LT6402 Linear Technology Corporation, LT6402 Datasheet - Page 9

• Manufacturer Part Number: LT6402
• Description: 300mhz Low Distortion, Low Noise Differential Ampli?er/ Adc Driver Av = 20db
• Manufacturer: Linear Technology Corporation

BLOCK DIAGRA
PI FU CTIO S
V
voltage. Without additional biasing, both inputs bias to
this voltage as well. This input is high impedance.
V
(Normally Tied to 5V). All three pins must be tied to the
same voltage. Bypass each pin with 1000pF and 0.1µF
capacitors as close to the package as possible. Split
supplies are possible as long as the voltage between V
and V
V
(Normally Tied to Ground). All three pins must be tied to
the same voltage. Split supplies are possible as long as
the voltage between V
not tied to ground, bypass each pin with 1000pF and 0.1µF
capacitors as close to the package as possible.
+OUT, –OUT (Pins 5, 8): Outputs (Unfi ltered). These
pins are high bandwidth, low-impedance outputs. The DC
output voltage at these pins is set to the voltage applied
at V
OCM
CCA
EEA
U
OCM
, V
, V
EE
(Pin 2): This pin sets the output common mode
EEB
CCB
.
is 5V.
U
, V
, V
EEC
CCC
(Pins 4, 9, 12): Negative Power Supply
(Pins 3, 10, 1): Positive Power Supply
U
CC
–INA
–INB
+INA
+INB
and V
W
14
13
16
15
EE
3
is 5V. If these pins are
V
CCA
100Ω
100Ω
100Ω
100Ω
500Ω
500Ω
10
V
CCB
1
–
+
+
–
V
CCC
A
B
500Ω
500Ω
V
V
V
V
CCA
CCB
EEA
EEB
CC
BIAS
11
V
V
ENABLE
CCC
EEC
+OUTFILTERED, –OUTFILTERED (Pins 6, 7): Filtered
Outputs. These pins add a series 50Ω resistor from the
unfi ltered outputs and three 14pF capacitors. Each output
has 14pF to V
(See the Block Diagram). This fi lter has a –3dB bandwidth
of 75MHz.
⎯ E ⎯ N ⎯ A ⎯ B ⎯ L ⎯ E (Pin 11): This pin is a TTL logic input referenced
to the V
typically 30mA of supply current. If high, the LT6402 is
disabled and draws typically 250µA.
+INA, +INB (Pins 15, 16): Positive Inputs. These pins are
normally tied together. These inputs may be DC- or AC-
coupled. If the inputs are AC-coupled, they will self-bias
to the voltage applied to the V
–INA, –INB (Pins 14, 13): Negative Inputs. These pins are
normally tied together. These inputs may be DC- or AC-
coupled. If the inputs are AC-coupled, they will self-bias
to the voltage applied to the V
Exposed Pad (Pin 17): Tie the pad to V
supplies are used, DO NOT tie the pad to ground.
C
+
–
4
V
EEA
EEC
9
pin. If low, the LT6402 is enabled and draws
14pF
14pF
14pF
50Ω
50Ω
V
EE
EEB
V
V
, plus an additional 14pF between each pin
EEA
EEB
12
V
EEC
5
6
2
7
8
+OUT
+OUTFILTERED
V
–OUTFILTERED
–OUT
6402 BD
OCM
OCM
OCM
pin.
pin.
LT6402-20
EEC
(Pin 12). If split
640220fa
9