ADV3219ACPZ - 800 MHz 2:1 Analog Multiplexer | Analog Devices
MPN: ADV3219ACPZ ✓ ActiveADV3219ACPZ Overview
An analog multiplexer is an analog switch that selects one input path from multiple candidates and connects it to a shared output. Within the signal-chain hierarchy, a 2:1 analog multiplexer can be used for channel selection, test-point routing, sampling-path control, and signal steering. The buffered architecture separates the switch core from the external signal path, allowing the selected channel to drive downstream circuitry with high slew rate and predictable dynamic performance.
The ADV3219 family provides a −3 dB signal bandwidth greater than 800 MHz and switching times of less than 20 ns to 1% settling. According to the Analog Devices product page, the devices provide −82 dB crosstalk and −88 dB isolation at 5 MHz. Differential gain is less than 0.02%, making the mux suitable for systems in which switching transients, channel-to-channel leakage, or amplitude mismatch would degrade the selected signal.
The ACPZ package is a compact 8-LFCSP-WD surface-mount option with a 3 mm × 3 mm body. Its small footprint supports dense instrumentation and test-equipment layouts, although careful via placement and return-path control are necessary because the part is intended for signals extending beyond 800 MHz. The mux architecture provides one circuit, two selectable input paths, and a buffered common output rather than the four-channel arrangement associated with unrelated high-speed mux families.
Typical applications include high-speed instrumentation, automated test equipment, communications signal routing, data-acquisition systems, and oscilloscope or measurement front ends. It can also be used to steer local, remote, or calibration signals in systems where fast settling and low crosstalk are important. A selected channel may be driven into a high-impedance measurement chain, although downstream loading, termination, and bandwidth must be checked against the complete signal path.
For PCB implementation, place input and output connections close to the device, provide a continuous ground reference, and minimize parasitic capacitance on the high-frequency nodes. Because the device is specified for signals above 800 MHz, connector launches, return vias, and package transitions can materially affect measured performance. Validate the assembled board with the intended source impedance, termination, cable or fixture loading, and measurement bandwidth.
This product page combines the manufacturer’s published bandwidth, switching, crosstalk, and isolation characteristics with application-specific routing guidance. It also distinguishes direct device facts from application guidance so engineers can evaluate the ADV3219ACPZ for high-speed analog routing without treating generic switch assumptions as guaranteed performance.
Drop-in alternatives for ADV3219ACPZ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesADV3219ACPZ Specifications
| Product Type | Buffered 2:1 analog multiplexer |
| Number of Circuits | 1 circuit |
| Signal Bandwidth | Greater than 800 MHz at −3 dB |
| Channel Switching Time | Less than 20 ns to 1% settling |
| Crosstalk | −82 dB at 5 MHz |
| Isolation | −88 dB at 5 MHz |
| Differential Gain | Less than 0.02% |
| On Resistance | 0.02 ohm |
| Supply Voltage Range | ±4.5 V to ±5.5 V |
| Package | 8-LFCSP-WD, 3 mm × 3 mm |
| Mounting Type | Surface mount |
| Number of Pins | 8 pins |
ADV3219ACPZ 8-lfcsp-wd, 3 mm × 3 mm Pin Configuration Guide
Pin configuration for ADV3219ACPZ (8-lfcsp-wd, 3 mm × 3 mm package). Pin numbering, functions, and connection diagrams are defined in the manufacturer datasheet. Refer to it for the exact footprint and soldering guidelines.
No detailed pinout data available for ADV3219ACPZ.
Refer to the datasheet for full pin configuration.
Typical Applications
ADV3219ACPZ is suitable for 6 applications: High-Speed Oscilloscope Signal Routing, Automated Test Equipment, Communications Signal Steering, Data-Acquisition Front Ends, Calibration Signal Injection, RF and Microwave Test Paths.
High-Speed Oscilloscope Signal Routing
The ADV3219ACPZ can steer a selected measurement channel into an oscilloscope front end when acquisition speed and channel isolation are critical. Its signal bandwidth greater than 800 MHz preserves high-frequency content, while switching below 20 ns to 1% settling reduces the interval before acquisition can begin. The buffered architecture also allows the selected path to drive a downstream high-impedance measurement chain without adding a separate RF buffer. Designers should account for probe capacitance, connector launches, source impedance, and the oscilloscope’s input bandwidth so the complete path—not only the mux—is bandwidth-limited.
Automated Test Equipment
The ADV3219ACPZ is well suited to automated test systems that must connect stimulus or measurement signals rapidly between fixture paths. Greater than 800 MHz bandwidth supports test signals with significant harmonic content, while less than 20 ns switching to 1% settling helps limit dead time between measurements. Its specified −82 dB crosstalk and −88 dB isolation at 5 MHz reduce channel interaction when multiple high-speed paths share the test system. Fixture discontinuities and long PCB traces can still create reflections or loss, so controlled impedance, short launches, and matched terminations remain important.
