LTC1520 Linear Technology, LTC1520 Datasheet - Page 4

• Manufacturer Part Number: LTC1520
• Description: 50Mbps Precision Quad Line Receiver
• Manufacturer: Linear Technology

TYPICAL PERFORMANCE CHARACTERISTICS
LTC1520
PIN
SWITCHI G TI E WAVEFOR S
4
B1 (Pin 1): Receiver 1 Inverting Input.
A1 (Pin 2): Receiver 1 Noninverting Input.
RO1 (Pin 3): Receiver 1 Output.
Enable (Pin 4): Receiver Output Enable Pin. A logic high
input enables the receiver outputs. A logic low input
forces the receiver outputs into a high impedance state.
Do not float.
RO2 (Pin 5): Receiver 2 Output.
A2 (Pin 6): Receiver 2 Noninverting Input.
B2 (Pin 7): Receiver 2 Inverting Input.
GND (Pin 8): Ground Pin. A ground plane is recommended
for all LTC1520 applications.
U
FUNCTIONS
25
20
15
10
OUTPUT
U
5
0
INPUT
0
Propagation Delay (t
vs Input Common Mode
U
T
V
A
ID
= 25 C
= 500mV
t
1
INPUT COMMON MODE (V)
PLH
U
W
2
2.5V
W
V
DD
3
PLH
/2
U
/t
Figure 1. Propagation Delay Test Circuit and Waveforms
PHL
3V
4
LTC1520 G03
)
t
5
PHL
2.5V
W
V
DD
/2
2V
B3 (Pin 9): Receiver 3 Inverting Input.
A3 (Pin 10): Receiver 3 Noninverting Input.
RO3 (Pin 11): Receiver 3 Output.
NC (Pin 12): No Connection.
RO4 (Pin 13): Receiver 4 Output.
A4 (Pin 14): Receiver 4 Noninverting Input.
B4 (Pin 15): Receiver 4 Inverting Input.
V
with a 0.1 F ceramic capacitor as close as possible to the
pin. Recommended: V
1520 F01
DD
(Pin 16): 5V Supply Pin. This pin should be decoupled
46.5
46.0
45.5
45.0
44.5
44.0
43.5
43.0
42.0
42.5
10
CMRR vs Frequency
T
A
INPUT
= 25 C
2.5V
1k
DD
FREQUENCY (Hz)
= 5V 5%.
1/4 LTC1520
–
+
100k
LTC1520 G04
10M
15pF
1520 F01b
OUTPUT