AD8012 Analog Devices, AD8012 Datasheet

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AD8012

Manufacturer Part Number
AD8012
Description
Dual Low Power Current Feedback Amplifier
Manufacturer
Analog Devices
Datasheet

Specifications of AD8012

-3db Bandwidth
350MHz
Slew Rate
2.25kV/µs
Vos
1mV
Ib
3µA
# Opamps Per Pkg
2
Input Noise (nv/rthz)
2.5nV/rtHz
Vcc-vee
3V to 12V
Isy Per Amplifier
900µA
Packages
SOIC,SOP

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PRODUCT DESCRIPTION
The AD8012 is a dual, low power, current feedback amplifier
capable of providing 350 MHz bandwidth while using only
1.7 mA per amplifier. It is intended for use in high frequency,
wide dynamic range systems where low distortion and high
speed are essential and low power is critical.
With only 1.7 mA of supply current, the AD8012 also offers
exceptional ac specifications such as 20 ns settling time and
2,250 V/µs slew rate. The video specifications are 0.02% differ-
ential gain and 0.06 degree differential phase, excellent for such
a low power amplifier. In addition, the AD8012 has a low offset
of 1.5 mV.
The AD8012 is well suited for any application that requires high
performance with minimal power.
The product is available in standard 8-lead SOIC or MSOP
packages and operates over the industrial temperature range
–40°C to +85°C.
*Protected under U.S. Patent Number 5,537,079.
REV. B
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. 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.
FEATURES
Low Power
High Output Current, 125 mA
High Speed
Low Distortion
Good Video Specifications (R
Low Offset Voltage, 1.5 mV
Low Voltage Noise, 2.5 nV/√Hz
Available in 8-Lead SOIC and 8-Lead MSOP
APPLICATIONS
XDSL, HDSL Line Drivers
ADC Buffers
Professional Cameras
CCD Imaging Systems
Ultrasound Equipment
Digital Cameras
1.7 mA/Amplifier Supply Current
Fully Specified for
350 MHz, –3 dB Bandwidth (G = +1)
150 MHz, –3 dB Bandwidth (G = +2)
2,250 V/ s Slew Rate
20 ns Settling Time to 0.1%
–72 dBc Worst Harmonic @ 500 kHz, R
–66 dBc Worst Harmonic @ 5 MHz, R
0.02% Differential Gain Error
0.06 Differential Phase Error
Gain Flatness 0.1 dB to 40 MHz
60 ns Overdrive Recovery
5 V and +5 V Supplies
L
= 1 k , G = +2)
L
= 1 k
L
= 100
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
+
Figure 2. Differential Drive Circuit for XDSL Applications
V
IN
Figure 1. Distortion vs. Load Resistance, V
Frequency = 500 kHz
–40
–50
–60
–70
–80
–90
10
AMP 1
+V
–V
FUNCTIONAL BLOCK DIAGRAM
S
S
OUT1
–IN1
+IN1
–V
V
© 2003 Analog Devices, Inc. All rights reserved.
S
REF
Low Power Amplifier
1
2
3
4
R1
R2
AD8012
TRANSFORMER
Np:Ns
R
L
100
SECOND
Dual 350 MHz
THIRD
8
7
6
5
+V
OUT2
–IN2
+IN2
R
OR
135
AD8012
L
S
= 100
G = +2
V
R
OUT
F
= 750
www.analog.com
= 2V p-p
V
S
OUT
= ± 5 V,
+
1k
LINE
POWER
IN dB
*

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AD8012 Summary of contents

Page 1

... V/µs slew rate. The video specifications are 0.02% differ- ential gain and 0.06 degree differential phase, excellent for such a low power amplifier. In addition, the AD8012 has a low offset of 1.5 mV. The AD8012 is well suited for any application that requires high performance with minimal power ...

Page 2

... AD8012–SPECIFICATIONS DUAL SUPPLY (@ Parameter DYNAMIC PERFORMANCE –3 dB Small Signal Bandwidth 0.1 dB Bandwidth Large Signal Bandwidth Slew Rate Rise and Fall Time Settling Time Overdrive Recovery NOISE/HARMONIC PERFORMANCE Distortion Second Harmonic Third Harmonic Output IP3 IMD Crosstalk Input Voltage Noise ...

