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 offers high switching speed and low on resistance. The on resistance variation is typically less than 0.5 Ω over the input signal range.The bandwidth of the ADG774A is typically 400 MHz 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 construction ensures ultralow power dissipation. The ADG774A operates from a single 3.3 V/5 V supply and is TTL logic-compatible. The control logic for each switch is

shown in the truth table (see Table 5).

FEATURES

Bandwidth: >400 MHz

Low insertion loss and on resistance: 2.2 Ω typical

On resistance flatness: 0.3 Ω 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

Pb-free packages

16-lead QSSOP

16-lead 3 mm × 3 mm body LFCSP

SINGLE SUPPLY

VDD= 5 V ± 10, GND = 0 V, all specifications TMINto TMAX, unless otherwise noted.