Overview
The AD602JRZ-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, which is optimized for use in ultrasound imaging systems but is also applicable to various other applications requiring precise gain, low noise, and wide bandwidth. Each independent channel of the AD602 provides a gain range of –10 dB to +30 dB, with a maximum gain of 31.07 dB. The amplifier features a proprietary X-AMP circuit, ensuring accurate and stable gain control, low input noise, and high bandwidth.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Gain Range | - | -10 | - | +30 | dB |
| Input Noise Spectral Density | - | 1.4 | 1.4 | - | nV/√Hz |
| -3 dB Bandwidth | VOUT = 100 mV rms | 35 | 35 | - | MHz |
| Slew Rate | - | 275 | 275 | - | V/μs |
| Peak Output | RL ≥ 500 Ω | ±2.5 | ±3 | - | V |
| Output Impedance | f ≤ 10 MHz | 2 | 2 | - | Ω |
| Total Harmonic Distortion | RL= 200 Ω, VOUT = ±1 V peak | -60 | -60 | - | dBc |
| Group Delay Change vs. Gain | f = 3 MHz; full gain range | ±2 | ±2 | - | ns |
| Power Supply Range | - | ±4.75 | - | ±5.25 | V |
| Quiescent Current per Channel | - | 11 | 12.5 | 14 | mA |
Key Features
- Low Noise and Distortion: The AD602 features an 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 –3 dB bandwidth of 35 MHz, essentially independent of the gain setting.
- Precise Gain Control: The gain is directly proportional to the control voltage, accurately calibrated, and supply and temperature-stable.
- Signal Gating: Each channel has an independent gating facility that can block signal transmission and set the dc output level to within a few millivolts of the output ground.
- TTL- and CMOS-Compatible: The gating control input is compatible with both TTL and CMOS logic levels.
- High Speed and Low Power: The amplifier has a slew rate of 275 V/μs and a maximum power consumption of 125 mW per channel.
Applications
- Ultrasound Imaging Systems: Optimized for use in ultrasound imaging, providing precise gain and low noise.
- High Performance Audio and RF AGC Systems: Suitable for applications requiring low noise, low distortion, and wide bandwidth.
- Signal Measurement: Ideal for signal measurement applications due to its high accuracy and stability.
- High-Speed ADC Drivers: Can drive high-speed ADCs with low distortion.
Q & A
- What is the gain range of the AD602JRZ-RL?
The gain range of the AD602JRZ-RL is –10 dB to +30 dB. - What is the input noise spectral density of the AD602?
The input noise spectral density is 1.4 nV/√Hz. - What is the –3 dB bandwidth of the AD602?
The –3 dB bandwidth is 35 MHz. - What is the slew rate of the AD602?
The slew rate is 275 V/μs. - Can the AD602 drive low impedance loads?
Yes, the AD602 can drive 100 Ω load impedances with low distortion. - Is the AD602 compatible with TTL and CMOS logic?
Yes, the gating control input is TTL- and CMOS-compatible. - What is the power supply range for the AD602?
The power supply range is ±4.75 V to ±5.25 V. - What is the quiescent current per channel for the AD602?
The quiescent current per channel is typically 11 mA to 14 mA. - Does the AD602 have a signal gating feature?
Yes, each channel has an independent signal gating facility. - What are the typical applications of the AD602?
The AD602 is typically used in ultrasound imaging systems, high performance audio and RF AGC systems, and signal measurement applications.
