Overview
The AD606JR, produced by Analog Devices Inc., is a complete, monolithic logarithmic amplifier that utilizes a 9-stage successive-detection technique. This device provides both logarithmic and limited outputs, making it versatile for various signal processing applications. It operates from a single +5 V supply, consuming a typical power of 65 mW, and can be powered down to a standby power of less than 1 mW within 5 µs. The AD606JR is available in 16-lead plastic DIP and SOIC packages and is specified for the commercial temperature range of 0°C to +70°C.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Units |
|---|---|---|---|---|---|
| SIGNAL INPUT - Log Amp fMAX | AC Coupled; Sinusoidal Input | - | 50 | - | MHz |
| SIGNAL INPUT - Limiter fMAX | AC Coupled; Sinusoidal Input | - | 100 | - | MHz |
| Dynamic Range | - | - | 80 | - | dB |
| Input Resistance | Differential Input | 500 | 2,500 | - | Ω |
| Input Capacitance | Differential Input | - | 2 | - | pF |
| Limiter Flatness | -75 dBm to +5 dBm Input Signal at 10.7 MHz | -1.5 | - | +1.5 | dB |
| Output Current | At Pins 8 or 9, Proportional to VPOS, LADJ Grounded | - | 1.2 | - | mA |
| Phase Variation with Input Level | -75 dBm to +5 dBm Input Signal at 10.7 MHz | - | - | ±3 | Degrees |
| LOG (RSSI) OUTPUT - Nominal Slope | At 10.7 MHz; (0.0075 × VPOS)/dB | - | 37.5 | - | mV/dB |
| Voltage - Supply, Single/Dual (±) | - | 4.5 | 5 | 5.5 | V |
| Current - Supply | - | - | 13 | - | mA |
| Operating Temperature | - | 0 | - | 70 | °C |
Key Features
- Logarithmic amplifier performance with a dynamic range of 80 dB (-75 dBm to +5 dBm).
- Low input noise and usable up to more than 50 MHz.
- On-chip low-pass output filter with a nominal slope of 37.5 mV/dB.
- Limiter output with ±1 dB flatness over 80 dB range and ±3° phase stability at 10.7 MHz.
- Single +5 V supply operation with typical power consumption of 65 mW and CMOS-compatible power-down to 325 µW.
- Enable/disable time of less than 5 µs.
- Differential input and output configurations).
Applications
- Ultrasound and sonar processing).
- Phase-stable limiting amplifier up to 100 MHz).
- Received Signal Strength Indicator (RSSI)).
- Wide range signal and power measurement).
Q & A
- What is the dynamic range of the AD606JR?
The AD606JR has a dynamic range of 80 dB, from -75 dBm to +5 dBm).
- What is the maximum frequency for the logarithmic amplifier and limiter?
The logarithmic amplifier can operate up to 50 MHz, and the limiter can operate up to 100 MHz).
- What is the typical power consumption of the AD606JR?
The AD606JR typically consumes 65 mW of power).
- How does the AD606JR handle power-down?
The AD606JR can be powered down to a standby power of less than 1 mW within 5 µs).
- What is the phase stability of the limiter output?
The limiter output has a phase stability of ±3° at 10.7 MHz over the 80 dB range).
- What is the nominal slope of the logarithmic output?
The nominal slope of the logarithmic output is 37.5 mV/dB).
- What are the typical applications of the AD606JR?
The AD606JR is typically used in ultrasound and sonar processing, phase-stable limiting amplifiers, RSSI, and wide range signal and power measurement).
- What is the operating temperature range of the AD606JR?
The AD606JR operates within the temperature range of 0°C to +70°C).
- What package types are available for the AD606JR?
The AD606JR is available in 16-lead plastic DIP and SOIC packages).
- How does the AD606JR handle input offset?
The AD606JR has a second low-pass filter that automatically nulls the input offset of the first stage down to the submicrovolt level).
