LT6600-2.5

4

660025i

PI FU CTIO S

to either or both input pins through identical external

differential outputs is 1580

for the 2nd Filter Stage. Its value programs the common

mode voltage of the differential output of the filter. Pin 2 is

a high impedance input, which can be driven from an

external voltage reference, or Pin 2 can be tied to Pin 7 on

the PC board. Pin 2 should be bypassed with a 0.01

µF

ceramic capacitor unless it is connected to a ground plane.

3.3V or 5V supply (Pin 6 grounded) a quality 0.1

µF

ceramic bypass capacitor is required from the positive

supply pin (Pin 3) to the negative supply pin (Pin 6). The

bypass should be as close as possible to the IC. For dual

supply applications, bypass Pin 3 to ground and Pin 6 to

ground with a quality 0.1

µF ceramic capacitor.

the filter differential outputs. Each pin can drive a 100

Ω

and/or 50pF load to AC ground.

supply, see block diagram. For single supply operation,

ceramic capacitor to Pin 6. For dual supply operation, Pin

7 can be bypassed or connected to a high quality DC

ground. A ground plane should be used. A poor ground

will increase noise and distortion. Pin 7 sets the output

common mode voltage of the 1st stage of the filter. It has

a 5.5k

Ω impedance, and it can be overridden with an

external low impedance voltage source.