AD746JR ,Dual Precision, 500 ns Settling, BiFET Op Ampspecifications are guaranteed, although only those shown in boldface are tested on all production u ..
AD746JR-REEL ,Dual Precision, 500 ns Settling, BiFET Op AmpSPECIFICATIONS(@ +258C and 615 V dc, unless otherwise noted) AD746J/A AD746 ..
AD746SQ ,Dual Precision, 500 ns Settling, BiFET Op AmpCHARACTERISTICSVoltage R1 ≥ 2 kΩ +13, –12.5 +13.9, –13.3 +13, –12.5 +13.9, –13.3 +13, –12.5 +13.9, ..
AD746SQ ,Dual Precision, 500 ns Settling, BiFET Op AmpCHARACTERISTICSInput Offset Voltage 0.6 1.5 0.3 0.5 0.6 1.0 mVInput Offset Voltage T to T 2.0 0.7 1 ..
AD7472BR ,1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCsSPECIFICATIONS T = T to T , unless otherwise noted.)A MIN MAX1 1Parameter A Version B Ve ..
AD7472BR ,1.75 MSPS, 4 mW 10-Bit/12-Bit Parallel ADCsSPECIFICATIONS T = T to T , unless otherwise noted.)A MIN MAX1Parameter A Version Units Test ..
ADG1211YRUZ ,2 pF Off Cap, 1 pC Qinj ± 15/12 V Quad SPST SwitchesSPECIFICATIONS SINGLE SUPPLY V = 15 V ± 10%, V = −15 V, GND = 0 V, unless otherwise noted. DD SSTab ..
ADG1213YCPZ-500RL7 , Low Capacitance, Low Charge Injection, ±15 V/12 V iCMOS Quad SPST Switches
ADG1308BRUZ , 4- and 8-Channel -15 V/12 V Multiplexers
ADG1308BRZ , 4- and 8-Channel -15 V/12 V Multiplexers
ADG1408YRUZ , Multi-Cal-System Evaluation Module
ADG1408YRUZ , Multi-Cal-System Evaluation Module
AD746AQ-AD746BQ-AD746JN-AD746JR-AD746JR-REEL-AD746SQ
Dual Precision, 500 ns Settling, BiFET Op Amp
CONNECTION DIAGRAM
Plastic Mini-DIP (N)
Cerdip (Q) and
Plastic SOIC (R) PackagesREV.B
Dual Precision, 500 ns
Settling, BiFET Op Amp
FEATURES
AC PERFORMANCE
500 ns Settling to 0.01% for 10 V Step
75 V/ms Slew Rate
0.0001% Total Harmonic Distortion (THD)
13 MHz Gain Bandwidth
Internal Compensation for Gains of +2 or Greater
DC PERFORMANCE
0.5 mV max Offset Voltage (AD746B)
10 mV/8C max Drift (AD746B)
175 V/mV min Open Loop Gain (AD746B)
2 mV p-p Noise, 0.1 Hz to 10 Hz
Available in Plastic Mini-DIP, Cerdip and Surface
Mount Packages
Available in Tape and Reel in Accordance with
EIA-481A Standard
MIL-STD-883B Processing also Available
Single Version: AD744
APPLICATIONS
Dual Output Buffers for 12- and 14-Bit DACs
Input Buffers for Precision ADCs, Wideband
Preamplifiers and Low Distortion Audio Circuitry
PRODUCT DESCRIPTIONThe AD746 is a dual operational amplifier, consisting of two
AD744 BiFET op amps on a single chip. These precision
monolithic op amps offer excellent dc characteristics plus rapid
settling times, high slew rates and ample bandwidths. In
addition, the AD746 provides the close matching ac and dc
characteristics inherent to amplifiers sharing the same
monolithic die.
The single pole response of the AD746 provides fast settling:
500 ns 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. Furthermore, the AD746’s low total
harmonic distortion (THD) level of 0.0001% and very close
matching ac characteristics make it an ideal amplifier for many
demanding audio applications.
The AD746 is internally compensated for stable operation as a
unity gain inverter or as a noninverting amplifier with a gain of 2
or greater. It is available in four performance grades. The
AD746J is rated over the commercial temperature range of 0 to
+70°C. The AD746A and AD746B are rated over the industrial
temperature range of –40°C to +85°C. The AD746S is rated
over the military temperature range of –55°C to +125°C and is
available processed to MIL-STD-883B, Rev. C.
The AD746 is available in three 8-pin packages: plastic mini
DIP, hermetic cerdip and surface mount (SOIC).
PRODUCT HIGHLIGHTSThe AD746 offers exceptional dynamic response for high
speed data acquisition systems. It settles to 0.01% in 500 ns
and has a 100% tested minimum slew rate of 50 V/μs
(AD746B).Outstanding dc precision is provided by a combination of
Analog Devices’ advanced processing technology, laser wafer
drift trimming and well-matched ion-implanted JFETs. Input
offset voltage, input bias current and input offset current are
specified in the warmed-up condition and are 100% tested.Differential and multichannel systems will benefit from the
AD746’s very close matching of ac characteristics. Input
offset voltage specs are fully tested and guaranteed to a
maximum of 0.5 mV (AD746B).The AD746 has very close, guaranteed matching of input
bias current between its two amplifiers.Unity gain stable version AD712 also available.
