ISL54400 Datasheet, PDF (12/15 Pages) Intersil Corporation – Low Voltage, Dual SPDT, USB/Audio Switches with Negative Signal Capability

ISL54400, ISL54401, ISL54402
a 2kΩ ±5% pull-up resistor at the D- line in order to meet the
USB connect and disconnect timing requirements.
ISL54402 Operation
The ISL54402 is an audio/data switch. Its logic control is
typical of a standard dual SPDT switch.
The digital control for the ISL54402 are the IN pins (pin 2
and pin 10). These pins are 1.8V logic compatible when
operated with a 3.0V supply. The device has been designed
to have low I_DD current even when the logic voltage is not at
the rail. With V_DD = 5.5V and VIN = 2.85V the ISL54402
draws only 8µA current.
When logic pin IN1 (pin 10) is LOW the NC1 audio switch is
ON and the NO1 USB data switch is OFF. When logic pin
IN1 (pin 10) is HIGH the NC1 audio switch is OFF and the
NO1 USB data switch is ON.
When logic pin IN2 (pin 2) is LOW the NC2 audio switch is
ON and the NO2 USB data switch is OFF. When logic pin
IN2 (pin 2) is HIGH the NC2 audio switch is OFF and the
NO2 USB data switch is ON.
Power for the ISL54402 device is always provided by the DC
voltage source connected at the V_DD pin (pin 1). The V_DD
power supply voltage range is from 1.8V to 5.5V.
Typical Performance Curves T_A = 25°C, Unless Otherwise Specified
0.015
10
R_LOAD = 32Ω
V_LOAD = 0.6V_RMS
RL = 32Ω
FREQ = 1kHz
0.01
1
V_DD = 2.5V
0.1
0.005
V_DD = 3V
0.01
0
20
200
2k
20k
FREQUENCY (Hz)
FIGURE 8. THD+N vs FREQUENCY
0.001
0
10
20
30
40
50
60
70
OUTPUT POWER (mW)
FIGURE 9. THD+N vs POWER
1
GAIN
0
-1
-2
AUDIO
USB
-3
-4 R_L = 50Ω
V_IN = 0.2V_P-P to 2V_P-P
1M
10M
100M
1G
FREQUENCY (Hz)
FIGURE 10. FREQUENCY RESPONSE
Die Characteristics
SUBSTRATE POTENTIAL (POWERED UP):
GND (TDFN Paddle Connection: Tie to GND or Float)
TRANSISTOR COUNT:
98
PROCESS:
Submicron CMOS
12
FN6240.3
July 12, 2006