Overview
The AD602JRZ, produced by Analog Devices Inc., is a dual-channel, low noise, wideband variable gain amplifier. This component is part of the AD600/AD602 series, optimized for applications requiring precise gain, low noise, and wide bandwidth. The AD602JRZ is particularly suited for ultrasound imaging systems but is also applicable to other high-performance audio and RF automatic gain control (AGC) systems. Each independent channel of the AD602JRZ provides a gain range of –10 dB to +30 dB, with an improved signal-to-noise ratio (SNR) compared to the AD600 model due to its lower gain range.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Range | –10 dB | +30 dB | ||
| Input Noise Spectral Density | 1.4 | nV/√Hz | ||
| Bandwidth (–3 dB) | 35 MHz | |||
| Signal-to-Noise Ratio (SNR) at 1 V rms output and 1 MHz noise bandwidth | 86 dB | |||
| Supply Voltage Range | ±4.75 V | ±5 V | ±5.25 V | |
| Operating Temperature Range (J Grade) | 0°C | 70°C | ||
| Package Type | 16-Lead SOIC | |||
| Quiescent Current per Channel | 11 mA | 12.5 mA | 14 mA |
Key Features
- Dual-channel, low noise, wideband variable gain amplifier with a gain range of –10 dB to +30 dB.
- Accurate absolute gain with ±0.3 dB accuracy.
- Low input noise spectral density of 1.4 nV/√Hz.
- High bandwidth of dc to 35 MHz (–3 dB), essentially independent of the gain.
- Low distortion: –60 dBc THD at ±1 V output.
- Signal gating function for each amplifier, TTL- and CMOS-compatible.
- Ability to drive 100 Ω load impedances with low distortion.
- Proprietary X-AMP circuit for precise gain control.
- MIL-STD-883-compliant and DESC versions available.
Applications
- Ultrasound imaging systems.
- High-performance audio systems.
- RF automatic gain control (AGC) systems.
- Signal measurement and processing.
- Sonar time-gain controls.
Q & A
- What is the gain range of the AD602JRZ?
The gain range of the AD602JRZ is –10 dB to +30 dB.
- What is the input noise spectral density of the AD602JRZ?
The input noise spectral density is 1.4 nV/√Hz.
- What is the bandwidth of the AD602JRZ?
The bandwidth is dc to 35 MHz (–3 dB).
- What is the signal-to-noise ratio (SNR) of the AD602JRZ?
The SNR is typically 86 dB for a 1 V rms output and a 1 MHz noise bandwidth.
- What types of packages are available for the AD602JRZ?
The AD602JRZ is available in 16-lead SOIC packages.
- Is the AD602JRZ MIL-STD-883 compliant?
- What is the operating temperature range for the J Grade of the AD602JRZ?
The operating temperature range for the J Grade is 0°C to 70°C.
- Can the AD602JRZ drive high impedance loads?
- Is the AD602JRZ RoHS compliant?
- What is the quiescent current per channel for the AD602JRZ?
The quiescent current per channel is typically 12.5 mA.
