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PDF 5962-9063302MCA Data sheet ( Hoja de datos )
| Número de pieza | 5962-9063302MCA | |
| Descripción | Quad Precision/ Low Cost/ High Speed/ BiFET Op Amp | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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a
Quad Precision, Low Cost,
High Speed, BiFET Op Amp
FEATURES
Enhanced Replacement for LF347 and TL084
AC PERFORMANCE
1 s Settling to 0.01% for 10 V Step
20 V/s Slew Rate
0.0003% Total Harmonic Distortion (THD)
4 MHz Unity Gain Bandwidth
DC PERFORMANCE
0.5 mV max Offset Voltage (AD713K)
20 V/°C max Drift (AD713K)
200 V/mV min Open Loop Gain (AD713K)
2 V p-p typ Noise, 0.1 Hz to 10 Hz
True 14-Bit Accuracy
Single Version: AD711, Dual Version: AD712
Available in 16-Pin SOIC, 14-Pin Plastic DIP and
Hermetic Cerdip Packages and in Chip Form
MIL-STD-883B Processing Available
Standard Military Drawing Available
APPLICATIONS
Active Filters
Quad Output Buffers for 12- and 14-Bit DACs
Input Buffers for Precision ADCs
Photo Diode Preamplifier Applications
PRODUCT DESCRIPTION
The AD713 is a quad operational amplifier, consisting of four
AD711 BiFET op amps. These precision monolithic op amps
offer excellent dc characteristics plus rapid settling times, high
slew rates, and ample bandwidths. In addition, the AD713 pro-
vides the close matching ac and dc characteristics inherent to
amplifiers sharing the same monolithic die.
The single-pole response of the AD713 provides fast settling:
l µs to 0.01%. This feature, combined with its high dc precision,
makes it suitable for use as a buffer amplifier for 12- or 14-bit
DACs and ADCs. It is also an excellent choice for use in active
filters in 12-, 14- and 16-bit data acquisition systems. Further-
more, the AD713’s low total harmonic distortion (THD) level
of 0.0003% and very close matching ac characteristics make it
an ideal amplifier for many demanding audio applications.
The AD713 is internally compensated for stable operation at
unity gain and is available in seven performance grades. The
AD713J and AD713K are rated over the commercial tempera-
ture range of 0°C to +70°C. The AD713A and AD713B are
rated over the industrial temperature of –40°C to +85°C. The
AD713S and AD713T are rated over the military temperature
range of –55°C to +125°C and are available processed to
MIL-STD-883B, Rev. C.
AD713
CONNECTION DIAGRAMS
Plastic (N) and
Cerdip (Q) Packages
SOIC (R) Package
OUTPUT 1
–IN 2
+IN 3
+VS 4
+IN 5
–IN 6
OUTPUT 7
14
AD713
(TOP VIEW)
23
OUTPUT 1
14 OUTPUT
13 –IN
–IN 2
+IN 3
12 +IN
11 –VS
10 +IN
9 –IN
+VS 4
+IN 5
–IN 6
OUTPUT 7
8 OUTPUT NC 8
14
AD713
(TOP VIEW)
23
16 OUTPUT
15 –IN
14 +IN
13 –VS
12 +IN
11 –IN
10 OUTPUT
9 NC
NC = NO CONNECT
The AD713 is offered in a 16-pin SOIC, 14-pin plastic DIP and
hermetic cerdip package, or in chip form.
PRODUCT HIGHLIGHTS
1. The AD713 is a high speed BiFET op amp that offers excel-
lent performance at competitive prices. It upgrades the per-
formance of circuits using op amps such as the TL074/
TL084, LT1058, LF347 and OPA404.
2. Slew rate is 100% tested for a guaranteed minimum of
16 V/µs (J, A and S Grades).
3. The combination of Analog Devices’ advanced processing
technology, laser wafer drift trimming and well-matched
ion-implanted JFETs provides outstanding dc precision. In-
put offset voltage, input bias current and input offset current
are specified in the warmed-up condition and are 100%
tested.
4. Very close matching of ac characteristics between the four
amplifiers makes the AD713 ideal for high quality active filter
applications.
REV. B
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
which 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: 617/329-4700
Fax: 617/326-8703
1 page  
AD713
Figure 10. Open-Loop Gain and
Phase Margin vs. Frequency
Figure 11. Open-Loop Gain vs.
Supply Voltage
Figure 12. Power Supply Rejection
vs. Frequency
Figure 13. Common Mode Rejec-
tion vs. Frequency
Figure 14. Large Signal Frequency
Response
Figure 15. Output Swing and Error
vs. Settling Time
Figure 16. Total Harmonic Distor-
tion vs. Frequency
Figure 17. Input Noise Voltage
Spectral Density
Figure 18. Slew Rate vs. Input
Error Signal
REV. B
–5–
5 Page 
AD713
Figure 40. A Programmable State Variable Filter Circuit
FILTER APPLICATIONS
A Programmable State Variable Filter
For the state variable or universal filter configuration of Figure
40 to function properly, DACs A1 and B1 need to control the
gain and Q of the filter characteristic, while DACs A2 and B2
must accurately track for the simple expression of fC to be true.
This is readily accomplished using two AD7528 DACs and one
AD713 quad op amp. Capacitor C3 compensates for the effects
of op amp gain-bandwidth limitations.
This filter provides low pass, high pass and band pass outputs
and is ideally suited for applications where microprocessor con-
trol of filter parameters is required. The programmable range
for component values shown is fC = 0 to 15 kHz and Q = 0.3
to 4.5.
GIC and FDNR FILTER APPLICATIONS
The closely matched and uniform ac characteristics of the
AD713 make it ideal for use in GIC (gyrator) and FDNR (fre-
quency dependent negative resistor) filter applications. Figures
41 and 43 show the AD713 used in two typical active filters.
The first shows a single AD713 simulating two coupled induc-
tors configured as a one-third octave bandpass filter. A single
section of this filter meets ANSI class II specifications and
handles a 7.07 V rms signal with <0.002% THD (20 Hz–20
kHz).
Figure 43 shows a 7-pole antialiasing filter for a 2 ϫ oversam-
pling (88.2 kHz) digital audio application. This filter has <0.05
dB pass band ripple and 19.8 ± 0.3 µs delay,
dc-20 kHz and will handle a 5 V rms signal (VS = ± 15 V) with
no overload at any internal nodes.
The filter of Figure 41 can be scaled for any center frequency by
using the formula:
fC
=
1.11
2πRC
where all resistors and capacitors scale equally. Resistors R3–R8
should not be greater than 2 kΩ in value, to prevent parasitic os-
cillations caused by the amplifier’s input capacitance.
REV. B
Figure 41. A 1/3 Octave Filter Circuit
–11–
11 Page | ||
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