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PI5A4594A/4595A/4596A/4597A
SOT
INY
Low-Voltage, Single-Supply,
8-Ohm SPST CMOS Analog Switches
Applications Information
Analog Signal Levels
Analog signals can range over the supply voltage (V+ to GND) with ON-resistance changing very little over the entire range. The
PI5A4594A–PI5A4597A are bidirectional, so the NO, NC, and COM pins can be used either as inputs or outputs.
Test Circuits/Timing Diagrams
V+
V
IN
IN
50Ω
NO
or
PI5A4594A
NC
PI5A4595A
PI5A4596A
PI5A4597A
COM
V
NO
or V
NC
= 0
V+
V
IN
0
PI5A4594,
PI5A4596
PI5A4595,
PI5A4597
∆V
OUT
V
OUT
C
L
1000pF
V
OUT
V
OUT
is the Measured Voltage due to Charge Transfer
Error Q when the Channel Turns Off.
Q =
∆V
OUT
x C
L
Figure 2. Charge Injection
V+
t
r
≤
5ns
t
f
≤
5ns
V+
NO
PI5A4594A
PI5A4596A
V
IN
IN
50Ω
COM
R
L
300Ω
V
OUT
C
L
35pF
0
t
ON
V+
V
NO
V
IN
0
50%
V
OUT
90%
90%
t
OFF
V+
NC
PI5A4595A
PI5A4597A
V
IN
IN
50Ω
COM
R
L
300Ω
V
OUT
C
L
35pF
0
t
OFF
V
NC
V
IN
0
50%
V
OUT
90%
90%
t
ON
Figure 3. Switching Times
4
PS8578C
01/05/05
PERICOM [ PERICOM SEMICONDUCTOR CORPORATION ]
