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ADG5421FBCPZ-RL7 - Analog Devices

Name: Analog Devices ADG5421FBCPZ-RL7
Brand: Analog Devices
SKU: ADG5421FBCPZ-RL7
Price: 4.441 USD
Availability: InStock
Rating: 5 (2 reviews)

Manufacturer Part Number: ADG5421FBCPZ-RL7

Manufacturer: Analog Devices, Inc.

Allelco Part Number: 41D-ADG5421FBCPZ-RL7

Warranty: 1 Year Allelco Warranty - Find out more

Stock Status:: 9,560 pcs available, New & Original

Parts Description: -

Data sheet: -

Category: Integrated Circuits (ICs) > Specialized ICs

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Quantity	Unit Price	Ext. Price
1+	$4.70	$4.70
10+	$4.589	$45.89
30+	$4.515	$135.45
100+	$4.441	$444.10

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Specifications

ADG5421FBCPZ-RL7 Tech Specifications
Analog Devices - ADG5421FBCPZ-RL7 technical specifications, attributes, parameters and parts with similar specifications to Analog Devices - ADG5421FBCPZ-RL7

Product Attribute	Attribute Value
Part Number	ADG5421FBCPZ-RL7
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Parts Introduction

Manufacturer Part Number

ADG5421FBCPZ-RL7

Manufacturer

analog-devices

Introduction

The ADG5421FBCPZ-RL7 is a high-performance, dual single-pole, single-throw (SPST) analog switch from Analog Devices. This switch offers exceptional performance with fast switching times, low on-resistance, and high bandwidth, making it suitable for a wide range of applications, including data acquisition, instrumentation, and signal routing.

Product Features and Performance

Dual SPST analog switch

Very low on-resistance (14Ω max)

Excellent channel-to-channel matching (20mΩ)

Fast switching times (15.9μs max turn-on, 160ns max turn-off)

High bandwidth (-3dB at 630MHz)

Low charge injection (-150pC)

Low channel capacitance (6pF off, 5pF off)

Extremely low leakage current (200pA max)

Excellent crosstalk performance (-78dB @ 1MHz)

Wide supply voltage range (8V to 44V single, ±5V to ±22V dual)

Extended operating temperature range (-40°C to 125°C)

Product Advantages

Exceptional RF and analog performance

Compact, space-saving 10-WFDFN, CSP package

Versatile single and dual supply voltage options

Suitable for a wide range of applications

Key Reasons to Choose This Product

Industry-leading performance for high-speed, high-precision signal switching

Compact and power-efficient design for space-constrained applications

Robust operating temperature range for use in demanding environments

Reliable and long-lasting solution backed by Analog Devices' reputation

Quality and Safety Features

Manufactured to the highest quality standards

RoHS-compliant and lead-free

Compatibility

The ADG5421FBCPZ-RL7 is compatible with a wide range of electronic systems and can be used in various applications.

Application Areas

Data acquisition systems

Instrumentation and test equipment

Signal routing and switching

RF and analog signal processing

Multiplexing and demultiplexing

Product Lifecycle

The ADG5421FBCPZ-RL7 is an active product, and there are no known plans for discontinuation. While there may be equivalent or alternative models available from Analog Devices or other manufacturers, it is recommended to contact our website's sales team for the most up-to-date information on available options.

Frequently Asked Questions(FAQ)

How does the ADG5421FBCPZ-RL7 compare to other single-pole single-throw (SPST) switches in terms of on-state resistance and bandwidth for high-speed signal routing applications?: The ADG5421FBCPZ-RL7 features a maximum on-state resistance of 14 ohms and supports a -3dB bandwidth of 630 MHz, making it suitable for precision analog switching where low insertion loss is critical. Compared to similar SPST switches with higher Ron values or narrower bandwidths, this device offers improved linearity and faster signal integrity, particularly in systems requiring minimal distortion up to several hundred megahertz. Its combination of low Ron and high bandwidth enables reliable performance in instrumentation amplifiers and data acquisition front-ends where signal fidelity directly impacts measurement accuracy.

