OP-41_15 Datasheet, PDF (1/11 Pages) Analog Devices – LOW BIAS CURRENT HIGH STABILITY JFET OPERATIONAL AMPLIFIER

- ANALOGOEVICES FAX-ON-DEMAND HOTLINE
Page 2
ANALOG
W DEVICES
Low-Bias-CurrenHt,igh-Stability
JFETOperationaAl mplifier
OP-41*
I
FEATURES
. Low Bias Current
5pAMax
._.^{. Low Current Consumption. . . . . . . . . . . . . . . . . 1.0mA Max}
HighGain
1000V/mVMin
High Common-Mode Rejection. . . . . . . . . . . . . 10OdBMin
. Symmetrical Slew-Rates. . . . . . . . . . . . . . . . . :t1.0V/ps Mln
. Low Harmonic Distortion. . . . . . . . . . . . . . <0.01% at 5kHz
. Phase Margin
. AvailableInDieForm
77°Typ
The OP-41 's cascade input stage boosts CMR to over 100dB,
improves CMR linearity, and stabilizes bias current with chang-
ing common-mode voltage. The linear common-mode rejection
of 100dB min is unusually good for a FET input amplifier. The
OP-41 consumes only 750)lA supply current and has a power-
supply rejection ratio of 25)lV/V, making it an ideal choice for
battery-operated systems. Despite the low supply-drain, the
slew-rate is a respectable 1.3V/IlS. and symmetrical Using
zener-zap trimming techniques. offset voltage is adjusted to
below SOOIlVwhich eliminates the need for external nulling in
ORDERING INFORMATION t
= TA 2S"C
Vas MAX
(J.LV)
500
O250
1000
B ₇₅₀
2000
TO-99
OP41AJ-
OP41EJ
OP41BJ-
OP4_-1FJ
PACKAGE
PLASTIC
a-PIN
-
-
-
-
OP41GP
SO
S-PIN
-
-
-
-
OP41GS
OPERATING
TEMPERATURE
RANGE
MIL
INO
MIL
INO
XINO
. ^S For devices processed in total compliance to MIL.STO-883. add /883 after part
O ^{number. Consult factory for 883 data sheet.}
t Burn-in is available on commercial and industrial temperature range parts in
cerdlp. plastic dip, and TO-can packages.
LE _{GENERAL DESCRIPTION}
T_{~E The OP-41 JFET -input op amp features a SpA max bias current}
many applications. The OP-41's guaranteed gain of 1 million
into a 2kH load. combined with the linear 100dB minimum
CMR. vastly improves linearity over competitive low-cost de-
vices. Linearity is excellent in both low-gain and high-gain
amplifier configurations. In voltage follower applications CMR
effects dominate linearity. and in high-gain applications open-
loop gain dominates linearity, hence the performance advantage
of the OP-41.
PIN CONNECTIONS
EPOXYMINI-DIP
NUll
-IN 2
'11'1 3
6 N.C. 7 V'
6 OuT
5 NULL
with an open-loop gain of over 1 million. 77° of phase margin
(P-Suffix)
4 '1- ICASE)
provides exceptional stability, even in unity-gain with capaci-
tive loads. The output is guaranteed stable with 2S0pF loads at
unity-gain, and will typically drive several thousand pF. Tran-
8-PINSO
(S.Suffix)
TO-99
(J-Suffix)
sient response is extremely clean. and is considerably improved
over industry-standard JFET amplifiers.
SIMPLIFIED SCHEMATIC
+v
+IN
-IN
ouT
-v
NULL
NULL
.Manufactured underthe following U.S. patent: 4,538,115.
-1-