|
|
PDF LT1881 Data sheet ( Hoja de datos )
| Número de pieza | LT1881 | |
| Descripción | Dual and Quad Rail-to-Rail Output/ Picoamp Input Precision Op Amps | |
| Fabricantes | Linear Technology | |
| Logotipo |  |
|
Hay una vista previa y un enlace de descarga de LT1881 (archivo pdf) en la parte inferior de esta página. Total 18 Páginas | ||
|
No Preview Available !
LT1881/LT1882
FEATURES
Dual and Quad
Rail-to-Rail Output, Picoamp
Input Precision Op Amps
DESCRIPTION
n Offset Voltage: 50μV Maximum (LT1881A)
n Input Bias Current: 200pA Maximum (LT1881A)
n Offset Voltage Drift: 0.8μV/°C Maximum
n Rail-to-Rail Output Swing
n Supply Range: 2.7V to 36V
n Operates with Single or Split Supplies
n Open-Loop Voltage Gain: 1 Million Minimum
n 1mA Maximum Supply Current Per Amplifier
n Stable at AV = 1, CL = 1000pF
n Standard Pinouts
n Wide Operating Temperature Range:
–55°C to 125°C (LT1882)
APPLICATIONS
n Thermocouple Amplifiers
n Bridge Transducer Conditioners
n Instrumentation Amplifiers
n Battery-Powered Systems
n Photo Current Amplifiers
L, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear
Technology Corporation. All other trademarks are the property of their respective owners.
The LT®1881 and LT1882 op amps bring high accuracy
input performance to amplifiers with rail-to-rail output
swing. Input bias currents and capacitive load driving
capabilities are superior to the similar LT1884 and LT1885
amplifiers, at the cost of a slight loss in speed. Input
offset voltage is trimmed to less than 50μV and the
low drift maintains this accuracy over the operating
temperature range. Input bias currents are an ultralow
200pA maximum.
The amplifiers work on any total power supply voltage
between 2.7V and 36V (fully specified from 5V to ±15V).
Output voltage swings to within 40mV of the negative
supply and 220mV of the positive supply make these
amplifiers good choices for low voltage single supply
operation.
Capacitive loads up to 1000pF can be driven directly in
unity-gain follower applications.
The dual LT1881 and LT1881A are available with standard
pinouts in S8 and PDIP packages. The quad LT1882 is in a
14-pin SO package. For a higher speed device with similar
DC specifications, see the LT1884/LT1885.
TYPICAL APPLICATION
16-Bit Voltage Output DAC on ± 5V Supply
5V
1.65k
LT1634
4.096V
5V
+
LT1881
–
–5V
R1 RCOM REF
ROFS
LTC®1597
DAC
33pF
5V
–
LT1881
+
–5V
TC VOS Distribution, Industrial Grade
26
24 VS = ±15V
22 40 N8 (1 LOT)
20 144 S8 (2 LOTS)
18 184 TOTAL PARTS
16
14
12
10
8
6
4
2
0
1 –0.9–0.8–0.7–0.6–0.5–0.4–0.3–0.2–0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1
VOUT
–4.096V
INPUT OFFSET VOLTAGE DRIFT (μV/°C)
18812 TA01b
TO 4.096V
18812 TA01a
18812fb
1
1 page  
LT1881/LT1882
ELECTRICAL CHARACTERISTICS The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at TA = 25°C. Single supply operation VS = 5V, 0V; VCM = VS/2 unless otherwise noted.