What are the key thermal and reliability considerations when integrating the ADG5421FBCPZ-RL7 into a compact PCB design using its 10-LFCSP package?: The ADG5421FBCPZ-RL7’s 10-LFCSP (3x2) package provides excellent thermal dissipation due to its exposed pad, which enhances heat transfer from the die to the PCB copper plane. However, designers must ensure adequate thermal vias under the package to prevent localized heating during continuous conduction. With an operating temperature range of -40°C to +125°C and an MSL rating of 1, the component is highly robust for industrial and automotive environments. Proper layout practices—such as minimizing trace inductance near switch nodes and avoiding ground loops—further support long-term reliability in space-constrained designs.

In what scenarios would the charge injection specification of -150pC on the ADG5421FBCPZ-RL7 significantly impact system performance?: Charge injection of -150pC means that when the ADG5421FBCPZ-RL7 switches states, a small amount of charge is injected into the signal path, which can distort high-impedance circuits such as sample-and-hold amplifiers or sensor interfaces. In precision analog systems sampling at low levels (e.g., microvolt-level signals), this injected charge may cause transient errors during switching transitions. While not always problematic, applications involving capacitive loads above 1nF or sampling rates exceeding 100ksps should evaluate whether this level of charge injection introduces unacceptable glitches, necessitating careful timing control or post-processing compensation.

How does channel-to-channel matching (ΔRon = 20mΩ) affect crosstalk and gain error in differential switching configurations using two instances of the ADG5421FBCPZ-RL7?: The ADG5421FBCPZ-RL7 exhibits tight channel-to-channel resistance matching with a ΔRon of just 20 milliohms, which minimizes mismatch-induced gain variation in differential signal paths. This precision reduces crosstalk between channels even when both are active simultaneously, contributing to its -78dB crosstalk performance at 1MHz. For balanced signal routing—such as in bridge sensor measurements or differential ADC inputs—this low ΔRon ensures consistent current delivery across channels, preserving signal symmetry and improving common-mode rejection without requiring additional calibration steps.

Can the ADG5421FBCPZ-RL7 safely interface with 5V logic levels while being powered by a 24V supply, and how does this affect control interface design?: Yes, the ADG5421FBCPZ-RL7 supports a wide supply voltage range of 8V to 44V on a single rail, allowing it to operate from a 24V supply while accepting standard 5V CMOS logic inputs. This makes it ideal for interfacing legacy digital controllers with high-voltage analog subsystems. However, designers must verify that the logic high input threshold is compatible with the 5V drive; since the part accepts up to 44V on V+, the input stage is designed to tolerate overvoltage conditions, but noise margins should still be assessed under worst-case temperature and supply variations to avoid unintended triggering.

What is the significance of the fast turn-off time (Toff max = 160ns) in the ADG5421FBCPZ-RL7, and how does it compare to typical relay-based switching solutions?: The ADG5421FBCPZ-RL7 has a maximum turn-off delay of 160 nanoseconds, enabling rapid deactivation of the switch after the control signal changes. This speed surpasses mechanical relays by several orders of magnitude and allows precise timing control in multiplexed data acquisition systems. Combined with a total switch time (Ton + Toff) well below 17µs, the device supports accurate strobing in high-speed sampling architectures. Unlike relays, which suffer from contact bounce and limited lifespans, this solid-state solution offers deterministic behavior essential for synchronous measurement protocols.

Why might a designer choose the ADG5421FBCPZ-RL7 over alternative SPDT switches despite its SPST-only architecture?: Although each channel of the ADG5421FBCPZ-RL7 implements only SPST functionality, its ultra-low Ron, high bandwidth, and excellent crosstalk isolation make it preferable for building custom multiplexers via cascaded stages. When compared to integrated SPDT alternatives that often trade off Ron or bandwidth, using multiple ADG5421FBCPZ-RL7 units allows optimized performance per channel. Additionally, the 2:1 configuration provides flexibility in routing single-ended signals without needing complementary switch structures, reducing BOM complexity in certain multi-drop analog bus applications.

How does leakage current (Is(off) max = 200pA) influence power consumption and stability in battery-powered measurement systems using the ADG5421FBCPZ-RL7?: At 200pA maximum off-leakage, the ADG5421FBCPZ-RL7 consumes negligible power when channels are inactive, supporting extended operation in energy-constrained environments like portable medical devices or IoT sensors. This low leakage prevents unwanted discharge of high-impedance sources connected through inactive switches, maintaining signal integrity over time. Over a year, this translates to femtojoule-level static power dissipation per channel, which is orders of magnitude lower than many CMOS muxes, thereby enhancing system efficiency without compromising switching speed or dynamic range.

