Overview
The AD8332ACPZ-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), an X-AMP® VGA with a 48 dB gain range, and a selectable gain postamplifier with adjustable output limiting.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Number of Channels | 2 | |
| Input Voltage Noise | 0.74 nV/√Hz | |
| Input Current Noise | 2.5 pA/√Hz | |
| 3 dB Small Signal Bandwidth | 100 MHz | |
| 3 dB Large Signal Bandwidth | 90 MHz | |
| Slew Rate (LO gain) | 275 V/µs | |
| Slew Rate (HI gain) | 1100 V/µs | |
| Gain Range (LO gain) | -4.5 dB to +43.5 dB | |
| Gain Range (HI gain) | 7.5 dB to 55.5 dB | |
| Output-Referred Noise | 48 nV/√Hz (typical) | |
| Power Consumption per Channel | 145 mW | |
| Supply Voltage | 5 V | |
| Operating Temperature Range | -40°C to +85°C | |
| Package Type | 32-Lead LFCSP (5mm x 5mm w/ EP) |
Key Features
- Ultralow noise preamplifier (LNA) with voltage noise of 0.74 nV/√Hz and current noise of 2.5 pA/√Hz.
- X-AMP® VGA with 48 dB of gain range and linear-in-dB gain control.
- Selectable gain postamplifier with adjustable output limiting.
- Active input impedance matching and low output-referred noise.
- Optimized for 10-bit/12-bit ADCs with differential signal paths for low distortion and crosstalk.
- Single 5 V supply operation and low power consumption of 145 mW per channel.
- Available in 32-lead LFCSP package for compact design.
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 application of the AD8332ACPZ-R7?
The AD8332ACPZ-R7 is primarily used in ultrasound and sonar systems, as well as in high performance automatic gain control (AGC) systems and I/Q signal processing.
- What is the noise performance of the AD8332ACPZ-R7?
The device features an ultralow noise preamplifier with a voltage noise of 0.74 nV/√Hz and a current noise of 2.5 pA/√Hz.
- What is the gain range of the AD8332ACPZ-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 power consumption per channel of the AD8332ACPZ-R7?
The power consumption per channel is 145 mW.
- What is the operating temperature range of the AD8332ACPZ-R7?
The operating temperature range is -40°C to +85°C.
- What package types are available for the AD8332ACPZ-R7?
The device is available in a 32-lead LFCSP package.
- How does the AD8332ACPZ-R7 optimize for ADCs?
The device is optimized for 10-bit/12-bit ADCs with differential signal paths to minimize distortion and crosstalk.
- What is the slew rate of the AD8332ACPZ-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.
- How is the gain controlled in the AD8332ACPZ-R7?
The gain is controlled through a linear-in-dB gain control interface with a gain scaling factor of 50 dB/V.
- What is the output-referred noise of the AD8332ACPZ-R7?
The output-referred noise is typically 48 nV/√Hz.
- Can the AD8332ACPZ-R7 be used in high-speed applications?
Yes, the device is suitable for high-speed applications, including high speed, dual ADC drivers.
