Part A
AD8307AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2581 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker
Replacement verdict
Compatible functional replacement candidate
The AD8307ARZ-RL7 and AD8307AR are functionally equivalent logarithmic detectors sharing the same core die, electrical specifications, and SOIC-8 package; the only distinction is the tape-and-reel packaging of the RL7 variant versus the tube packaging of the AR variant, making them interchangeable in circuit design with no electrical or footprint impact.
Function and Circuit Topology
High match
Package and Footprint
High match
Electrical Specifications
High match
Packaging Format
Validation required
Parts at a glance
Part B
AD8307ARZ-RL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2524 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8307ARZ-RL7 | AD8307AR | Why it matters |
|---|---|---|---|
| Function | Logarithmic amplifier / RSSI detector | Logarithmic amplifier / RSSI detector | Both parts perform the same core signal-detection function, so they are functionally interchangeable in that respect. |
| Frequency Range | DC to 500 MHz | DC to 500 MHz | The usable input bandwidth determines the applications in which the detector can be substituted without redesign. |
| Dynamic Range | 92 dB | 92 dB | Dynamic range defines the span of input signal levels the detector can measure accurately, critical for RSSI and power-measurement designs. |
| Logarithmic Slope | 25 mV/dB | 25 mV/dB | The slope sets the output voltage change per dB of input, so matching values ensure identical transfer characteristics in a circuit. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Compatible supply ranges allow the parts to be used in the same power rail configuration without modification. |
| Supply Current | 7.5 mA typical | 7.5 mA typical | Quiescent current affects power budget and thermal behavior, so identical values mean no change in power consumption. |
| Package / Mounting | 8-Lead SOIC, surface mount, tape and reel | 8-Lead SOIC, surface mount, tube | Packaging and delivery format differ (reel vs tube), which affects assembly line handling and inventory, though the footprint is the same. |
| Ordering / Packaging Suffix | RL7 (tape and reel, RoHS-compliant Z grade) | Standard tube packaging | The suffix indicates packaging and RoHS status, which matters for procurement, compliance, and automated placement equipment. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Identical temperature ratings ensure the parts can be substituted in the same environmental conditions. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8307AR | AD8307ARZ-RL7 |
|---|---|---|
| Part Status | Obsolete | Active |
| Type | Logarithmic Amplifier | Logarithmic Amplifier |
| Applications | Receiver Signal Strength Indication (RSSI) | Receiver Signal Strength Indication (RSSI) |
| Mounting Type | Surface Mount | Surface Mount |
Frequently asked questions
What is the difference between AD8307ARZ-RL7 and AD8307AR?
Both parts are the same AD8307 logarithmic amplifier die in an 8-lead SOIC package. The AD8307AR is the standard tube/tray ordering option, while AD8307ARZ-RL7 is the RoHS-compliant version supplied in 7-inch tape-and-reel packaging for automated assembly. The "Z" denotes RoHS compliance and "RL7" denotes the 7-inch reel quantity.
Are AD8307ARZ-RL7 and AD8307AR electrically and functionally identical?
Yes. Both are the AD8307 500 MHz, 92 dB logarithmic amplifier with the same internal architecture, pinout, and specified performance. The differences are limited to RoHS compliance (Z suffix) and packaging format (tape-and-reel vs. tube/tray), not to electrical specifications.
Is the AD8307ARZ-RL7 RoHS compliant while the AD8307AR is not?
The AD8307ARZ-RL7 carries the "Z" suffix, which Analog Devices uses to designate RoHS-compliant, lead-free packaging. The AD8307AR is the non-Z ordering code and is not designated as RoHS compliant. Designers requiring RoHS compliance should specify the Z-suffix part.
Can AD8307ARZ-RL7 be used as a drop-in replacement for AD8307AR?
Yes, from an electrical and footprint standpoint. Both are 8-lead SOIC devices with identical pin functions and specified performance. The substitution is valid provided the assembly process and inventory system accept the RoHS-compliant, tape-and-reel packaging of the AD8307ARZ-RL7.
What is the difference in packaging between AD8307ARZ-RL7 and AD8307AR?
AD8307ARZ-RL7 is supplied on a 7-inch tape-and-reel (RL7 suffix) intended for automated pick-and-place production. AD8307AR is supplied in standard tube/tray packaging. Both use the same 8-lead SOIC body; only the shipping medium and RoHS status differ.
Do AD8307ARZ-RL7 and AD8307AR share the same operating frequency range and dynamic range?
Yes. Both are specified as 500 MHz logarithmic amplifiers with a 92 dB dynamic range, covering DC to 500 MHz. These parameters are identical because both ordering codes refer to the same AD8307 silicon.
Which part should be selected for a RoHS-compliant production build?
AD8307ARZ-RL7 should be selected. Its Z suffix confirms RoHS compliance and its RL7 tape-and-reel format suits automated SMT production. AD8307AR should be reserved for legacy or non-RoHS-constrained designs.