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AD8038AKSZ-REEL7

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16
Low Power, 350 MHz
Voltage Feedback Amplifiers
AD8038/AD8039
Rev. G
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. Specifications subject to change without notice. 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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2002–2009 Analog Devices, Inc. All rights reserved.
FEATURES
Low power: 1 mA supply current/amp
High speed
350 MHz, −3 dB bandwidth (G = +1)
425 V/μs slew rate
Low cost
Low noise
8 nV/√Hz @ 100 kHz
600 fA/√Hz @ 100 kHz
Low input bias current: 750 nA maximum
Low distortion
−90 dB SFDR @ 1 MHz
−65 dB SFDR @ 5 MHz
Wide supply range: 3 V to 12 V
Small packaging: 8-lead SOT-23, 5-lead SC70, and 8-lead SOIC
APPLICATIONS
Battery-powered instrumentation
Filters
A/D drivers
Level shifting
Buffering
Photo multipliers
FUNCTIONAL BLOCK DIAGRAM
NC
1
–IN
2
+IN
3
–V
S
4
DISABLE
8
+V
S
7
V
OUT
6
NC
5
NC = NO CONNECT
AD8038
0
2951-001
Figure 1. 8-lead SOIC (R)
AD8038
V
OUT
1
+IN
3
–V
S
2
+V
S
5
–IN
4
0
2951-002
Figure 2. 5-Lead SC70 (KS)
NC = NO CONNECT
V
OUT1
1
–IN1
2
+IN1
3
–V
S
4
+V
S
8
V
OUT2
7
–IN2
6
+IN2
5
AD8039
02951-003
Figure 3. 8-Lead SOIC (R) and 8-Lead SOT-23 (RJ)
GENERAL DESCRIPTION
The AD8038 (single) and AD8039 (dual) amplifiers are high speed
(350 MHz) voltage feedback amplifiers with an exceptionally low
quiescent current of 1.0 mA/amplifier typical (1.5 mA maximum).
The AD8038 single amplifier in the 8-lead SOIC package has a
disable feature. Despite being low power and low cost, the amplifier
provides excellent overall performance. Additionally, it offers a
high slew rate of 425 V/µs and a low input offset voltage of 3 mV
maximum.
The Analog Devices, Inc., proprietary XFCB process allows low
noise operation (8 nV/√Hz and 600 fA/√Hz) at extremely low
quiescent currents. Given a wide supply voltage range (3 V to 12 V),
wide bandwidth, and small packaging, the AD8038 and AD8039
amplifiers are designed to work in a variety of applications
where power and space are at a premium.
The AD8038 and AD8039 amplifiers have a wide input common-
mode range of 1 V from either rail and swing to within 1 V of each
rail on the output. These amplifiers are optimized for driving
capacitive loads up to 15 pF. If driving larger capacitive loads, a small
series resistor is needed to avoid excessive peaking or overshoot.
The AD8039 amplifier is available in a 8-lead SOT-23 package,
and the single AD8038 is available in both an 8-lead SOIC and a
5-lead SC70 package. These amplifiers are rated to work over
the industrial temperature range of −40°C to +85°C.
–6
10000.1 1 10 100
–3
0
3
6
9
12
15
18
21
24
FREQUENCY (MHz)
GAIN (dB)
G = +5
G = +2
G = +1
G = +10
0
2951-004
Figure 4. Small Signal Frequency Response for Various Gains,
V
OUT
= 500 mV p-p, V
S
= ±5 V
AD8038/AD8039
Rev. G | Page 2 of 16
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Functional Block Diagram .............................................................. 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
Absolute Maximum Ratings ............................................................ 5
Maximum Power Dissipation ..................................................... 5
Output Short Circuit .................................................................... 5
ESD Caution .................................................................................. 5
Typical Performance Characteristics ............................................. 6
Layout, Grounding, and Bypassing Considerations .................. 13
Disable ......................................................................................... 13
Power Supply Bypassing ............................................................ 13
Grounding ................................................................................... 13
Input Capacitance ...................................................................... 13
Output Capacitance ................................................................... 13
Input-to-Output Coupling ........................................................ 13
Applications Information .............................................................. 14
Low Power ADC Driver ............................................................ 14
Low Power Active Video Filter ................................................. 14
Outline Dimensions ....................................................................... 15
Ordering Guide .......................................................................... 16
REVISION HISTORY
8/09—Rev. F to Rev. G
Changes to Applications Section and General Description
Section ................................................................................................ 1
Changes to Disable Section and Grounding Section ................. 13
Changes to Low Power ADC Driver Section and Low Power
Active Video Filter Section ............................................................ 14
Updated Outline Dimensions ....................................................... 15
