OP249_07 Datasheet, PDF (1/20 Pages) Analog Devices – Dual, Precision JFET High Speed Operational Amplifier

Dual, Precision
JFET High Speed Operational Amplifier
OP249
FEATURES
Fast slew rate: 22 V/μs typical
Settling time (0.01%): 1.2 μs maximum
Offset voltage: 300 μV maximum
High open-loop gain: 1000 V/mV minimum
Low total harmonic distortion: 0.002% typical
Improved replacement for AD712, LT1057, OP215, TL072,
and MC34082
APPLICATIONS
Output amplifier for fast DACs
Signal processing
Instrumentation amplifiers
Fast sample-and-holds
Active filters
Low distortion audio amplifiers
Input buffer for ADCs
Servo controllers
PIN CONFIGURATIONS
OUT A 1
–IN A 2
+IN A 3
V– 4
OP249
A
B
8 V+
7 OUT B
6 –IN B
5 +IN B
Figure 1. 8-Lead CERDIP (Q-8) and
8-Lead PDIP (N-8)
+IN A 1
V– 2
+IN B 3
–IN B 4
8 –IN A
A
7 OUT A
OP249 ^{6 V+}
B
5 OUT B
Figure 2. 8-Lead SOIC (R-8)
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 for
high speed bipolar DAC and ADC applications. The excellent
dc performance of the OP249 allows the full accuracy of high
resolution CMOS DACs to be realized.
0.01
870ns
T_A = 25°C
V_S = ±15V
100
V_O = 10V p-p
90
R_L = 10kΩ
A_V = 1
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 LT1057.
100
90
10
0%
10mV
500ns
Figure 3. Fast Settling (0.01%)
0.001
20
100
1k
10k 20k
Figure 4. Low Distortion, AV = 1, RL = 10 kΩ
10
0%
5V
1µs
Figure 5. Excellent Output Drive, RL = 600 Ω
Rev. F
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