Communications Signal Steering
The ADV3219ACPZ can route high-frequency communications signals between transmit, receive, calibration, or monitoring paths in instrumentation and test systems. Its greater than 800 MHz bandwidth accommodates demanding waveforms, and the high slew-rate buffered output reduces distortion during channel changes. The less than 20 ns settling specification is especially useful when control timing must fit within a short acquisition or calibration window. Designers should verify common-mode range, signal amplitude, logic levels, and return loss for their interface, while keeping ground references continuous to control high-frequency coupling.
Data-Acquisition Front Ends
The ADV3219ACPZ can select among high-speed inputs in a data-acquisition front end where narrow acquisition windows demand fast settling. Its greater than 800 MHz bandwidth preserves rapidly changing analog information, and differential gain below 0.02% supports amplitude accuracy in sensitive measurements. The buffered output provides a low-impedance drive path for subsequent circuitry, but the selected source must still be checked for DC coupling, impedance, and safe input amplitude. Short traces, solid ground planes, and controlled return vias are necessary to prevent the PCB from limiting performance above the 800 MHz device bandwidth.
Calibration Signal Injection
The ADV3219ACPZ can switch calibration, reference, or diagnostic signals into a high-speed measurement chain through a common buffered output. Fast settling below 20 ns to 1% supports prompt transition between operational and calibration paths, while strong isolation at 5 MHz helps prevent the inactive calibration source from disturbing the selected channel. The 8-LFCSP-WD 3 mm × 3 mm package also saves board area compared with larger discrete routing networks. Use short, symmetrical connections and maintain uninterrupted grounding so switching energy and fixture reflections do not degrade calibration accuracy.
RF and Microwave Test Paths
The ADV3219ACPZ is applicable to test paths that route high-frequency signals within the bandwidth and isolation limits of the device. The greater than 800 MHz bandwidth is useful for broadband test signals, while −82 dB crosstalk and −88 dB isolation at 5 MHz improve separation between routed channels. Its buffered output helps maintain edge quality through routing transitions. However, operation close to or beyond 800 MHz requires careful impedance-controlled PCB design, short vias, calibrated launch structures, and awareness that connectors, cables, and test fixtures may impose the practical system bandwidth limit.
Engineering reference data for ADV3219ACPZ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Brand | Analog Devices |
| Package | 8-LFCSP-WD, 3 mm × 3 mm |
| Product Type | Buffered 2:1 analog multiplexer |
| Number of Circuits | 1 circuit |
| Signal Bandwidth | Greater than 800 MHz at −3 dB |
| Switching Time | Less than 20 ns to 1% settling |
| Crosstalk | −82 dB at 5 MHz |
| Isolation | −88 dB at 5 MHz |
| Differential Gain | Less than 0.02% |
| On Resistance | 0.02 ohm |
| Supply Voltage Range | ±4.5 V to ±5.5 V |
Key Differentiators
- High-speed bandwidth supports wideband routing (vs Typical low-bandwidth analog switch)
- Rapid channel transition reduces acquisition dead time (vs General-purpose relay-based routing)
- Buffered output preserves high-speed signal integrity (vs Unbuffered passive multiplexer)
Design Notes
Place the input, output, and control connections close to the 8-LFCSP-WD package and keep the high-frequency return path continuous. Use short traces with controlled impedance, minimize stub branches, and provide nearby ground vias where the routing requires reference-plane transitions. At frequencies approaching the greater-than-800-MHz device bandwidth, PCB loss, vias, and test-fixture launches can dominate system performance even when the mux itself meets its specified bandwidth.
Validate channel settling with the intended source impedance, termination, and downstream load rather than relying only on the less-than-20-ns specification. Correct output termination limits reflections, while source impedance determines how quickly the selected channel can charge parasitic capacitance. Measure crosstalk and isolation in the assembled layout because adjacent high-speed traces, connectors, and return-path discontinuities can degrade the values observed at the device pins.
Do not assume that two 8-pin high-speed multiplexers are interchangeable because their packages match. Confirm the exact pin assignment, common-output architecture, control polarity, supply arrangement, signal range, and enable timing in the manufacturer documentation. Also verify the full ACPZ ordering suffix and reel markings before releasing a production drawing; the ACPZ suffix identifies a specific package configuration rather than a generic 8-LFCSP option.
Compliance Information
Compliance attributes are not stated in the available manufacturer and distributor information and therefore remain unknown.