Are there any layout precautions specific to the ADG5421FBCPZ-RL7 that help maintain its high-frequency performance and minimize electromagnetic interference?: To preserve the ADG5421FBCPZ-RL7’s 630MHz bandwidth and -78dB crosstalk performance, keep signal traces short and avoid routing adjacent channels parallel to one another over long distances. Ground planes should be uninterrupted beneath the LFCSP, and decoupling capacitors (typically 0.1μF ceramic) must be placed within 1mm of the V+ and GND pins. Due to its small form factor, parasitic capacitance and inductance are inherently minimized, but improper grounding can degrade channel isolation. Avoid placing sensitive analog traces near control lines to prevent coupling through substrate noise.

How does the moisture sensitivity level (MSL 1) of the ADG5421FBCPZ-RL7 simplify manufacturing flow compared to more sensitive components?: Rated MSL 1, the ADG5421FBCPZ-RL7 has unlimited floor life before reflow, eliminating the need for dry storage, baking, or nitrogen reflow processes. This greatly simplifies assembly logistics and reduces handling costs in high-volume production, especially when sourcing via tape-and-reel packaging. Unlike MSL 2 or higher parts that require strict humidity monitoring, this feature ensures consistent solderability across diverse manufacturing environments, supporting leaner supply chain operations without compromising reliability or yield.

Can the ADG5421FBCPZ-RL7 handle bidirectional signal paths, and what constraints exist on current flow directionality?: Yes, the ADG5421FBCPZ-RL7 supports bidirectional current flow because it uses complementary metal-oxide-semiconductor (CMOS) transmission gate technology. There is no restriction on current direction, allowing flexible routing in both source-follower and driver configurations. This bidirectional capability simplifies circuit design where signal polarity may vary or where back-driving protection is needed. However, maximum continuous current per channel is typically limited by package power dissipation, so thermal derating should be considered at elevated ambient temperatures or high duty cycles.

What role does channel capacitance play in the ADG5421FBCPZ-RL7’s switching behavior, particularly when driving capacitive loads?: The ADG5421FBCPZ-RL7 presents 6pF of off-channel capacitance (CS(off)) and 5pF of load capacitance (CD(off)) at each pin. These values affect settling time when switching into large capacitive loads, as the RC time constant formed by Ron and CD(off) determines how quickly the output stabilizes. For example, driving a 100pF load results in an approximate τ = 14Ω × 100pF = 1.4ns, but real-world parasitics extend this slightly. In fast-switching systems, these capacitances can slow down transitions or introduce ringing if terminated improperly, necessitating impedance matching or series termination resistors in RF-sensitive paths.

How do the supply voltage ranges (single: 8V–44V; dual: ±5V to ±22V) enable the ADG5421FBCPZ-RL7 in industrial sensor conditioning circuits?: The broad single-supply range up to 44V accommodates unregulated industrial rails commonly found in factory automation systems, where sensors operate from 24V or 48V power buses. The dual-supply option (±22V) supports precision bipolar signal chains requiring symmetric headroom. This flexibility allows direct connection to transducers without additional level-shifting circuitry, reducing component count and simplifying isolation barriers. The ability to function across such wide voltages without performance degradation underscores its suitability for harsh, high-reliability environments where power fluctuations are common.

Is there any risk of latch-up or electrostatic discharge (ESD) damage to the ADG5421FBCPZ-RL7, and what protective measures are recommended?: Like most CMOS devices, the ADG5421FBCPZ-RL7 is susceptible to latch-up if subjected to voltages beyond its absolute maximum ratings or exposed to uncontrolled ESD events. Although it meets standard HBM (Human Body Model) ESD thresholds per JEDEC, external protection—such as TVS diodes on high-voltage inputs or ferrite beads on control lines—is advisable in noisy industrial settings. Avoid hot-swapping powered boards without proper sequencing, and follow standard ESD handling procedures during manual assembly to mitigate risks inherent in miniaturized semiconductor packages.

How does the absence of a dedicated enable pin impact control logic simplicity in systems using the ADG5421FBCPZ-RL7?: The ADG5421FBCPZ-RL7 relies on direct logic control of its input terminals to activate channels, eliminating the need for an explicit enable signal. This simplifies gate-level design by reducing pin count and associated decoding logic, particularly beneficial in space-limited applications. However, it also means that every input change immediately affects the switch state, increasing susceptibility to glitches unless control signals are cleanly buffered or synchronized to clock edges. Designers must ensure stable logic levels during transitions to prevent partial turn-on conditions that could increase effective Ron or cause shoot-through in complementary pairs.

