Overview
The AD8332ARUZ-R7, produced by Analog Devices Inc., is a dual-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 100 MHz. Each channel includes an ultralow noise preamplifier (LNA) and an X-AMP VGA with a 48 dB gain range, making it suitable for a variety of high-performance applications.
Key Specifications
| Parameter | Value |
|---|---|
| Number of Channels | Dual |
| Gain Range (LO gain) | -4.5 dB to +43.5 dB |
| Gain Range (HI gain) | 7.5 dB to 55.5 dB |
| Input Voltage Noise | 0.74 nV/√Hz (RS = 0 Ω, HI or LO gain, RIZ = ∞, f = 5 MHz) |
| Input Current Noise | 2.5 pA/√Hz (RIZ = ∞, HI or LO gain, f = 5 MHz) |
| Bandwidth | 100 MHz (3 dB small signal bandwidth) |
| Slew Rate | 275 V/µs (LO gain), 1100 V/µs (HI gain) |
| Power Consumption | 145 mW/channel |
| Supply Voltage | Single 5 V |
| Operating Temperature Range | -40°C to +85°C |
| Package Type | 28-Lead TSSOP (4.4mm x 9.7mm) |
Key Features
- Ultralow noise preamplifier with voltage noise of 0.74 nV/√Hz and current noise of 2.5 pA/√Hz.
- Wide gain range with programmable postamp: -4.5 dB to +43.5 dB in LO gain mode and 7.5 dB to 55.5 dB in HI gain mode.
- Low output-referred noise: 48 nV/√Hz typical.
- Active input impedance matching.
- Optimized for 10-bit/12-bit ADCs.
- Selectable output clamping level.
- Single 5 V supply operation.
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 gain range of the AD8332ARUZ-R7 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 input voltage noise of the AD8332ARUZ-R7?
The input voltage noise is 0.74 nV/√Hz (RS = 0 Ω, HI or LO gain, RIZ = ∞, f = 5 MHz).
- What is the bandwidth of the AD8332ARUZ-R7?
The 3 dB small signal bandwidth is 100 MHz.
- What is the power consumption per channel of the AD8332ARUZ-R7?
The power consumption is 145 mW per channel.
- What is the operating temperature range of the AD8332ARUZ-R7?
The operating temperature range is -40°C to +85°C.
- What package types are available for the AD8332ARUZ-R7?
The device is available in a 28-Lead TSSOP (4.4mm x 9.7mm) package.
- What are the typical applications of the AD8332ARUZ-R7?
Typical applications include ultrasound and sonar time-gain controls, high performance AGC systems, I/Q signal processing, and high speed, dual ADC drivers.
- Is the AD8332ARUZ-R7 optimized for any specific type of ADC?
Yes, it is optimized for 10-bit/12-bit ADCs).
- Does the AD8332ARUZ-R7 support single-ended or differential output?
The device supports single-ended output with an output impedance of 5 Ω).
- What is the slew rate of the AD8332ARUZ-R7 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).
