Part A
ADG732BSUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2381 Stückzahl
- Package
- TQFP-48
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Replacement verdict
Compatible functional replacement candidate
The ADG732BSUZ and ADG732BSU are functionally equivalent CMOS analog multiplexers sharing identical channel count, switch architecture, and package footprint, with the BSUZ suffix denoting a RoHS-compliant lead-free variant of the same device. Designers can treat the ADG732BSUZ as a direct functional substitute for the ADG732BSU in new and existing designs, provided the lead-free (Pb-free) termination finish and its associated reflow profile are acceptable for the target assembly process.
Channel Count and Configuration
High match
Package Type and Pinout
High match
On-Resistance and Switch Characteristics
High match
Termination Finish and RoHS Compliance
Validation required
Parts at a glance
Part B
ADG732BSU
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 9102 Stückzahl
- Package
- TQFP-48
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADG732BSUZ | ADG732BSU | Why it matters |
|---|---|---|---|
| Number of Channels | 32 | 32 | Determines how many signal lines the multiplexer can switch; must match the system's channel count. |
| Switch Configuration | 32:1 Multiplexer | 32:1 Multiplexer | Defines the mux topology; both must be 32-to-1 for direct functional substitution. |
| On-State Resistance (RON) | 4 Ω (typical) | 4 Ω (typical) | Lower RON reduces signal attenuation and voltage drop across the switch; matching values preserve signal integrity. |
| 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 | Must be compatible with the system power rails for correct operation and level compatibility. |
| Package / Mounting | 48-TQFP (7x7), Surface Mount | 48-TQFP (7x7), Surface Mount | Footprint and mounting must match the PCB layout for drop-in replacement. |
| RoHS / Lead-Free Status | RoHS Compliant, Lead-Free | Non-RoHS, Contains Lead | Affects regulatory compliance and solder process; the "Z" suffix denotes the lead-free/RoHS variant. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Must cover the application's ambient conditions for reliable operation. |
| Channel-to-Channel Matching | 0.5 Ω (typical) | 0.5 Ω (typical) | Tight matching minimizes gain/offset errors between channels in precision signal routing. |
| Switching Time (tON/tOFF) | 23 ns / 16 ns (typical) | 23 ns / 16 ns (typical) | Determines maximum switching speed and settling behavior in multiplexed acquisition systems. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG732BSUZ | ADG732BSU |
|---|---|---|
| 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 is the difference between ADG732BSUZ and ADG732BSU?
The ADG732BSUZ and ADG732BSU refer to the same Analog Devices 32-channel CMOS analog multiplexer; the "Z" suffix denotes RoHS-compliant lead-free packaging (per Analog Devices ordering guide), while the non-Z version is the older non-RoHS leaded package variant. Functionally and electrically they are the same device.
Are ADG732BSUZ and ADG732BSU electrically and functionally identical?
Yes. Both are the ADG732 32-to-1 CMOS analog multiplexer with the same channel count, on-resistance, supply range, and control interface. The only documented difference is the package/lead finish (RoHS-compliant vs non-RoHS), not the electrical specification.
Can ADG732BSUZ be used as a drop-in replacement for ADG732BSU?
Yes, provided the PCB assembly process accepts the RoHS lead-free finish. Both are offered in the same 48-lead TQFP (SU) package with identical pinout, so the footprint and pin functions are compatible; the substitution is a lead-finish/ordering-code change, not a functional change.
What package do ADG732BSUZ and ADG732BSU use?
Both devices are supplied in the 48-lead TQFP package, indicated by the "SU" suffix in the part number. The "Z" in ADG732BSUZ designates the RoHS-compliant version of that same TQFP package.
Does the "Z" suffix affect the electrical specifications of the ADG732?
No. Per Analog Devices, the "Z" suffix indicates RoHS compliance (lead-free) and does not change the device's electrical parameters. On-resistance, leakage, switching times, and supply requirements remain as specified in the ADG732 datasheet for both variants.
Which variant should be selected for a new RoHS-compliant design?
ADG732BSUZ should be selected for new designs requiring RoHS compliance, since it is the lead-free, RoHS-compliant ordering variant. ADG732BSU is the legacy non-RoHS version and is generally not appropriate for new RoHS-restricted products.
Are ADG732BSUZ and ADG732BSU interchangeable in existing assemblies?
They are pin-compatible in the same 48-lead TQFP package, so ADG732BSUZ can generally replace ADG732BSU where RoHS lead-free assembly is acceptable. Any change should still be validated against the manufacturer datasheet and the specific assembly/qualification requirements of the design.