Dual High Speed,
O
Data Sheet
FEATURES
Low power amplifiers provide low noise and low distortion,
ideal for xDSL modem receiver
Wide supply range: +5 V, ±2.5 V to ±12 V voltage supply
Low power consumption: 4.0 mA/Amp
Voltage feedback
Ease of Use
Lower total noise (insignificant input current noise
contribution compared to current feedback amps)
Low noise and distortion
2.5 nV/√Hz voltage noise @ 100 kHz
1.2 pA/√Hz current noise
MTPR < −66 dBc (G = +7)
SFDR 110 dB @ 200 kHz
High speed
130 MHz bandwidth (−3 dB), G = +1
Settling time to 0.1%, 68 ns
50 V/μs slew rate
High output swing: ±10.1 V on ±12 V supply
Low offset voltage, 1.5 mV typical
APPLICATIONS
Receiver for ADSL, VDSL, HDSL, and proprietary
xDSL systems
Low noise instrumentation front end
Ultrasound preamps
Active filters
16-bit ADC buffers
GENERAL DESCRIPTIONS
Low Noise Op Amp
FUNCTIONAL BLOCK DIAGRAM
UT1
–IN1
+IN1
–V
100
AD8022
1
2
–
+
3
4
S
–
+
Figure 1.
8
7
6
5
AD8022
+V
S
OUT2
–IN2
+IN2
01053-001
The AD8022 consists of two low noise, high speed, voltage
feedback amplifiers. Each amplifier consumes only 4.0 mA of
quiescent current, yet has only 2.5 nV/√Hz of voltage noise.
These dual amplifiers provide wideband, low distortion
performance, with high output current optimized for stability
when driving capacitive loads. Manufactured on ADI’s high
10
voltage generation of XFCB bipolar process, the AD8022
operates on a wide range of supply voltages. The AD8022 is
available in both an 8-lead MSOP and an 8-lead SOIC. Fast over
(pA/ Hz, nV/ Hz)
eN (nV/ Hz)
voltage recovery and wide bandwidth make the AD8022 ideal as
the receive channel front end to an ADSL, VDSL, or proprietary
xDSL transceiver design.
In an xDSL line interface circuit, the AD8022’s op amps can be
configured as the differential receiver from the line transformer
1
10 10M1M100k10k1k100
Figure 2. Current and Voltage Noise vs. Frequency
FREQUENCY (Hz)
iN (pA/ Hz)
01053-002
or as independent active filters.
Rev. C
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Tel: 781.329.4700 www.analog.com
Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved.
AD8022* Product Page Quick Links
Comparable Parts
View a parametric search of comparable parts
Evaluation Kits
• AD8022 Evaluation Board
• ADSP-SC584 Evaluation Hardware for the ADSP-SC58x/
ADSP-2158x SHARC Family (349-ball CSPBGA)
• ADSP-SC589 Evaluation Hardware for the ADSP-SC58x/
ADSP-2158x SHARC Family (529-ball CSPBGA)
• Universal Evaluation Board for Dual High Speed
Operational Amplifiers
Documentation
Application Notes
• AN-356: User's Guide to Applying and Measuring
Operational Amplifier Specifications
• AN-402: Replacing Output Clamping Op Amps with Input
Clamping Amps
• AN-417: Fast Rail-to-Rail Operational Amplifiers Ease
Design Constraints in Low Voltage High Speed Systems
• AN-581: Biasing and Decoupling Op Amps in Single
Supply Applications
• AN-649: Using the Analog Devices Active Filter Design
Tool
• AN-851: A WiMax Double Downconversion IF Sampling
Receiver Design
Data Sheet
• AD8022: Dual High Speed Low Noise Op Amp Data Sheet
User Guides
• UG-128: Universal Evaluation Board for Dual High Speed
Op Amps in SOIC Packages
• UG-129: Universal Evaluation Board for Dual High Speed
Op Amps in MSOP Packages
• UG-886: Universal Evaluation Board for Dual High Speed
Op Amps Offered in 8-Lead MSOP
Tools and Simulations
• Analog Filter Wizard
• Analog Photodiode Wizard
• Op Amp Stability with Capacitive Load
• Power Dissipation vs Die Temp
• VRMS/dBm/dBu/dBV calculators
• AD8022 SPICE Macro-Model
Last Content Update: 08/30/2016
Reference Designs
• CN0039
• CN0048
Reference Materials
Product Selection Guide
• High Speed Amplifiers Selection Table
• SAR ADC & Driver Quick-Match Guide
Technical Articles
• Maximize Performance When Driving Differential ADCs
Tutorials
• MT-032: Ideal Voltage Feedback (VFB) Op Amp
• MT-033: Voltage Feedback Op Amp Gain and Bandwidth
• MT-048: Op Amp Noise Relationships: 1/f Noise, RMS
Noise, and Equivalent Noise Bandwidth
• MT-049: Op Amp Total Output Noise Calculations for
Single-Pole System
• MT-050: Op Amp Total Output Noise Calculations for
Second-Order System
• MT-052: Op Amp Noise Figure: Don't Be Misled
• MT-053: Op Amp Distortion: HD, THD, THD + N, IMD,
SFDR, MTPR
• MT-056: High Speed Voltage Feedback Op Amps
• MT-058: Effects of Feedback Capacitance on VFB and
CFB Op Amps
• MT-059: Compensating for the Effects of Input Capacitance
on VFB and CFB Op Amps Used in Current-to-Voltage
Converters
• MT-060: Choosing Between Voltage Feedback and Current
Feedback Op Amps
Design Resources
• AD8022 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all AD8022 EngineerZone Discussions
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Technical Support
