PS399CSE Pericom Semiconductor, PS399CSE Datasheet - Page 10
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PS399CSE
Manufacturer Part Number
PS399CSE
Description
IC MULTIPLEXER DUAL 4X1 16SOIC
Manufacturer
Pericom Semiconductor
Datasheet
1.PS398CSEE.pdf
(11 pages)
Specifications of PS399CSE
Function
Multiplexer
Circuit
2 x 4:1
On-state Resistance
100 Ohm
Voltage Supply Source
Single, Dual Supply
Voltage - Supply, Single/dual (±)
3 V ~ 15 V, ±3 V ~ 8 V
Current - Supply
1µA
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
16-SOIC (0.154", 3.90mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
Company:
Part Number:
PS399CSE
Manufacturer:
HARRIS
Quantity:
6 237
Part Number:
PS399CSE
Manufacturer:
PERICOM
Quantity:
20 000
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 1 2 3 4 5 6 7 8 9 0 1 2
The table below shows how many time constants (m ) are
needed to reach an accuracy of one LSB.
Now, let’s calculate what the maximum sampling rate for the
PS398. Assume a 12-bit accuracy and room temperature
operation.
Bits
12
15
8
Accuracy (%)
0.25
0.012
0.0017
Figure 10. Equivalent model of one multiplexer channel
11
m
6
9
= R
R
ON
S
V
S
x C
COM(ON)
V
IN
C
COM
1 0
Precision 8-Ch, Diff. 4-Ch, 17V Analog Multiplexers
R
(ON)
In equation (1) above, n = 8, t
Assuming a x4 oversampling rate, the maximum sampling speed
for the PS398 would be 630 4 = 157kHz.
ON
= 100ohm x 54pF
f
S
=
8 [150ns + 9(100ohm x 54pF)]
or f
_______________________ ,
S
C
= 630kHz.
L
1
TRANS
= 150ns, t
SETTLING
PS398/PS399
PS8185F
= 9 ,
09/28/04