LT1794ISW Ver la hoja de datos (PDF) - Linear Technology
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LT1794ISW Datasheet PDF : 20 Pages
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LT1794
ELECTRICAL CHARACTERISTICS
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: Applies to short circuits to ground only. A short circuit between
the output and either supply may permanently damage the part when
operated on supplies greater than ±10V.
Note 3: The LT1794C is guaranteed to meet specified performance from
0°C to 70°C and is designed, characterized and expected to meet these
extended temperature limits, but is not tested at – 40°C and 85°C. The
LT1794I is guaranteed to meet the extended temperature limits.
Note 4: Thermal resistance varies depending upon the amount of PC board
metal attached to the device. If the maximum dissipation of the package is
exceeded, the device will go into thermal shutdown and be protected.
Note 5: Guaranteed by the CMRR tests.
Note 6: RBIAS is connected between V + and the SHDN pin.
Note 7: Slew rate is measured at ±5V on a ±10V output signal while
operating on ±15V supplies and ±1V on a ±3V output signal while
operating on ±5V supplies.
TYPICAL PERFOR A CE CHARACTERISTICS
Supply Current
vs Ambient Temperature
15
VS = ±12V
14 RBIAS = 24.9k TO SHDN
13 VSHDNREF = 0V
12
11
10
9
8
7
6
5
–50 –30 –10 10 30 50
TEMPERATURE (°C)
70 90
1794 G01
Input Noise Spectral Density
100
100
TA = 25°C
VS = ±12V
IS PER AMPLIFIER = 10mA
10
en
10
1
in
1
0.1
1
10
100
1k
10k
FREQUENCY (Hz)
0.1
100k
1794 G04
Input Common Mode Range
vs Supply Voltage
V+
TA = 25°C
–0.5 ∆VOS > 1mV
–1.0
–1.5
–2.0
2.0
1.5
1.0
0.5
V–
2
4
6
8 10 12 14
SUPPLY VOLTAGE (±V)
1794 G02
Output Short-Circuit Current
vs Ambient Temperature
800
780
VS = ±12V
IS PER AMPLIFIER = 10mA
760
740
720
700
SINKING
680
SOURCING
660
640
620
600
–50 –30 –10 10 30 50 70 90
TEMPERATURE (°C)
1794 G05
Input Bias Current
vs Ambient Temperature
200
VS = ±12V
180 IS PER AMPLIFIER = 10mA
160
140
120
100
80
60
40
20
0
–50 –30 –10 10 30 50
TEMPERATURE (°C)
70 90
1794 G03
Output Saturation Voltage
vs Ambient Temperature
V+
VS = ±12V
–0.5
–1.0
–1.5
RL = 100Ω
ILOAD = 250mA
1.5
ILOAD = 250mA
1.0
0.5
RL = 100Ω
V–
– 50 –30
–10 10 30 50
TEMPERATURE (°C)
70 90
1794 G06
4
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