AD8061 Analog Devices, AD8061 Datasheet - Page 18

• Manufacturer Part Number: AD8061
• Description: Low Cost, 300 MHz Rail-to-Rail Amplifier (Single)
• Manufacturer: Analog Devices

Specifications of AD8061

• -3db Bandwidth: 320MHz
• Slew Rate: 650V/µs
• Vos: 1mV
• Ib: 350nA
• # Opamps Per Pkg: 1
• Input Noise (nv/rthz): 8.5nV/rtHz
• Vcc-vee: 2.7V to 8V
• Isy Per Amplifier: 9.5mA
• Packages: SOIC,SOT

AD8061/AD8062/AD8063
MULTIPLEXER
The AD8063 has a disable pin used to power down the ampli-
fier to save power or to create a mux circuit. If two (or more)
AD8063 outputs are connected together, and only one is enabled,
then only the signal of the enabled amplifier will appear at the
output. This configuration is used to select from various input
signal sources. Additionally, the same input signal is applied to
different gain stages, or differently tuned filters, to make a gain-
step amplifier or a selectable frequency amplifier.
Figure 56 shows a schematic of two AD8063 devices used to
create a mux that selects between two inputs. One of these is a
1 V p-p, 3 MHz sine wave; the other is a 2 V p-p, 1 MHz sine wave.
1V p-p
3MHz
2V p-p
1MHz
BASE
BASE
SELECT
TIME
OUT
TIME
Figure 56. Two-to-One Multiplexer Using Two AD8063s
IN
1kΩ
1kΩ
49.9Ω
49.9Ω
AD8063
AD8063
+4V
–4V
+4V
–4V
0.1µF
0.1µF
0.1µF
0.1µF
HCO4
1
1
1kΩ
1kΩ
10µF
10µF
10µF
10µF
49.9Ω
49.9Ω
V
Rev. G | Page 18 of 20
OUT
The select signal and the output waveforms for this circuit are
shown in Figure 57. For synchronization clarity, two different
frequency synthesizers, whose time bases are locked to each
other, generate the signals.
OUTPUT
SELECT
Figure 57. AD8063 Mux Output
1V
2µs
2V