Datasheet ADA4930-1-EP (Analog Devices)

Ultralow Noise Drivers for Low Voltage ADCs Enhanced Product ADA4930-1-EP FEATURES FUNCTIONAL BLOCK DIAGRAMS S S S S Low input voltage noise: 1.2 nV/√Hz –V –V –V –V Low common-mode output: 0.9 V on single supply 16 15 14 13 Extremely low harmonic distortion ADA4930-1-EP –FB 1 12 PD HD2/HD3: −104/−101 dBc at 10 MHz +IN 2 11 –OUT HD2/HD3: −79/−82 dBc at 70 MHz –IN 3 10 +OUT HD2/HD3: −73/−75 dBc at 100 MHz +FB 4 9 VOCM High speed −3 dB bandwidth: 1.35 GHz, G = 1 5 6 7 8
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S S S S Slew rate: 3400 V/µs +V +V +V +V
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0.1 dB gain flatness: 380 MHz
Figure 1.
Fast overdrive recovery: 1.5 ns 100 Offset voltage: 0.5 mV typical Externally adjustable gain Differential-to-differential or single-ended-to-differential operation 10 Adjustable output common-mode voltage z) Single-supply operation: 3.3 V or 5 V √H V/ (n ENHANCED PRODUCT FEATURES NV 1 Supports defense and aerospace applications (AQEC standard) Extended temperature range: −55°C to +105°C 105°C Controlled manufacturing baseline 25°C One assembly/test site –55°C 0 One fabrication site
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10 100 1k 10k 100k 1M 10M 100M Enhanced product change notification
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FREQUENCY (Hz) Qualification data available on request
Figure 2. Voltage Noise Spectral Density With the ADA4930-1-EP, differential gain configurations are easily
APPLICATIONS
realized with a simple external feedback network of four resistors
ADC drivers
determining the closed-loop gain of the amplifier.
Single-ended-to-differential converters
The ADA4930-1-EP is fabricated using Analog Devices, Inc.,
IF and baseband gain blocks
proprietary silicon-germanium (SiGe), complementary bipolar
Differential buffers
process, enabling it to achieve very low levels of distortion with
Line drivers
an input voltage noise of only 1.2 nV/√Hz.
GENERAL DESCRIPTION
The low dc offset and excellent dynamic performance of the The ADA4930-1-EP is a very low noise, low distortion, high ADA4930-1-EP make it wel suited for a wide variety of data speed differential amplifier. It is an ideal choice for driving 1.8 V acquisition and signal processing applications. high performance ADCs with resolutions up to 14 bits from dc The ADA4930-1-EP is available in a 3 mm × 3 mm 16-lead LFCSP. to 70 MHz. The adjustable output common-mode voltage setting The pinout has been optimized to facilitate printed circuit board allows the ADA4930-1-EP to match the input of the ADC for (PCB) layout and minimize distortion. The ADA4930-1-EP is maximum dynamic range. The internal common-mode feedback specified to operate over the −55°C to +105°C temperature range for loop provides exceptional output balance, suppression of even- 3.3 V or 5 V supply voltages. order harmonic distortion products, and dc level translation. Additional application and technical information can be found in the ADA4930-1/ADA4930-2 data sheet.
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Document Outline Features Enhanced Product Features Applications General Description Functional Block Diagrams Revision History Specifications 3.3 V Operation 3.3 V VOCM to VO, cm Performance 3.3 V General Performance 5 V Operation 5 V VOCM to VO, cm Performance 5 V General Performance Absolute Maximum Ratings Thermal Resistance Maximum Power Dissipation ESD Caution Pin Configuration and Function Descriptions Outline Dimensions Ordering Guide