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LTC221CS#PBF

P1-P3P4-P6P7-P9P10-P12
LTC221/LTC222
1
2212fa
■
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
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.
Micropower, Low Charge
Injection, Quad CMOS Analog
Switches with Data Latches
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
DESCRIPTIO
U
■
Supply Current ..................... I
+
= 40µA, I
–
= 5µA Max
■
Charge Injection
±15V Supplies .................................±25pC Max
Single 5V Supply .................................. 2pC Typ
■
R
ON
............................................................... 65ΩTyp
■
Signal Range ..................................................... ±15V
Two-Channel, 12-Bit, Self Calibrating Data Acquisition System
KEY SPECIFICATIO S
U
LTC221/222 • TA01
5V
R1
15V
IN
–IN
10k
150k 100k
120Ω
270Ω
GND IN3
IN4
WR
WR
TO MICROPROCESSOR
e.g. TMS320C25
IN2
IN1
CS
D
OUT
V
REF
V
FS
CLK
GND
D1S1
D2S2
V
IN
OV TO 5V
V
FS
D3S3
D4S4
5V
V
+
V
–
–15V
15V
LTC221/LTC222
LT1006
+
–
LOGIC
DECODER
LTC1292
12-BIT
ADC
SERIAL PORT
DATA BUS B0 – B3
ADDRESS BUS
LT1027
TYPICAL APPLICATIO
U
LTC221/LTC222
2
2212fa
TOP VIEW
J PACKAGE
16-LEAD CERDIP
N PACKAGE
16-LEAD PDIP
J
MAX
= 110°C, θ
JA
= 120°C/W
S PACKAGE
16-LEAD PLASTIC SO
J
MAX
= 110°C, θ
JA
= 130°C/W
ORDER PART
NUMBER
LTC221CN
LTC221CS
LTC222CN
LTC222CS
LTC221MJ
LTC221CJ
LTC222MJ
LTC222CJ
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
IN1
D1
S1
V
–
GND
S4
D4
IN4
IN2
D2
S2
V
+
WR
S3
D3
IN3
LTC221M/LTC222M LTC221C/LTC222C
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Analog Signal Range
●
±15 ±15 V
R
ON
V
S
= ±10V T
MIN
90 90 Ω
I
D
= 1mA 25°C65906590Ω
T
MAX
135 135 Ω
Off Input Leakage I
S
(OFF) V
D
= 14V, V
S
= ±14V 0.01 ±1 0.01 ±5nA
●
±100 ±100 nA
Off Output Leakage I
D
(0FF) V
IN
= 2.4V, LTC221 0.01 ±1 0.01 ±5nA
V
IN
= 0.8V, LTC222
●
±100 ±100 nA
On Channel Leakage l
D
(ON) V
D
= V
S
= ±14V, V
IN
= 2.4V, LTC222 0.02 ±1 0.02 ±5nA
V
IN
= 0.8V, LTC221
●
±200 ±200 nA
Input High Voltage V
INH
, V
WRH
●
2.4 2.4 V
Input Low Voltage V
INL
, V
WRL
●
0.8 0.8 V
Input High or Low Current V
IN
= 15V, 0V
●
±1 ±1 µA
I
INH
, I
INL
, I
WRH
,
I
WRL
V
WR
= 15V, 0V
C
S
(OFF) 55pF
C
D
(OFF) 12 12 pF
C
D
, C
S
(ON) 30 30 pF
I
+
All Channels On or Off 16 40 16 40 µA
V
IN
= V
WR
= 0V or 4.0V
●
60 60 µA
Voltages Referenced to V
–
V
+
...........................................................................................
44V
GND..................................................................... 25V
Digital Inputs, S, D (Note 2) .......... – 2V to (V
+
2V) or
Digital Inputs, S, D (N2020mA, Whichever Occurs First
Current
Any Input Except S or D ................................... 30mA
Continuous S or D ............................................ 20mA
Peak S or D
(Pulsed at 1 ms, 10% Duty Cycle Max) ......... 70mA
ESD Susceptibility (Note 3) ......................................4kV
Power Dissipation (Plastic) ............................... 500mW