Changes to Ordering Guide .......................................................... 16
8/04—Rev. E to Rev. F
Changes to Figure 4 ........................................................................ 10
8/03—Rev. D to Rev. E
Change to TPC 34............................................................................. 8
7/03—Rev. C to Rev. D
Changes to Ordering Guide ............................................................ 4
Updated TPC 35 Caption ................................................................ 8
6/03—Rev. B to Rev. C
Updated Connection Diagrams ...................................................... 1
Updated Ordering Guide ................................................................. 4
Updated Outline Dimensions ....................................................... 11
5/02—Rev. A to Rev. B
Add Part Number AD8038 ............................................... Universal
Changes to Product Title .................................................................. 1
Changes to Features .......................................................................... 1
Changes to Product Description ..................................................... 1
Changes to Connection Diagram .................................................... 1
Update to Specifications ................................................................... 2
Update to Maximum Power Dissipation ........................................ 4
Update to Output Short Circuit ....................................................... 4
Update to Ordering Guide ............................................................... 4
Change to Figure 2 ............................................................................ 4
Change to TPC 2 ............................................................................... 5
Change to TPC 18 ............................................................................. 6
Change to TPC 27 ............................................................................. 7
Change to TPC 29 ............................................................................. 8
Change to TPC 30 ............................................................................. 8
Change to TPC 31 ............................................................................. 8
Added TPC 36 .................................................................................... 8
Added TPC 37 .................................................................................... 9
Edits to Low Power Active Video Filter ....................................... 10
Change to Figure 4 ......................................................................... 10
4/02—Rev. 0 to Rev. A
Changes to Features .......................................................................... 1
Update Specifications ................................................................... 2, 3
Edits to TPC 19 .................................................................................. 7
AD8038/AD8039
Rev. G | Page 3 of 16
SPECIFICATIONS
T
A
= 25°C, V
S
= ±5 V, R
L
= 2 kΩ, Gain = +1, unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth G = +1, V
O
= 0.5 V p-p 300 350 MHz
G = +2, V
O
= 0.5 V p-p 175 MHz
G = +1, V
O
= 2 V p-p 100 MHz
Bandwidth for 0.1 dB Flatness G = +2, V
O
= 0.2 V p-p 45 MHz
Slew Rate G = +1, V
O
= 2 V step, R
L
= 2 kΩ 400 425 V/µs
Overdrive Recovery Time G = +2, 1 V overdrive 50 ns
Settling Time to 0.1% G = +2, V
O
= 2 V step 18 ns
NOISE/HARMONIC PERFORMANCE
SFDR
Second Harmonic f
C
= 1 MHz, V
O
= 2 V p-p, R
L
= 2 kΩ −90 dBc
Third Harmonic f
C
= 1 MHz, V
O
= 2 V p-p, R
L
= 2 kΩ −92 dBc
Second Harmonic f
C
= 5 MHz, V
O
= 2 V p-p, R
L
= 2 kΩ −65 dBc
Third Harmonic f
C
= 5 MHz, V
O
= 2 V p-p, R
L
= 2 kΩ −70 dBc
Crosstalk, Output-to-Output (AD8039) f = 5 MHz, G = +2 −70 dB
Input Voltage Noise f = 100 kHz 8 nV/√Hz
Input Current Noise f = 100 kHz 600 fA/√Hz
DC PERFORMANCE
Input Offset Voltage 0.5 3 mV
Input Offset Voltage Drift 4.5 µV/°C
Input Bias Current 400 750 nA
Input Bias Current Drift 3 nA/°C
Input Offset Current ±25 nA
Open-Loop Gain V
O
= ±2.5 V 70 dB
INPUT CHARACTERISTICS
Input Resistance 10 MΩ
Input Capacitance 2 pF
Input Common-Mode Voltage Range R
L
= 1 kΩ ±4 V
Common-Mode Rejection Ratio V
CM
= ±2.5 V 61 67 dB
OUTPUT CHARACTERISTICS
DC Output Voltage Swing R
L
= 2 kΩ, saturated output ±4 V
Capacitive Load Drive 30% overshoot, G = +2 20 pF
POWER SUPPLY
Operating Range 3.0 12 V
Quiescent Current per Amplifier 1.0 1.5 mA
Power Supply Rejection Ratio −Supply −71 −77 dB
+Supply −64 −70 dB
POWER-DOWN DISABLE
1
Turn-On Time 180 ns
Turn-Off Time 700 ns
Disable Voltage—Part is Off +V
S
− 4.5 V
Disable Voltage—Part is On +V
S
− 2.5 V
Disabled Quiescent Current 0.2 mA
Disabled In/Out Isolation f = 1 MHz −60 dB
1
Only available in AD8038 8-lead SOIC package.
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P16

AD8038AKSZ-REEL7

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Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers Low Pwr 350MHz VTG Feedback
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