage (Power Off) | ≤ 0.2 μA max at ±25 V - preserves signal source integrity and avoids loading during system power-down or brownout. |
| Off Isolation | 93 dB at 100 kHz - suppresses crosstalk between unselected channels in multi-sensor monitoring applications. |
| Operating Temperature | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and avionics-grade deployments. |
Pinout & Package
ADG439FBRZ-REEL is housed in a 16-lead narrow-body SOIC (SOIC_N, R-16) package, 10.0 mm × 4.0 mm × 1.5 mm, RoHS-compliant and tape-and-reel packaged (REEL suffix).
| Pin | Circuit Role | Design Meaning |
|---|---|---|
| A0 | Binary Address Input | Selects LSB of 2-bit channel address; logic high/low determines which differential pair is routed. |
| EN | Enable Control Input | Active-high global enable; when low, all channels disconnect, achieving open-circuit input/output behavior. |
| VSS | Negative Supply Rail | Most negative potential; connects to −15 V in dual-supply mode or ground in single-supply configurations. |
| S1A–S4A | Differential Source Terminals (A-side) | Positive inputs of four differential signal sources; each paired with corresponding SxB pin. |
| S1B–S4B | Differential Source Terminals (B-side) | Negative inputs of four differential signal sources; matched to SxA pins for common-mode rejection. |
| DA / DB | Differential Drain Outputs | Common output pair; DA carries inverted signal relative to DB in standard differential signaling convention. |
| VDD | Positive Supply Rail | Most positive potential; typically +15 V; powers internal logic and switch bias circuitry. |
| GND | Ground Reference | 0 V reference for digital control signals and substrate bias; separate from analog ground in mixed-signal layouts. |
Key Features
| Feature | Design Value |
|---|---|
| Fault-tolerant architecture | Series n-p-n MOSFET structure clamps overvoltage without external protection diodes or fuses. |
| Break-before-make switching | Guaranteed tOPEN ≥ 40 ns prevents momentary shorting between differential channels during reconfiguration. |
| Trench isolation | Dielectric separation eliminates latch-up risk - critical for operation in high-noise industrial environments. |
| Ultra-low off-leakage | ±0.5 nA typical drain/source off-leakage at ±10 V - preserves accuracy in high-impedance sensor interfaces. |
| Charge injection control | 15 pC typical - minimizes settling glitches in precision ADC front-ends and sample-and-hold circuits. |
Applications
| Data Acquisition Systems | Industrial Process Control |
|---|---|
Use Scenario: Multiplexing multiple RTD or thermocouple inputs into a single high-resolution ADC in a modular PLC rack. IC Role / Device Role / Timing Role: Fault-protected differential analog switch managing signal routing and overvoltage isolation at the sensor interface layer. Use Value: Enables hot-swappable I/O modules without risking damage from field-wiring faults or ground-loop transients. |
Use Scenario: Routing calibrated 4–20 mA loop signals from pressure, flow, and level transmitters to centralized diagnostics hardware. IC Role / Device Role / Timing Role: High-common-mode-rejection analog multiplexer ensuring signal integrity amid noisy plant-floor EMI. Use Value: Maintains <1 LSB error in 16-bit measurements despite ±40 V common-mode surges induced by motor drives. |
| Avionics Test Equipment | High-Reliability Control Systems |
Use Scenario: Automated functional testing of flight-critical sensor harnesses using programmable stimulus and response capture. IC Role / Device Role / Timing Role: Precision differential switch enabling bidirectional signal routing between DUT and test instrumentation. Use Value: Eliminates need for relay-based switching matrices-reducing test head size, wear-out failure modes, and calibration drift. |
Use Scenario: Redundant sensor voting logic in turbine engine controllers, where three independent temperature sensors feed a majority-vote circuit. IC Role / Device Role / Timing Role: Fault-aware analog selector that isolates failed sensor channels without propagating fault currents. Use Value: Supports fail-operational design by maintaining valid signal paths even during sustained overvoltage events on one channel. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar fault-protected analog multiplexer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADG438FBRZ-REEL | 8-channel single-ended architecture vs. ADG439FBRZ-REEL's 4-channel differential topology; identical fault rating and package. | Used where single-ended sensor outputs dominate and channel density outweighs common-mode rejection needs. | Select ADG438FBRZ-REEL only when system-level noise immunity allows single-ended routing and higher channel count is required. |
| MAX14662ETA+T | Single 4:1 differential mux with ±60 V fault protection but no break-before-make guarantee; 3.3 V/5 V logic compatible only. | Targeted at lower-voltage portable instrumentation; lacks extended temperature qualification (−40°C to +105°C max). | Choose MAX14662ETA+T only for cost-sensitive, non-automotive applications requiring wider fault margin but relaxed timing and thermal specs. |
Compared with ADG439FBRZ-REEL, ADG438FBRZ-REEL offers greater channel count at the expense of differential signaling, while MAX14662ETA+T trades guaranteed break-before-make and industrial temperature range for higher absolute fault voltage rating and lower supply voltage operation.