(Note 5)
SYMBOL PARAMETER
ΔIB+ Noninverting Bias Current Match
(LT1881/LT1882)
ΔCMRR
ΔPSRR
Common Mode Rejection Ratio
Match
Power Supply Rejection Match
(Notes 7, 9)
CONDITIONS
(Note 7)
0°C < TA < 70°C
– 40°C < TA < 85°C
– 40°C < TA < 125°C
– 55°C < TA < 125°C
(Notes 7, 9)
C/I Grades
MIN TYP MAX
250 700
l 900
l 1000
l
l
l 102 125
V– = 0V, VCM = 1.5V
0°C < TA < 85°C, 2.7V < V+ < 32V l 104 126
0°C < TA < 125°C, 2.7V < V+ < 32V l
TA = –40°C, 3V < V+ < 32V
104 126
TA = –55°C, 3V < V+ < 32V
H/MP Grades
MIN TYP MAX
250 700
2000
2000
100 125
102 126
102 126
UNITS
pA
pA
pA
pA
pA
dB
dB
dB
dB
dB
The l denotes the specifications which apply over the full operating temperature range, otherwise specifications 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
VOS Input Offset Voltage
(LT1881A)
Input Offset Voltage
(LT1881/LT1882)
ΔVOS /ΔT
Input Offset Voltage Drift
(Note 6)
ΔVOS /
ΔTIME
Long-Term Input Offset
Voltage Stability
0°C < TA < 70°C
– 40°C < TA < 85°C
0°C < TA < 70°C
– 40°C < TA < 85°C
– 40°C < TA < 125°C
– 55°C < TA < 125°C
0°C < TA < 70°C
– 40°C < TA < 85°C
– 40°C < TA < 125°C
– 55°C < TA < 125°C
25 50
l 85
l 110
30 80
l 125
l 150
l
l
l 0.3 0.8
l 0.3 0.8
l
l
0.3
μV
μV
μV
30 80
300
300
μV
μV
μV
μV
μV
0.3 0.8
0.3 0.8
μV/°C
μV/°C
μV/°C
μV/°C
0.3 μV/month
IOS Input Offset Current (LT1881A)
0°C < TA < 70°C
– 40°C < TA < 85°C
Input Offset Current
(LT1881/LT1882)
0°C < TA < 70°C
– 40°C < TA < 85°C
– 40°C < TA < 125°C
– 55°C < TA < 125°C
IB Input Bias Current (LT1881A)
0°C < TA < 70°C
– 40°C < TA < 85°C
Input Bias Current
(LT1881/LT1882)
0°C < TA < 70°C
– 40°C < TA < 85°C
– 40°C < TA < 125°C
– 55°C < TA < 125°C
100 200
l 250
l 300
150 500
l 600
l 700
l
l
100 200
l 250
l 300
150 500
l 600
l 700
l
l
150 500
2000
2000
150 500
3000
3000
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
pA
18812fb
5
5 Page 
TYPICAL PERFORMANCE CHARACTERISTICS
LT1881/LT1882
Output Saturation Voltage
vs Load Current (Output Low)
10
VS = ±15V
VOVERDRIVE = 30mV
1
0.1
0.01
0.001
0.001
TA = –55°C
TA = –40°C
TA = 25°C
TA = 85°C
TA = 125°C
0.01 0.1
1
SINKING LOAD CURRENT (mA)
10
18812 G27
Output Short-Circuit Current
vs Temperature
60
56
52
48
44
40
36
32 SINKING
28
24
20 SOURCING
16
12
8
4
0
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
18812 G28
Output Voltage
vs Large Input Voltage
VIN
VOUT
AV = 1
VS = ±2.5V
VIN = ±5V
RIN = 10k
GND
GND
18812 G29
Open-Loop Gain vs Frequency
140
130
120
VS = ±15V
110
100
90
80
70
60
50
40
30
20
10
0
–10
–20
0.1 1 10 100 1k 10k 100k 1M 10M100M
FREQUENCY (Hz)
18812 G30
Gain Bandwidth Product
vs Temperature
680
VS = ±15V
660
640
620
600 VS = ±2.5V
580
560
–55 –35 –15 5 25 45 65 85 105 125
TEMPERATURE (°C)
18812 G33
Open-Loop Gain and Phase
vs Frequency
70
60 VS = ±5V
175
150
50 120
40 100
30
PHASE
75
20 50
10
LOOP GAIN
0
25
0
–10 –25
–20 –50
–30
1k
10k 100k 1M
FREQUENCY (Hz)
–100
10M
18812 G31
Channel Separation vs Frequency
–20
VS = ±15V
–40 AV = 10
–60
–80
–100
–120
–140
10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
18812 G32
Output Impedance vs Frequency
100
VS = ±2.5V
10
AV = 100
1
AV = 10
0.1 AV = 1
0.01
0.001
100
1k 10k
FREQUENCY (Hz)
100k
18812 G34
PSRR vs Frequency
140
130
120
110
100
90
80
70
60
50
40
30
20
10
0
–10
1
VS = ±15V
–PSSR
+PSSR
10 100 1k 10k 100k 1M
FREQUENCY (Hz)
18812 G35
18812fb
11
11 Page | ||
| Páginas | Total 18 Páginas | |
| PDF Descargar | [ Datasheet LT1881.PDF ] | |
Hoja de datos destacado
| Número de pieza | Descripción | Fabricantes |
| LT1880 | Picoamp Input Current Precision Op Amp | Linear Technology |
| LT1881 | Dual and Quad Rail-to-Rail Output/ Picoamp Input Precision Op Amps | Linear Technology |
| LT1882 | Dual and Quad Rail-to-Rail Output/ Picoamp Input Precision Op Amps | Linear Technology |
| LT1884 | Dual/Quad Rail-to-Rail Output/ Picoamp Input Precision Op Amps | Linear Technology |
| Número de pieza | Descripción | Fabricantes |
| SLA6805M | High Voltage 3 phase Motor Driver IC. |
 Sanken |
| SDC1742 | 12- and 14-Bit Hybrid Synchro / Resolver-to-Digital Converters. |
 Analog Devices |
|
DataSheet.es es una pagina web que funciona como un repositorio de manuales o hoja de datos de muchos de los productos más populares, |
| DataSheet.es | 2020 | Privacy Policy | Contacto | Buscar |