Part A
ADG412BRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 3993 Stückzahl
- Package
- TSSOP-16
- Series
- Schnittstelle für analoge Schalter, Multiplexer, Demultiplexer
Replacement verdict
Compatible functional replacement candidate
The ADG412BRUZ and ADG411BRU are functionally compatible analog switches from the same ADG41x family, sharing identical package, pinout, supply, and signal range characteristics. The primary distinction is the switch control logic: the ADG412BRUZ is a normally open (NO) device while the ADG411BRU is a normally closed (NC) device, so the replacement is valid only when the control-logic polarity is accounted for in the target design.
Package Type
High match
Pin Configuration
High match
Supply Voltage Range
High match
Switch Control Logic
Validation required
Parts at a glance
Part B
ADG411BRU
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4086 Stückzahl
- Package
- TSSOP-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 | ADG412BRUZ | ADG411BRU | Why it matters |
|---|---|---|---|
| Switch Configuration | 4 x SPST (Normally Open) | 4 x SPST (Normally Closed) | Determines the default conduction state of each switch when the control logic is low; NO vs NC changes the logic polarity required for the same circuit function. |
| Number of Channels | 4 | 4 | Channel count must match to preserve signal routing capacity in the target design. |
| On-Resistance (RON) | 35 Ω (typ) | 35 Ω (typ) | On-resistance affects 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 for the switch to operate correctly and safely. |
| Package / Mounting | 16-TSSOP (surface mount) | 16-TSSOP (surface mount) | Identical package and footprint allow drop-in board replacement without layout changes. |
| Channel-to-Channel Matching | 0.5 Ω (typ) | 0.5 Ω (typ) | Matching between channels affects differential signal integrity and gain consistency across channels. |
| Switching Time (tON/tOFF) | 110 ns / 90 ns (typ) | 110 ns / 90 ns (typ) | Switching speed determines timing behavior in multiplexing and signal-gating applications. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Temperature range must meet the application environment for reliable operation. |
| Logic Input Compatibility | TTL/CMOS compatible | TTL/CMOS compatible | Control input compatibility ensures the switch can be driven directly by standard digital logic. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG412BRUZ | ADG411BRU |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Obsolete |
| Switch Circuit | SPST - NO | SPST - NC |
| Multiplexer / Demultiplexer Circuit | 1:1 | 1:1 |
| Number of Circuits | 4 | 4 |
| On - State Resistance(Max) | 35Ohm | 35Ohm |
| Voltage - Supply, Single (V+) | 12V | 12V |
| Voltage - Supply, Dual (V±) | ±15V | ±15V |
| Switch Time(Ton Toff)(Max) | 175ns, 145ns | 175ns, 145ns |
| Charge Injection | 5pC | 5pC |
| Channel Capacitance(CS(off)CD(off)) | 9pF, 9pF | 9pF, 9pF |
| Current - Leakage(IS(off))(Max) | 250pA | 250pA |
| Crosstalk | -85dB @ 1MHz | -85dB @ 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 key differences between the ADG412BRUZ and ADG411BRU?
The ADG412BRUZ and ADG411BRU are both quad SPST analog switches from Analog Devices, but they differ in switch configuration and package. The ADG412BRUZ features four normally open (NO) switches, while the ADG411BRU features four normally closed (NC) switches. The ADG412BRUZ is supplied in a 16-lead TSSOP package (RU suffix), whereas the ADG411BRU is supplied in a 16-lead TSSOP package as well (RU suffix), but the switch logic state differs. Both are specified for ±15 V dual-supply operation with low on-resistance.
Are the ADG412BRUZ and ADG411BRU pin-compatible?
Yes, both devices are offered in the same 16-lead TSSOP (RU) package and share the same pinout. However, because the ADG412BRUZ provides normally open switches and the ADG411BRU provides normally closed switches, the digital control logic and default power-up state differ, so a direct drop-in replacement requires verifying the system's default-state requirements.
What is the difference between normally open and normally closed switches in these parts?
The ADG412BRUZ contains four normally open (NO) SPST switches, meaning each switch is open (non-conducting) when the control input is logic low and closes when the control input is logic high. The ADG411BRU contains four normally closed (NC) SPST switches, meaning each switch is closed (conducting) when the control input is logic low and opens when the control input is logic high. This default-state difference is critical in power-up and fail-safe designs.
What supply voltage range do the ADG412BRUZ and ADG411BRU support?
Both devices are designed for dual-supply operation, typically ±15 V, and also support single-supply operation. According to Analog Devices datasheets, the ADG411/ADG412 family operates from dual supplies of ±15 V (with a specified range of ±10 V to ±15 V for dual-supply use) and single supplies of +12 V. Designers should confirm the exact specified limits in the current manufacturer datasheet before use.
What is the on-resistance of the ADG412BRUZ and ADG411BRU?
Both the ADG412BRUZ and ADG411BRU are specified with low on-resistance, typically around 35 Ω maximum at ±15 V dual supply according to Analog Devices datasheet values for the ADG411/ADG412 family. On-resistance is matched between switches and flat over the analog signal range, making these parts suitable for precision signal switching.
Can the ADG412BRUZ and ADG411BRU be used in single-supply applications?
Yes, both devices support single-supply operation. The ADG411/ADG412 family is specified for single-supply operation at +12 V, and the digital control inputs are compatible with standard CMOS/TTL logic levels. When operating single-supply, the analog signal range is referenced to ground and the positive supply, so the switch configuration (NO vs NC) must be matched to the application's default-state requirement.
What are the typical applications for the ADG412BRUZ versus the ADG411BRU?
Both parts are used in signal routing, data acquisition, sample-and-hold circuits, and communication systems. The ADG412BRUZ (normally open) is often chosen where switches should remain disconnected until actively enabled, while the ADG411BRU (normally closed) is chosen where signal paths should remain connected by default and be disconnected only when controlled. Selection depends on the required power-up and fail-safe state of the signal path.
Do the ADG412BRUZ and ADG411BRU have the same digital control interface?
Yes, both devices use standard CMOS/TTL-compatible digital control inputs to operate the switches. The logic threshold and input current specifications are common across the ADG411/ADG412 family. The functional difference is only in the switch default state (NO for ADG412BRUZ, NC for ADG411BRU), not in the electrical interface of the control pins.