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Analog Devices Semiconductor Electronic Components Datasheet

AD829AR Datasheet

Low Noise Video Op Amp

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Data Sheet
FEATURES
High speed
120 MHz bandwidth, gain = −1
230 V/µs slew rate
90 ns settling time to 0.1%
Ideal for video applications
0.02% differential gain
0.04° differential phase
Low noise
1.7 nV/√Hz input voltage noise
1.5 pA/√Hz input current noise
Excellent dc precision
1 mV maximum input offset voltage (over temperature)
0.3 µV/°C input offset drift
Flexible operation
Specified for ±5 V to ±15 V operation
±3 V output swing into a 150 Ω load
External compensation for gains 1 to 20
5 mA supply current
Available in tape and reel in accordance with EIA-481A standard
GENERAL DESCRIPTION
The"% is a low noise (1.7 nV/√Hz), high speed op amp with
custom compensation that provides the user with gains of 1 to 20
while maintaining a bandwidth >50 MHz. Its 0.04° differential
phase and 0.02% differential gain performance at 3.58 MHz and
4.43 MHz, driving reverse-terminated 50 Ω or 75 Ω cables, makes
it ideally suited for professional video applications. The AD829
achieves its 230 V/µs uncompensated slew rate and 750 MHz
gain bandwidth while requiring only 5 mA of current from
power supplies.
The external compensation pin of the AD829 gives it
exceptional versatility. For example, compensation can be
selected to optimize the bandwidth for a given load and power
supply voltage. As a gain-of-2 line driver, the −3 dB bandwidth
can be increased to 95 MHz at the expense of 1 dB of peaking.
Its output can also be clamped at its external compensation pin.
The AD829 exhibits excellent dc performance. It offers a minimum
open-loop gain of 30 V/mV into loads as low as 500 Ω, a low input
voltage noise of 1.7 nV/√Hz, and a low input offset voltage of 1 mV
maximum. Common-mode rejection and power supply rejection
ratios are both 120 dB.
This op amp is also useful in multichannel, high speed data
conversion where its fast (90 ns to 0.1%) settling time is important.
In such applications, the AD829 serves as an input buffer for 8-bit to
10-bit ADCs and as an output I/V converter for high speed DACs.
Rev. I
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.
High Speed, Low Noise
Video Op Amp
AD829
CONNECTION DIAGRAM
OFFSET NULL 1
–IN 2
AD829
8 OFFSET NULL
7 +VS
+IN 3
6 OUTPUT
–VS
4
TOP VIEW
(Not to Scale)
5
CCOMP
Figure 1. 8-Lead PDIP (N), CERDIP (Q), and SOIC (R)
NC 4
–IN 5
NC 6
+IN 7
NC 8
3 2 1 20 19
AD829
TOP VIEW
(Not to Scale)
18 NC
17 +V
16 NC
15 OUTPUT
14 NC
9 10 11 12 13
NC = NO CONNECT
Figure 2. 20-Terminal LCC
Operating as a traditional voltage feedback amplifier, the AD829
provides many of the advantages that a transimpedance amplifier
offer. A bandwidth >50 MHz can be maintained for a range of
gains through the replacement of the external compensation
capacitor. The AD829 and the transimpedance amplifier are both
unity-gain stable and provide similar voltage noise performance
(1.7 nV/√Hz); however, the current noise of the AD829
(1.5 pA/√Hz) is less than 10% of the noise of transimpedance
amplifiers. The inputs of the AD829 are symmetrical.
PRODUCT HIGHLIGHTS
1. The input voltage noise of 2 nV/√Hz, current noise of
1.5 pA/√Hz, and 50 MHz bandwidth for gains of 1 to 20
make the AD829 an ideal preamp.
2. A differential phase error of 0.04 and a 0.02% differential
gain error, at the 3.58 MHz NTSC, 4.43 MHz PAL, and
SECAM color subcarrier frequencies, make the op amp an
outstanding video performer for driving reverse-terminated
50 Ω and 75 Ω cables to ±1 V (at their terminated end).
3. The AD829 can drive heavy capacitive loads.
4. Performance is fully specified for operation from ±5 V
to ±15 V supplies.
5. The AD829 is available in PDIP, CERDIP, and small outline
packages. Chips and MIL-STD-883B parts are also available.
The 8-lead SOIC is available for the extended temperature
range (−40°C to +125°C).
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
©2011 Analog Devices, Inc. All rights reserved.


Analog Devices Semiconductor Electronic Components Datasheet

AD829AR Datasheet

Low Noise Video Op Amp

No Preview Available !

AD829* Product Page Quick Links
Last Content Update: 11/01/2016
Comparable Parts
View a parametric search of comparable parts
Evaluation Kits
• Universal Evaluation Board for Single High Speed
Operational Amplifiers
Documentation
Application Notes
• 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
Data Sheet
• AD829: High Speed, Low Noise Video Op Amp Data Sheet
• AD829: Military Data Sheet
User Guides
• UG-135: Evaluation Board for Single, High Speed
Operational Amplifiers (8-Lead SOIC and Exposed Paddle)
Tools and Simulations
• Analog Filter Wizard
• Analog Photodiode Wizard
• Power Dissipation vs Die Temp
• VRMS/dBm/dBu/dBV calculators
• AD829 SPICE Macro-Model
Reference Materials
Product Selection Guide
• High Speed Amplifiers Selection Table
Tutorials
• MT-032: Ideal Voltage Feedback (VFB) Op Amp
• MT-033: Voltage Feedback Op Amp Gain and Bandwidth
• MT-047: Op Amp Noise
• 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-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-060: Choosing Between Voltage Feedback and Current
Feedback Op Amps
Design Resources
• AD829 Material Declaration
• PCN-PDN Information
• Quality And Reliability
• Symbols and Footprints
Discussions
View all AD829 EngineerZone Discussions
Sample and Buy
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Technical Support
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number
* This page was dynamically generated by Analog Devices, Inc. and inserted into this data sheet. Note: Dynamic changes to
the content on this page does not constitute a change to the revision number of the product data sheet. This content may be
frequently modified.


Part Number AD829AR
Description Low Noise Video Op Amp
Maker Analog Devices
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AD829AR Datasheet PDF






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