AD746–SPECIFICATIONS(@ +258C and 615 V dc, unless otherwise noted)
NOTESInput Offset Voltage specifications are guaranteed after 5 minutes of operation at TA = +25°C.PSRR test conditions: +VS = 15 V, –VS = –12 V to –18 V and +VS = 12 V to 18 V, –VS = –15 V.Bias Current Specifications are guaranteed maximum at either input after 5 minutes of operation at TA = +25°C. For higher temperature, the current doubles every
10°C.Gain = –1, Rl = 2 k, Cl = 10 pF.Defined as voltage between inputs, such that neither exceeds ±10 V from ground.Typically exceeding –14.1 V negative common-mode voltage on either input results in an output phase reversal.
Specifications subject to change without notice.
Specifications in boldface are tested on all production units at final electrical test. Results from those tests are used to calculate outgoing quality levels. All min and
max specifications are guaranteed, although only those shown in boldface are tested on all production units.
ABSOLUTE MAXIMUM RATINGS1Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±18 V
Internal Power Dissipation2 . . . . . . . . . . . . . . . . . . . . .500 mW
Input Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .±VS
Output Short Circuit Duration
(For One Amplifier) . . . . . . . . . . . . . . . . . . . . . . .Indefinite
Differential Input Voltage . . . . . . . . . . . . . . . . . .+VS and –VS
Storage Temperature Range (Q) . . . . . . . . . .–65°C to +150°C
Storage Temperature Range (N, R) . . . . . . . .–65°C to +125°C
Operating Temperature Range
AD746J . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .0°C to +70°C
AD746A/B . . . . . . . . . . . . . . . . . . . . . . . . . .–40°C to +85°C
AD746S . . . . . . . . . . . . . . . . . . . . . . . . . . .–55°C to +125°C
Lead Temperature Range
(Soldering 60 seconds) . . . . . . . . . . . . . . . . . . . . . . .+300°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
NOTESStresses above those listed under “Absolute Maximum Ratings” may cause
permanent damage to the device. This is a stress rating only and functional
operation of the device at these or any other conditions above those indicated in
the operational section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect device reliability.8-Pin Plastic Package: θJA = 100°C/Watt, θJC = 50°C/Watt
8-Pin Cerdip Package: θJA = 110°C/Watt, θJC = 30°C/Watt
8-Pin Small Outline Package: θJA = 160°C/Watt, θJC = 42°C/Watt
METALIZATION PHOTOGRAPHContact factory for latest dimensions.
Dimensions shown in inches and (mm).
CAUTIONESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
AD746
AD746
–Typical CharacteristicsFigure 1. Input Voltage Swing vs.
Supply Voltage
Figure 4. Quiescent Current vs.
Supply Voltage
Figure 7. Input Bias Current vs.
Common Mode Voltage
Figure 2. Output Voltage Swing
vs. Supply Voltage
Figure 5. Input Bias Current vs.
Temperature
Figure 8. Short Circuit Current
Limit vs. Temperature
Figure 3.Output Voltage Swing
vs. Load Resistance
Figure 6.Output Impedance vs.
Frequency
Figure 9.Gain Bandwidth Product
vs. Temperature
Figure 12. Open Loop Gain vs.
Supply Voltage
Figure 15. Output Swing and
Error vs. Settling Time
Figure 18. Slew Rate vs. Input
Error Signal
Figure 11. Settling Time vs.
Closed Loop Voltage Gain
Figure 14. Large Signal Frequency
Response
Figure 17. Input Noise Voltage
Spectral Density
Figure 10. Open Loop Gain and
Phase Margin vs. Frequency
Figure 13. Common-Mode and
Power Supply Rejection vs.
Frequency
Figure 16. Total Harmonic
Distortion vs. Frequency Using
Circuit of Figure 19
AD746
POWER SUPPLY BYPASSINGThe power supply connections to the AD746 must maintain a
low impedance to ground over a bandwidth of 13 MHz or more.
This is especially important when driving a significant resistive
or capacitive load, since all current delivered to the load comes
from the power supplies. Multiple high quality bypass capacitors
are recommended for each power supply line in any critical
application. A 0.1 μF ceramic and a 1 μF tantalum capacitor as
shown in Figure 20 placed as close as possible to the amplifier
(with short lead lengths to power supply common) will assure
adequate high frequency bypassing, in most applications. A
minimum bypass capacitance of 0.1 μF should be used for any
application.
If only one of the two amplifiers inside the AD746 is to be
utilized, the unused amplifier should be connected as shown in
Figure 21a. Note that the noninverting input should be
grounded and that RL and CL are not required.
Figure 19. THD Test Circuit
Figure 22a. Unity Gain Inverter
Figure 21a. Gain of 2 FollowerFigure 21b. Gain of 2 Follower
Large Signal Pulse Response
Figure 21c. Gain of 2 Follower
Small Signal Pulse Response
Figure 22b. Unity Gain Inverter
Large Signal Pulse Response
Figure 22c. Unity Gain Inverter
Small Signal Pulse Response
Figure 20. Power Supply
Bypassing
