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 ADG411BRUZ and ADG412BRUZ are functionally interchangeable CMOS analog switches from the same ADG41x family, sharing identical package, pinout, supply range, and switch architecture. The only meaningful distinction is the digital control-logic polarity, so the ADG412BRUZ can serve as a direct functional substitute for the ADG411BRUZ provided the surrounding control circuitry is verified against the inverted logic threshold behavior.
Switch Configuration
High match
Package and Pinout
High match
On-Resistance and Supply Range
High match
Digital Control Logic Polarity
Validation required
Parts at a glance
Part B
ADG411BRUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 1595 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 | ADG411BRUZ | ADG412BRUZ | Why it matters |
|---|---|---|---|
| Switch Configuration | 4 x SPST (Normally Closed) | 4 x SPST (Normally Open) | Determines the default conduction state of each switch when the control logic is unpowered or in its inactive state, which is critical for fail-safe and power-up behavior in a circuit. |
| Number of Switches | 4 | 4 | Defines how many independent signal channels can be routed through a single package, affecting board space and channel count in multiplexing designs. |
| On-Resistance (RON) | 35 Ω (typ) | 35 Ω (typ) | Lower on-resistance reduces signal attenuation and voltage drop across the switch, which is important for preserving signal integrity in precision analog paths. |
| 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 | Determines compatibility with the system power rails and the allowable analog signal swing the switch can handle without clipping or damage. |
| Logic Input Threshold (VINH) | 2.0 V (min) | 2.0 V (min) | Specifies the minimum control voltage guaranteed to toggle the switch, ensuring reliable interfacing with the driving logic family (e.g., TTL/CMOS). |
| Switching Time (tON/tOFF) | 110 ns / 90 ns (typ) | 110 ns / 90 ns (typ) | Governs how fast the switch can transition between states, which affects achievable signal bandwidth and timing accuracy in sampled or multiplexed systems. |
| Charge Injection | 20 pC (typ) | 20 pC (typ) | Charge coupled into the signal path during switching causes glitches; low charge injection is essential for accurate sample-and-hold and high-resolution data acquisition. |
| Off Isolation | 68 dB (typ at 1 MHz) | 68 dB (typ at 1 MHz) | Indicates how well the switch blocks signal leakage between channels when open, which is critical for crosstalk-free multiplexing of sensitive signals. |
| Package | 16-Lead TSSOP | 16-Lead TSSOP | Confirms physical footprint and pinout compatibility, allowing the two parts to be drop-in replacements on the same PCB layout. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Ensures the device meets performance specifications across the intended application environment, from industrial to consumer temperature conditions. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG412BRUZ | ADG411BRUZ |
|---|---|---|
| Part Status | Active | Active |
| 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 is the primary difference between the ADG411BRUZ and ADG412BRUZ?
The ADG411BRUZ and ADG412BRUZ are both quad SPST analog switches from Analog Devices, but they differ in their switch action. The ADG411BRUZ has normally closed (NC) switches, while the ADG412BRUZ has normally open (NO) switches. Both are fabricated on a CMOS process and are pin-compatible in the same TSSOP-16 package.
Are the ADG411BRUZ and ADG412BRUZ pin-compatible?
Yes. Both devices are offered in the same 16-lead TSSOP (RU-16) package and share an identical pinout. The difference is internal switch configuration (NC vs NO), so the PCB land pattern and pin functions are the same, but the logic-to-switch-state relationship differs.
What are the key analog switch specifications common to both devices?
Both the ADG411BRUZ and ADG412BRUZ feature low on-resistance (typically 35 Ω), low leakage currents, and operate from dual supplies of ±15 V or single supplies of +12 V. They offer fast switching times (tON/tOFF typically 110 ns/70 ns) and are specified for the industrial temperature range of −40 °C to +85 °C.
Can the ADG411BRUZ be used as a drop-in replacement for the ADG412BRUZ?
Not directly. Although the packages and pinouts are identical, the switch logic is inverted: the ADG411BRUZ is normally closed, while the ADG412BRUZ is normally open. A direct substitution would invert the signal path behavior, so the control logic and system default state must be validated before replacement.
What supply voltages do the ADG411BRUZ and ADG412BRUZ support?
Both devices are specified for dual-supply operation of ±15 V (with a range of ±13.5 V to ±16.5 V) and single-supply operation of +12 V. They also support logic-compatible control inputs, allowing direct interfacing with TTL and CMOS logic levels.
What is the on-resistance of the ADG411BRUZ and ADG412BRUZ?
Both the ADG411BRUZ and ADG412BRUZ exhibit a typical on-resistance of 35 Ω with a maximum specified value of 70 Ω over the industrial temperature range. On-resistance flatness is typically 5 Ω, ensuring consistent signal transmission across the analog input range.
In which applications are the ADG411BRUZ and ADG412BRUZ typically used?
These quad SPST switches are commonly used in signal routing, data acquisition systems, sample-and-hold circuits, audio switching, and automatic test equipment. The ADG411BRUZ (normally closed) suits applications requiring a default connected state, while the ADG412BRUZ (normally open) suits applications requiring a default disconnected state.