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number
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AD8022 Data Sheet
TABLE OF CONTENTS
Specifications..................................................................................... 3
Absolute Maximum Ratings............................................................ 5
Maximum Power Dissipation .....................................................5
ESD Caution.................................................................................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ...................................................................... 12
Applications..................................................................................... 13
REVISION HISTORY
8/11—Rev. B to Rev. C
Changes to Figure 40 ......................................................................14
Updated Outline Dimensions........................................................16
Changes to Ordering Guide...........................................................16
5/05—Rev. A to Rev. B
Changes to Format.............................................................Universal
Deleted Evaluation Boards Section.............................................. 14
Deleted Generating DMT Section................................................ 14
Changes to Ordering Guide.......................................................... 16
Updated Outline Dimensions....................................................... 16
9/02—Rev. 0 to Rev. A
Changes to Features ..........................................................................1
Changes to Applications...................................................................1
Changes to Product Description.....................................................1
Changes to Functional Block Diagram ..........................................1
Changes to Figure 1...........................................................................1
Changes to Specifications Table......................................................2
Edits to TPCs 1, 2, 3, 6 ......................................................................5
New TPCs 7, 8....................................................................................6
Edits to TPCs 16, 17, 18....................................................................7
Edits to TPC 19..................................................................................8
Edits to TPC 28..................................................................................9
Edits to Figure 3...............................................................................11
Edits to Figure 6...............................................................................14
Updated Outline Dimensions........................................................16
DMT Modulation and Multitone Power Ratio (MTPR)....... 13
Channel Capacity and SNR....................................................... 13
Power Supply and Decoupling.................................................. 13
Layout Considerations............................................................... 15
Outline Dimensions .......................................................................16
Ordering Guide .......................................................................... 16
Rev. C | Page 2 of 16
Data Sheet AD8022
SPECIFICATIONS
At 25°C, VS = ±12 V, RL = 500 Ω, G = +1, T
Table 1.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth V
Bandwidth for 0.1 dB Flatness V
Large Signal Bandwidth1 V
Slew Rate V
Rise and Fall Time V
Settling Time 0.1% V
Overdrive Recovery Time
NOISE/DISTORTION PERFORMANCE
Distortion V
Second Harmonic fC = 1 MHz −95 dBc
Third Harmonic fC = 1 MHz −100 dBc
Multitone Input Power Ratio2 G = +7 differential
26 kHz to 132 kHz −67.2 dBc
144 kHz to 1.1 MHz −66 dBc
Voltage Noise (RTI) f = 100 kHz 2.5 nV/√Hz
Input Current Noise f = 100 kHz 1.2 pA/√Hz
DC PERFORMANCE
Input Offset Voltage −1.5 ±6 mV
T
Input Offset Current ±120 nA
Input Bias Current 2.5 5.0 μA
T
Open-Loop Gain 72 dB
INPUT CHARACTERISTICS
Input Resistance (Differential) 20 kΩ
Input Capacitance 0.7 pF
Input Common-Mode Voltage Range −11.25 to +11.75 V
Common-Mode Rejection Ratio VCM = ±3 V 98 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing RL = 500 Ω ±10.1 V
R
Linear Output Current G = +1, RL = 150 Ω, dc error = 1% ±55 mA
Short-Circuit Output Current 100 mA
Capacitive Load Drive RS = 0 Ω, <3 dB of peaking 75 pF
POWER SUPPLY
Operating Range +4.5 ±13.0 V
Quiescent Current 4.0 5.5 mA/Amp
T
Power Supply Rejection Ratio VS = ±5V to ±12 V 80 dB
OPERATING TEMPERATURE RANGE −40 +85 °C
1
FPBW = Slew Rate/(2π V
2
Multitone testing performed with 800 mV rms across a 500 Ω load at Point A and Point B on the circuit of Figure 23.
