AD706AR Analog Devices Inc, AD706AR Datasheet

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AD706AR

Manufacturer Part Number
AD706AR
Description
Operational Amplifier IC Number Of Amplifiers:2
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD706AR

Bandwidth
0.8MHz
Slew Rate
0.15V/us
Package/case
8-SOIC
Leaded Process Compatible
No
Amplifier Type
Bias Current
Mounting Type
Surface Mount
Offset Voltage
0.1mV
Rohs Status
RoHS non-compliant
Number Of Circuits
2
-3db Bandwidth
800kHz
Current - Input Bias
50pA
Voltage - Input Offset
30µV
Current - Supply
750µA
Current - Output / Channel
15mA
Voltage - Supply, Single/dual (±)
4 V ~ 36 V, ±2 V ~ 18 V
Operating Temperature
-40°C ~ 85°C
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Output Type
-
Gain Bandwidth Product
-
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant

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GENERAL DESCRIPTION
The AD706 is a dual, low power, bipolar op amp that has the
low input bias current of a JFET amplifier, but which offers a
significantly lower I
bipolar input transistors to achieve picoampere input bias current
levels (similar to FET input amplifiers at room temperature),
while its I
JFET amp, for which I
increase at 125°C). The AD706 also achieves the microvolt
offset voltage and low noise characteristics of a precision bipolar
input amplifier.
Since it has < 200 pA of bias current, the AD706 does not
require the commonly used “balancing” resistor. Furthermore,
the current noise is only 50 fA/√Hz, which makes this amplifier
usable with very high source impedances. At 600 A max supply
current (per amplifier), the AD706 is well suited for today’s
high density boards.
The AD706 is an excellent choice for use in low frequency
active filters in 12-bit and 14-bit data acquisition systems, in
precision instrumentation, and as a high quality integrator. The
AD706 is internally compensated for unity gain and is available
in five performance grades. The AD706J is rated over the
commercial temperature range of 0°C to +70°C. The AD706A is
rated for the extended industrial temperature range of –40°C
to +85°C.
The AD706 is offered in two varieties of an 8-lead package:
plastic mini-DIP and surface-mount (SOIC).
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. Trademarks and
registered trademarks are the property of their respective owners.
FEATURES
High DC Precision
100 V Max Offset Voltage
1.5 V/ C Max Offset Drift
200 pA Max Input Bias Current
0.5 V p-p Voltage Noise, 0.1 Hz to 10 Hz
750 A Supply Current
Available in 8-Lead Plastic Mini-DlP
Available in Tape and Reel in Accordance with
Quad Version: AD704
APPLICATIONS
Low Frequency Active Filters
Precision Instrumentation
Precision Integrators
and Surface-Mount (SOIC) Packages
EIA-481A Standard
B
typically only increases by 5
B
drift over temperature. It utilizes superbeta
B
doubles every 10°C for a 1000
at 125°C (unlike a
PRODUCT HIGHLIGHTS
1. The AD706 is a dual low drift op amp that offers JFET
2. The AD706 provides both low drift and high dc precision.
3. The AD706 can be used in applications where a chopper
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
level input bias currents, yet has the low I
amplifier. It may be used in circuits using dual op amps
such as the LT1024.
amplifier would normally be required but without the
chopper’s inherent noise.
0.01
100
0.1
Figure 1. Input Bias Current vs. Temperature
10
1
–55
AMPLIFIER 1
OUTPUT
Current Bipolar Op Amp
Dual Picoampere Input
CONNECTION DIAGRAM
Plastic SOIC (R) Packages
Plastic Mini-DIP (N) and
–IN
V–
© 2003 Analog Devices, Inc. All rights reserved.
IN
1
2
3
4
+25
TYPICAL JFET AMP
TEMPERATURE – C
TOP VIEW
AD706
AD706
AMPLIFIER 2
8
7
6
5
+110
V
OUTPUT
–IN
IN
B
AD706
drift of a bipolar
www.analog.com
+125

Related parts for AD706AR

AD706AR Summary of contents

Page 1

FEATURES High DC Precision 100 V Max Offset Voltage 1 Max Offset Drift 200 pA Max Input Bias Current 0.5 V p-p Voltage Noise, 0 750 A Supply Current Available in 8-Lead Plastic Mini-DlP ...

Page 2

AD706–SPECIFICATIONS Parameter INPUT OFFSET VOLTAGE Initial Offset Offset vs. Temperature, Average TC vs. Supply (PSRR MIN MAX Long Term Stability 1 INPUT BIAS CURRENT vs. Temperature, Average MIN MAX MIN ...

Page 3

... V SUPPLY Model AD706JN AD706JR S AD706JR-REEL AD706JR-REEL7 AD706AR AD706AR-REEL AD706AR-REEL7 –40°C to +85°C Tape and Reel R-8 AD706ARZ-REEL* –40°C to +85°C Tape and Reel R-8 *Lead-free part. OUTPUT A –INPUT A +INPUT A –3– AD706J/A Min Typ Max ± 15 ± 2.0 ± ...

Page 4

AD706–Typical Performance Characteristics (Default Conditions pF 1000 SAMPLE SIZE: 3000 800 600 400 200 0 –80 – INPUT OFFSET VOLTAGE – V TPC 1. Typical Distribution of ...

Page 5

FREQUENCY – Hz TPC 10. Input Noise Voltage Spectral Density 1000 900 800 +125 C +25 C 700 –55 C 600 SUPPLY VOLTAGE – Volts TPC 13. ...

Page 6

AD706 –80 –100 –120 –140 –160 10 100 1k FREQUENCY – Hz Figure 2a. Crosstalk vs. Frequency +V 0 1/2 AD706 3 4 0.1 F SINE WAVE GENERATOR –V S 20k + 2.21k 8 ...

Page 7

Figure 5b. Unity Gain Inverter Large Signal Pulse Response 1,000 pF L Figure 6 shows an in-amp circuit that has the obvious advantage of requiring only one AD706, rather than three op amps, with subsequent savings in cost ...

Page 8

AD706 R1 1M INPUT *WITHOUT THE NETWORK, PINS 1 AND 2, AND 6 AND 7 OF THE AD706 ARE TIED TOGETHER. CAPACITORS C1 AND C2 ARE SOUTHERN ELECTRONICS MPCC, POLYCARB 5%, 50V 1 Hz, 4-Pole, Active Filter Figure 7 shows ...

Page 9

COPLANARITY 0.150 (3.81) 0.130 (3.30) 0.110 (2.79) 0.022 (0.56) 0.018 (0.46) 0.014 (0.36) REV. E OUTLINE DIMENSIONS 8-Lead Standard Small Outline Package [SOIC] (R-8) Dimensions shown in millimeters and (inches) 5.00 (0.1968) 4.80 (0.1890 ...

Page 10

AD706 Revision History Location 10/03–Data Sheet changed from REV REV. E Removed the K Version . . . . . . . . . . . . . . . . . . . . . . . ...

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