LT1881/LT1882
7
18812fb
SYMBOL PARAMETER CONDITIONS
C/I Grades H/MP Grades
UNITSMIN TYP MAX MIN TYP MAX
FPBW Full-Power Bandwidth V
OUT
= 28V
P-P
(Note 10)
l
1.47
1.13
2.25 1.47
0.79
2.25 kHz
kHz
ΔV
OS
Offset Voltage Match
(LT1881A)
(Note 7)
0°C < T
A
< 70°C
–40°C < T
A
< 85°C
l
l
35 70
125
160
μV
μV
μV
Offset Voltage Match
(LT1881/LT1882)
(Note 7)
0°C < T
A
< 70°C
–40°C < T
A
< 85°C
–40°C < T
A
< 125°C
–55°C < T
A
< 125°C
l
l
l
l
42 125
175
235
42 125
435
435
μV
μV
μV
μV
μV
Offset Voltage Match Drift (Notes 6, 7)
l
0.4 1.1 0.4 1.1 μV/°C
ΔI
B
+
Noninverting Bias Current Match
(LT1881A)
(Note 7)
0°C < T
A
< 70°C
–40°C < T
A
< 85°C
l
l
200 300
400
500
pA
pA
pA
ΔI
B
+
Noninverting Bias Current Match
(LT1881/LT1882)
(Note 7)
0°C < T
A
< 70°C
–40°C < T
A
< 85°C
–40°C < T
A
< 125°C
–55°C < T
A
< 125°C
l
l
l
l
250 700
900
1000
250 700
2000
2000
pA
pA
pA
pA
pA
ΔCMRR
Common Mode Rejection Match (Notes 7, 9)
l
110 125 106 125 dB
Δ+PSRR
Positive Power Supply
Rejection Ratio Match
V
–
= –15V, V
CM
= 0V,
1.5V < V
+
< 18V, (Notes 7, 9)
l
108 130 108 130 dB
Δ–PSRR
Negative Power Supply
Rejection Ratio Match
V
+
= 15V, V
CM
= 0V,
–1.5V < V
–
< –18V, (Notes 7, 9)
l
104 130 104 130 dB
ELECTRICAL CHARACTERISTICS ELECTRICAL CHARACTERISTICS
Note 1: Stresses beyond those listed under Absolute Maximum Ratings
may cause permanent damage to the device. Exposure to any Absolute
Maximum Rating condition for extended periods may affect device
reliability and lifetime.
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 and LT1881I/LT1882I are guaranteed
functional over the operating temperature range of –40°C to 85°C.
The LT1882H is guaranteed functional over the operating temperature
range –40°C to 125°C. The LT1882MP is guaranteed functional over the
operating temperature range –55°C to 125°C.
Note 5: The LT1881C/LT1882C are guaranteed to meet specifi ed
performance from 0°C to 70°C. The LT1881C/LT1882C are designed,
characterized and expected to meet specifi ed performance from – 40°C
to 85°C but are not tested or QA sampled at these temperatures. The
LT1881I/LT1882I are guaranteed to meet specifi ed performance from
–40°C to 85°C. The LT1882H is guaranteed to meet specifi ed performance
from –40°C to 125°C. The LT1882MP is guaranteed to meet specifi ed
performance from –55°C to 125°C.
Note 6: This parameter is not 100% tested.
Note 7: Matching parameters are the difference between amplifi ers
A and B in the LT1881; and between amplifi ers 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: ΔCMRR and ΔPSRR are defi ned as follows: CMRR and PSRR are
measured in μV/V on each amplifi er. The difference is calculated in μV/V
and then converted to dB.
Note 10: Full power bandwidth is calculated from the slew rate: FPBW =
SR/2πV
P.
The l denotes the specifi cations which apply over the full operating
temperature range, otherwise specifi cations are at T
A
= 25°C. Split supply operation V
S
= ±15V, V
CM
= 0V unless otherwise noted.
(Note 5)
