Part A
AD8307AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 2581 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Special Purpose
Replacement verdict
Compatible functional replacement candidate
The AD8307AR and AD8307AR-REEL7 are functionally identical logarithmic amplifiers; the only distinction is packaging format, with the REEL7 variant supplied on tape and reel for automated assembly. Either part number can be used interchangeably in the same design, and selection should be driven solely by the production handling and inventory requirements of the assembly line.
Function and Circuit Topology
High match
Package Type and Pinout
High match
Electrical Specifications
High match
Operating Temperature Range
High match
Parts at a glance
Part B
AD8307AR-REEL7
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 5045 PCS
- Package
- SOIC-8
- Series
- Linear - Amplifiers - Special Purpose
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8307AR | AD8307AR-REEL7 | Why it matters |
|---|---|---|---|
| Function | Logarithmic amplifier / RF detector | Logarithmic amplifier / RF detector | Confirms both parts perform the same core signal-detection function, so they are functionally interchangeable. |
| Frequency Range | DC to 500 MHz | DC to 500 MHz | Defines the operating bandwidth; identical range means the parts cover the same applications. |
| Dynamic Range | 92 dB | 92 dB | Determines the span of input signal levels the detector can measure; matching values ensure equivalent measurement capability. |
| Logarithmic Slope | 25 mV/dB | 25 mV/dB | Sets the output voltage change per dB of input; identical slope means the same transfer characteristic and calibration. |
| Supply Voltage | 2.7 V to 5.5 V | 2.7 V to 5.5 V | Defines compatible power rails; identical range allows direct substitution in the same circuit. |
| Supply Current | 7.5 mA (typical) | 7.5 mA (typical) | Affects power budget and thermal design; matching current draw means no change in power consumption. |
| Package / Mounting | 8-Lead SOIC (surface mount) | 8-Lead SOIC (surface mount) | Same package and footprint ensures physical drop-in compatibility on the PCB. |
| Packaging / Delivery Form | Tube / individual | Tape and reel (7-inch reel) | The only difference is the shipping format; reel packaging suits automated high-volume assembly while tube suits prototyping or low-volume use. |
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Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8307AR | AD8307AR-REEL7 |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Obsolete |
| 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 AD8307AR and AD8307AR-REEL7?
The AD8307AR and AD8307AR-REEL7 are the same AD8307 logarithmic amplifier die in the same 8-lead SOIC package. The difference is packaging format: AD8307AR is supplied in tube/tray quantities, while AD8307AR-REEL7 is supplied on a 7-inch tape-and-reel for automated assembly. Electrical performance is identical.
Are AD8307AR and AD8307AR-REEL7 electrically and functionally interchangeable?
Yes. Both order codes refer to the same AD8307 device in an 8-lead SOIC (R-8) package with identical pinout and specified performance. They differ only in shipping container, so they are interchangeable in the finished assembly.
What are the key specifications of the AD8307?
The AD8307 is a DC-to-500 MHz, 92 dB logarithmic amplifier/demodulator. It provides a nominal 25 mV/dB logarithmic slope and a typical -75 dBm to +17 dBm input range (referenced to 50 ohms), operating from a single 2.7 V to 5.5 V supply. Consult the Analog Devices datasheet for guaranteed limits over temperature.
What package does the AD8307AR use, and is it RoHS compliant?
The AD8307AR and AD8307AR-REEL7 are offered in an 8-lead SOIC package (R-8 suffix). RoHS/lead-free status depends on the specific order code and revision; verify the compliance status on the Analog Devices product page or an authorized distributor listing before design release.
Which order code should be chosen for high-volume automated PCB assembly?
AD8307AR-REEL7 is the appropriate choice for automated pick-and-place lines because it is supplied on 7-inch tape-and-reel. AD8307AR in tubes is typically used for prototyping, low-volume runs, or manual assembly.
Can AD8307AR-REEL7 be used in place of AD8307AR without design changes?
Yes. Since both are the same device in the same 8-lead SOIC package with identical pinout and electrical specifications, no PCB layout or circuit design changes are required. Only the assembly handling equipment differs due to the tape-and-reel format.
What are the typical applications of the AD8307?
The AD8307 is commonly used for received signal strength indication (RSSI), RF power measurement, logarithmic amplification, and signal level detection in receivers and test equipment across DC to 500 MHz. Application suitability should be confirmed against the datasheet and the specific system requirements.