Analog Devices OP249FZ, OP249GS, OP249GS-REEL7, OP249GS-REEL, OP249GP, OP249AZ Datasheet
Specifications and Main Features
Frequently Asked Questions
User Manual
Dual, Precision
a
JFET High-Speed Operational Amplifier
FEATURES
Fast Slew Rate: 22 V/s Typ
Settling Time (0.01%): 1.2 s Max
Offset Voltage: 300 V Max
High Open-Loop Gain: 1000 V/mV Min
Low Total Harmonic Distortion: 0.002% Typ
Improved Replacement for AD712, LT1057, OP215,
TL072, and MC34082
APPLICATIONS
Output Amplifier for Fast D/As
Signal Processing
Instrumentation Amplifiers
Fast Sample/Holds
Active Filters
Low Distortion Audio Amplifiers
Input Buffer for A/D Converters
Servo Controllers
GENERAL DESCRIPTION
The OP249 is a high speed, precision dual JFET op amp, similar to the popular single op amp, the OP42. The OP249 outperforms available dual amplifiers by providing superior speed with
excellent dc performance. Ultrahigh open-loop gain (1 kV/mV
minimum), low offset voltage, and superb gain linearity makes
the OP249 the industry’s first true precision, dual high speed
amplifier.
With a slew rate of 22 V/µs typical and a fast settling time of less
than 1.2 µs maximum to 0.01%, the OP249 is an ideal choice
OP249
PIN CONNECTIONS
8-Lead Cerdip (Z Suffix),
8-Lead Plastic Mini-DIP
(P Suffix)
OUT A
1
–IN A
+IN A
A
2
–
++–
3
4
V–+IN B
8-Lead SO
(S Suffix)
+IN A
1
–
2
V–
+IN B
–IN B
A
+
3
+
–
B
4
for high speed bipolar D/A and A/D converter applications. The
excellent dc performance of the OP249 allows the full accuracy
of high resolution CMOS D/As to be realized.
Symmetrical slew rate, even when driving large load, such as,
600 Ω or 200 pF of capacitance and ultralow distortion, make
the OP249 ideal for professional audio applications, active
filters, high speed integrators, servo systems, and buffer amplifiers.
The OP249 provides significant performance upgrades to the
TL072, AD712, OP215, MC34082, and the LT1057.
V+
8
B
OUT B
7
–IN B
6
5
–IN A
8
OUT A
7
V+
6
OUT B
5
0.010
TA = 25ⴗC
= ⴞ15V
V
S
= 10V p-p
870ns
100
90
10
0%
10mV
500ns
Figure 1. Fast Settling (0.01%)
V
O
= 10k⍀
R
L
= 1
A
V
0.001
2010k
1001k20k
Figure 2. Low Distortion AV = 1,
= 10 k
R
L
Ω
REV. E
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.
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the OP249 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
–4–
REV. E
Typical Performance Characteristics–
OP249
120
TA = 25ⴗC
100
OPEN-LOOP GAIN – dB
–20
= ⴞ15V
V
S
= 2k⍀
R
L
80
60
40
20
0
1k
GAIN
PHASE
10k100k1M10M100M
FREQUENCY – Hz
⍜m = 55
TPC 1. Open-Loop Gain, Phase vs.
Frequency
120
TA = 25ⴗC
= ⴞ15V
V
S
+PSRR
–PSRR
10k100k1M
POWER SUPPLY REJECTION – dB
100
80
60
40
20
0
10
100
FREQUENCY – Hz
1k
TPC 4. Power Supply Rejection vs.
Frequency
0
45
90
135
180
225
65
VS = ⴞ15V
60
⍜m
55
PHASE – ⴗC
PHASE MARGIN – ⴗC
50
45
–75
–50 –25 025 50 75 100 125
TEMPERATURE – ⴗC
GBW
TPC 2. Gain Bandwidth Product,
Phase Margin vs. Temperature
28
VS = ⴞ15V
= 2k⍀
R
L
26
CL = 50pF
24
22
20
SLEW RATE – V/s
18
16
–50 –25 025 50 75 100 125
–75
TEMPERATURE – ⴗC
–SR
+SR
TPC 5. Slew Rate vs. Temperature
10
8
6
4
2
GAIN BANDWIDTH PRODUCT – MHz
COMMON-MODE REJECTION – dB
140
120
100
TA = 25ⴗC
= ⴞ15V
V
S
80
60
40
20
0
100
1k
10k100k1M10M
FREQUENCY – Hz
TPC 3. Common-Mode Rejection vs.
Frequency
28
TA = 25ⴗC
= ⴞ15V
V
S
26
= 2k⍀
R
L
24
22
20
SLEW RATE – V/s
18
16
0.20.40.60.81.0
0
DIFFERENTIAL INPUT VOLTAGE – Volts
TPC 6. Slew Rate vs. Differential
Input Voltage
35
TA = 25ⴗC
= ⴞ15V
V
S
30
NEGATIVE
25
20
POSITIVE
15
SLEW RATE – V/s
10
5
100200300400500
0
CAPACITIVE LOAD – pF
TPC 7. Slew Rate vs. Capacitive
Load
10
TA = 25ⴗC
8
= ⴞ15V
V
–2
–4
OUTPUT STEP SIZE – Volts
–6
–8
–10
S
= 1
A
VCL
6
4
2
0
0
2004006008001000
0.1%
0.01%
0.01%
0.1%
SETTLING TIME – ns
TPC 8. Settling Time vs. Step Size
–5–REV. E
100
TA = 25ⴗC
= ⴞ15V
V
S
80
60
40
20
VOLTAGE NOISE DENSITY – nV Hz
0
0100
FREQUENCY – Hz
1k10k
TPC 9. Voltage Noise Density vs.
Frequency
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