Page 3

... T –T MIN MAX –T MIN MAX T –T MIN MAX Single Supply –3– AD8012 , unless otherwise noted.) Min Typ Max 220 300 90 140 85 43/24 60 1,200 –87/–71 –77/–61 –89/–72 – ...

Page 4

... The output stage of the AD8012 is designed for maximum load current capability result, shorting the output to common can cause the AD8012 to source or sink 500 mA. To ensure proper operation necessary to observe the maximum power derating curves. Direct connection of the output to either power supply rail can destroy the device ...

Page 5

... 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 AD8012 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 ...

Page 6

... AD8012–Typical Performance Characteristics 20mV TPC 1. 100 mV Step Response +2, V ± Ω TPC Step Response +2, V 20mV TPC 3. 100 mV Step Response – ± Ω ± 2.5 V operation is identical single-supply operation 5ns = ± 2 TPC Step Response ...

Page 7

... V TPC 11. Distortion vs. Load Resistance Frequency = 500 kHz –40 –60 –80 10ns –100 = ± 2 100 Ω TPC 12. Distortion vs. Frequency –7– AD8012 1V 10ns = ± OUT R = 750 F THIRD SECOND 10 100 R – L THIRD ...

Page 8

... AD8012 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 0.1 1 FREQUENCY MHz TPC 13. Gain Flatness; V –40 –50 SECOND –60 –70 THIRD –80 –90 10 100 R – L TPC 14. Distortion vs. Load Resistance; V Frequency = 500 kHz –40 THIRD R = 100 L –60 SECOND R = 100 L SECOND –80 THIRD –100 1 FREQUENCY – MHz TPC 15. Distortion vs. Frequency ...

Page 9

... 750 F 115 R = 100 + –5 100 500 TPC 24. Open-Loop Transimpedance and S Phase vs. Frequency –9– AD8012 = + –PSRR = 750 F +PSRR 100k 1M 10M 100M FREQUENCY – ± 750 + ...

Page 10

... AD8012 100 LOAD – TPC 25. Output Swing vs. Load 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 100 1k FREQUENCY – Hz TPC 26. Noise vs. Frequency 5MHz 750 TOTAL SUPPLY VOLTAGE TPC 27. Output Swing vs. Supply 5V +5V 1k 10k 30 28 ...

Page 11

... FREQUENCY – MHz TPC 33. Gain Flatness +3V V OUT OUT – 2V/DIV 20ns OUT = ± + 750 Ω 100 Ω p µ AD8012 = 0.3V p 750 100 0V 0V ...

Page 12

... AD8012 THEORY OF OPERATION The AD8012 is a dual, high speed CF amplifier that attains new levels of bandwidth (BW), power, distortion, and signal swing capability. Its wide dynamic performance (including noise) is the result of both a new complementary high speed bipolar process and a new and unique architectural design. The AD8012 ...

Page 13

... EMI tends to induce itself equally onto both the positive and negative signal lines result, a receiver with good common-mode rejection will amplify the original signal while rejecting induced (common-mode) EMI. –13– AD8012 +5V 0 12,000 FEET 66 ...

Page 14

... The output signal swing of the AD8012 can be increased to about ± 3.9 V before clipping occurs. This increases the peak-to-peak output of the differential amplifier to 15.6 V. Because the signal ...

Page 15

... Figure 8. Universal SOIC Noninverter Top Silkscreen Figure 9. Universal SOIC Noninverter Top Figure 10. Universal SOIC Noninverter Bottom REV. B Figure 11. Universal MSOP Noninverter Top Silkscreen Figure 12. Universal MSOP Noninverter Top Figure 13. Universal MSOP Noninverter Bottom –15– AD8012 ...

Page 16

... AD8012 0.25 (0.0098) 0.10 (0.0040) COPLANARITY CONTROLLING DIMENSIONS ARE IN MILLIMETERS; INCH DIMENSIONS (IN PARENTHESES) ARE ROUNDED-OFF MILLIMETER EQUIVALENTS FOR REFERENCE ONLY AND ARE NOT APPROPRIATE FOR USE IN DESIGN Revision History Location 12/03—Data Sheet changed from REV REV. B. Renumbered figures and TPCs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .Universal Updated ORDERING GUIDE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 5 Updated OUTLINE DIMENSIONS ...

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