AD846AQ ,450 V/us, Precision, Current-Feedback Op AmpSPECIFICATIONSAD846A AD846B AD846SModel Conditions Min Typ Max Min Typ Max Min Typ Max Units1INPUT ..
AD846BN ,450 V/us, Precision, Current-Feedback Op AmpCHARACTERISTICSVoltage R = 500 Ω 10 10 10 VLOADCurrent Short Circuit 65 65 65 mAOutput Resistanc ..
AD847A ,High Speed, Low Power Monolithic Op AmpFEATURESCONNECTION DIAGRAMS725 MHz Gain Bandwidth – AD849Plastic (N),175 MHz Gain Bandwidth – AD848 ..
AD847AQ ,High Speed, Low Power Monolithic Op Ampspecifications which include an open-loop gain of 3500 V/VMIL-STD-883B Processing(500 Ω load) and l ..
AD847AQ. ,High Speed, Low Power Monolithic Op Ampapplications such asPRODUCT DESCRIPTIONmultiple pole active filters.The AD847 represents a breakthr ..
AD847AR ,High Speed, Low Power Monolithic Op Ampspecifications which include an open-loop gain of 3500 V/VMIL-STD-883B Processing(500 Ω load) and l ..
ADP3421 ,Geyserville-Enabled DC/DC Converter Controller for Mobile CPUsfeaturesactive voltage positioning that can be optimally compensatedto ensure a superior load trans ..
ADP3421JRU ,Geyserville-Enabled DC-DC Converter Controller for Mobile CPUsGENERAL DESCRIPTIONI/O LDOANDIOFBBIAS ANDCORECONTROLLERPOWER GOODThe ADP3421 is a hysteretic dc-dc ..
ADP3421JRU-REEL ,Geyserville-Enabled DC/DC Converter Controller for Mobile CPUsfeaturesactive voltage positioning that can be optimally compensatedto ensure a superior load trans ..
ADP3421JRU-REEL7 ,Geyserville-Enabled DC/DC Converter Controller for Mobile CPUsGENERAL DESCRIPTIONI/O LDOANDIOFBBIAS ANDCORECONTROLLERPOWER GOODThe ADP3421 is a hysteretic dc-dc ..
ADP3422 ,IMVP-II Compliant Core Controller for Mobile CPUsfeatures activeGNDvoltage positioning that can be optimally compensated to ensure asuperior load tr ..
ADP3422JRU ,IMVP-II-Compliant Core Power Controller for Mobile CPUsfeatures activeGNDvoltage positioning that can be optimally compensated to ensure asuperior load tr ..
AD846AN-AD846AQ-AD846BN
450 V/us, Precision, Current-Feedback Op Amp
REV. C
450V/�s, Precision,
Current-Feedback Op Amp
CONNECTION DIAGRAMSFEATURES
AC PERFORMANCE
Small Signal Bandwidth:80 MHz (AV = –1)
Slew Rate:450 V/�s
Full Power Bandwidth:6.8 MHz at 20 V p-p,
RL = 500 �
Fast Settling:for 10 V Step: 110 ns to 0.01%,
80 ns to 0.1%
Differential Gain:<0.01% @ 4.4 MHz
Differential Phase:<0.028� @ 4.4 MHz
Total Harmonic Distortion (THD):0.0005% @ 100 kHz
Open-Loop Transimpedance:200 M�
Input Voltage Noise:2 nV/√Hz
DC PERFORMANCE
Input Offset Voltage:75 �V max (B Grade)
Input Offset Drift:3.5 �V/�C max (B Grade)
Quiescent Supply Current:6.5 mA max
APPLICATIONS
High Speed DAC Buffers
Multiflash ADC Error Amplifiers
Flash ADC Buffers
Coaxial Cable Drivers
High Performance Audio Circuitry
Available in Plastic Mini-DIP, Hermetic Cerdip, and
Plastic SOIC (A) Package
MIL-STD-883B Part Available
PRODUCT DESCRIPTIONThe AD846 is a monolithic, very high speed operational ampli-
fier offering high performance. Although technically classed as a
current-feedback or transimpedance amplifier, it may be used
in much the same way as traditional op amps while providing
significant performance benefits. Employing Analog Devices’
junction isolated complementary bipolar (CB) process, the AD846
achieves true “12-bit” (0.01%) precision on critical ac and dc
parameters, a level of performance unmatched by amplifiers
fabricated using either the dielectrically isolated (DI) or other
bipolar processes.
The AD846 offers significant advantages over conventional
high speed operational amplifiers. It maintains a nearly con-
stant bandwidth and settling time to 0.01% over a wide range
of closed-loop gains. This makes the AD846 ideal for amplifying
the residue in multiple-pass analog-to-digital converters.
Other advantages include: low input errors and high open-loop
transresistance (200 MΩ) into a 500 Ω load, ensuring true
12-bit dc accuracy for closed-loop gains from –1 to gains
greater than –100. This combination of ac and dc perfor-
mance makes the AD846 an excellent choice for buffering
precision high speed DACs and flash ADCs.
