Overview
The AD8307AR, produced by Analog Devices Inc., is a low-cost, monolithic demodulating logarithmic amplifier. It is the first logarithmic amplifier available in an 8-lead SOIC_N package, making it highly compact and versatile. This device operates over a wide frequency range from DC to 500 MHz and provides a dynamic range of 92 dB with ±3 dB law conformance and 88 dB with ±1 dB error bound up to 100 MHz. The AD8307AR is designed for ease of use, requiring no significant external components and operating on a single-supply voltage of 2.7 V to 5.5 V at 7.5 mA. It also features a CMOS-compatible control pin for disabling the device to a standby current of 150 μA.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Input Range (±3 dB Error) | From noise floor to maximum input | 92 | dB | ||
| Input Range (±1 dB Error) | From noise floor to maximum input | 88 | dB | ||
| Logarithmic Conformance | f ≤ 100 MHz, central 80 dB | ±0.3 | ±1 | dB | |
| Logarithmic Slope | Unadjusted | 23 | 25 | 27 | mV/dB |
| Supply Voltage | 2.7 | 5.5 | V | ||
| Supply Current | 7.5 | mA | |||
| Operating Temperature | -40 | +85 | °C | ||
| Package Type | 8-lead SOIC, 8-lead PDIP |
Key Features
- Complete 500 MHz monolithic demodulating logarithmic amplifier using progressive compression technique.
- Dynamic range of 92 dB with ±3 dB law conformance and 88 dB with ±1 dB error bound up to 100 MHz.
- Single-supply voltage operation from 2.7 V to 5.5 V at 7.5 mA.
- CMOS-compatible control pin for disabling the device to a standby current of 150 μA.
- No significant external components required for operation.
- Industrial temperature range of -40°C to +85°C.
- Available in 8-lead SOIC and 8-lead PDIP packages.
Applications
- Industrial production
- Smart home appliances
- Electric vehicles
- Medical devices
- Internet of Things (IoT)
Q & A
- What is the operating frequency range of the AD8307AR?
The AD8307AR operates from DC to 500 MHz.
- What is the dynamic range of the AD8307AR?
The dynamic range is 92 dB with ±3 dB law conformance and 88 dB with ±1 dB error bound up to 100 MHz.
- What is the supply voltage range for the AD8307AR?
The supply voltage range is from 2.7 V to 5.5 V.
- What is the typical supply current of the AD8307AR?
The typical supply current is 7.5 mA.
- How can the AD8307AR be disabled?
The AD8307AR can be disabled using a CMOS-compatible control pin, reducing the current to 150 μA in standby mode.
- What are the available package types for the AD8307AR?
The AD8307AR is available in 8-lead SOIC and 8-lead PDIP packages.
- What is the operating temperature range of the AD8307AR?
The operating temperature range is from -40°C to +85°C.
- Does the AD8307AR require external components for operation?
No, the AD8307AR does not require significant external components for operation.
- What are some common applications of the AD8307AR?
Common applications include industrial production, smart home appliances, electric vehicles, medical devices, and Internet of Things (IoT).
- How does the AD8307AR achieve its logarithmic function?
The AD8307AR uses a progressive compression technique with a cascade of nonlinear amplifier cells to achieve its logarithmic function.
