Datasheet

LT6003/LT6004/LT6005
20
600345fd
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7417
[phone]
●
FAX: [phone]
●
www.linear.com
 LINEAR TECHNOLOGY CORPORATION 2006
LT 0311 REV D • PRINTED IN USA
RELATED PARTS
TYPICAL APPLICATION
PART NUMBER DESCRIPTION COMMENTS
LT1490A/LT1491A 50µA Dual/Quad Over-The-Top
®
Rail-to-Rail Input
and Output Op Amps
950µV V
OS(MAX)
, Gain Bandwidth = 200kHz
LT1494/LT1495/
LT1496
1.5µA Max Single/Dual/Quad Over-The-Top
Precision Rail-to-Rail Input and Output Op Amps
375µV V
OS(MAX)
, Gain Bandwidth = 2.7kHz
LT1672/LT1673/
LT1674
2µA Max, AV ≥ 5, Single/Dual/Quad Over-The-Top
Precision Rail-to-Rail Input and Output Op Amps
Gain of 5 Stable, Gain Bandwidth = 12kHz
LT1782 Micropower, Over-The-Top, SOT-23, Rail-to-Rail
Input and Output Op Amps
SOT-23, 800µV V
OS(MAX)
, I
S
= 55µA
(MAX)
, Gain Bandwidth = 200kHz,
Shutdown Pin
LT2178/LT2179 17µA Dual/Quad Single Supply Op Amps 120µV V
OS(MAX)
, Gain Bandwidth = 60kHz
LT6000/LT6001/
LT6002
1.8V, 16µA Max Single/Dual/Quad Precision
Rail-to-Rail Op Amps
600µV V
OS(MAX)
, Gain Bandwidth = 50kHz, Shutdown
Over-The-Top is a registered trademark of Linear Technology Corporation.
Gain of –50 Ultralow Power Precision Gas Sensor Amplifier
V
OUT
= 500mV
IN AIR
(DURING READ PHASE)
976k*
–
CITY TECHNOLOGY
MODEL 40X(2)
OXYGEN SENSOR
BURNS 100µA IN AIR
(~21% O
2
)
OXYGEN SENSOR
+
20k
S3A
A
B
B
N
N
S2
S1
GAIN = –50
V
OS
= 5µV TYPICAL (INPUT REFERRED), AVERAGED
I
SUPPLY
= 3µA
V
SUPPLY
= ±0.9V TO ±2.7V
S1, S2: FAIRCHILD FSA1157 (NC)
S3: FAIRCHILD FSA1156 (NO)
CONNECT SWITCH GND PINS TO V
S
–
*20M FOR A
V
= 1000
S1, S2 ARE NORMALLY CLOSED (N = LOW). S3 IS NORMALLY OPEN (N = LOW). A1's OUTPUT OFFSET IS STORED ON C1.
WHEN A READING IS DESIRED, SWITCHES REVERSE STATE, AND A2 ACTS AS A DIFFERENCE AMPLIFIER FROM THE STORED
OFFSET. NULL PHASE SHOULD BE ASSERTED 200ms OR MORE. A2 SETTLES 50ms AFTER READ PHASE IS ASSERTED, WITH
WORST CASE ROOM TEMPERATURE DROOP RATE IS 0.8µV/ms DOMINATED BY ANALOG SWITCH LEAKAGE CURRENT.
C1
0.1µF
X7R
V
S
+
V
S
+
V
S
–
100Ω
600345 TA02
–
+
A1
1/2 LT6004
1M
1%
NULL
READ
1M
1%
20k
–
+
A2
1/2 LT6004
1M
1%
1M
1%
B A
N
V
S
–