Part A
ADG409BR
Компания Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6238 ПКС
- Package
- SOIC-16
- Series
- Интерфейс - аналоговые выключатели, мультиплексоры, демультиплексоры
Replacement verdict
Compatible functional replacement candidate
The ADG409BRZ and ADG409BR are functionally equivalent CMOS analog multiplexers sharing the same dual 4-channel configuration, on-resistance profile, and 16-lead SOIC footprint. The primary distinction is package construction and material compliance, with the ADG409BRZ being the RoHS-compliant variant. Designers can treat the ADG409BRZ as a direct functional substitute for the ADG409BR in existing and new designs, subject to final validation of supply-chain and environmental compliance requirements.
Channel Configuration
High match
On-Resistance
High match
Package Type
High match
RoHS Compliance
Validation required
Parts at a glance
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | ADG409BRZ | ADG409BR | Why it matters |
|---|---|---|---|
| Number of Channels | 2 (Dual 4:1) | 2 (Dual 4:1) | Defines the multiplexer configuration; both are dual 4-to-1 multiplexers, so the switching topology is functionally identical. |
| On-Resistance (RON) | 100 Ω (typ) | 100 Ω (typ) | On-resistance affects signal attenuation and voltage drop across the switch; matching values ensure equivalent signal integrity. |
| Supply Voltage Range | ±15 V dual / +12 V single | ±15 V dual / +12 V single | Determines compatibility with the system power rails; identical ranges allow direct substitution without supply redesign. |
| Switching Time (tON/tOFF) | 150 ns / 150 ns (typ) | 150 ns / 150 ns (typ) | Switching speed impacts timing in multiplexed signal paths; equal values preserve system timing behavior. |
| Package / Mounting | 16-Lead SOIC (Surface Mount) | 16-Lead SOIC (Surface Mount) | Package and footprint must match for board-level interchangeability; both use the same 16-lead SOIC. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C (industrial) | Temperature range affects reliability in harsh environments; the Z suffix denotes the lead-free/RoHS industrial grade variant. |
| RoHS / Lead-Free Status | RoHS compliant, lead-free | Contains lead (non-RoHS) | RoHS compliance is critical for regulatory and environmental requirements; the BRZ is lead-free while the BR is not, affecting compliance-driven substitution. |
| Channel-to-Channel Crosstalk | -85 dB (typ at 1 MHz) | -85 dB (typ at 1 MHz) | Crosstalk determines signal isolation between channels; identical values ensure equivalent noise performance. |
| Off Isolation | -85 dB (typ at 1 MHz) | -85 dB (typ at 1 MHz) | Off isolation affects leakage between disconnected channels; matching values preserve signal routing fidelity. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | ADG409BR | ADG409BRZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Switch Circuit | SP4T | SP4T |
| Multiplexer / Demultiplexer Circuit | 4:1 | 4:1 |
| Number of Circuits | 2 | 2 |
| On - State Resistance(Max) | 100Ohm | 100Ohm |
| Channel - to - Channel Matching(ΔRon) | 15Ohm (Max) | 15Ohm (Max) |
| Voltage - Supply, Single (V+) | 12V | 12V |
| Voltage - Supply, Dual (V±) | ±15V | ±15V |
| Charge Injection | 20pC | 20pC |
| Channel Capacitance(CS(off)CD(off)) | 11pF, 20pF | 11pF, 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 ADG409BRZ and ADG409BR?
Both are Analog Devices CMOS analog multiplexers from the ADG409 family: 4-channel differential (8-to-1 single-ended equivalent) multiplexers with break-before-make switching, specified for dual-supply operation (typically ±15 V) and TTL/CMOS-compatible logic inputs. They are functionally identical devices; the difference is the ordering/package suffix.
What is the difference between the ADG409BRZ and ADG409BR?
The "Z" suffix in ADG409BRZ denotes RoHS-compliant, lead-free (Pb-free) packaging and construction per Analog Devices ordering conventions. ADG409BR is the non-Z (leaded) ordering variant. Both use the same 16-lead SOIC (R) package and have identical electrical specifications; the distinction is compliance/ordering code, not function or performance.
Are the ADG409BRZ and ADG409BR pin-compatible and functionally interchangeable?
Yes. Both are offered in the same 16-lead SOIC package with the same pinout and the same datasheet specifications (on-resistance, leakage, switching times, supply range, logic thresholds). They differ only in the RoHS/lead-free ordering suffix, so they are drop-in interchangeable in terms of function and footprint.
What are the key specifications of the ADG409 family?
Per the Analog Devices datasheet: 4 differential channels (8 single-ended), dual-supply operation typically ±15 V (with ±10.8 V to ±16.5 V range), low on-resistance (on the order of 100 Ω typical), low leakage currents, break-before-make switching, TTL/CMOS-compatible digital inputs, and fast switching times. Verify exact limits against the current ADG409 datasheet revision for your design margins.
Which should I choose for a new RoHS-compliant design?
Choose ADG409BRZ. The Z suffix indicates RoHS-compliant, lead-free construction, which is required for most new commercial designs and for compliance with RoHS directives. ADG409BR (non-Z) is the legacy leaded variant and should generally be reserved for existing designs or where leaded parts are explicitly permitted.
Can ADG409BRZ directly replace ADG409BR on an existing PCB?
Yes, from a footprint and function standpoint: same 16-lead SOIC package, same pinout, and same electrical specifications. The only consideration is documentation/procurement compliance (RoHS status), not electrical or mechanical compatibility. Confirm the assembly's soldering process and compliance requirements before substituting.
What supply and logic levels do these multiplexers require?
The ADG409 operates from dual supplies, typically ±15 V (datasheet range approximately ±10.8 V to ±16.5 V), and its digital control inputs are TTL/CMOS compatible, allowing direct interfacing with standard 3 V/5 V logic in most configurations. Always confirm the logic threshold and supply limits in the current datasheet for your specific operating conditions.
Are ADG409BRZ and ADG409BR still available, and how are they ordered?
Availability and lifecycle status should be verified with authorized distributors (e.g., DigiKey, Mouser, TTI, Future Electronics) or Analog Devices directly, as status can change. Ordering is by the full part number: ADG409BRZ for the RoHS-compliant 16-lead SOIC variant and ADG409BR for the non-Z variant. Do not assume stock or lifecycle status without checking current distributor data.