ltc6404cud-2-trpbf Linear Technology Corporation, ltc6404cud-2-trpbf Datasheet - Page 8

• Manufacturer Part Number: ltc6404cud-2-trpbf
• Description: 600mhz, Low Noise, Ac Precision Fully Differential Input/output Ampli?er/driver
• Manufacturer: Linear Technology Corporation

LTC6404-1
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 LTC6404-1 is in the normal (active) operating mode.
When Pin 1 is pulled a minimum of 2.1V below V
LTC6404-1 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
degradation of amplifi er 2nd harmonic performance. See
the Layout Considerations section for more detail.
8
+
, V
–
(Pins 2, 10, 11 and Pins 3, 9, 12): Power Supply
–100
–110
–100
–120
–30
–40
–50
–60
–70
–80
–90
–20
–40
–60
–80
0
Distortion vs Output Amplitude
0
LTC6404-1 Driving LTC2207
16-Bit ADC
0
V
V
T
R
V
f
A
CM
S
IN
IN
F
= 3V
= 25°C
= R
= 10MHz
= SINGLE-ENDED INPUT
= V
I
10
= 100Ω
1
OCM
HD9
HD2
HD3
= MID-SUPPLY
FREQUENCY (MHz)
V
HD2
20
OUTDIFF
2
V
V
R
V
f
10MHz, 65536 POINT FFT
FUNDAMENTAL = –1dBFS
HD2 = –90.7dBc
HD3 = –86.6dBc
SAMPLE
HD8
CM
S
F
IN
= R
= 3V
= 2V
= V
(V
HD3
30
I
= 100Ω
P-P
3
OCM
P-P
= 105Msps
HD7
)
DIFFERENTIAL
= 1.5V
HD4
40
4
64041 G19
64041 G21
HD5
50
5
+
, the
+
,
V
The voltage on V
voltage level (which is defi ned as the average of the volt-
ages on the OUT
midpoint of an internal resistive voltage divider between
the supplies, developing a (default) mid-supply voltage
potential to maximize output signal swing. In general,
the V
source/reference capable of driving the input impedance
presented by the V
OCM
OCM
(Pin 4): Output Common Mode Reference Voltage.
–100
–120
–20
–40
–60
–80
100
10
0
0.01
1
0
LTC6404-1 Driving LTC2207
16-Bit ADC
Voltage Noise Density vs
Frequency
pin can be over-driven by an external voltage
V
V
T
R
A
CM
S
F
= 25°C
= R
= 3V
= V
10
I
0.1
= 100Ω
OCM
HD9
+
DIFFERENTIAL INPUT
REFERRED
OCM
OCM
FREQUENCY (MHz)
and OUT
= MID-SUPPLY
FREQUENCY (MHz)
HD2
20
COMMON MODE
1
V
V
R
V
f
10MHz, 4092 POINT FFT
FUNDAMENTAL = –1dBFS
HD2 = –98.8dBc
HD3 = –90.2dBc
SAMPLE
CM
S
IN
F
sets the output common mode
pin. On the LTC6404-1, the V
= 3.3V
= R
= 2V
= V
HD3
30
I
= 100Ω
10
OCM
P-P
= 105Msps
–
HD7
pins). The V
DIFFERENTIAL
= 1.7V
HD4
40
100
64041 G20
64041 G22
HD5
50
1000
OCM
pin is the
64041f
OCM