Power Dissipation (Ceramic) ............................. 900mW
Operating Temperature Range
LTC221C/LTC222C .................................. 0°C to 70°C
LTC221M/LTC222M (OBSOLETE).......–55°C to 125°C
Storage Temperature Range ................. – 65°C to 150°C
Lead Temperature (Soldering, 10 sec).................. 300°C
Consult LTC Marketing for parts specified with wider operating temperature ranges.
(Note 1)
ABSOLUTE AXI U RATI GS
WWWU
PACKAGE/ORDER I FOR ATIO
UU
W
INX WR LTC221 LTC222
00 On Off
10 Off On
X1Maintain Previous State Maintain Previous State
DIGITAL A D DC ELECTRICAL CHARACTERISTICS
U
LOGIC TABLE
The
●
denotes the specifications which apply
over full operating temperature range, otherwise specifications are at T
A
= 25
°
C. V
+
= ±15V, V
–
= –15V, GND = 0V, unless noted.
OBSOLETE PACKAGE
Consider the N or S Package for Alternate Source
LTC221/LTC222
3
2212fa
V
+
= 15V, V
–
= –15V, GND = 0V, unless otherwise noted.
LTC221M/LTC222M LTC221C/LTC222C
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
t
ON
V
S
= 2V, R
L
= 1kΩ, C
L
= 35pF 290 400 290 400 ns
t
OFF
210 300 210 300
t
OPEN
20 85 20 85 ns
Off Isolation V
S
= 2Vp-p, R
L
= 1kΩ 75 75 dB
Crosstalk f = 100kHz 90 90
Charge Injection O
INJ
R
GEN
= 0Ω, C
L
= 1000pF, V
GEN
= 0 5 ±25 8 ±25 pC
Total Harmonic Distortion THD V
S
= 2Vp-p, R
L
= 10kΩ 0.01 0.01 %
t
ON
, WR V
S
= 2V, R
L
= 1kΩ, C
L
= 35pF 270 400 270 400 ns
t
OFF
, WR 160 300 160 300
LTC221M/LTC222M LTC221C/LTC222C
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
I
–
0.1 5 0.1 5 µA
●
10 10
LTC221M/LTC222M LTC221C/LTC222C
PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
Analog Signal Range
●
0505 V
R
ON
V
S
= 1.5V, 3V T
MIN
450 520 Ω
I
D
= 0.25mA 25°C 280 450 280 520 Ω
T
MAX
650 650 Ω
Off Input Leakage I
S
(OFF) V
D
= 4V, 1V; V
S
= 1V, 4V 0.01 ±1 0.01 ±5nA
(Note 4)
●
±100 ±100 nA
Off Output Leakage I
D
(0FF) 0.01 ±1 0.01 ±5nA
●
±100 ±100 nA
On Channel Leakage l
D
(ON) V
D
= V
S
= 1V, 4V 0.01 ±1 0.01 ±5nA
(Note 4)
●
±200 ±200 nA
Input High Voltage V
INH
, V
WRH
●
2.4 2.4 V
Input Low Voltage V
INL
, V
WRL
●
0.8 0.8 V
Input High or Low Current V
IN
= 5V, 0V
●
±1 ±1 µA
I
INH
, I
INL
, I
WRH
,
I
WRL
V
WR
= 5V, 0V
C
S
(OFF) 5 5 pF
C
D
(OFF) 12 12 pF
C
D
, C
S
(ON) 30 30 pF
I
+
All Channels On or Off 8 20 8 20 µA
V
IN
= V
WR
= 0V or 4.0V
●
30 30 µA
AC ELECTRICAL CHARACTERISTICS
DIGITAL A D DC ELECTRICAL CHARACTERISTICS
U
DIGITAL A D DC ELECTRICAL CHARACTERISTICS
U
The
●
denotes the specifications which apply
over full operating temperature range, otherwise specifications are at T
A
= 25
°
C. V
+
= ±15V, V
–
= –15V, GND = 0V, unless noted.
The
●
denotes the specifications which apply
over full operating temperature range, otherwise specifications are at T
A
= 25
°
C. V
+
= 5V, V
–
= GND = 0V, unless noted.
P1-P3P4-P6P7-P9P10-P12

LTC221CS#PBF

Mfr. #:
Buy LTC221CS#PBF
Manufacturer:
Analog Devices Inc.
Description:
Analog Switch ICs Latched Quad CMOS SPST Switch
Lifecycle:
New from this manufacturer.
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