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Features
- Ultralow noise preamplifier (preamp)
- Voltage noise = 0.74 nV/√Hz
- Current noise = 2.5 pA/√Hz
- 3 dB bandwidth: 100 MHz
- Low power: 145 mW/channel
- Wide gain range with programmable postamp
- −4.5 dB to +43.5 dB in LO gain mode
- 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
- AD8332 and AD8334 available in lead frame chip scale package
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The AD8334 is an ultralow noise, quad channel linear-in-dB variable gain amplifier (VGA). Although optimized for ultrasound systems, it may be used as a low noise variable gain control in any application whose operating frequency is less than 100 MHz.
Included in each channel are an ultralow noise preamp (LNA), an X-AMP® VGA with 48 dB of gain range, and a selectable gain postamp 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 AD8334 is a quad version of the single AD8331 and dual AD8332.
For information on specs, see the AD8331/AD8332/AD8334 datasheet.
Applications
- Ultrasound and sonar time-gain controls
- High performance automatic gain control (AGC) systems
- I/Q signal processing
- High speed, dual ADC drivers
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AD8334
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ADI has always placed the highest emphasis on delivering products that meet the maximum levels of quality and reliability. We achieve this by incorporating quality and reliability checks in every scope of product and process design, and in the manufacturing process as well. "Zero defects" for shipped products is always our goal. View our quality and reliability program and certifications for more information.
| Part Model | Pin/Package Drawing | Documentation | CAD Symbols, Footprints, and 3D Models |
|---|---|---|---|
| AD8334ACPZ |
64-Lead LFCSP (9mm x 9mm w/ EP)
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| AD8334ACPZ-REEL |
64-Lead LFCSP (9mm x 9mm w/ EP)
|
|
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| AD8334ACPZ-REEL7 |
64-Lead LFCSP (9mm x 9mm w/ EP)
|
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- AD8334ACPZ
- Pin/Package Drawing
-
64-Lead LFCSP (9mm x 9mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD8334ACPZ-REEL
- Pin/Package Drawing
-
64-Lead LFCSP (9mm x 9mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
- AD8334ACPZ-REEL7
- Pin/Package Drawing
-
64-Lead LFCSP (9mm x 9mm w/ EP)
- Documentation
-
HTML
Material Declaration
-
HTML
Reliablity Data
- CAD Symbols, Footprints, and 3D Models
-
Ultra Librarian
-
SamacSys
Filter by Model
Part Models
Product Lifecycle
PCN
Jun 9, 2021
- 20_0126
Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
AD8334ACPZ
AD8334ACPZ-REEL
AD8334ACPZ-REEL7
Mar 14, 2011
- 11_0045
Addition of STATSChipPAC Malaysia as an Alternate Test Site for LFCSP packages.
AD8334ACPZ
AD8334ACPZ-REEL
AD8334ACPZ-REEL7
Sep 9, 2009
- 07_0083
Polyimide Change
AD8334ACPZ
AD8334ACPZ-REEL
AD8334ACPZ-REEL7
Mar 23, 2009
- 09_0041
ADWIL Fab XFCB2 Front End Manufacturing Change
AD8334ACPZ
AD8334ACPZ-REEL
AD8334ACPZ-REEL7
Filter by Model
Part Models
Product Lifecycle
PCN
Jun 9, 2021
- 20_0126
Conversion of Select Sizes LFCSP Products from Punched to Sawn and Transfer of Assembly Site to ASE Korea
AD8334ACPZ
AD8334ACPZ-REEL
AD8334ACPZ-REEL7
Mar 14, 2011
- 11_0045
Addition of STATSChipPAC Malaysia as an Alternate Test Site for LFCSP packages.
Sep 9, 2009
- 07_0083
Polyimide Change
AD8334ACPZ
AD8334ACPZ-REEL
AD8334ACPZ-REEL7
Mar 23, 2009
- 09_0041
ADWIL Fab XFCB2 Front End Manufacturing Change
Software & Part Ecosystem
Evaluation Kits 1
EVAL-AD8334
AD8334 Evaluation Board
Product Detail
The board is shipped assembled and tested, and users need to only connect the signal and VGAIN sources and a single 5 V power supply.The AD8332-EVALZ is lead free and RoHS compliant.
Refer to AD8334 data sheet for configuring the input impedance and further details.
Evaluation Kits1
Tools & Simulations 1
SPICE Model 2
SPICE Model
