Part A
ADG452BR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6146 PCS
- Package
- SOIC-16
- Series
- Interface - Analog Switches, Multiplexers, Demultiplexers
Replacement verdict
Compatible functional replacement candidate
The ADG451BRZ and ADG452BR are functionally compatible quad SPST CMOS analog switches sharing the same 16-lead SOIC footprint, ±15 V dual-supply operation, and low on-resistance characteristics, making the ADG452BR a viable functional replacement candidate for the ADG451BRZ in most switching applications. Designers should validate the differing switch configuration (normally closed versus normally open) and the lower on-resistance of the ADG452BR against their specific signal-path requirements before final qualification.
Switch Configuration
Validation required
Package Type
High match
Supply Voltage Range
High match
On-Resistance
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 | ADG451BRZ | ADG452BR | Why it matters |
|---|---|---|---|
| Switch Configuration | 4 x SPST (Normally Closed) | 4 x SPST (Normally Open) | Determines the default conduction state of each switch at power-up; NC vs NO changes the logic and fail-safe behavior of the circuit. |
| On-Resistance (RON) | 4 Ω (typ) | 4 Ω (typ) | Low on-resistance minimizes signal attenuation and voltage drop across the switch, critical for precision analog signal routing. |
| 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 | Defines the operating window of the device; matching ranges allow direct substitution in the same power rail design. |
| Number of Channels | 4 | 4 | Channel count must match to preserve the signal routing capacity of the existing circuit layout. |
| Package / Mounting | 16-Lead SOIC (Surface Mount) | 16-Lead SOIC (Surface Mount) | Identical package and footprint enable drop-in board replacement without layout changes. |
| Logic Control Interface | TTL/CMOS compatible | TTL/CMOS compatible | Compatible logic thresholds ensure the switch can be driven by the same digital control signals. |
| Switch State at Logic 0 | Closed (conducting) | Open (non-conducting) | Inverts the control logic relationship; a direct swap changes which state the switch assumes for a given input, affecting system behavior. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Matching temperature ratings confirm both parts suit the same environmental and reliability requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG452BR | ADG451BRZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Switch Circuit | SPST - NO | 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 main differences between the ADG451BRZ and the ADG452BR?
The ADG451BRZ and ADG452BR are both quad SPST analog switches from Analog Devices, but they differ in switch configuration and package. The ADG451BRZ features four normally closed (NC) switches in a 16-lead SOIC package, while the ADG452BR features four normally open (NO) switches in a 16-lead SOIC package. Both are specified for dual-supply operation and offer low on-resistance.
Are the ADG451BRZ and ADG452BR pin-compatible?
No. Although both devices are housed in a 16-lead SOIC package, the ADG451BRZ provides normally closed switches and the ADG452BR provides normally open switches, so the switch logic and corresponding pin functions differ. They are not direct drop-in replacements for each other without verifying the switch state requirements of the target design.
What supply voltage range do the ADG451BRZ and ADG452BR support?
Both devices are designed for dual-supply operation with a typical range of ±4.5 V to ±20 V, and they can also operate from a single supply of approximately 4.5 V to 40 V. Designers should confirm the exact limits in the respective Analog Devices datasheets for the specific grade and operating conditions.
What is the on-resistance of the ADG451BRZ and ADG452BR?
Both the ADG451BRZ and ADG452BR are specified with low on-resistance, typically in the range of a few ohms (approximately 4 Ω to 5 Ω typical) depending on supply voltage and signal level. The exact maximum on-resistance should be taken from the manufacturer datasheet for the B-grade devices.
Can the ADG451BRZ and ADG452BR be used in single-supply applications?
Yes. Both devices support single-supply operation in addition to dual-supply operation, making them suitable for a range of signal-switching applications. The applicable single-supply range and associated parameters should be verified against the Analog Devices datasheet for each part.
What are the typical applications for the ADG451BRZ and ADG452BR?
These quad SPST analog switches are commonly used in signal routing, data acquisition systems, sample-and-hold circuits, audio and video switching, and automatic test equipment. The choice between the ADG451BRZ (normally closed) and ADG452BR (normally open) depends on the required default switch state in the target system.
Do the ADG451BRZ and ADG452BR have the same switching speed and charge injection characteristics?
Both devices belong to the same Analog Devices switch family and share similar switching characteristics, including fast switching times and low charge injection. However, designers should compare the specific datasheet parameters for the B-grade versions of each part to confirm timing and charge-injection values for their application.