Low Distortion, High Speed
Rail-to-Rail Input/Output Amplifier
AD8028-KGD-CHIPS
Known Good Die
Many rail-to-rail input amplifiers have an input stage that switches
from one differential pair to another as the input signal crosses a
threshold voltage, which causes distortion. The AD8028-KGD-
CHIPS has a unique feature that allows the user to select the
input crossover threshold voltage through the SELECT pin.
This feature controls the voltage at which the complementary
transistor input pairs switch. The AD8028-KGD-CHIPS also has
intrinsically low crossover distortion. With its wide supply
voltage range (2.7 V to 12 V) and wide bandwidth (190 MHz),
the AD8028-KGD-CHIPS amplifier is designed to work in a
variety of applications where speed and performance are needed on
low supply voltages. The AD8028-KGD-CHIPS has a disable
mode that is controlled via the SELECT pin.
FEATURES
High speed
190 MHz, –3 dB bandwidth (G = +1)
100 V/µs slew rate
Low distortion
120 dBc @ 1 MHz SFDR
80 dBc @ 5 MHz SFDR
Selectable input crossover threshold
Low noise
4.3 nV/√Hz
1.6 pA/√Hz
Low offset voltage: 900 µV max
Low power: 6.5 mA/amplifier supply current
Disable mode
Wide supply range: 2.7 V to 12 V
Known good die (KGD): these die are fully guaranteed to
data sheet specifications
The AD8028-KGD-CHIPS is rated to work over the industrial
temperature range of –40°C to +125°C.
Additional application and technical information can be found
in the AD8028 data sheet.
APPLICATIONS
Filters
ADC drivers
Level shifting
Buffering
Professional video
Low voltage instrumentation
GENERAL DESCRIPTION
The AD8028-KGD-CHIPS1 is a high speed amplifier with rail-
to-rail input and output that operates on low supply voltages and
is optimized for high performance and wide dynamic signal
range. The AD8028-KGD-CHIPS has low noise (4.3 nV/√Hz,
1.6 pA/√Hz) and low distortion (120 dBc at 1 MHz). In
applications that use a fraction of or the entire input dynamic
range and require low distortion, the AD8028-KGD-CHIPS is
an ideal choice.
1Protected by U.S. patent numbers 6,486,737B1; 6,518,842B1
Rev. A
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