Part A
ADG453BR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5833 Stückzahl
- Package
- SOIC-16
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Replacement verdict
Compatible functional replacement candidate
The ADG451BRZ and ADG453BR are both quad SPST CMOS analog switches from Analog Devices sharing the same 16-lead SOIC footprint and ±15 V dual-supply architecture, making the ADG453BR a viable functional substitute for the ADG451BRZ in most switching applications. Designers should confirm the lower on-resistance and reduced charge-injection requirements of their circuit against the ADG453BR's slightly higher RON and verify the normally-open versus normally-closed channel configuration before committing to a drop-in replacement.
Switch Configuration
High match
Package Type
High match
On-Resistance
Validation required
Charge Injection
Validation required
Parts at a glance
Part B
ADG451BRZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3269 Stückzahl
- Package
- SOIC-16
- 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 | ADG451BRZ | ADG453BR | Why it matters |
|---|---|---|---|
| Switch Configuration | 4 x SPST (Normally Closed) | 4 x SPST (Normally Open) | Determines the default conduction state at power-up; NC vs NO changes the logic of the control signal and the fail-safe behavior of the circuit. |
| Number of Channels | 4 | 4 | Channel count must match the signal paths being switched for a drop-in functional replacement. |
| On-Resistance (R_ON) | 4 Ω (typ) | 4 Ω (typ) | Low on-resistance minimizes signal attenuation and voltage drop; matching values preserve analog accuracy. |
| Supply Voltage Range | ±4.5 V to ±20 V dual, or 4.5 V to 40 V single | ±4.5 V to ±20 V dual, or 4.5 V to 40 V single | The supply range must cover the system rails to ensure proper operation and signal headroom. |
| On-Resistance Flatness | 0.5 Ω (typ) | 0.5 Ω (typ) | Flat R_ON over the signal range reduces distortion in precision analog signal switching. |
| Switching Time (t_ON / t_OFF) | 70 ns / 60 ns (typ) | 70 ns / 60 ns (typ) | Switching speed affects timing in multiplexing and sample-and-hold applications; matching values preserve timing behavior. |
| Leakage Current (I_OFF / I_ON) | 0.1 nA (typ) | 0.1 nA (typ) | Low leakage preserves accuracy in high-impedance circuits and reduces offset errors. |
| Package | 16-Lead SOIC (Narrow) | 16-Lead SOIC (Narrow) | Identical package and pinout allow direct board-level substitution without layout changes. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ratings ensure equivalent reliability across the application's environmental conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG453BR | ADG451BRZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Switch Circuit | SPST - NO/NC | SPST - NC |
| Multiplexer / Demultiplexer Circuit | 1:1 | 1:1 |
| Number of Circuits | 4 | 4 |
| On - State Resistance(Max) | 5Ohm | 5Ohm |
| Channel - to - Channel Matching(ΔRon) | 100mOhm | 100mOhm |
| Voltage - Supply, Single (V+) | 12V | 12V |
| Voltage - Supply, Dual (V±) | ±4.5V ~ 20V | ±4.5V ~ 20V |
| Switch Time(Ton Toff)(Max) | 180ns, 140ns | 180ns, 140ns |
| Charge Injection | 20pC | 20pC |
| Channel Capacitance(CS(off)CD(off)) | 37pF, 37pF | 37pF, 37pF |
| Current - Leakage(IS(off))(Max) | 500pA | 500pA |
| Crosstalk | -90dB @ 1MHz | -90dB @ 1MHz |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What are the primary differences between the ADG451BRZ and the ADG453BR?
The ADG451BRZ is a quad single-pole single-throw (SPST) switch with normally closed (NC) contacts, while the ADG453BR is a quad SPST switch with normally open (NO) contacts. Both are members of the Analog Devices ADG451/ADG452/ADG453 family of low on-resistance CMOS switches, but they differ in their switch logic state and operating temperature range specifications.
Are the ADG451BRZ and ADG453BR pin-compatible?
Yes. Both devices are offered in the same 16-lead SOIC package and share an identical pinout, with the only functional difference being the normally closed versus normally open contact configuration. This allows a designer to change switch logic state by substituting one part for the other on the same PCB footprint.
What is the on-resistance of the ADG451BRZ and ADG453BR?
Both the ADG451BRZ and ADG453BR feature a low on-resistance of typically 4 Ω (maximum 5 Ω) at ±15 V dual supplies, making them suitable for precision signal switching and low-distortion applications.
What supply voltage ranges do the ADG451BRZ and ADG453BR support?
Both devices operate from dual supplies of ±4.5 V to ±20 V or a single supply of 4.5 V to 40 V. This wide operating range allows use in both bipolar analog signal chains and single-supply systems.
Do the ADG451BRZ and ADG453BR have the same switching speed?
Yes. Both parts share the same switching characteristics, with typical turn-on time (tON) of 90 ns and turn-off time (tOFF) of 80 ns, along with break-before-make switching action that prevents momentary shorting between channels during transitions.
What is the difference in operating temperature range between the ADG451BRZ and ADG453BR?
The ADG451BRZ is specified over the industrial temperature range of −40 °C to +85 °C, while the ADG453BR is specified over the extended temperature range of −40 °C to +125 °C. Designers should select the version whose rated temperature range covers the application's worst-case ambient conditions.
Can the ADG451BRZ and ADG453BR be used interchangeably in an existing design?
They can be interchanged only if the control logic polarity is accounted for, because the ADG451BRZ is normally closed (conducts with a logic low input) and the ADG453BR is normally open (conducts with a logic high input). The PCB footprint and package are identical, but the firmware or control circuitry must be verified to ensure the correct switch state is commanded for the intended signal path.