LT1993-4 Linear Technology, LT1993-4 Datasheet - Page 10

• Manufacturer Part Number: LT1993-4
• Description: 900MHz Low Distortion - Low Noise Differential Amplifier/ADC Driver
• Manufacturer: Linear Technology

PI FU CTIO S
LT1993-4
+OUTFILTERED, –OUTFILTERED (Pins 6, 7): Filtered
Outputs. These pins add a series 25Ω resistor from the
unfi ltered outputs and three 12pF capacitors. Each output
has 12pF to V
(See the Block Diagram). This fi lter has a –3dB bandwidth
of 175MHz.
ENABLE (Pin 11): This pin is a TTL logic input referenced
to the V
typically 100mA of supply current. If high, the LT1993-4
is disabled and draws typically 250µA.
BLOCK DIAGRA
10
U
EEC
U
pin. If low, the LT1993-4 is enabled and draws
EE
, plus an additional 12pF between each pin
–INA
–INB
+INA
+INB
14
13
16
15
U
W
3
V
CCA
100Ω
100Ω
100Ω
100Ω
200Ω
200Ω
10
V
CCB
1
–
+
+
–
V
CCC
A
B
200Ω
200Ω
V
V
V
V
CCA
EEA
CCB
EEB
BIAS
11
V
ENABLE
V
CCC
EEC
–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
+INA, +INB (Pins 16, 15): 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
Exposed Pad (Pin 17): Tie the pad to V
supplies are used, DO NOT tie the pad to ground.
C
–
+
4
V
EEA
9
12pF
12pF
12pF
25Ω
25Ω
V
EEB
V
V
EEA
EEB
12
V
EEC
5
6
2
7
8
19934 BD
+OUT
+OUTFILTERED
V
–OUTFILTERED
–OUT
OCM
OCM
OCM
www.DataSheet4U.com
pin.
pin.
EEC
(Pin 12). If split
19934fa