Part A
AD8346ARU
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2410 PCS
- Package
- TSSOP-16
- Series
- RF Modulators
Replacement verdict
Compatible functional replacement candidate
The AD8346ARUZ is a RoHS-compliant, lead-free version of the AD8346ARU and is form, fit, and function equivalent, making it a suitable drop-in replacement where lead-free compliance is required. Both parts share the same quadrature modulator core, package footprint, and electrical specifications, so substitution requires no circuit redesign; only solder reflow profile and compliance documentation differ.
Function and Circuit Topology
High match
Package and Pinout
High match
Electrical Specifications
High match
RoHS and Lead-Free Compliance
Validation required
Parts at a glance
Part B
AD8346ARUZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 4236 PCS
- Package
- TSSOP-16
- Series
- RF Modulators
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8346ARUZ | AD8346ARU | Why it matters |
|---|---|---|---|
| Function | Quadrature modulator, 800 MHz to 2.5 GHz | Quadrature modulator, 800 MHz to 2.5 GHz | Both parts perform the same RF modulation function, so they are functionally interchangeable in the same circuit. |
| Frequency Range | 800 MHz to 2.5 GHz | 800 MHz to 2.5 GHz | The operating band must cover the target application frequency for the modulator to work correctly. |
| Package / Case | 16-Lead TSSOP | 16-Lead TSSOP | Identical package and pinout allow drop-in board replacement without layout changes. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Matching supply range ensures compatibility with the same power rail design. |
| Output Frequency Range | 800 MHz to 2.5 GHz | 800 MHz to 2.5 GHz | The modulated output must span the required transmit band for the application. |
| Modulation Type | I/Q quadrature (vector) modulation | I/Q quadrature (vector) modulation | The modulation scheme determines compatibility with the baseband signal chain and supported standards. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | The temperature range must meet the environmental requirements of the target system. |
| RoHS / Lead Status | RoHS compliant, lead-free | Non-RoHS, contains lead | RoHS compliance affects regulatory acceptance and solder process compatibility; the Z suffix denotes the lead-free variant. |
| Part Number Suffix Meaning | Z = RoHS-compliant lead-free version | No Z = standard leaded version | The suffix distinguishes packaging/environmental compliance, which matters for procurement and regulatory requirements. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8346ARU | AD8346ARUZ |
|---|---|---|
| Part Status | Obsolete | Active |
| Function | Modulator | Modulator |
| LO Frequency | 800MHz ~ 2.5GHz | 800MHz ~ 2.5GHz |
| RF Frequency | 800MHz ~ 2.5GHz | 800MHz ~ 2.5GHz |
| P1d B | -3dBm | -3dBm |
| Noise Floor | -147dBm/Hz | -147dBm/Hz |
| Output Power | -6dBm | -6dBm |
| Supply Current | 55 mA | 55 mA |
| Voltage - Supply | 2.7V ~ 5.5V | 2.7V ~ 5.5V |
| Test Frequency | 1.9GHz | 1.9GHz |
Frequently asked questions
What is the difference between the AD8346ARUZ and the AD8346ARU?
The AD8346ARUZ and AD8346ARU are both Analog Devices 800 MHz to 2.5 GHz quadrature modulators in a 16-lead TSSOP package. The primary difference is the suffix: the "Z" designation on the AD8346ARUZ indicates RoHS-compliant, lead-free (Pb-free) construction, while the AD8346ARU is the non-RoHS, lead-containing version. Both share the same functional specifications and pinout.
Are the AD8346ARUZ and AD8346ARU electrically and functionally interchangeable?
Yes. Both parts are the same AD8346 quadrature modulator die in the same 16-lead TSSOP package with identical pinout and electrical specifications, including the 800 MHz to 2.5 GHz operating frequency range, I/Q inputs, and LO input. The only documented difference is the RoHS/lead-free status indicated by the "Z" suffix.
What is the operating frequency range of the AD8346ARUZ and AD8346ARU?
Both the AD8346ARUZ and AD8346ARU are specified for an RF output frequency range of 800 MHz to 2.5 GHz, as stated in the Analog Devices AD8346 datasheet.
What package do the AD8346ARUZ and AD8346ARU use?
Both devices are supplied in a 16-lead TSSOP (Thin Shrink Small Outline Package), designated by the "RU" code in the part number. The package footprint and pin assignments are identical between the two versions.
Does the "Z" suffix on the AD8346ARUZ affect its electrical performance?
No. The "Z" suffix denotes RoHS compliance and lead-free (Pb-free) termination finish per Analog Devices part numbering conventions. It does not change the device's electrical specifications, which remain the same as the AD8346ARU.
Can the AD8346ARUZ be used as a drop-in replacement for the AD8346ARU?
Yes, from a functional and footprint standpoint the AD8346ARUZ is a drop-in replacement for the AD8346ARU, since both share the same die, package, and pinout. The substitution should be validated against the target design's assembly and compliance requirements, particularly regarding RoHS/lead-free soldering processes.
Which version should be selected for RoHS-compliant or lead-free assembly?
The AD8346ARUZ should be selected for RoHS-compliant or lead-free assembly, as its "Z" suffix indicates Pb-free termination finish and RoHS compliance. The AD8346ARU is the non-RoHS, lead-containing version and is not intended for lead-free processes.