参数资料
| 型号： | LT1881AIS8#TR |
| 厂商： | Linear Technology |
| 文件页数： | 16/18页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP DUAL R-R PICO/IN 8SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 通用 |
| 电路数： | 2 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.4 V/µs |
| 增益带宽积： | 1MHz |
| 电流 - 输入偏压： | 150pA |
| 电压 - 输入偏移： | 25µV |
| 电流 - 电源： | 850µA |
| 电流 - 输出 / 通道： | 40mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 36 V，±1.35 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 8-SO |
| 包装： | 带卷 (TR) |
LT1881/LT1882
7
18812fb
SYMBOL
PARAMETER
CONDITIONS
C/I Grades
H/MP Grades
UNITS
MIN
TYP
MAX
MIN
TYP
MAX
FPBW
Full-Power Bandwidth
VOUT = 28VP-P
(Note 10)
l
1.47
1.13
2.25
1.47
0.79
2.25
kHz
ΔVOS
Offset Voltage Match
(LT1881A)
(Note 7)
0°C < TA < 70°C
– 40°C < TA < 85°C
l
35
70
125
160
μV
Offset Voltage Match
(LT1881/LT1882)
(Note 7)
0°C < TA < 70°C
– 40°C < TA < 85°C
– 40°C < TA < 125°C
– 55°C < TA < 125°C
l
42
125
175
235
42
125
435
μV
Offset Voltage Match Drift
(Notes 6, 7)
l
0.4
1.1
0.4
1.1
μV/°C
ΔIB+
Noninverting Bias Current Match
(LT1881A)
(Note 7)
0°C < TA < 70°C
– 40°C < TA < 85°C
l
200
300
400
500
pA
ΔIB+
Noninverting Bias Current Match
(LT1881/LT1882)
(Note 7)
0°C < TA < 70°C
– 40°C < TA < 85°C
– 40°C < TA < 125°C
– 55°C < TA < 125°C
l
250
700
900
1000
250
700
2000
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, VCM = 0V,
1.5V < V+ < 18V, (Notes 7, 9)
l
108
130
108
130
dB
Δ–PSRR
Negative Power Supply
Rejection Ratio Match
V+ = 15V, VCM = 0V,
– 1.5V < V– < – 18V, (Notes 7, 9)
l
104
130
104
130
dB
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 specied
performance from 0°C to 70°C. The LT1881C/LT1882C are designed,
characterized and expected to meet specied performance from – 40°C
to 85°C but are not tested or QA sampled at these temperatures. The
LT1881I/LT1882I are guaranteed to meet specied performance from
– 40°C to 85°C. The LT1882H is guaranteed to meet specied performance
from –40°C to 125°C. The LT1882MP is guaranteed to meet specied
performance from –55°C to 125°C.
Note 6: This parameter is not 100% tested.
Note 7: Matching parameters are the difference between ampliers
A and B in the LT1881; and between ampliers 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 dened as follows: CMRR and PSRR are
measured in μV/V on each amplier. 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/2πVP.
The
l denotes the specications which apply over the full operating
temperature range, otherwise specications are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted.
(Note 5)
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