LT6600 Linear Technology Corporation, LT6600 Datasheet - Page 7

• Manufacturer Part Number: LT6600
• Description: Very Low Noise, Differential Ampli?er And 2.5mhz Lowpass Filter
• Manufacturer: Linear Technology Corporation

PIN FUNCTIONS
IN
be applied to either or both input pins through identical
external resistors, R
to the differential outputs is 1580Ω/R
NC (Pins 2, 5, 11/NA): No Connection
V
for the 2nd Filter Stage. Its value programs the common
mode voltage of the differential output of the fi lter. This
is a high impedance input, which can be driven from an
external voltage reference, or it can be tied to V
PC board. V
capacitor unless it is connected to a ground plane.
V
a single 3.3V or 5V supply (V
ceramic bypass capacitor is required from the positive
supply pin (V
OCM
+
–
and V
and IN
(Pin 3/Pin 2): DC Common Mode Reference Voltage-
–
(Pins 4, 8, 9/Pins 3, 6): Power Supply Pins. For
+
OCM
(Pins 1, 12/Pins 1, 8): Input Pins. Signals can
+
) to the negative supply pin (V
should be bypassed with a 0.01μF ceramic
IN
. The DC gain from differential inputs
(DFN/SO)
–
grounded) a quality 0.1μF
IN
.
–
). The bypass
MID
on the
should be as close as possible to the IC. For dual supply
applications, bypass V
a quality 0.1μF ceramic capacitor.
OUT
are the fi lter differential outputs. Each pin can drive a 100Ω
and/or 50pF load to AC ground.
V
mid-supply, see Block Diagram. For single supply op-
eration, the V
0.01μF ceramic capacitor to V
V
ground. A ground plane should be used. A poor ground
will increase noise and distortion. V
common mode voltage of the 1st stage of the fi lter. It has
a 5.5kΩ impedance, and it can be overridden with an
external low impedance voltage source.
MID
MID
+
can be bypassed or connected to a high quality DC
(Pin 10/Pin 7): The V
and OUT
MID
–
(Pins 6, 7/Pins 4, 5): Output Pins. These
pin should be bypassed with a quality
+
to ground and V
MID
–
. For dual supply operation,
pin is internally biased at
LT6600-2.5
MID
–
sets the output
to ground with
660025fb
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