LT1881 Linear Technology, LT1881 Datasheet - Page 6

• Manufacturer Part Number: LT1881
• Description: Dual and Quad Rail-to-Rail Output/ Picoamp Input Precision Op Amps
• Manufacturer: Linear Technology

LT1881/LT1882
The
Split supply operation V
SYMBOL
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: The inputs are protected by internal resistors and back-to-back
diodes. If the differential input voltage exceeds 0.7V, the input current
should be limited externally to less than 10mA.
Note 3: A heat sink may be required to keep the junction temperature
below absolute maximum.
Note 4: The LT1881C, LT1882C, LT1881I and LT1882I are guaranteed
functional over the operating temperature range of – 40 C to 85 C.
Note 5: The LT1881C and LT1882C are designed, characterized and
expected to meet specified performance from – 40 C to 85 C but are not
tested or QA sampled at these temperatures. The LT1881I and LT1882I are
guaranteed to meet specified performance from – 40 C to 85 C.
ELECTRICAL CHARACTERISTICS
6
TYPICAL PERFOR A CE CHARACTERISTICS
+PSRR
–PSRR
1200
1000
800
600
400
200
0
0
denotes the specifications which apply over the full operating temperature range, otherwise specifications are at T
Supply Current per Amplifier vs
Supply Voltage
4
PARAMETER
Positive Power Supply Rejection Match
Negative Power Supply Rejection Match
TOTAL SUPPLY VOLTAGE (V)
8
12
16
125 C
25 C
–55 C
S
20
= 15V, V
24
W
28
CM
1881/2 G01
32
= 0V unless otherwise noted. (Note 5)
U
36
0.45
0.40
0.35
0.30
0.25
0.20
0.15
0.10
0.05
CONDITIONS
V
1.5V < V
V
– 1.5V < V
0
EE
CC
0
Slew Rate vs Supply Voltage
= – 15V, V
= 15V, V
A
V
4
= –1
CC
TOTAL SUPPLY VOLTAGE (V)
EE
8
< 18V, (Notes 7, 9)
CM
< – 18V, (Notes 7, 9)
CM
12
= 0V,
= 0V,
RISING
FALLING
16
Note 6: This parameter is not 100% tested.
Note 7: Matching parameters are the difference between amplifiers
A and B in the LT1881; and between amplifiers A and D and B and C in the
LT1882.
Note 8: This parameter is the difference between the two noninverting
input bias currents.
Note 9: CMRR and PSRR are defined as follows: CMRR and PSRR are
measured in V/V on each amplifier. The difference is calculated in V/V
and then converted to dB.
20
24
28
1881/2 G02
32
36
0.5
0.4
0.3
0.2
0.1
0
MIN
108
104
–50
Slew Rate vs Temperature
–25
0
TYP
130
130
TEMPERATURE ( C)
25
RISING
FALLING
50
MAX
75
A
= 25 C.
100 125 150
V
V
V
V
S
S
S
S
= 15V
= 5V
= 15V
= 5V
1881/2 G03
UNITS
dB
dB