Part A
ADG408BRZ
ADI公司
- Lifecycle
- Active
- Stock
- 1995 件
- Package
- SOIC-16
- Series
- 介面-類比開關、多工器、解復用器
Replacement verdict
Compatible functional replacement candidate
The ADG408BRZ and ADG408BR are functionally equivalent 8-channel analog multiplexers sharing the same CMOS switch architecture, pinout, and TTL/CMOS-compatible logic interface. The BRZ suffix denotes RoHS-compliant packaging, which is the primary differentiator; both parts are interchangeable in existing designs where lead-free compliance is acceptable, with no change to electrical performance or footprint.
Channel Configuration
High match
Package and Pinout
High match
On-Resistance and Supply Range
High match
RoHS Compliance
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 | ADG408BRZ | ADG408BR | Why it matters |
|---|---|---|---|
| Package / Mounting | 16-Lead SOIC (R-16), surface mount | 16-Lead SOIC (R-16), surface mount | Same footprint and mounting style allows drop-in board replacement. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free (Z suffix) | Non-RoHS, contains lead (no Z suffix) | The Z suffix denotes lead-free/RoHS construction; this affects regulatory compliance and solder process compatibility. |
| Number of Channels | 8:1 multiplexer (single 8-channel) | 8:1 multiplexer (single 8-channel) | Channel count determines how many signals can be routed and must match for functional equivalence. |
| Switch Configuration | 8-to-1 multiplexer | 8-to-1 multiplexer | The multiplexer topology must match to preserve circuit function. |
| On-Resistance (typ) | 100 Ω | 100 Ω | On-resistance affects signal attenuation and accuracy; identical values ensure equivalent performance. |
| Supply Voltage Range | ±15 V dual (or +12 V single) | ±15 V dual (or +12 V single) | Supply range must match the system rails for proper operation and signal headroom. |
| Channel-to-Channel Matching | ΔRON 5 Ω typ | ΔRON 5 Ω typ | Matching between channels affects differential accuracy in multiplexed signal paths. |
| Switching Time (tON/tOFF) | ~250 ns / ~150 ns typ | ~250 ns / ~150 ns typ | Switching speed determines maximum multiplexing rate and settling behavior. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must cover the application environment for reliable operation. |
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 | ADG408BRZ | ADG408BR |
|---|---|---|
| Part Status | Active | Obsolete |
| Multiplexer / Demultiplexer Circuit | 8:1 | 8:1 |
| Number of Circuits | 1 | 1 |
| On - State Resistance(Max) | 100Ohm | 100Ohm |
| Channel - to - Channel Matching(ΔRon) | 15Ohm (Max) | 15Ohm (Max) |
| Voltage - Supply, Single (V+) | 12V | 12V |
| Voltage - Supply, Dual (V±) | ±15V | ±15V |
| Charge Injection | 20pC | 20pC |
| Channel Capacitance(CS(off)CD(off)) | 11pF, 40pF | 11pF, 40pF |
| Current - Leakage(IS(off))(Max) | 500pA | 500pA |
| Crosstalk | -85dB @ 100kHz | -85dB @ 100kHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between the ADG408BRZ and the ADG408BR?
The ADG408BRZ and ADG408BR are both 8-channel analog multiplexers from Analog Devices. The primary difference is the package and lead finish: the ADG408BRZ is supplied in a 16-lead SOIC package with a lead-free, RoHS-compliant matte tin finish, while the ADG408BR is the older non-RoHS version of the same device in the same 16-lead SOIC package with a standard tin-lead finish. Both share the same electrical specifications and functional behavior.
Are the ADG408BRZ and ADG408BR electrically identical?
Yes. Both parts are the same ADG408 multiplexer die and share identical datasheet parameters, including on-resistance, channel-to-channel matching, leakage current, switching times, and supply voltage range. The only documented differences are the package lead finish and RoHS compliance status.
Can the ADG408BRZ be used as a drop-in replacement for the ADG408BR?
Yes, in most cases. Both devices use the same 16-lead SOIC package with identical pinout and footprint, so the ADG408BRZ can directly replace the ADG408BR on an existing PCB. The ADG408BRZ is the RoHS-compliant successor, so designs requiring lead-free assembly should use the BRZ version.
What is the supply voltage range for the ADG408BRZ and ADG408BR?
Both devices operate from dual supplies of ±5 V to ±20 V, or from a single supply of 12 V to 44 V. The ADG408 is specified for operation over the extended industrial temperature range of −40 °C to +85 °C.
What are the key on-resistance specifications of the ADG408BRZ and ADG408BR?
Both parts feature a maximum on-resistance of 100 Ω over the full temperature range, with on-resistance matching between channels of 5 Ω maximum and on-resistance flatness of 10 Ω maximum. These specifications are identical for the BRZ and BR versions.
Do the ADG408BRZ and ADG408BR differ in switching speed?
No. Both devices have the same switching characteristics: typical turn-on time of 150 ns and turn-off time of 100 ns, with break-before-make switching action. These parameters are common to both the BRZ and BR versions.
Which version should be selected for a new RoHS-compliant design?
The ADG408BRZ should be selected for new designs. It is the RoHS-compliant, lead-free version in the 16-lead SOIC package, while the ADG408BR is the legacy non-RoHS version. Using the BRZ version ensures compliance with current environmental regulations and avoids lead-containing assembly processes.