4

LTC1520

FREQUENCY (Hz)

10

42.0

42.5

43.5

44.0

44.5

46.5

LTC1520 G04

43.0

1k

100k

10M

45.0

45.5

46.0

CMRR vs Frequency

INPUT COMMON MODE (V)

0

0

15

2

4

5

LTC1520 G03

10

5

13

20

25

Figure 1. Propagation Delay Test Circuit and Waveforms

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.

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.

with a 0.1

µF ceramic capacitor as close as possible to the

vs Input Common Mode

SWITCHI G TI E WAVEFOR S

–

+

INPUT

2.5V

OUTPUT

15pF

1520 F01b

1/4 LTC1520

2.5V

2.5V

3V

2V

INPUT

OUTPUT

1520 F01