Overview
The AD602JR-REEL7, produced by Analog Devices Inc., is a dual-channel, low noise, variable gain amplifier. It is part of the AD600/AD602 series, optimized for applications requiring precise gain control, low noise, and wide bandwidth. Each independent channel of the AD602 provides a gain range of −10 dB to +30 dB, making it suitable for various high-performance applications such as ultrasound imaging, high-performance audio, and RF AGC systems. The amplifier utilizes Analog Devices' proprietary X-AMP® circuit topology, which combines a variable attenuator with a high-speed fixed-gain amplifier to achieve stable and accurate gain control.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Gain Range | −10 dB to +30 dB | dB |
| Input Noise Spectral Density | 1.4 nV/√Hz | nV/√Hz |
| Bandwidth | dc to 35 MHz (−3 dB) | MHz |
| Slew Rate | 275 V/μs | V/μs |
| Power Consumption | 125 mW (maximum) per amplifier | mW |
| Supply Voltage | ±4.75 V to ±5.25 V | V |
| Operating Temperature Range | 0°C to 70°C (J Grade) | °C |
| Total Harmonic Distortion | −60 dBc at ±1 V output | dBc |
| Output Impedance | 2 Ω (f ≤ 10 MHz) | Ω |
| Output Short-Circuit Current | 50 mA | mA |
| Group Delay Change vs. Gain | ±2 ns | ns |
Key Features
- Low Noise and Distortion: The AD602 features a low input noise spectral density of 1.4 nV/√Hz and a total harmonic distortion of −60 dBc at ±1 V output.
- Wide Bandwidth: The amplifier has a bandwidth of dc to 35 MHz (−3 dB), making it suitable for high-frequency applications.
- Accurate Gain Control: The gain is directly proportional to the control voltage, accurately calibrated, and stable over temperature and supply variations.
- Signal Gating Function: Each amplifier channel has a signal gating function, allowing for quick on/off switching with a response time of 0.3 μs.
- High Speed and Low Power: The amplifier has a slew rate of 275 V/μs and consumes a maximum of 125 mW per channel.
- TTL- and CMOS-Compatible Logic Inputs: The logic inputs are compatible with both TTL and CMOS logic levels.
Applications
- Ultrasound Imaging: The AD602 is optimized for use in ultrasound imaging systems, providing precise gain control and low noise.
- High-Performance Audio: Suitable for audio applications requiring high fidelity and low distortion.
- RF AGC Systems: Used in radio frequency automatic gain control systems to maintain signal integrity.
- Signal Measurement: Applicable in various signal measurement systems where accurate gain and low noise are critical.
Q & A
- What is the gain range of the AD602JR-REEL7?
The gain range of the AD602JR-REEL7 is −10 dB to +30 dB.
- What is the input noise spectral density of the AD602JR-REEL7?
The input noise spectral density is 1.4 nV/√Hz.
- What is the bandwidth of the AD602JR-REEL7?
The bandwidth is dc to 35 MHz (−3 dB).
- How much power does the AD602JR-REEL7 consume?
The maximum power consumption is 125 mW per amplifier.
- What is the operating temperature range for the AD602JR-REEL7?
The operating temperature range is 0°C to 70°C (J Grade).
- What is the total harmonic distortion of the AD602JR-REEL7?
The total harmonic distortion is −60 dBc at ±1 V output.
- Can the AD602JR-REEL7 drive low impedance loads?
Yes, it can drive loads as low as 100 Ω with low distortion.
- What is the slew rate of the AD602JR-REEL7?
The slew rate is 275 V/μs.
- Does the AD602JR-REEL7 have a signal gating function?
Yes, each amplifier channel has a signal gating function with a response time of 0.3 μs.
- Is the AD602JR-REEL7 compatible with TTL and CMOS logic?
Yes, the logic inputs are compatible with both TTL and CMOS logic levels.
