Overview
The AD602ARZ-RL, 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 use in ultrasound imaging systems but is also applicable to any application requiring precise gain, low noise and distortion, and wide bandwidth. Each independent channel of the AD602 provides a gain range of –10 dB to +30 dB, with an improved signal-to-noise ratio (SNR) compared to the AD600 due to its lower gain range. The amplifiers feature a proprietary X-AMP circuit, ensuring accurate and stable gain control, low input noise, and high bandwidth.
Key Specifications
| Parameter | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Gain Range | -10 | - | +30 | dB |
| Input Noise Spectral Density | 1.4 | 1.4 | 1.4 | nV/√Hz |
| -3 dB Bandwidth | 35 | 35 | 35 | MHz |
| Slew Rate | 275 | 275 | 275 | V/μs |
| Peak Output (RL ≥ 500 Ω) | ±2.5 | ±3 | ±2.5 | V |
| Total Harmonic Distortion (RL= 200 Ω, VOUT = ±1 V peak) | -60 | -60 | -60 | dBc |
| Supply Voltage Range | ±4.75 | - | ±5.25 | V |
| Quiescent Current per Channel | 11 | 12.5 | 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).
- Low distortion with –60 dBc THD at ±1 V output.
- Signal gating function for each amplifier channel, TTL- and CMOS-compatible.
- Stable group delay with less than ±2 ns variation over the full gain range.
- Ability to drive high speed ADCs and 100 Ω load impedances with low distortion.
- MIL-STD-883-compliant and DESC versions available.
Applications
- Ultrasound and sonar time-gain controls.
- High performance audio and RF AGC (Automatic Gain Control) systems.
- Signal measurement and processing.
- Any application requiring precise gain, low noise and distortion, and wide bandwidth.
Q & A
- What is the gain range of the AD602ARZ-RL?
The gain range of the AD602ARZ-RL is –10 dB to +30 dB.
- What is the input noise spectral density of the AD602ARZ-RL?
The input noise spectral density is 1.4 nV/√Hz.
- What is the –3 dB bandwidth of the AD602ARZ-RL?
The –3 dB bandwidth is nominally 35 MHz.
- What is the slew rate of the AD602ARZ-RL?
The slew rate is 275 V/μs.
- Can the AD602ARZ-RL drive high speed ADCs?
- What is the total harmonic distortion (THD) of the AD602ARZ-RL?
The THD is typically –60 dBc for a ±1 V peak output into a 200 Ω load.
- Is the AD602ARZ-RL MIL-STD-883 compliant?
- What is the supply voltage range for the AD602ARZ-RL?
The supply voltage range is ±4.75 V to ±5.25 V.
- What is the quiescent current per channel for the AD602ARZ-RL?
The quiescent current per channel is typically 11 mA to 14 mA.
- Does the AD602ARZ-RL have a signal gating function?
