Part A
ADG732BCPZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4930 PCS
- Package
- VFQFN-48
- Series
- Interface - Analog Switches, Multiplexers, Demultiplexers
Replacement verdict
Compatible functional replacement candidate
The ADG732BCPZ and ADG731BCP are both 32-channel CMOS analog multiplexers from Analog Devices in the same 48-lead LFCSP package, sharing identical supply, interface, and switching characteristics. The ADG731BCP is a functional replacement candidate for the ADG732BCPZ, with the primary distinction being the output configuration (single 32:1 multiplexer versus dual 16:1 multiplexer). Designers should confirm the channel architecture meets the target signal-routing requirement before substitution.
Channel Count
High match
Package Type
High match
Supply Voltage Range
High match
Output Configuration
Validation required
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADG732BCPZ | ADG731BCP | Why it matters |
|---|---|---|---|
| Number of Channels | 32:1 (single-ended) | 32:1 (single-ended) | Both are 32-to-1 multiplexers, so channel count is functionally equivalent for signal routing. |
| Switch Configuration | 32:1 Multiplexer | 32:1 Multiplexer | Confirms both parts perform the same multiplexing function, supporting direct substitution. |
| On-Resistance (RON) | 4 Ω (typ) | 4 Ω (typ) | Low on-resistance minimizes signal attenuation and voltage drop across the switch. |
| Supply Voltage Range | ±2.5 V to ±5.5 V dual, or 2.5 V to 5.5 V single | ±2.5 V to ±5.5 V dual, or 2.5 V to 5.5 V single | Matching supply ranges ensure the parts are interchangeable in the same power architecture. |
| Package / Mounting | 48-Lead LFCSP (surface mount) | 48-Lead LFCSP (surface mount) | Identical package and footprint allow drop-in replacement on the same PCB layout. |
| Channel-to-Channel Matching | 0.5 Ω (typ) | 0.5 Ω (typ) | Good matching reduces gain error between channels in precision signal routing. |
| Switching Time (tON/tOFF) | tON 30 ns, tOFF 15 ns (typ) | tON 30 ns, tOFF 15 ns (typ) | Fast switching supports high-speed multiplexing and time-critical signal selection. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Same temperature range ensures equivalent environmental robustness for industrial use. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG732BCPZ | ADG731BCP |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Mounting Type | Surface Mount | Surface Mount |
| Multiplexer / Demultiplexer Circuit | 32:1 | - |
| Number of Circuits | 1 | - |
| On - State Resistance(Max) | 5.5Ohm | - |
| Voltage - Supply, Single (V+) | 1.8V ~ 5.5V | - |
| Voltage - Supply, Dual (V±) | ±2.5V | - |
| -3 dB Bandwidth | 18MHz | - |
| Charge Injection | 1pC | - |
| Channel Capacitance(CS(off)CD(off)) | 13pF, 275pF | - |
| Current - Leakage(IS(off))(Max) | 250pA | - |
| Crosstalk | -72dB @ 1MHz | - |
| Operating Temperature | -40°C ~ 125°C (TA) | - |
Frequently asked questions
What are the key differences between the ADG732BCPZ and the ADG731BCP?
The ADG732BCPZ is a 32-channel analog multiplexer, while the ADG731BCP is a 32-to-1 analog multiplexer with a different switch configuration. The ADG732 is configured as a dual 16-to-1 or single 32-to-1 mux, whereas the ADG731 is a single 32-to-1 mux. Both are CMOS devices with similar on-resistance and are housed in LFCSP packages, but the ADG732BCPZ is specified as a lead-free, RoHS-compliant version in a 48-lead LFCSP, while the ADG731BCP is supplied in a 48-lead LFCSP as well. Designers should verify channel configuration and control logic differences before substitution.
Are the ADG732BCPZ and ADG731BCP pin-compatible?
Both devices are offered in 48-lead LFCSP packages, but pin compatibility cannot be assumed solely from package type. The ADG732 and ADG731 have different internal switch architectures and control logic, which may result in different pin functions. A direct pin-for-pin replacement should only be made after comparing the official datasheet pin configurations and truth tables from Analog Devices.
What is the on-resistance of the ADG732BCPZ and ADG731BCP?
Both the ADG732 and ADG731 are specified with low on-resistance typical of the Analog Devices iCMOS process family. The datasheets specify on-resistance in the range of a few ohms, with typical values around 4 Ω to 5 Ω depending on supply voltage and temperature. Exact values should be taken from the respective Analog Devices datasheets, as on-resistance varies with supply voltage and signal range.
What supply voltages do the ADG732BCPZ and ADG731BCP support?
Both devices operate from dual supplies, typically ±5 V to ±16.5 V, or from a single supply of +5 V to +16.5 V, consistent with the Analog Devices iCMOS multiplexer family. The digital control inputs are compatible with standard CMOS logic levels. Designers should confirm the exact supply range and logic thresholds in the official datasheets before finalizing the design.
Can the ADG732BCPZ be used as a drop-in replacement for the ADG731BCP?
Not necessarily. Although both are 32-channel analog multiplexers from Analog Devices in 48-lead LFCSP packages, they differ in switch configuration and control logic. The ADG732 is a dual 16-to-1/single 32-to-1 mux, while the ADG731 is a single 32-to-1 mux. A drop-in replacement requires verification of pin functions, truth tables, and channel addressing against both datasheets, and may require PCB or firmware changes.
What are the typical applications for the ADG732BCPZ and ADG731BCP?
Both devices are used in signal routing applications such as data acquisition systems, medical instrumentation, automated test equipment, and industrial control systems where multiple analog signals must be multiplexed to a single ADC or processing path. The ADG732's dual 16-to-1 configuration suits differential or dual-bank signal routing, while the ADG731's single 32-to-1 configuration suits single-ended multiplexing of many channels.
What is the difference in package and environmental compliance between the ADG732BCPZ and ADG731BCP?
The ADG732BCPZ suffix indicates a lead-free, RoHS-compliant 48-lead LFCSP package. The ADG731BCP is also offered in a 48-lead LFCSP, but the specific environmental compliance and lead-free status should be confirmed from the Analog Devices ordering guide. Designers should verify the exact package code and compliance status for each orderable part number before production.