PEAK
).
= –40°C, T
MIN
OUT
OUT
OUT
OUT
OUT
OUT
V
OUT
= 50 mV p-p 110 130 MHz
= 50 mV p-p 25 MHz
= 4 V p-p 4 MHz
= 2 V p-p, G = +2 40 50 V/μs
= 2 V p-p, G = +2 30 ns
= 2 V p-p 62 ns
= 150% of max output
= +85°C, unless otherwise noted.
MAX
200 ns
voltage, G = +2
= 2 V p-p
OUT
to T
MIN
MIN
= 2 kΩ ±10.6 V
L
MIN
±7.25 mV
MAX
to T
±7.5 μA
MAX
to T
6.1 mA/Amp
MAX
Rev. C | Page 3 of 16
AD8022 Data Sheet
At 25°C, VS = ±2.5 V, RL = 500 Ω, G = +1, T
Table 2.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Small Signal Bandwidth V
Bandwidth for 0.1 dB Flatness V
Large Signal Bandwidth1 V
Slew Rate V
Rise and Fall Time V
Settling Time 0.1% V
Overdrive Recovery Time
NOISE/DISTORTION PERFORMANCE
Distortion V
Second Harmonic fC = 1 MHz −77.5 dBc
Third Harmonic fC = 1 MHz −94 dBc
Multitone Input Power Ratio2 G = +7 differential, VS = ±6 V
26 kHz to 132 kHz −69 dBc
144 kHz to 1.1 MHz −66.7 dBc
Voltage Noise (RTI) f = 100 kHz 2.3 nV/√Hz
Input Current Noise f = 100 kHz 1 pA/√Hz
DC PERFORMANCE
Input Offset Voltage −0.8 ±5.0 mV
T
Input Offset Current ±65 nA
Input Bias Current 2.0 5.0 μA
T
Open-Loop Gain 64 dB
INPUT CHARACTERISTICS
Input Resistance (Differential) 20 kΩ
Input Capacitance 0.7 pF
Input Common-Mode Voltage Range −1.83 to +2.0 V
Common-Mode Rejection Ratio VCM = ±2.5 V, VS = ±5.0 V 98 dB
OUTPUT CHARACTERISTICS
Output Voltage Swing RL = 500 Ω −1.38 to +1.48 V
Linear Output Current G = +1, RL = 100 Ω, dc error = 1% ±32 mA
Short-Circuit Output Current 80 mA
Capacitive Load Drive RS = 0 Ω, <3 dB of peaking 75 pF
POWER SUPPLY
Operating Range +4.5 ±13.0 V
Quiescent Current 3.5 4.25 mA/Amp
T
Power Supply Rejection Ratio ∆VS = ±1 V 86 dB
OPERATING TEMPERATURE RANGE −40 +85 °C
1
FPBW = Slew Rate/(2 π V
2
Multitone testing performed with 800 mV rms across a 500 Ω load at Point A and Point B on the circuit of Figure 23.
PEAK
).
= –40°C, T
MIN
= 50 mV p-p 100 120 MHz
OUT
= 50 mV p-p 22 MHz
OUT
= 3 V p-p 4 MHz
OUT
= 2 V p-p, G = +2 30 42 V/μs
OUT
= 2 V p-p, G = +2 40 ns
OUT
= 2 V p-p 75 ns
OUT
= 150% of max output
V
OUT
= +85°C, unless otherwise noted.
MAX
225 ns
voltage, G = +2
= 2 V p-p
OUT
to T
MIN
MIN
MIN
±6.25 mV
MAX
to T
7.5 μA
MAX
to T
4.4 mA/Amp
MAX
Rev. C | Page 4 of 16
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