Given its RoHS3 compliance and REACH unaffected status, what implications does this have for global regulatory adherence when deploying products containing the ADG5421FBCPZ-RL7?: The ADG5421FBCPZ-RL7 complies with RoHS3 directives, meaning it contains no restricted substances beyond the original RoHS limits and excludes additional substances like PFAS in electronics. It is also declared unaffected by REACH regulations, indicating that Analog Devices Inc. has confirmed no SVHC (Substances of Very High Concern) exceed the 0.1% threshold. This dual compliance streamlines certification efforts for end-products targeting Europe, North America, and other regulated markets, reducing legal and documentation overhead during product launch and lifecycle management.

What trade-offs exist between bandwidth and switch speed when selecting the ADG5421FBCPZ-RL7 for video or RF switching applications?: While the ADG5421FBCPZ-RL7 delivers 630MHz bandwidth suitable for many RF and moderate-speed video signals, its 15.9µs turn-on time may limit use in ultra-high-definition video routing requiring sub-microsecond transitions. In such cases, bandwidth alone doesn’t guarantee acceptable edge preservation; the slower Ton dominates overall transition fidelity. Thus, even though bandwidth exceeds 600MHz, applications pushing beyond HD-SDI or wideband IF stages may require faster switches. The device excels where moderate bandwidth combined with low distortion outweighs raw speed requirements.

How does using two ADG5421FBCPZ-RL7 devices in parallel affect total channel count, power dissipation, and crosstalk performance compared to a monolithic quad-SPST alternative?: Using two ADG5421FBCPZ-RL7 ICs yields four independent SPST channels, doubling channel density without requiring larger packages. Power dissipation scales linearly, but crosstalk remains isolated between pairs due to physical separation and internal shielding. Compared to a hypothetical quad-SPST IC, this approach offers better thermal distribution and avoids potential crosstalk coupling within a single die. However, it increases BOM count and board area slightly. The decision hinges on whether modularity and proven performance justify the extra components versus integrating a newer monolithic solution with potentially tighter integration and lower cost.

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Customer Reviews

Evaluation: 10 Articles

Emil***rperTech

Jun 23, 2026

Works exactly as described. I used it as a USB-to-SPI bridge in a small MCU development project and communication was stable from the first setup.
Liam***terTech

Jun 15, 2026

Used this CPLD in a logic control project. Programming was straightforward and signal timing matched the design requirements.
Nath***rooks

Jun 11, 2026

Installed this power component in a converter board. Output remained stable under different load conditions and thermal performance was better than expected.
Dani***alkerTech

Jun 1, 2026

Product works, but setup took more effort than expected. Once configured the MCU ran reliably, although documentation support felt older compared with newer platforms. Fine for maintenance projects.
Yuki***aka88

May 26, 2026

信号通信プロジェクトでこのRS-485トランシーバーを使用しました。設置は簡単で、長距離ケーブルでも通信は安定していました。消費電力も、以前使用していたものより低くなっています。
Stev***aker

May 20, 2026

Solid diode for power rectification. Works well in switching circuits.
Bran***Lewis

May 11, 2026

Compact FPGA with good performance. Suitable for basic signal processing tasks.
Oliv***arris

May 7, 2026

Reliable I/O expander. Works well in embedded control applications.
Jess***Jones

Apr 17, 2026

It offers good value for the price, and the specifications match the description. I’ve been using it for two days with no issues, and I’ll definitely buy it again if I need it in the future.
Mich***Smith

Apr 17, 2026

Shipping was on time, the component pins are neatly aligned, and I tested 10 of them with a multimeter—all readings were within the specified range. Highly recommended.

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America	United States	5
America	Brazil	7
Europe	Germany	5
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Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	Japan	4
Middle East	Israel	6

DHL & FedEx Shipment Charges Reference
Shipment charges(KG)	Reference DHL(USD$)
0.00kg-1.00kg	USD$30.00 - USD$60.00
1.00kg-2.00kg	USD$40.00 - USD$80.00
2.00kg-3.00kg	USD$50.00 - USD$100.00

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