Overview
The AD8331ARQZ-R7, produced by Analog Devices Inc., is a single-channel, ultralow noise, linear-in-dB, variable gain amplifier (VGA). This device is optimized for ultrasound systems and can be used as a low noise variable gain element at frequencies up to 120 MHz. It features an ultralow noise preamplifier and an X-AMP® VGA with a wide gain range, making it suitable for various high-performance applications.
Key Specifications
| Attribute | Value |
|---|---|
| Manufacturer | Analog Devices Inc. |
| Part Number | AD8331ARQZ-R7 |
| Package | QSOP-20-150mil |
| Supply Voltage Range | 4.5V to 5.5V |
| Operating Temperature Range | -40°C to 85°C |
| Bandwidth | 120 MHz |
| Gain Range (LO gain mode) | -4.5 dB to +43.5 dB |
| Gain Range (HI gain mode) | 7.5 dB to 55.5 dB |
| Input Voltage Noise | 0.74 nV/√Hz |
| Input Current Noise | 2.5 pA/√Hz |
| Output Impedance | 5 Ω (single-ended) |
| Power Consumption | 125 mW/channel |
| RoHS Compliance | Yes |
Key Features
- Ultralow noise preamplifier with voltage noise of 0.74 nV/√Hz and current noise of 2.5 pA/√Hz.
- X-AMP® VGA with a wide gain range of -4.5 dB to +43.5 dB in LO gain mode and 7.5 dB to 55.5 dB in HI gain mode.
- Excellent bandwidth uniformity across the entire gain range.
- Active input impedance matching and selectable output clamping level.
- Single 5 V supply operation.
- Low output-referred noise: 48 nV/√Hz typical.
- Optimized for 10-bit/12-bit ADCs.
Applications
- Ultrasound and sonar time-gain controls.
- High performance automatic gain control (AGC) systems.
- I/Q signal processing.
- High speed, dual ADC drivers.
Q & A
- What is the primary function of the AD8331ARQZ-R7?
The AD8331ARQZ-R7 is a single-channel, ultralow noise, linear-in-dB, variable gain amplifier (VGA) optimized for ultrasound systems and other high-performance applications.
- What is the gain range of the AD8331ARQZ-R7?
The gain range is -4.5 dB to +43.5 dB in LO gain mode and 7.5 dB to 55.5 dB in HI gain mode.
- What is the bandwidth of the AD8331ARQZ-R7?
The bandwidth is 120 MHz.
- What is the input voltage noise of the AD8331ARQZ-R7?
The input voltage noise is 0.74 nV/√Hz.
- Is the AD8331ARQZ-R7 RoHS compliant?
Yes, the AD8331ARQZ-R7 is RoHS compliant.
- What is the operating temperature range of the AD8331ARQZ-R7?
The operating temperature range is -40°C to 85°C.
- What is the power consumption of the AD8331ARQZ-R7?
The power consumption is 125 mW/channel.
- What are the typical applications of the AD8331ARQZ-R7?
Typical applications include ultrasound and sonar time-gain controls, high performance automatic gain control (AGC) systems, I/Q signal processing, and high speed, dual ADC drivers.
- What is the package type of the AD8331ARQZ-R7?
The package type is QSOP-20-150mil.
- What is the supply voltage range of the AD8331ARQZ-R7?
The supply voltage range is 4.5V to 5.5V.
