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LTC221CJ

Description
电路 IC 开关 16-DIP
Categorysemiconductor    The interface of IC   
File Size138KB,12 Pages
ManufacturerADI
Websitehttps://www.analog.com
Download Datasheet Parametric View All

LTC221CJ Overview

电路 IC 开关 16-DIP

LTC221CJ Parametric

Parameter NameAttribute value
category
MakerADI
series-
PackagePipe fittings
Installation typeThrough hole
Package/casing16-CDIP(0.300",7.62mm)
Supplier device packaging16-DIP
Basic product numberLTC221
LTC221/LTC222
Micropower, Low Charge
Injection, Quad CMOS Analog
Switches with Data Latches
DESCRIPTIO
The LTC
®
221 and LTC222 are micropower, quad CMOS
analog switches which typically dissipate only 250µW
from
±15V
supplies and 40µW from a single 5V supply.
Onboard latches allow the LTC221 and LTC222 to inter-
face directly to most microprocessor buses. The switches
have 65Ω typical on resistance and a very high off resis-
tance. A break before make characteristic is inherent in
these switches to prevent the shorting of two channels.
The signal range is
±15V
with a supply voltage of
±15V
and
0V to 5V with a single 5V supply. The switches have special
charge compensation circuitry which greatly reduces
charge injection to a maximum of
±25pC
(±15V supplies).
The LTC221 and LTC222 are designed for applications
such as microprocessor controlled programmable gain
amplifiers, automatic test equipment, communication
systems, and data acquisition systems. The LTC221 is
normally closed and the LTC222 is normally open as
shown in the Logic Table.
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
Micropower Operation
Single 5V or
±15V
Supply Operation
Low Charge Injection
Low R
ON
Low Leakage
Guaranteed Break Before Make
Latch Resistant Design
TLL/CMOS Compatible
Improved Second Source for DG221/DG222
Microprocessor Bus Compatible
KEY SPECIFICATIO S
Supply Current
Charge Injection
±15V
Supplies .................................
±25pC
Max
Single 5V Supply .................................. 2pC Typ
R
ON
............................................................... 65ΩTyp
Signal Range .....................................................
±15V
..................... I
+
= 40µA, I
= 5µA Max
TYPICAL APPLICATIO
LTC221/LTC222
WR
5V
V
+
GND
V
IN4
IN3
IN2
IN1
V
FS
V
IN
OV TO 5V
S3
S4
D3
D4
S1
S2
D1
D2
Two-Channel, 12-Bit, Self Calibrating Data Acquisition System
WR
LOGIC
DECODER
ADDRESS BUS
DATA BUS B0 – B3
TO MICROPROCESSOR
e.g. TMS320C25
15V
5V
10k IN
+
LT1006
LTC1292
12-BIT
ADC
CLK
D
OUT
CS
SERIAL PORT
100k
150k
–IN
GND
120Ω
–15V
R1 V
REF
270Ω
LT1027
V
FS
15V
LTC221/222 • TA01
U
U
U
2212fa
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