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The AD8332 is a dual channel ultralow noise, linear-in-dB, variable gain amplifier (VGA). Optimized for ultrasound systems, they are usable as a low noise variable gain element at frequencies up to 120 MHz.
Included in each channel are an ultralow noise preamplifier (LNA), an X-AMP® VGA with 48 dB of gain range, and a selectable gain postamplifier with adjustable output limiting. The LNA gain is 19 dB with a single-ended input and differential outputs. Using a single resistor, the LNA input impedance can be adjusted to match a signal source without compromising noise performance.
The 48 dB gain range of the VGA makes these devices suitable for a variety of applications. Excellent bandwidth uniformity is maintained across the entire range. The gain control interface provides precise linear-in-dB scaling of 50 dB/V for control voltages between 40 mV and 1 V. Factory trim ensures excellent part-to-part and channel-to-channel gain matching. Differential signal paths result in superb second- and third-order distortion performance and low crosstalk.
The operating temperature range is -40°C to +85°C. The AD8332 is available in a 28-lead TSSOP and 32-lead LFCSP packages.
The AD8332 is a dual version of the single AD8331 and quad AD8334.
Applications
Features and Benefits
| Amplifiers |
| Document | note |
| AD8331/AD8332/AD8334: Ultralow Noise VGAs with Preamplifier and Programmable RIN Data Sheet (Rev. I) | PDF 1.91 M |
| Document | note |
| Part Number | Package | Packing Qty | Temp Range | Price 100-499 | Price 1000+ | RoHS |
|---|---|---|---|---|---|---|
| AD8332ACPZ-R2 Production | 32 ld LFCSP (5x5mm) w/3.1mm exposed pad | REEL 250 | -40 to 85C | 14.58 | 14.58 | Y |
| AD8332ACPZ-R7 Production | 32 ld LFCSP (5x5mm) w/3.1mm exposed pad | REEL 1500 | -40 to 85C | 12.68 | 10.78 | Y |
| AD8332ACPZ-RL Production | 32 ld LFCSP (5x5mm) w/3.1mm exposed pad | REEL 5000 | -40 to 85C | 12.68 | 10.78 | Y |
| AD8332ARU Last Time Buy | 28 ld TSSOP (4.4mm) | OTH 50 | -40 to 85C | 14.32 | 12.18 | N |
| AD8332ARU-REEL7 Last Time Buy | 28 ld TSSOP (4.4mm) | REEL 1000 | -40 to 85C | 14.32 | 12.18 | N |
| AD8332ARUZ Production | 28 ld TSSOP (4.4mm) | OTH 50 | -40 to 85C | 12.68 | 10.78 | Y |
| AD8332ARUZ-R7 Production | 28 ld TSSOP (4.4mm) | REEL 1000 | -40 to 85C | 12.68 | 10.78 | Y |
| AD8332ARUZ-RL Production | 28 ld TSSOP (4.4mm) | REEL 2500 | -40 to 85C | 12.68 | 10.78 | Y |
| Part Number | Description | Price | RoHS |
|---|---|---|---|
| AD8332-EVALZ | Evaluation Board | 148.76 | Y |
