LTC6403-1 Linear Technology, LTC6403-1 Datasheet - Page 8

• Manufacturer Part Number: LTC6403-1
• Description: Low Power Fully Differential Input/Output Amplifier/Driver
• Manufacturer: Linear Technology

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LTC6403-1
TYPICAL PERFORMANCE CHARACTERISTICS
PIN FUNCTIONS
⎯ S ⎯ H ⎯ D ⎯ N (Pin 1): When ⎯ S ⎯ H ⎯ D ⎯ N is fl oating or directly tied to V
the LTC6403-1 is in the normal (active) operating mode.
When Pin 1 is pulled a minimum of 2.1V below V
LTC6403-1 enters into a low power shutdown state. See
Applications Information for more details.
V
Pins. Three pairs of power supply pins are provided to keep
the power supply inductance as low as possible to prevent
any degradation of amplifi er 2nd harmonic performance. It
is critical that close attention be paid to supply bypassing.
For single supply applications (Pins 3, 9 and 12 grounded)
it is recommended that high quality 0.1μF surface mount
8
+
, V
–
(Pins 2, 10, 11 and Pins 3, 9, 12): Power Supply
Large Signal Step Response
V
V
S
IN
= 3V, R
= 2V
P-P
LOAD
DIFFERENTIAL
= 800Ω
20ns/DIV
–OUT
+OUT
64031 G23
+
, the
+
,
ceramic bypass capacitors be placed between Pins 2 and
3, between Pins 11 and 12, and between Pins 10 and 9
with direct short connections. Pins 3, 9 and 10 should be
tied directly to a low impedance ground plane with minimal
routing. For dual (split) power supplies, it is recommended
that at least two additional high quality, 0.1μF ceramic
capacitors are used to bypass pin V
ground, again with minimal routing. For driving large loads
(<200Ω), additional bypass capacitance may be needed for
optimal performance. Keep in mind that small geometry
(e.g. 0603) surface mount ceramic capacitors have a much
higher self resonant frequency than do leaded capacitors,
and perform best in high speed applications.
3.0
2.5
1.0
2.0
1.5
0.5
0
Overdrive Transient Response
V
V
S
OCM
= 3V
–OUT
+OUT
50ns/DIV
= 1.5V
+
to ground and V
64031 G24
64031f
–
to