Availability
ADG439FBRZ-REEL is available at Aetrix Electronics and suitable for data acquisition systems, industrial process control, avionics test equipment, and high-reliability control systems requiring stable component supply across extended temperature and fault stress conditions.
Supply support for ADG439FBRZ-REEL 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
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The ADG439F belongs to Analog Devices' fault-protected analog switch product line, engineered specifically for ruggedized signal routing in mission-critical industrial, aerospace, and test instrumentation applications where overvoltage resilience is non-negotiable.
FAQ
What is the maximum continuous overvoltage rating for ADG439FBRZ-REEL?
The ADG439FBRZ-REEL withstands continuous analog input voltages from −40 V to +55 V regardless of power supply state. This rating applies to both powered and unpowered conditions, verified per Absolute Maximum Ratings Table 2 in the Rev. E datasheet. The device achieves this via intrinsic n-p-n MOSFET clamping, eliminating need for external protection components.
Does ADG439FBRZ-REEL support single-supply operation?
Yes, ADG439FBRZ-REEL supports single-supply operation: VSS may be connected to GND while VDD operates at +12 V to +15 V. However, the analog signal range shrinks to GND + 1.4 V to VDD − 1.4 V (open-circuit) due to MOSFET threshold constraints. Full ±15 V dual-supply operation delivers optimal dynamic range and fault protection symmetry.
How many differential channels does ADG439FBRZ-REEL provide?
The ADG439FBRZ-REEL provides exactly four differential channels, each consisting of a complementary pair (e.g., S1A/S1B). Only one differential pair is connected to the common differential output (DA/DB) at any time, selected by the 2-bit address (A0, A1) and enabled by the EN pin.
Is ADG439FBRZ-REEL pin-compatible with ADG438FBRZ-REEL?
No, ADG439FBRZ-REEL is not pin-compatible with ADG438FBRZ-REEL. Though both use the same SOIC_N-16 package, their pin functions differ significantly: ADG439FBRZ-REEL dedicates pins to differential source pairs (S1A–S4B), whereas ADG438FBRZ-REEL assigns pins to eight single-ended sources (S1–S8) and a single drain (D). PCB layout must be redesigned for interchange.
What is the guaranteed break-before-make delay (tOPEN) for ADG439FBRZ-REEL?
The ADG439FBRZ-REEL guarantees a minimum break-before-make delay (tOPEN) of 40 ns across −40°C to +125°C, measured between 80% points of adjacent channel transitions. This parameter is explicitly specified in Table 1 under Dynamic Characteristics and ensures no momentary shorting between differential inputs during channel reselection.
ADG439FBRZ-REEL Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Switch Circuit:
- SP4T
- Multiplexer/Demultiplexer Circuit:
- 4:1
- Number of Circuits:
- 2
- On-State Resistance (Max):
- 270Ohm (Typ)
- Channel-to-Channel Matching (ΔRon):
- 8.1Ohm
- Voltage - Supply, Single (V+):
- 15V
- Voltage - Supply, Dual (V±):
- ±15V
- Switch Time (Ton, Toff) (Max):
- 230ns, 130ns
- -3db Bandwidth:
- -
- Charge Injection:
- 15pC
- Channel Capacitance (CS(off), CD(off)):
- 3pF, 22pF
- Current - Leakage (IS(off)) (Max):
- 500pA
- Crosstalk:
- -93dB @ 100kHz
- Operating Temperature:
- -40°C ~ 125°C (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 16-SOIC
ADG439FBRZ-REEL FAQ
1.How can I place an order for ADG439FBRZ-REEL through Aetrix?
Please submit a Request for Quotation (RFQ) for ADG439FBRZ-REEL 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 ADG439FBRZ-REEL reliable?
The price and inventory of ADG439FBRZ-REEL are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for ADG439FBRZ-REEL is usually 5 days.
3.What payment methods are accepted for ADG439FBRZ-REEL?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for ADG439FBRZ-REEL transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for ADG439FBRZ-REEL?
ADG439FBRZ-REEL orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your ADG439FBRZ-REEL 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 ADG439FBRZ-REEL?
For technical support, including ADG439FBRZ-REEL datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your ADG439FBRZ-REEL requirements.
6.How does Aetrix verify that ADG439FBRZ-REEL is sourced from the original manufacturer or authorized distributors?
All ADG439FBRZ-REEL 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 ADG439FBRZ-REEL meets industry standards.
7.What is the process for return or replacement of ADG439FBRZ-REEL?
All ADG439FBRZ-REEL units undergo pre-shipment inspection (PSI). If there is an issue with ADG439FBRZ-REEL, 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 ADG439FBRZ-REEL part is unused and in its original packaging.
Return procedure for ADG439FBRZ-REEL:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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