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AD8047ARZ-REEL7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
REV. A
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reliable. However, no responsibility is assumed by Analog Devices for its
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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 companies.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 www.analog.com
Fax: 781/326-8703 © 2003 Analog Devices, Inc. All rights reserved.
AD8047/AD8048
250 MHz, General Purpose
Voltage Feedback Op Amps
The AD8047 and AD8048’s low distortion and cap load drive
make the AD8047/AD8048 ideal for buffering high speed ADCs.
They are suitable for 12-bit/10 MSPS or 8-bit/60 MSPS ADCs.
Additionally, the balanced high impedance inputs of the voltage
feedback architecture allow maximum flexibility when designing
active filters.
The AD8047 and AD8048 are offered in industrial (–40°C to
+85°C) temperature ranges and are available in 8-lead PDIP
and SOIC packages.
5ns
1V
Figure 1. AD8047 Large Signal Transient Response,
V
O
= 4 V p-p, G = +1
FEATURES
Wide Bandwidth AD8047, G = +1 AD8048, G = +2
Small Signal 250 MHz 260 MHz
Large Signal (2 V p-p) 130 MHz 160 MHz
5.8 mA Typical Supply Current
Low Distortion, (SFDR) Low Noise
–66 dBc Typ @ 5 MHz
–54 dBc Typ @ 20 MHz
5.2 nV/√Hz (AD8047), 3.8 nV/√Hz (AD8048) Noise
Drives 50 pF Capacitive Load
High Speed
Slew Rate 750 V/s (AD8047), 1000 V/s (AD8048)
Settling 30 ns to 0.01%, 2 V Step
3 V to 6 V Supply Operation
APPLICATIONS
Low Power ADC Input Driver
Differential Amplifiers
IF/RF Amplifiers
Pulse Amplifiers
Professional Video
DAC Current to Voltage Conversion
Baseband and Video Communications
Pin Diode Receivers
Active Filters/Integrators
PRODUCT DESCRIPTION
The AD8047 and AD8048 are very high speed and wide band-
width amplifiers. The AD8047 is unity gain stable. The AD8048 is
stable at gains of two or greater. The AD8047 and AD8048,
which utilize a voltage feedback architecture, meet the require-
ments of many applications that previously depended on current
feedback amplifiers.
A proprietary circuit has produced an amplifier that combines
many of the best characteristics of both current feedback and
voltage feedback amplifiers. For the power (6.6 mA max), the
AD8047 and AD8048 exhibit fast and accurate pulse response
(30 ns to 0.01%) as well as extremely wide small signal and large
signal bandwidth and low distortion. The AD8047 achieves
–54 dBc distortion at 20 MHz, 250 MHz small signal, and
130 MHz large signal bandwidths.
FUNCTIONAL BLOCK DIAGRAM
8-Pin Plastic PDIP (N)
and SOIC (R) Packages
1
2
3
4
8
7
6
5
NC
–INPUT
+INPUT
–V
S
NC
+V
S
OUTPUT
NC
(TOP VIEW)
NC = NO CONNECT
AD8047/
AD8048
REV. A–2–
AD8047/AD8048–SPECIFICATIONS
AD8047A AD8048A
Parameter Conditions Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE
Bandwidth (–3 dB)
Small Signal V
OUT
≤ 0.4 V p-p 170 250 180 260 MHz
Large Signal
1
V
OUT
= 2 V p-p 100 130 135 160 MHz
Bandwidth for 0.1 dB Flatness V
OUT
= 300 mV p-p
AD8047, R
F
=0 Ω;
AD8048, R
F
= 200 Ω 35 50 MHz
Slew Rate, Average +/– V
OUT
= 4 V Step 475 750 740 1000 V/µs
Rise/Fall Time V
OUT
= 0.5 V Step 1.1 1.2 ns
V
OUT
= 4 V Step 4.3 3.2 ns
Settling Time
To 0.1% V
OUT
= 2 V Step 13 13 ns
To 0.01% V
OUT
= 2 V Step 30 30 ns
HARMONIC/NOISE PERFORMANCE
Second Harmonic Distortion 2 V p-p; 20 MHz –54 –48 dBc
R
L
= 1 kΩ –64 –60 dBc
Third Harmonic Distortion 2 V p-p; 20 MHz –60 –56 dBc
R
L
= 1 kΩ –61 –65 dBc
Input Voltage Noise f = 100 kHz 5.2 3.8 nV/√Hz
Input Current Noise f = 100 kHz 1.0 1.0 pA/√Hz
Average Equivalent Integrated
Input Noise Voltage 0.1 MHz to 10 MHz 16 11 µV rms
Differential Gain Error (3.58 MHz) R
L
= 150 Ω, G = +2 0.02 0.01 %
Differential Phase Error (3.58 MHz) R
L
= 150 Ω, G = +2 0.03 0.02 Degree
DC PERFORMANCE
2
,
R
L
= 150 Ω
Input Offset Voltage
3
13 13 mV
T
MIN
to T
MAX
44mV
Offset Voltage Drift ±5 ±5 µV/°C
Input Bias Current 1 3.5 1 3.5 µA
T
MIN
to T
MAX
6.5 6.5 µA
Input Offset Current 0.5 2 0.5 2 µA
T
MIN
to T
MAX
33µA
Common-Mode Rejection Ratio V
CM
= ±2.5 V 74 80 74 80 dB
Open-Loop Gain V
OUT
= ±2.5 V 58 62 65 68 dB
T
MIN
to T
MAX
54 56 dB
INPUT CHARACTERISTICS
Input Resistance 500 500 kΩ
Input Capacitance 1.5 1.5 pF
Input Common-Mode Voltage Range ±3.4 ±3.4 V
OUTPUT CHARACTERISTICS
Output Voltage Range, R
L
= 150 Ω±2.8 ±3.0 ±2.8 ±3.0 V
Output Current 50 50 mA
Output Resistance 0.2 0.2 Ω
Short-Circuit Current 130 130 mA
POWER SUPPLY
Operating Range ±3.0 ±5.0 ±6.0 ±3.0 ±5.0 ±6.0 V
Quiescent Current 5.8 6.6 5.9 6.6 mA
T
MIN
to T
MAX
7.5 7.5 mA
Power Supply Rejection Ratio 72 78 72 78 dB
NOTES
1
See Absolute Maximum Ratings and Theory of Operation sections.
