LF147 datasheet(3/13 Pages) NSC

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AC Electrical Characteristics (Note 7)

Symbol

Parameter

Conditions

LF147

LF347B

LF347

Units

Min

Typ

Max

Min

Typ

Max

Min

Typ

Max

Amplifier to Amplifier Coupling

TA=25˚C,

−120

f=1 Hz−20 kHz

(Input Referred)

Slew Rate

VS=±15V, TA=25˚C

V/µs

GBW

Gain-Bandwidth Product

VS=±15V, TA=25˚C

2.2

MHz

Equivalent Input Noise Voltage

TA=25˚C, RS=100Ω,

202020

f=1000 Hz

Equivalent Input Noise Current

Tj=25˚C, f=1000 Hz

0.01

Note 2: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is func-

tional, but do not guarantee specific performance limits.

Note 3: Unless otherwise specified the absolute maximum negative input voltage is equal to the negative power supply voltage.

Note 4: Any of the amplifier outputs can be shorted to ground indefinitely, however, more than one should not be simultaneously shorted as the maximum junction

temperature will be exceeded.

Note 5: For operating at elevated temperature, these devices must be derated based on a thermal resistance of

θjA.

Note 6: The LF147 is available in the military temperature range −55˚C

≤TA≤125˚C, while the LF347B and the LF347 are available in the commercial temperature

range 0˚C

≤TA≤70˚C. Junction temperature can rise to Tj max = 150˚C.

Note 7: Unless otherwise specified the specifications apply over the full temperature range and for VS=±20V for the LF147 and for VS=±15V for the LF347B/LF347.

VOS,IB, and IOS are measured at VCM=0.

Note 8: The input bias currents are junction leakage currents which approximately double for every 10˚C increase in the junction temperature, Tj. Due to limited pro-

duction test time, the input bias currents measured are correlated to junction temperature. In normal operation the junction temperature rises above the ambient tem-

perature as a result of internal power dissipation, PD.Tj=TA+θjA PD where θjA is the thermal resistance from junction to ambient. Use of a heat sink is recommended

if input bias current is to be kept to a minimum.

Note 9: Supply voltage rejection ratio is measured for both supply magnitudes increasing or decreasing simultaneously in accordance with common practice from

VS = ± 5V to ±15V for the LF347 and LF347B and from VS = ±20V to ±5V for the LF147.

Note 10: Refer to RETS147X for LF147D and LF147J military specifications.

Note 11: Max. Power Dissipation is defined by the package characteristics. Operating the part near the Max. Power Dissipation may cause the part to operate out-

side guaranteed limits.

Note 12: Human body model, 1.5 k

Ω in series with 100 pF.

LF147 Datasheet(PDF) 3 Page - National Semiconductor (TI)

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