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參數(shù)資料
| 型號(hào)： | LTC222 |
| 廠商： | LINEAR TECHNOLOGY CORP |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Micropower, Low Charge Injection, Quad CMOS Analog Switches with Data Latches |
| 中文描述： | 4-CHANNEL, SGL POLE SGL THROW SWITCH |
| 文件頁數(shù)： | 5/12頁 |
| 文件大小： | 140K |
| 代理商： | LTC222 |
LTC221/LTC222
5
2212fa
Switching Time Test Circuit
Switch output waveform shown for V
S
= constant with
logic input waveform as shown. Note that V
S
may be (+)
or (–) as per switching time test circuit. V
O
is the steady
APPLICATIOU
W
U
U
state output switch on. Feedthrough via gate capacitance
may result in spikes at leading and trailing edge of output
waveform.
CCRR-Channel to Channel Crosstalk Test Circuit
Switching Time Test Circuit
Charge Injection Test Circuit
OIRR-Off Isolation Test Circuit
LTC221/222 AI01
V
S
OV
OV
OV
3V
3V
LTC222
LOGIC INPUT
t
r
< 20ns
t
r
< 20ns
LTC221
LOGIC INPUT
t
r
< 20ns
t
r
< 20ns
SWITCH
INPUT
SWITCH
OUTPUT
50%
50%
V
O
0.9
0.9
LOGIC "0" = SW ON
LOGIC "1" = SW ON
V
O
t
ON
t
OFF
LTC221/222 AI02
S1
D1
(REPEAT TEST FOR IN2, IN3 AND IN4)
V
O
C
35pF
R
L
1k
R
L
R
L
+ R
DS(ON)
V
O
= V
S
IN1
SWITCH
OUTPUT
SWITCH
INPUT
V
S
= 2V
LOGIC
INPUT
LTC221/222 AI03
SX
R
GEN
V
GEN
DX
INX
V
O
C
L
= 1000pF
LTC221/222 AI04
OV
OV
3V
3V
V
O
LTC221 INX
LTC222 INX
V
O
V
IS THE MEASURED VOLTAGE ERROR DUE TO CHARGE INJECTION.
THE ERROR VOLTAGE IN COULOMBS IS
Q = V
L
V
O
OFF
OFF
ON
ON
ON
ON
LTC221/222 AI05
V
S
V
+
V
–
C
OIRR = 20 LOG
C = 0.001
μ
F//0.1
μ
F
CHIP CAPACITORS
SIGNAL
GENERATOR
C
15V
–15V
V
D
GND
V
IN
INX
V
S
V
D
R
L
1k
V
= 2V
P-P
f = 100kHz
CHAN A
ANALYZER
CHAN B
LTC221/222 AI06
V
S1
V
+
V
–
C
OIRR = 20 LOG
C = 0.001
μ
F//0.1
μ
F
CHIP CAPACITORS
SIGNAL
GENERATOR
C
NC
50
15V
–15V
V
D2
V
S2
V
D1
V
L
GND
V
IN
V
IN2
IN1
V
S1
V
D2
R
L
1k
V
= 2Vp-p
f = 100kHz
CHAN A
ANALYZER
CHAN B
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