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LTC202CS 数据表(PDF) 6 Page - Linear Technology

部件名 LTC202CS
功能描述  Micropower, Low Charge Injection, Quad CMOS Analog Switches
PDF  16 Pages
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制造商  LINER [Linear Technology]
网页  http://www.linear.com
标志 LINER - Linear Technology

LTC202CS 数据表(HTML) 6 Page - Linear Technology

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LTC201A/LTC202/LTC203
6
201a23fb
Switching Time Test Circuit
Switch output waveform shown for VS = constant with
logic input waveform as shown. Note that VS may be + or
– as per switching time test circuit. VO is the steady state
output switch on. Feedthrough via gate capacitance may
result in spikes at leading and trailing edge of output
waveform.
Charge Injection Test Circuit
RGEN
VGEN
VO
SX
DX
INX
CL =
1000pF
LT201_202_203 • AI03
3V
3V
NC
NO
ON
ON
ON
ON
OFF
OFF
0V
VO
∆ VO
∆ VO IS THE MEASURED VOLTAGE ERROR DUE TO CHARGE INJECTION.
THE ERROR VOLTAGE IN COULOMBS IS ∆Q = CL • ∆VO
0V
LT201_202_203 • AI04
Switching Time Test Circuit
LT201_202_203 • AI01
3V
50%
50%
0V
0.9
0.9
3V
0V
VS
VO
VO
tON
tOFF
0V
NO
LOGIC INPUT
tr < 20ns
tf < 20ns
NC
LOGIC INPUT
tr < 20ns
tf < 20ns
SWITCH
INPUT
SWITCH
OUTPUT
LOGIC “1” = SW ON
LOGIC “0” = SW ON
LT201_202_203 • AI02
VS = 2V
VO
VO
RL
RL
RL
CL
S1
D1
IN1
LOGIC
INPUT
SWITCH
INPUT
SWITCH
OUTPUT
(REPEAT TEST FOR IN2, IN3 AND IN4)
1kΩ
35pF
= VS
+ rDS(ON)
APPLICATIO S I FOR ATIO



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