Part A
AD8306AR
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7304 PCS
- Package
- SOIC-16
- Series
- Linear - Amplifiers - Special Purpose
Replacement verdict
Not a drop-in replacement
The AD8306AR and AD8300ARZ-REEL are not functionally interchangeable. The AD8306AR is a 5 MHz to 400 MHz limiting logarithmic amplifier with RSSI, while the AD8300ARZ-REEL is a 3 V, 12-bit serial digital-to-analog converter. They differ in core function, signal interface, supply requirements, and package, so substitution is not feasible without a complete circuit redesign.
Different core function
Different signal interface
Different supply requirements
Different package type
Parts at a glance
Part B
AD8300ARZ-REEL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 7544 PCS
- Package
- SOIC-8
- Series
- Acquisição de dados - Convertedores digitais para analógicos (DAC)
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8306AR | AD8300ARZ-REEL | Why it matters |
|---|---|---|---|
| Function / Type | Limiting logarithmic amplifier (RSSI, 5 MHz to 400 MHz) | 12-bit serial digital-to-analog converter (DAC) | These are fundamentally different device classes; one is an RF signal-strength detector and the other is a DAC, so they are not functionally substitutable. |
| Package | 16-lead SOIC (R-16) | 8-lead SOIC (R-8) | Different pin counts and footprints prevent drop-in board replacement. |
| Supply Voltage | 2.7 V to 6.5 V (single supply) | 2.7 V to 5.5 V (single supply) | Operating voltage range must match the system rail for reliable operation. |
| Signal Path / Interface | Analog RF input, analog logarithmic output | Serial digital input, analog voltage output | The interface type determines how the part connects to surrounding circuitry and cannot be interchanged. |
| Frequency / Update Rate | Operates from 5 MHz to 400 MHz | Not applicable (DC DAC, no RF frequency spec) | RF frequency capability is essential for signal-chain parts but irrelevant to a DC DAC. |
| Resolution / Dynamic Range | 90 dB RSSI dynamic range | 12-bit DAC resolution | These specifications describe entirely different performance dimensions and cannot be compared directly. |
| Operating Temperature Range | -40 °C to +85 °C | -40 °C to +85 °C | Both share the same industrial temperature range, so thermal environment is not a differentiator. |
| Typical Application | RSSI and received signal strength measurement in RF systems | Digital control and voltage setting in instrumentation | Application context confirms the parts serve unrelated roles and are not substitutes. |
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Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8306AR | AD8300ARZ-REEL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Obsolete | Active |
| Number of Bits | - | 12 |
| Number of D/A Converters | - | 1 |
| Settling Time | - | 14µs (Typ) |
| Output Type | - | Voltage - Buffered |
| Differential Output | - | No |
| Data Interface | - | SPI, DSP |
| Reference Type | - | Internal |
| Voltage - Supply, Analog | - | 2.7V ~ 5.5V |
| Voltage - Supply, Digital | - | 2.7V ~ 5.5V |
| INL / DNL(LSB) | - | ±0.5, ±0.5 |
| Architecture | - | R-2R |
| Operating Temperature | - | -40°C ~ 85°C |
| Type | Limiting-Logarithmic Amplifier | - |
| Applications | Receiver Signal Strength Indication (RSSI) | - |
| Mounting Type | Surface Mount | - |
Frequently asked questions
Are the AD8306AR and AD8300ARZ-REEL functionally interchangeable?
No. The AD8306AR is a 5 MHz to 400 MHz, 100 dB logarithmic amplifier (log amp) from Analog Devices, while the AD8300ARZ-REEL is a 12-bit digital-to-analog converter (DAC) from the same manufacturer. They serve entirely different signal-chain functions and are not substitutes for one another.
What are the core functions of the AD8306AR and AD8300ARZ-REEL?
The AD8306AR is a complete IF limiting amplifier with an RSSI (received signal strength indicator) output, providing accurate logarithmic conversion over a 100 dB dynamic range for RF/IF signal measurement. The AD8300ARZ-REEL is a 12-bit voltage-output DAC intended for digital-to-analog signal conversion in control and instrumentation applications.
What are the key performance specifications of the AD8306AR?
The AD8306AR operates over a 5 MHz to 400 MHz input frequency range with a nominal 100 dB dynamic range, logarithmic slope of 20 mV/dB, and operates from a single 2.7 V to 5.5 V supply. It is offered in a 16-lead SOIC package. Designers should confirm exact limits against the Analog Devices AD8306 datasheet.
What are the key performance specifications of the AD8300ARZ-REEL?
The AD8300ARZ-REEL is a 12-bit DAC with a voltage output, operating from a single 2.7 V to 5.5 V supply, and is supplied in a 16-lead SOIC package in tape-and-reel format. Exact linearity, settling time, and reference specifications should be verified against the Analog Devices AD8300 datasheet.
Do the AD8306AR and AD8300ARZ-REEL share the same package and pinout?
Both devices are offered in 16-lead SOIC packages, but their pin functions and internal architectures differ because one is an RF log amp and the other is a DAC. Pin-to-pin compatibility must not be assumed; each pinout must be verified against the respective manufacturer datasheet before any board-level substitution is considered.
Can the AD8306AR and AD8300ARZ-REEL be used together in a single design?
Yes, they can coexist in a system because they perform complementary functions: the AD8306AR can measure RF/IF signal strength while the AD8300ARZ-REEL can provide analog control or bias voltages. Their combined use is application-dependent and must be validated against the system requirements and each device's datasheet.
What supply voltage ranges do the AD8306AR and AD8300ARZ-REEL require?
Both devices are specified for single-supply operation in the 2.7 V to 5.5 V range per their Analog Devices datasheets. Designers should confirm the exact recommended operating conditions, including decoupling and reference requirements, for each part before finalizing the power design.
Which part should be selected for RF signal-strength measurement versus digital-to-analog conversion?
For RF/IF signal-strength measurement and logarithmic detection, the AD8306AR is the appropriate choice. For converting digital codes into analog voltages, the AD8300ARZ-REEL is the appropriate choice. Selection must be based on the signal-chain function, not on package similarity.