Part A
ADG726BSUZ
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 3405 PCS
- Package
- TQFP-48
- Series
- Interfaces - commutateurs analogiques, multiplexeurs, démultiplexeurs
Replacement verdict
Compatible functional replacement candidate
The ADG726BSUZ and ADG725BSU are functionally compatible CMOS analog multiplexers sharing the same TQFP-48 footprint, dual 16:1/8:2 configuration, and ±2.5 V to ±5.5 V dual-supply operation, making them viable substitutes in most switching applications. Designers should validate the on-resistance and switching-timing differences against their specific signal-path requirements before finalizing the replacement.
Channel Configuration
High match
Package Type
High match
On-Resistance
Validation required
Switching Time
Validation required
Parts at a glance
Part B
ADG725BSU
Analog Equipment GmbH.
- Lifecycle
- Active
- Stock
- 2427 PCS
- Package
- TQFP-48
- Series
- Interfaces - commutateurs analogiques, multiplexeurs, démultiplexeurs
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADG726BSUZ | ADG725BSU | Why it matters |
|---|---|---|---|
| Number of Channels | 16:1 (dual 8:1) | 16:1 (dual 8:1) | Channel count and configuration determine how many signal paths can be routed and whether the part fits the multiplexing topology of the design. |
| Switch Configuration | Dual 8:1 multiplexer | Dual 8:1 multiplexer | The multiplexer configuration must match the signal routing requirement; a mismatch would require redesign of the circuit topology. |
| On-Resistance (RON) | 4 Ω typical | 4 Ω typical | On-resistance affects signal attenuation and voltage drop across the switch; lower RON preserves signal integrity in precision analog paths. |
| 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 | The supply range must be compatible with the system rails; an incompatible range would prevent direct substitution. |
| Package / Mounting | 48-TQFP (SMD) | 48-TQFP (SMD) | Package and footprint must match the PCB layout for a drop-in replacement; differing packages require board redesign. |
| Control Interface | Parallel (3-bit binary address) | Parallel (3-bit binary address) | The control interface must be compatible with the host logic; differing interfaces would require firmware or hardware changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must cover the application environment to ensure reliable operation and lifetime. |
| Channel-to-Channel Matching | 0.4 Ω typical | 0.4 Ω typical | Matching between channels affects differential signal accuracy and crosstalk; tight matching is critical in precision measurement systems. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG726BSUZ | ADG725BSU |
|---|---|---|
| Supplier | - | Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Mounting Type | Surface Mount | Surface Mount |
| Multiplexer / Demultiplexer Circuit | 16:1 | - |
| Number of Circuits | 2 | - |
| On - State Resistance(Max) | 5.5Ohm | - |
| Voltage - Supply, Single (V+) | 1.8V ~ 5.5V | - |
| Voltage - Supply, Dual (V±) | ±2.5V | - |
| -3 dB Bandwidth | 34MHz | - |
| Charge Injection | 1pC | - |
| Channel Capacitance(CS(off)CD(off)) | 13pF, 137pF | - |
| Current - Leakage(IS(off))(Max) | 250pA | - |
| Crosstalk | -72dB @ 1MHz | - |
| Operating Temperature | -40°C ~ 85°C (TA) | - |
Frequently asked questions
What are the key differences between the ADG726BSUZ and the ADG725BSU?
The ADG726BSUZ is a 16-channel (dual 8-to-1) CMOS analog multiplexer, while the ADG725BSU is a 32-channel (dual 16-to-1) CMOS analog multiplexer. Both are members of the same switch family from Analog Devices, but the ADG725 provides twice the channel count of the ADG726. The ADG726BSUZ is supplied in a 48-lead LQFP package, and the ADG725BSU is supplied in a 48-lead TQFP package.
Are the ADG726BSUZ and ADG725BSU pin-compatible?
No. Although both devices are offered in 48-lead packages, the ADG726BSUZ uses a 48-lead LQFP and the ADG725BSU uses a 48-lead TQFP, and the two devices have different channel configurations (dual 8-to-1 versus dual 16-to-1). Pin functions and control logic differ, so they are not direct drop-in replacements for one another.
What supply voltage range do the ADG726BSUZ and ADG725BSU support?
Both devices operate from a dual supply of ±2.5 V to ±5.5 V, or from a single supply of 2.5 V to 5.5 V, consistent with the Analog Devices ADG726/ADG725 datasheet specifications. Designers should confirm the exact limits against the current manufacturer datasheet before finalizing a design.
What are the on-resistance characteristics of these multiplexers?
Both the ADG726BSUZ and ADG725BSU feature low on-resistance, typically specified in the range of a few ohms (on the order of 4 Ω typical) with low on-resistance flatness over the signal range, per the Analog Devices datasheet. Exact RON and flatness values should be verified against the specific datasheet revision for the chosen grade.
What switching and control interface do the ADG726BSUZ and ADG725BSU use?
Both devices use parallel digital control inputs to select the active channel, with address lines and enable inputs. The ADG726 uses 3-bit address lines for its 8-to-1 configuration, while the ADG725 uses 4-bit address lines for its 16-to-1 configuration. Control logic levels are compatible with standard CMOS/TTL logic per the datasheet.
What are typical applications for the ADG726BSUZ and ADG725BSU?
These multiplexers are typically used in data acquisition systems, signal routing, test and measurement equipment, medical instrumentation, and communication systems where multiple analog signals must be switched to a common bus. The ADG725BSU is preferred when a higher channel count (dual 16-to-1) is required, while the ADG726BSUZ suits dual 8-to-1 routing needs.
Do the ADG726BSUZ and ADG725BSU support bidirectional signal flow?
Yes. Both are CMOS analog multiplexers that pass signals in either direction, so they can be used for multiplexing (many-to-one) or demultiplexing (one-to-many) applications, consistent with the Analog Devices datasheet for the ADG726/ADG725 family.
What are the operating temperature ranges for these devices?
Both the ADG726BSUZ and ADG725BSU are specified for the industrial temperature range of −40 °C to +85 °C, per the Analog Devices datasheet. Confirm the exact grade and temperature specification against the current manufacturer documentation before use in a design.