Part A
ADG431BRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4731 PCS
- Package
- SOIC-16
- Series
- Interface - Conmutadores analógicos, Multiplexers, Demultiplexeres
Replacement verdict
Compatible functional replacement candidate
The ADG431BRZ and ADG433BCHIPS are both quad SPST CMOS analog switches from Analog Devices with comparable on-resistance and supply requirements, making them functionally related candidates. However, the ADG433BCHIPS is a die-form (chip) product intended for hybrid and multi-chip module assembly, while the ADG431BRZ is a packaged SOIC device, so direct board-level substitution is not possible without assembly rework. Verify package form, mounting method, and screening level before committing to a design change.
Switch Configuration
High match
On-Resistance
High match
Package Type
Validation required
Mounting Form
Not compatible
Parts at a glance
Part B
ADG433BCHIPS
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7365 PCS
- Package
- Die
- Series
- Interface - Conmutadores analógicos, Multiplexers, Demultiplexeres
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADG431BRZ | ADG433BCHIPS | Why it matters |
|---|---|---|---|
| Number of Switches | 4 (SPST, normally closed) | 4 (SPST, two normally open / two normally closed) | The switch configuration determines whether the part can directly replace the other in a circuit; NC-only versus mixed NO/NC changes the default signal path when unpowered. |
| Switch Configuration | 4 × SPST (NC) | 2 × SPST (NO) + 2 × SPST (NC) | Logic polarity of each switch affects control signal design and fail-safe behavior, so a direct swap may invert channel states. |
| On-Resistance (typ) | 17 Ω | 17 Ω | On-resistance directly impacts signal attenuation and insertion loss; matching values preserve analog signal integrity. |
| Supply Voltage Range | ±4.5 V to ±20 V dual, or 4.5 V to 40 V single | ±4.5 V to ±20 V dual, or 4.5 V to 40 V single | Compatible supply ranges allow the parts to operate in the same power domain without redesign. |
| Channel-to-Channel Matching | 0.5 Ω (typ) | 0.5 Ω (typ) | Matching between channels affects differential signal accuracy and crosstalk in multiplexed analog paths. |
| Switching Time (tON/tOFF) | 110 ns / 90 ns (typ) | 110 ns / 90 ns (typ) | Switching speed determines usable bandwidth and timing behavior in signal routing applications. |
| Package | 16-lead SOIC | Die (bare chip) | Package form factor dictates assembly method; a bare die requires wire bonding and cannot drop into a PCB footprint designed for SOIC. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ratings ensure equivalent environmental robustness in the target application. |
| Logic Input Threshold (VINH) | 2.4 V (min) | 2.4 V (min) | Digital control compatibility with standard logic levels ensures the switch can be driven by the same controller. |
Need help validating a replacement?
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG431BRZ | ADG433BCHIPS |
|---|---|---|
| Supplier | - | Analog Devices Inc. |
| Part Status | Active | Active |
| Switch Circuit | SPST - NC | SPST - NO/NC |
| Multiplexer / Demultiplexer Circuit | 1:1 | 1:1 |
| Number of Circuits | 4 | 4 |
| On - State Resistance(Max) | 24Ohm | 24Ohm |
| Channel - to - Channel Matching(ΔRon) | 1.2Ohm | 1.2Ohm |
| Voltage - Supply, Single (V+) | 12V | 10.8V ~ 13.2V, ±13.5V ~ 16.5V |
| Voltage - Supply, Dual (V±) | ±15V | 10.8V ~ 13.2V, ±13.5V ~ 16.5V |
| Switch Time(Ton Toff)(Max) | 90ns, 60ns | 90ns, 60ns |
| Charge Injection | 5pC | 5pC |
| Channel Capacitance(CS(off)CD(off)) | 9pF, 9pF | 9pF, 9pF |
| Current - Leakage(IS(off))(Max) | 250pA | 250pA |
| Crosstalk | -85dB @ 1MHz | -85dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the key differences between the ADG431BRZ and ADG433BCHIPS?
The ADG431BRZ is a quad SPST (single-pole single-throw) analog switch in a 16-lead SOIC package, while the ADG433BCHIPS is a quad SPST analog switch supplied as bare die (CHIPS). Both are from Analog Devices' ADG431/ADG433 family, but the ADG431BRZ is a packaged, RoHS-compliant SOIC part, whereas the ADG433BCHIPS is an unpackaged die intended for hybrid or chip-on-board assembly.
Are the ADG431BRZ and ADG433BCHIPS functionally interchangeable?
Functionally, both are quad SPST analog switches with similar on-resistance and switching characteristics per the Analog Devices datasheet. However, they are not drop-in interchangeable because the ADG431BRZ is a packaged SOIC device and the ADG433BCHIPS is a bare die requiring die attach and wire bonding. Package and assembly differences must be validated for the target design.
What is the on-resistance of the ADG431BRZ?
Per the Analog Devices ADG431 datasheet, the ADG431BRZ features a typical on-resistance of approximately 17 Ω (with a specified maximum around 35 Ω) at ±15 V dual supply, depending on the exact grade and test conditions. Designers should consult the latest datasheet for guaranteed limits over temperature.
What supply voltage range do the ADG431BRZ and ADG433BCHIPS support?
Both devices are specified for dual-supply operation of ±15 V (with a range typically from ±10 V to ±18 V) and can also operate from a single +12 V supply per the Analog Devices datasheet. The ADG433BCHIPS die follows the same electrical specifications as the packaged ADG433.
What package does the ADG431BRZ use, and how does it differ from the ADG433BCHIPS?
The ADG431BRZ is supplied in a 16-lead SOIC (small outline integrated circuit) package, which is RoHS-compliant and suitable for standard surface-mount PCB assembly. The ADG433BCHIPS is a bare semiconductor die (CHIPS) without a package, intended for chip-on-board or hybrid circuit assembly, requiring die attach and wire bonding processes.
What are the switching times for the ADG431BRZ and ADG433BCHIPS?
According to the Analog Devices ADG431/ADG433 datasheet, typical turn-on time (tON) is approximately 110 ns and turn-off time (tOFF) is approximately 70 ns at ±15 V supply. These switching characteristics apply to both the packaged ADG431BRZ and the ADG433BCHIPS die, as they share the same silicon design.
Can the ADG433BCHIPS be used as a direct replacement for the ADG431BRZ on an existing PCB?
No. The ADG433BCHIPS is a bare die and cannot be mounted on a standard PCB footprint designed for the ADG431BRZ SOIC package. A direct replacement requires either a packaged equivalent or a redesign for chip-on-board assembly with appropriate die attach and wire bonding. Electrical equivalence alone does not ensure mechanical or assembly compatibility.
What are the leakage current specifications for the ADG431BRZ and ADG433BCHIPS?
Per the Analog Devices datasheet, both devices feature low leakage currents, with typical off leakage (ID(OFF)) and on leakage (ID(ON)) in the sub-nanoampere to low-nanoampere range at room temperature, depending on supply and signal conditions. The bare die ADG433BCHIPS follows the same silicon specifications as the packaged ADG433.