Overview
The AD8332ARU-REEL7 is a dual-channel, ultralow noise, linear-in-dB, variable gain amplifier (VGA) produced by Analog Devices Inc. This device is part of the AD8331/AD8332/AD8334 family and is optimized for applications requiring high performance and low noise, particularly in ultrasound systems and high-speed data acquisition.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| 3 dB Small Signal Bandwidth | 100 MHz | |
| 3 dB Large Signal Bandwidth (VOUT = 2 V p-p) | 90 MHz | |
| Slew Rate (LO gain) | 275 V/µs | |
| Slew Rate (HI gain) | 1100 V/µs | |
| Input Voltage Noise (RS = 0 Ω, HI or LO gain) | 0.82 nV/√Hz | |
| Output-Referred Noise (VGAIN = 0.5 V, LO gain) | 40 nV/√Hz | |
| Output-Referred Noise (VGAIN = 0.5 V, HI gain) | 150 nV/√Hz | |
| Power Consumption per Channel | 145 mW | |
| Gain Range (LO gain) | -4.5 dB to +43.5 dB | |
| Gain Range (HI gain) | 7.5 dB to +55.5 dB | |
| Supply Voltage | 5 V |
Key Features
- Ultralow Noise Preamplifier: Voltage noise of 0.74 nV/√Hz and current noise of 2.5 pA/√Hz.
- Wide Gain Range: Programmable gain from -4.5 dB to +43.5 dB in LO gain mode and 7.5 dB to +55.5 dB in HI gain mode.
- Low Power Consumption: 145 mW per channel.
- Active Input Impedance Matching: Optimized for 10-bit/12-bit ADCs.
- Selectable Output Clamping Level: For protecting downstream components.
- Single 5 V Supply Operation: Simplifies power management.
Applications
- Ultrasound and Sonar Time-Gain Controls: Ideal for systems requiring dynamic gain adjustment.
- High Performance Automatic Gain Control (AGC) Systems: Suitable for applications needing precise gain control.
- I/Q Signal Processing: Used in various communication and signal processing systems.
- High Speed, Dual ADC Drivers: Optimized for driving high-speed analog-to-digital converters.
Q & A
- What is the 3 dB bandwidth of the AD8332ARU-REEL7?
The 3 dB small signal bandwidth is 100 MHz, and the 3 dB large signal bandwidth is 90 MHz for VOUT = 2 V p-p.
- What is the slew rate of the AD8332ARU-REEL7 in LO and HI gain modes?
The slew rate is 275 V/µs in LO gain mode and 1100 V/µs in HI gain mode.
- What is the input voltage noise of the AD8332ARU-REEL7?
The input voltage noise is 0.82 nV/√Hz.
- What is the output-referred noise of the AD8332ARU-REEL7 in LO and HI gain modes?
The output-referred noise is 40 nV/√Hz in LO gain mode and 150 nV/√Hz in HI gain mode.
- What is the power consumption per channel of the AD8332ARU-REEL7?
The power consumption is 145 mW per channel.
- What are the gain ranges of the AD8332ARU-REEL7 in LO and HI gain modes?
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 supply voltage requirement for the AD8332ARU-REEL7?
The device operates on a single 5 V supply.
- Is the AD8332ARU-REEL7 optimized for any specific ADCs?
Yes, it is optimized for 10-bit/12-bit ADCs.
- Does the AD8332ARU-REEL7 have selectable output clamping levels?
Yes, it has selectable output clamping levels to protect downstream components.
- What are some typical applications of the AD8332ARU-REEL7?
Typical applications include ultrasound and sonar time-gain controls, high performance AGC systems, I/Q signal processing, and high-speed ADC drivers.
