Part A
ADG608BRZ
ADI公司
- Lifecycle
- Active
- Stock
- 4811 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 ADG608BRZ and ADG609BR are both 8-channel CMOS analog multiplexers from Analog Devices in a 16-lead SOIC package, sharing the same supply range, on-resistance profile, and digital interface family. The ADG609BR is a differential (4-differential channel) variant rather than a single-ended 8-to-1 mux, so it is a functional candidate only where the differential configuration is acceptable; verify channel topology and pin assignment against the target design before substitution.
Channel Configuration
Validation required
Package Type
High match
Supply Voltage Range
High match
On-Resistance
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 | ADG608BRZ | ADG609BR | Why it matters |
|---|---|---|---|
| Number of Channels | 8:1 (1 channel) | 4:1 (2 channels) | Determines how many signal paths can be switched; an 8:1 mux cannot directly replace a dual 4:1 configuration. |
| Switch Configuration | Multiplexer (8-to-1) | Multiplexer (dual 4-to-1) | The topology dictates routing flexibility and PCB layout; the two parts are not pin/function equivalent. |
| On-Resistance (typ) | 30 Ω | 30 Ω | Lower on-resistance reduces signal attenuation and voltage drop across the switch. |
| Supply Voltage Range | ±5 V dual or +5 V single | ±5 V dual or +5 V single | Must match the system rail to ensure proper logic thresholds and signal swing. |
| Package | 16-lead SOIC | 16-lead SOIC | Same footprint allows drop-in board placement, though pinout function differs. |
| Switching Time (typ) | 55 ns | 55 ns | Affects maximum achievable switching frequency and settling in multiplexed systems. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Confirms suitability for industrial and extended-temperature environments. |
| Pin Count / Pinout | 16 pins (single 8:1) | 16 pins (dual 4:1) | Even with identical package size, differing pin functions prevent direct substitution without redesign. |
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 | ADG608BRZ | ADG609BR |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Switch Circuit | - | SP4T |
| Multiplexer / Demultiplexer Circuit | 8:1 | 4:1 |
| Number of Circuits | 1 | 2 |
| On - State Resistance(Max) | 30Ohm | 30Ohm |
| Channel - to - Channel Matching(ΔRon) | 5Ohm (Max) | 5Ohm (Max) |
| Voltage - Supply, Single (V+) | 3.3V ~ 5V | 3.3V ~ 5V |
| Voltage - Supply, Dual (V±) | ±5V | ±5V |
| Switch Time(Ton Toff)(Max) | 75ns, 45ns | 75ns, 45ns |
| Charge Injection | 6pC | 6pC |
| Channel Capacitance(CS(off)CD(off)) | 9pF, 40pF | 9pF, 20pF |
| 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 are the key differences between the ADG608BRZ and ADG609BR?
The ADG608BRZ is an 8-channel analog multiplexer that connects one of eight inputs to a common output, while the ADG609BR is a 4-channel differential multiplexer that switches one of four differential input pairs to a common differential output. Both are CMOS devices in a 16-lead SOIC package, but they differ in channel configuration and switching topology.
Are the ADG608BRZ and ADG609BR pin-compatible?
Both devices are offered in a 16-lead SOIC (R-16) package, but their internal switch configurations differ (single-ended 8-to-1 versus differential 4-to-1). Pin functions are not identical, so they are not direct drop-in substitutes; the PCB layout and signal routing must be reviewed against each datasheet.
What are the on-resistance specifications for these multiplexers?
Both the ADG608 and ADG609 are specified with on-resistance in the range of approximately 30 Ω to 100 Ω depending on supply voltage and temperature, per the Analog Devices datasheets. Designers should consult the specific datasheet curves for RON versus signal voltage and supply conditions.
What supply voltage ranges do the ADG608BRZ and ADG609BR support?
Both devices operate from dual supplies of ±5 V (with ±5 V being the primary specified condition) and support single-supply operation. They are specified for dual-supply operation around ±5 V and are fabricated on a CMOS process compatible with TTL/CMOS logic levels. Verify exact limits in the respective Analog Devices datasheets.
What are typical applications for the ADG608BRZ versus the ADG609BR?
The ADG608BRZ (8-to-1 single-ended) suits signal routing where multiple single-ended channels share one output, such as data acquisition front ends. The ADG609BR (4-to-1 differential) suits differential signal switching, such as balanced audio, differential sensor interfaces, and instrumentation where common-mode rejection is important.
Do both parts offer break-before-make switching?
Yes. The ADG608 and ADG609 are designed with break-before-make switching action to prevent momentary shorting between channels during transition, as documented in the Analog Devices datasheets. This is important when multiplexing signal sources that must not be shorted together.
What logic interface do the ADG608BRZ and ADG609BR use for channel selection?
Both devices use standard CMOS/TTL-compatible logic inputs for address and enable control. The ADG608 uses 3 address lines to select one of 8 channels, while the ADG609 uses 2 address lines to select one of 4 differential channel pairs. Both include an enable input for device control.