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LF355D Datasheet(Hoja de datos) 4 Page - STMicroelectronics

No. de Pieza. LF355D
Descripción  WIDE BANDWIDTH SINGLE J-FET OPERATIONAL AMPLIFIERS
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Fabricante  STMICROELECTRONICS [STMicroelectronics]
Página de inicio  http://www.st.com
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Notes : 1. Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage.
2. The temperature coefficient of the adjusted input offset voltage changes only a small amount (0.5
µV/oC typically) for each mV
of adjustment from its original unadjusted value. Common-mode rejection and open loop voltage gain are alsounaffected by
offset adjustment.
3. The input bias currents are junction leakage currents which approximately double for every 10
oC increase in the junction
temperature Tamb. Due to limited production test time, the input bias current measured is correlated to junction temperature.
In a normal operation the junction temperature rises above the ambient temperature as a result of internal power dissipation,
Ptot-Tamb =Tamb +Rth(j-a)xPtot where Rth(j-a)is the thermal resistance from junction to ambient. Use of a heatsink is recommended
f input currents are to be kept to a minimum.
4. Supply voltage rejection is measured for both supply magnitudes increasing or decreasing simultaneously, in accordance with
common practise.
5. Settling time is defined here, for a unity gain inverter connection using 2k
Ω resistors for the LF155, LF156 series. It is the time
required for the error voltage (the voltage at the inverting input pin on the amplifier) to settle to within 0.01% of its final value from
the time a 10V step input is applied to the inverter. For the LF157 series AV = -5, the feedback resistor from output to input is 2k
and the output step is 10V.
ELECTRICAL CHARACTERISTICS
LF355, LF356, LF357
0
oC
≤ Tamb ≤ +70oCVCC = ±15V, (unless otherwise specified)
Symbol
Parameter
LF355 - LF356 - LF357
Unit
Min.
Typ.
Max.
Vio
Input Offset Voltage (RS =50
Ω)
Tamb =25
oC
Tmin.
≤ Tamb ≤ Tmax.
310
13
mV
Iio
Input Offset Current - (note 3)
Tamb =25
oC
Tmin.
≤ Tamb ≤ Tmax.
350
2
pA
nA
Iib
Input Bias Current - (note 3)
Tamb =25
oC
Tmin.
≤ Tamb ≤ Tmax.
20
200
8
pA
nA
Avd
Large Signal Voltage Gain (RL =2k
Ω,VO = ±10V)
Tamb =25
oC
Tmin.
≤ Tamb ≤ Tmax.
25
15
200
V/mV
SVR
Supply Voltage Rejection Ratio - (note 4)
80
100
dB
ICC
Supply Current (no load)
Tamb =25
oC
LF355
LF356, LF357
2
5
4
10
mA
DVio
Input Offset Voltage Drift (RS =50
Ω) - (note 2)
5
µV/oC
DVio/Vio
Change in Average Temperature Coefficient with Vio adjust
(RS =50
Ω)
0.5
µV/oC
per mV
Vicm
Input Common Mode Voltage Range (Tamb =25
oC)
±10
+15.1
-12
V
CMR
Common Mode Rejection Ratio
80
100
dB
±VOPP
Output Voltage Swing
RL = 10k
RL =2k
±12
±10
±13
±12
V
GBP
Gain Bandwidth Product Tamb =25
oC)
LF355
LF356
LF357
2.5
5
20
MHz
SR
Slew Rate (Tamb =25
oC)
AV = 1
LF355
LF356
AV = 5
LF357
5
12
50
V/
µs
Ri
Input Resistance (Tamb =25
oC)
10
12
Ci
Input Capacitance (Tamb = 25
oC)
3
pF
en
Equivalent Input Noise Voltage (Tamb =25
oC, RS = 100
Ω)
f = 1000Hz
LF355
LF356, LF357
f = 100Hz
LF355
LF356, LF357
20
12
25
15
nV
√
Hz
in
Equivalent Input Noise Current
(Tamb =25
oC, f = 100Hz or f = 1000Hz)
0.01
pA
√
Hz
ts
Settling Time (Tamb =25
oC) - (note 5)
LF355
LF356, LF357
4
1.5
µs
LF155 - LF156 - LF157
4/14




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