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部品番号 AD548
部品説明 Low Power BiFET Op Amp
メーカ Analog Devices
ロゴ Analog Devices ロゴ 
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AD548 Datasheet, AD548 PDF,ピン配置, 機能
a
Precision, Low Power
BiFET Op Amp
AD548
FEATURES
Enhanced Replacement for LF441 and TL061
DC Performance:
200 A max Quiescent Current
10 pA max Bias Current, Warmed Up (AD548C)
250 V max Offset Voltage (AD548C)
2 V/؇C max Drift (AD548C)
2 V p-p Noise, 0.1 Hz to 10 Hz
AC Performance:
1.8 V/s Slew Rate
1 MHz Unity Gain Bandwidth
Available in Plastic and Hermetic Metal Can Packages
and in Chip Form
Available in Tape and Reel in Accordance with
EIA-481A Standard
MIL-STD-883B Parts Available
Dual Version Available: AD648
Surface-Mount (SOIC) Package Available
PRODUCT DESCRIPTION
The AD548 is a low power, precision monolithic operational
amplifier. It offers both low bias current (10 pA max, warmed
up) and low quiescent current (200 µA max) and is fabricated
with ion-implanted FET and laser wafer trimming technologies.
Input bias current is guaranteed over the AD548’s entire
common-mode voltage range.
The economical J grade has a maximum guaranteed input offset
voltage of less than 2 mV and an input offset voltage drift of less
than 20 µV/°C. This level of dc precision is achieved utilizing
Analog’s laser wafer drift trimming process. The combination of
low quiescent current and low offset voltage drift minimizes
changes in input offset voltage due to self-heating effects.
The AD548 is recommended for any dual supply op amp applica-
tion requiring low power and excellent dc and ac performance.
In applications such as battery-powered, precision instrument
front ends and CMOS DAC buffers, the AD548’s excellent com-
bination of low input offset voltage and drift, low bias current,
and low 1/f noise reduces output errors. High common-mode
rejection (82 dB, min on the “B” grade) and high open-loop
gain ensures better than 12-bit linearity in high impedance,
buffer applications.
The AD548 is pinned out in a standard op amp configuration
and is available in three performance grades. The AD548J and
AD548K are rated over the commercial temperature range of
0°C to 70°C. The AD548B is rated over the industrial tempera-
ture range of –40°C to +85°C.
The AD548 is available in an 8-lead plastic mini-DIP and
surface-mount (SOIC) packages.
CONNECTION DIAGRAMS
Plastic Mini-DIP (N) Package
and
SOIC (R)Package
OFFSET NULL 1
INVERTING
INPUT
2
NONINVERTING 3
INPUT
V– 4
AD548
TOP VIEW
8 NC
7 V+
6 OUTPUT
5 OFFSET
NULL
NOTE: PIN 4 CONNECTED TO CASE
NC = NO CONNECT
10k
1
5
VOS TRIM
TOP VIEW
4 –15V
PRODUCT HIGHLIGHTS
1. A combination of low supply current, excellent dc and ac
performance and low drift makes the AD548 the ideal op
amp for high performance, low power applications.
2. The AD548 is pin compatible with industry standard op
amps such as the LF441, TL061, and AD542, enabling
designers to improve performance while achieving a reduction
in power dissipation of up to 85%.
3. Guaranteed low input offset voltage (2 mV max) and drift
(20 µV/°C max) for the AD548J are achieved utilizing
Analog Devices’ laser drift trimming technology, eliminating
the need for external trimming.
4. Analog Devices specifies each device in the warmed-up
condition, insuring that the device will meet its published
specifications in actual use.
5. A dual version, the AD648, is also available.
6. Enhanced replacement for LF441 and TL061.
REV. D
Information furnished by Analog Devices is believed to be accurate and
reliable. However, no responsibility is assumed by Analog Devices for its
use, nor for any infringements of patents or other rights of third parties that
may result from its use. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
© Analog Devices, Inc., 2002

--------------------------------------------
AD548 pdf, 電子部品, 半導体, ピン配列
AD548–SPECIFICATIONS (@ 25؇C and VS = ؎15 V dc unless otherwise noted.)
Parameter
INPUT OFFSET VOLTAGE1
Initial Offset
TMIN to TMAX
vs. Temperature
vs. Supply
vs. Supply, TMIN to TMAX
Long-Term Offset Stability
INPUT BIAS CURRENT
Either Input2, VCM = 0
Either Input2 at TMAX, VCM = 0
Max Input Bias Current Over
Common-Mode Voltage Range
Offset Current, VCM = 0
Offset Current at TMAX
INPUT IMPEDANCE
Differential
Common Mode
INPUT VOLTAGE RANGE
Differential3
Common Mode
Common-Mode Rejection
VCM = ± 10 V
TMIN to TMAX
VCM = ± 11 V
TMIN to TMAX
INPUT VOLTAGE NOISE
Voltage 0.1 Hz to 10 Hz
f = 10 Hz
f = 100 Hz
f = 1 kHz
f = 10 kHz
INPUT CURRENT NOISE
f = 1 kHz
FREQUENCY RESPONSE
Unity Gain, Small Signal
Full Power Response
Slew Rate, Unity Gain
Settling Time to ± 0.01%
OPEN LOOP GAIN
VO = ± 10 V, RL 10 k
TMIN to TMAX, RL 10 k
VO = ± 10 V, RL 5 k
TMIN to TMAX, RL 5 k
OUTPUT CHARACTERISTICS
Voltage @ RL 10 k,
TMIN to TMAX
Voltage @ RL 5 k,
TMIN to TMAX
Short Circuit Current
AD548J
Min Typ Max
Min
0.75 2.0
3.0/3.0/3.0
20
80 86
76/76/76
80
15
5 20
0.45/1.3/20
30
5 10
0.25/0.65/10
1 × 1012ʈ3
3 × 1012ʈ3
± 11
76
76/76/76
70
70/70/70
± 20
± 12
90
90
84
84
± 11
82
82
76
76
2
80
40
30
30
1.8
0.8 1.0
30
1.0 1.8
8
0.8
1.0
300
300/300/300
150
150/150/150
1000
700
500
300
300
300
150
150
±12 ±13
± 12/± 12/± 12
±11 ±12.3
± 11/± 11/± 11
15
± 12
± 12
± 11
± 11
AD548K/B
Typ
0.3
15
3
2
1 × 1012ʈ3
3 × 1012ʈ3
± 20
± 12
92
92
86
86
2
80
40
30
30
1.8
1.0
30
1.8
8
1000
700
500
300
± 13
± 12.3
15
Max
0.5
0.7/0.8
5
10
0.25/0.65
15
5
0.15/0.35
Unit
mV
mV
µV/°C
dB
dB
µV/Month
pA
nA
pA
pA
nA
ʈpF
ʈpF
V
V
dB
dB
dB
dB
µV p-p
nV/Hz
nV/Hz
nV/Hz
nV/Hz
fA/Hz
MHz
kHz
V/µs
µs
3V/mV
V/mV
V/mV
V/mV
V
V
mA
–2– REV. D





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