Datasheet LT1881, LT1882 (Analog Devices) - 7
| 制造商 | Analog Devices |
| 描述 | Dual and Quad Rail-to-Rail Output, Picoamp Input Precision Op Amps |
| 页数 / 页 | 18 / 7 — ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply … |
| 文件格式/大小 | PDF / 310 Kb |
| 文件语言 | 英语 |
ELECTRICAL CHARACTERISTICS. The. denotes the specifi cations which apply over the full operating
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LT1881/LT1882
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 5) C/I Grades H/MP Grades SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
FPBW Full-Power Bandwidth VOUT = 28VP-P 1.47 2.25 1.47 2.25 kHz (Note 10) l 1.13 0.79 kHz ΔVOS Offset Voltage Match (Note 7) 35 70 μV (LT1881A) 0°C < TA < 70°C l 125 μV – 40°C < TA < 85°C l 160 μV Offset Voltage Match (Note 7) 42 125 42 125 μV (LT1881/LT1882) 0°C < TA < 70°C l 175 μV – 40°C < TA < 85°C l 235 μV – 40°C < TA < 125°C l 435 μV – 55°C < TA < 125°C l 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 (Note 7) 200 300 pA (LT1881A) 0°C < TA < 70°C l 400 pA – 40°C < TA < 85°C l 500 pA ΔIB+ Noninverting Bias Current Match (Note 7) 250 700 250 700 pA (LT1881/LT1882) 0°C < TA < 70°C l 900 pA – 40°C < TA < 85°C l 1000 pA – 40°C < TA < 125°C l 2000 pA – 55°C < TA < 125°C l 2000 pA ΔCMRR Common Mode Rejection Match (Notes 7, 9) l 110 125 106 125 dB Δ+PSRR Positive Power Supply V– = – 15V, VCM = 0V, l 108 130 108 130 dB Rejection Ratio Match 1.5V < V+ < 18V, (Notes 7, 9) Δ–PSRR Negative Power Supply V+ = 15V, VCM = 0V, l 104 130 104 130 dB Rejection Ratio Match – 1.5V < V– < – 18V, (Notes 7, 9)
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
This parameter is not 100% tested. may cause permanent damage to the device. Exposure to any Absolute
Note 7:
Matching parameters are the difference between amplifi ers Maximum Rating condition for extended periods may affect device A and B in the LT1881; and between amplifi ers A and D and B and C in the reliability and lifetime. LT1882.
Note 2:
The inputs are protected by internal resistors and back-to-back
Note 8:
This parameter is the difference between the two noninverting diodes. If the differential input voltage exceeds ±0.7V, the input current input bias currents. should be limited externally to less than 10mA.
Note 9:
ΔCMRR and ΔPSRR are defi ned as follows: CMRR and PSRR are
Note 3:
A heat sink may be required to keep the junction temperature measured in μV/V on each amplifi er. The difference is calculated in μV/V below absolute maximum. and then converted to dB.
Note 4:
The LT1881C/LT1882C and LT1881I/LT1882I are guaranteed
Note 10:
Full power bandwidth is calculated from the slew rate: FPBW = functional over the operating temperature range of – 40°C to 85°C. SR/2πVP. 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. 18812fb 7
ELECTRICAL CHARACTERISTICS The
l
denotes the specifi cations which apply over the full operating temperature range, otherwise specifi cations are at TA = 25°C. Split supply operation VS = ±15V, VCM = 0V unless otherwise noted. (Note 5) C/I Grades H/MP Grades SYMBOL PARAMETER CONDITIONS MIN TYP MAX MIN TYP MAX UNITS
FPBW Full-Power Bandwidth VOUT = 28VP-P 1.47 2.25 1.47 2.25 kHz (Note 10) l 1.13 0.79 kHz ΔVOS Offset Voltage Match (Note 7) 35 70 μV (LT1881A) 0°C < TA < 70°C l 125 μV – 40°C < TA < 85°C l 160 μV Offset Voltage Match (Note 7) 42 125 42 125 μV (LT1881/LT1882) 0°C < TA < 70°C l 175 μV – 40°C < TA < 85°C l 235 μV – 40°C < TA < 125°C l 435 μV – 55°C < TA < 125°C l 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 (Note 7) 200 300 pA (LT1881A) 0°C < TA < 70°C l 400 pA – 40°C < TA < 85°C l 500 pA ΔIB+ Noninverting Bias Current Match (Note 7) 250 700 250 700 pA (LT1881/LT1882) 0°C < TA < 70°C l 900 pA – 40°C < TA < 85°C l 1000 pA – 40°C < TA < 125°C l 2000 pA – 55°C < TA < 125°C l 2000 pA ΔCMRR Common Mode Rejection Match (Notes 7, 9) l 110 125 106 125 dB Δ+PSRR Positive Power Supply V– = – 15V, VCM = 0V, l 108 130 108 130 dB Rejection Ratio Match 1.5V < V+ < 18V, (Notes 7, 9) Δ–PSRR Negative Power Supply V+ = 15V, VCM = 0V, l 104 130 104 130 dB Rejection Ratio Match – 1.5V < V– < – 18V, (Notes 7, 9)
Note 1:
Stresses beyond those listed under Absolute Maximum Ratings
Note 6:
This parameter is not 100% tested. may cause permanent damage to the device. Exposure to any Absolute
Note 7:
Matching parameters are the difference between amplifi ers Maximum Rating condition for extended periods may affect device A and B in the LT1881; and between amplifi ers A and D and B and C in the reliability and lifetime. LT1882.
Note 2:
The inputs are protected by internal resistors and back-to-back
Note 8:
This parameter is the difference between the two noninverting diodes. If the differential input voltage exceeds ±0.7V, the input current input bias currents. should be limited externally to less than 10mA.
Note 9:
ΔCMRR and ΔPSRR are defi ned as follows: CMRR and PSRR are
Note 3:
A heat sink may be required to keep the junction temperature measured in μV/V on each amplifi er. The difference is calculated in μV/V below absolute maximum. and then converted to dB.
Note 4:
The LT1881C/LT1882C and LT1881I/LT1882I are guaranteed
Note 10:
Full power bandwidth is calculated from the slew rate: FPBW = functional over the operating temperature range of – 40°C to 85°C. SR/2πVP. 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. 18812fb 7