2
Measured at A
V
= 50.
3
Measured with respect to the inverting input.
Specifications subject to change without notice.
(V
S
= 5 V, R
LOAD
= 100 , A
V
= 1 (AD8047), A
V
= 2 (AD8048), unless otherwise noted.)
ELECTRICAL CHARACTERISTICS
REV. A
AD8047/AD8048
–3–
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although the
AD8047/AD8048 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
MAXIMUM POWER DISSIPATION
The maximum power that can be safely dissipated by these devices
is limited by the associated rise in junction temperature. The
maximum safe junction temperature for plastic encapsulated
devices is determined by the glass transition temperature of the
plastic, approximately 150°C. Exceeding this limit temporarily
may cause a shift in parametric performance due to a change in
the stresses exerted on the die by the package. Exceeding a
junction temperature of 175°C for an extended period can
result in device failure.
While the AD8047 and AD8048 are internally short circuit
protected, this may not be sufficient to guarantee that the maxi-
mum junction temperature (150°C) is not exceeded under all
conditions. To ensure proper operation, it is necessary to observe
the maximum power derating curves.
2.0
0
–50 80
1.5
0.5
–40
1.0
0 10 –10 –20 –30 20 30 40 50 60 70
90
AMBIENT TEMPERATURE (
C)
MAXIMUM POWER DISSIPATION (W)
T
J
= +150
C
8-PIN PDIP PACKAGE
8-PIN SOIC PACKAGE
Figure 2. Plot of Maximum Power Dissipation vs.
Temperature
ABSOLUTE MAXIMUM RATINGS
1
Supply Voltage, (+V
S
) – (–V
S
) . . . . . . . . . . . . . . . . . . . . 12.6 V
Voltage Swing × Bandwidth Product
AD8047 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 180 V-MHz
AD8048 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 250 V-MHz
Internal Power Dissipation
2
Plastic Package (N) . . . . . . . . . . . . . . . . . . . . . . . . . . 1.3 W
Small Outline Package (R) . . . . . . . . . . . . . . . . . . . . . 0.9 W
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . . ±V
S
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . ±1.2 V
Output Short-Circuit Duration . . . . . . . . . . . . . . . . . . . . . . . .
. . . . . . . . . . . . . . . . . .Observe Power Derating Curves
Storage Temperature Range (N, R) . . . . . . . –65°C to +125°C
Operating Temperature Range (A Grade) . . . –40°C to +85°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; 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.
2
Specification is for device in free air: 8-Lead PDIP Package, ␪
JA
= 90°C/W; 8-Lead
SOIC Package, ␪
JA
= 140°C/W
METALLIZATION PHOTOS
Dimensions shown in inches and (mm)
Connect Substrate to –V
S
.
AD8047
+V
S
V
OUT
–V
S
–IN
+IN
0.045
(1.14)
0.044
(1.13)
AD8048
+V
S
V
OUT
–V
S
–IN
+IN
0.045
(1.14)
0.044
(1.13)
ORDERING GUIDE
Temperature Package Package
Model Range Description Option*
AD8047AN –40°C to +85°CPDIP N-8
AD8047AR –40°C to +85°C SOIC R-8
AD8047AR-REEL –40°C to +85°C SOIC R-8
AD8047AR-REEL7 –40°C to +85°C SOIC R-8
AD8048AN –40°C to +85°CPDIP N-8
AD8048AR –40°C to +85°C SOIC R-8
AD8048AR-REEL –40°C to +85°C SOIC R-8
AD8048AR-REEL7 –40°C to +85°C SOIC R-8
*N = PDIP, R= SOIC
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

AD8047ARZ-REEL7

Mfr. #:
Buy AD8047ARZ-REEL7
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers 250MHz Gen Purp VTG Feedback
Lifecycle:
New from this manufacturer.
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