ADG774A General Description
The ADG774A is a monolithic CMOS device comprising four 2:1 multiplexer/demultiplexers with high impedance outputs. The CMOS process provides low power dissipation yet gives high switching speed and low on resistance. The on-resistance variation is typically less than 0.5? over the input signal range.
The bandwidth of the ADG774A is typically 400MHz and this, coupled with low distortion (typically 0.3%), makes the part suitable for switching of high-speed data signals.
The on-resistance profile is very flat over the full analog input range ensuring excellent linearity and low distortion. CMOS con-struction ensures ultralow power dissipation.
The ADG774A operates from a single 3.3V/5 V supply and is TTL logic compatible. The control logic for each switch is shown in the Truth Table.
These switches conduct equally well in both directions when ON. In the OFF condition, signal levels up to the supplies are blocked. The ADG774A switches exhibit break-before-make switching action.
ADG774A Maximum Ratings
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.3 V to +6 V
Analog, Digital Inputs2 . . . . . . . . . . . 0.3 V to VDD + 0.3 V or
. . . . . . . . . . . . . . . . . . . . . . . 30 mA, Whichever Occurs First
Continuous Current, S or D . . . . . . . . . . . . . . . . . . . . 100 mA
Peak Current, S or D . . . . . . . . . . . . . . . . . . . . . . . . . . 300 mA
(Pulsed at 1 ms, 10% Duty Cycle max)
Operating Temperature Range
Industrial (B Version) . . . . . . . . . . . . . . . . 40°C to +85°C
Storage Temperature Range . . . . . . . . . . . 65°C to +150°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . . . 150°C
QSOP Package, Power Dissipation . . . . . . . . . . . . . . 566 mW
JA Thermal Impedance . . . . . . . . . . . . . . . . . . 149.97°C/W
Lead Temperature, Soldering
Vapor Phase (60 sec) . . . . . . . . . . . . . . . . . . . . . . . . . 215°C
Infrared (15 sec) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 220°C
ADG774A Features
Bandwidth >400 MHz
Low Insertion Loss and On Resistance: 2.2 Typical
On-Resistance Flatness 0.3 Typical
Single 3 V/5 V Supply Operation
Very Low Distortion: <0.3%
Low Quiescent Supply Current (1 nA Typical)
Fast Switching Times
tON 6 ns
tOFF 3 ns
TTL/CMOS Compatible
ADG774A Connection Diagram
Map list: ABCDEFGHIJKLMNOPQRSTUVWXYZ 0123456789All