Plastic Mini-DIP (N) Package
and
Cerdip (Q) Package The AD846 is available in three performance grades. The AD846A
and AD846B are rated over the industrial temperature range
of –40°C to +85°C. The AD846S is rated over the full mili-
tary temperature range of –55°C to +125°C and is available
processed to MIL-STD-883B, Rev C.
The AD846 is available in two types of 8-lead packages: plastic
mini-DIP and hermetic cerdip. The AD846AR-16 is available in
the 16-lead SOIC package. “A” and “S” grade chips are also
available.
PRODUCT HIGHLIGHTSThe AD846 achieves settling times of 110ns to 0.01%
for gains of –1 to –10, with a 450 V/µs slew rate, while
consuming only 5 mA of supply current.For closed-loop gains of –1 to –100, the high speed perfor-
mance of the AD846 is achieved without sacrificing full 12-bit
dc precision.The AD846 is well suited to line driver and video buffer
applications where the properties of low distortion and high
slew rate are required.
SOIC (R) Package
AD846–SPECIFICATIONS(@ +25�C and �15 V dc, unless otherwise noted)
AD846
ORDERING GUIDENOTES“A” and “S” grade chips are also available.N = Plastic DIP Package; Q = Cerdip Package, R = SOIC Package
METALIZATION PHOTOGRAPHDimensions shown in inches and (mm).
Consult factory for latest dimensions.
NOTESInput Offset Voltage Specifications are guaranteed after 5 minutes at TA = +25°C.Test Conditions: +VS = 15 V, –VS = 5 V to 18 V and +VS = 5 V to 18 V, –VS = 15 V.Bias Current Specifications are guaranteed maximum after 5 minutes at TA = +25°C.FPBW = Slew Rate/2 π VPEAK.Total Harmonic Distortion.
All min and max specifications are guaranteed. Specifications shown in boldface are tested on all production units at final electrical test. Results from those tests are
used to calculate outgoing quality levels.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS1Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±18 V
Internal Power Dissipation2
Plastic Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.5 W
Cerdip Package . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 W
Common-Mode Input Voltage, Max Safe . . . . . . . |VS| – 3 V
Output Short Circuit Duration . . . . . . . . . . . . . . . . Indefinite
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ±1 V
Continuous Input Current
Inverting or Noninverting . . . . . . . . . . . . . . . . . . . . 2.0 mA
Storage Temperature Range (Q) . . . . . . . . . –65°C to +150°C
Storage Temperature Range (N) . . . . . . . . . –65°C to +125°C
Storage Temperature Range (R) . . . . . . . . . –65°C to +125°C
Operating Temperature Range
AD846A/B . . . . . . . . . . . . . . . . . . . . . . . . –40°C to +85°C
AD846S . . . . . . . . . . . . . . . . . . . . . . . . . . –55°C to +125°C
Lead Temperature Range (Soldering 60 sec) . . . . . . . +300°C
ESD Rating . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3500 V
NOTES
1Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; the functional operation of
the device at these or any other conditions above those indicated in the operational
sections of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2Maximum internal power dissipation is specified so that TJ does not exceed
+175°C at an ambient temperature of +25°C, derate cerdip (Q) package at
8.7mW/°C and plastic (N) package at 10 mW/°C.
Plastic Package: θJA = 100°C/Watt, θJC = 33°C/W.
Cerdip Package: θJA = 110°C/Watt, θJC = 30°C/W.
SOIC Package: θJA = 100°C/Watt, θJC = 33°C/W.
AD846 – Typical CharacteristicsFigure 1.Input Voltage Swing
vs. Supply
Figure 4.Quiescent Supply Current
vs. Temperature
Figure 7.Open-Loop Transimpedance
vs. Supply
Figure 2.Output Voltage Swing
vs. Supply
Figure 5.Output Voltage Swing vs.
Resistive Load
Figure 8.Positive Input Bias Current
vs. Common-Mode Voltage
Figure 3.Quiescent Current vs.
Supply Voltage
Figure 6.Large Signal Frequency
Response
Figure 9.Negative Input Bias
Current vs. Common-Mode Voltage
Figure 10.Positive Input Bias Current
vs. Temperature
Figure 13.Common-Mode Rejection
vs. Frequency
Figure 16.Short Circuit Current Limit
vs. Temperature
Figure 11.Negative Input Bias
Current vs. Temperature
Figure 14.Input Noise Voltage
Spectral Density
Figure 17.Slew Rate vs.
Temperature
Figure 12.Power Supply Rejection
vs. Frequency
Figure 15.Inverting Input Noise
Current Spectral Density
Figure 18.Slew Rate vs. Input
Error Signal
AD846 – Typical CharacteristicsFigure 19a.Inverting Amplifier,
Gain of 1
Figure 21.Phase Shift vs. Frequency
Figure 24.3 dB Bandwidth vs.
Supply Voltage
Figure 19b.Large Signal Pulse
Response, Gain of –1
Figure 22.Total Harmonic Distortion
vs. Frequency
Figure 25.Output Impedance
vs. Frequency
Figure 20.Normalized Output
Amplitude vs. Frequency vs. Load
Figure 23.Settling Time
vs. Step Size
Figure 26.–3 dB Bandwidth
vs. Temperature
, Inverting Gain of 1
