Overview
The AD8309ARU-REEL7, produced by Analog Devices Inc., is a highly integrated IF limiting amplifier and logarithmic amplifier. This device is designed to provide both an accurate logarithmic (decibel) measure of the input signal, known as the Received Signal Strength Indication (RSSI), and a programmable limiter output. It operates over a wide frequency range from 5 MHz to 500 MHz, making it versatile for various high-performance receiver applications. The AD8309 is fabricated using an advanced complementary bipolar process with silicon-on-insulator isolation techniques and is available in a 16-lead TSSOP package.
Key Specifications
| Parameter | Min | Typ | Max | Units |
|---|---|---|---|---|
| Supply Voltage | 2.7 | - | 6.5 | V |
| Supply Current | - | 16 | - | mA |
| Power Consumption (at 3 V) | - | <50 | - | mW |
| Input Resistance | 800 | 1000 | 1200 | Ω |
| Input Capacitance | - | 2.5 | - | pF |
| Usable Frequency Range | 5 | - | 500 | MHz |
| Dynamic Range | - | 100 | - | dB |
| Power-Up Time | - | 500 | - | ns |
| Sleep Current | - | <1 | - | μA |
Key Features
- Accurate logarithmic (decibel) measure of the input signal (RSSI) over a dynamic range of 100 dB.
- Programmable limiter output with a total gain of up to 90 dB.
- Single supply voltage of +2.7 V to +6.5 V with low power consumption.
- CMOS-compatible control interface for quick enable and disable.
- High impedance fully differential inputs with low noise floor.
- Temperature stability with an operating range of –40°C to +85°C.
- Compact 16-lead TSSOP package.
Applications
- Receivers for Frequency and Phase Modulation.
- Wide Range IF and RF Power Measurement.
- Receiver Signal Strength Indication (RSSI).
- Low Cost Radar and Sonar Signal Processing.
- Instrumentation: Network and Spectrum Analyzers.
Q & A
- What is the primary function of the AD8309ARU-REEL7? The primary function is to provide an accurate logarithmic measure of the input signal (RSSI) and a programmable limiter output.
- What is the operating frequency range of the AD8309ARU-REEL7? The device operates from 5 MHz to 500 MHz.
- What is the supply voltage range for the AD8309ARU-REEL7? The supply voltage range is from +2.7 V to +6.5 V.
- How much power does the AD8309ARU-REEL7 consume at 3 V? The power consumption is under 50 mW at 3 V.
- What is the input impedance of the AD8309ARU-REEL7? The input impedance is approximately 1 kΩ in parallel with 2.5 pF.
- What is the dynamic range of the RSSI function? The dynamic range is 100 dB.
- How quickly can the AD8309ARU-REEL7 be enabled and disabled? The device can be enabled within about 500 ns and disabled to a standby current of under 1 μA.
- What are the typical applications of the AD8309ARU-REEL7? Applications include receivers for frequency and phase modulation, wide range IF and RF power measurement, RSSI, low-cost radar and sonar signal processing, and instrumentation such as network and spectrum analyzers.
- What is the operating temperature range of the AD8309ARU-REEL7? The operating temperature range is from –40°C to +85°C.
- In what package is the AD8309ARU-REEL7 available? The device is available in a 16-lead TSSOP package.
