Part A
ADG732BSUZ
Công ty Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2381 PCS
- Package
- TQFP-48
- Series
- Interface - Analog Switches, Multiplexers, Demultiplexers
Replacement verdict
Compatible functional replacement candidate
The ADG732BSUZ and ADG731BSU are functionally compatible CMOS analog multiplexers from the same family, sharing identical package, supply, and control interfaces, with the primary distinction being channel count (32:1 versus 16:1 dual). The ADG731BSU can serve as a functional substitute where reduced channel count is acceptable, but the ADG732BSUZ is not a direct drop-in replacement for designs requiring the full 32-channel capacity.
Package Type
High match
Supply Voltage Range
High match
Channel Count
Validation required
Control Interface
High match
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 | ADG731BSU | 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; 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 | Identical supply flexibility allows the parts to be used in the same system rails without redesign. |
| Package / Mounting | 48-TQFP (SMD) | 48-TQFP (SMD) | Same package and footprint enable drop-in board replacement without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ratings ensure equivalent environmental performance in the same application. |
| Channel-to-Channel Matching | 0.5 Ω (typ) | 0.5 Ω (typ) | Tight matching reduces differential error between channels, important for precision signal routing. |
| Switching Time (tON/tOFF) | tON 70 ns / tOFF 40 ns (typ) | tON 70 ns / tOFF 40 ns (typ) | Equivalent switching speed ensures comparable timing behavior in multiplexing applications. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG732BSUZ | ADG731BSU |
|---|---|---|
| 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 ADG732BSUZ and the ADG731BSU?
The ADG732BSUZ is a 32-channel analog multiplexer, while the ADG731BSU is a 32-to-1 channel multiplexer with a different switch configuration. Both are from Analog Devices, but the ADG732BSUZ provides 32 single-ended channels (dual 16-channel or single 32-channel multiplexing), whereas the ADG731BSU is a 32-to-1 multiplexer. The ADG732BSUZ is specified for dual-supply operation (±2.5 V to ±2.75 V) or single-supply operation (2.5 V to 5.5 V), and the ADG731BSU has similar supply requirements. Package and pinout differences must be verified in the respective datasheets before substitution.
Are the ADG732BSUZ and ADG731BSU pin-compatible?
No verified public data confirms pin compatibility between the ADG732BSUZ and ADG731BSU. The ADG732BSUZ is offered in a 48-lead TQFP package, and the ADG731BSU is offered in a 48-lead TQFP package as well, but pin functions and channel addressing differ between the two devices. Designers must compare the pin configurations in the official Analog Devices datasheets before considering any replacement.
What are the on-resistance specifications for these multiplexers?
According to Analog Devices datasheets, the ADG732BSUZ has an on-resistance of approximately 4 Ω typical at ±2.5 V dual supply, and the ADG731BSU has an on-resistance of approximately 4 Ω typical under similar conditions. On-resistance flatness and matching should be verified in the respective datasheets for the specific supply voltage and temperature range of the application.
What supply voltage ranges do the ADG732BSUZ and ADG731BSU support?
Both devices operate from dual supplies of ±2.5 V to ±2.75 V or a single supply of 2.5 V to 5.5 V, per Analog Devices datasheets. The absolute maximum ratings and recommended operating conditions should be confirmed in the official datasheets before use in any design.
What are the switching times for the ADG732BSUZ and ADG731BSU?
Analog Devices datasheets specify transition times on the order of tens of nanoseconds for both the ADG732BSUZ and ADG731BSU, with typical values around 30 ns to 40 ns depending on supply voltage and load conditions. Exact tON and tOFF values should be taken from the respective datasheets for the intended operating conditions.
Can the ADG732BSUZ and ADG731BSU be used in multiplexing applications requiring 32 channels?
Yes. The ADG732BSUZ provides 32 single-ended channels and can be configured as a 32-to-1 multiplexer or dual 16-to-1 multiplexer. The ADG731BSU is a 32-to-1 multiplexer. Both are suitable for 32-channel multiplexing, but the channel addressing scheme and control logic differ, so the digital interface must be matched to the selected device.
What are the operating temperature ranges for these devices?
Both the ADG732BSUZ and ADG731BSU are specified for the industrial temperature range of −40 °C to +85 °C, per Analog Devices datasheets. The exact temperature specifications and any derating requirements should be confirmed in the official datasheets.