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ADA4898-2YRDZ

P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20
High Voltage, Low Noise, Low Distortion,
Unity-Gain Stable, High Speed Op Amp
Data Sheet
ADA4898-1/ADA4898-2
FEATURES
Ultralow noise
0.9 nV/√Hz
2.4 pA/√Hz
1.2 nV/√Hz at 10 Hz
Ultralow distortion: −93 dBc at 500 kHz
Wide supply voltage range: ±5 V to ±16 V
High speed
−3 dB bandwidth: 65 MHz (G = +1)
Slew rate: 55 V/µs
Unity gain stable
Low input offset voltage: 160 µV maximum
Low input offset voltage drift: 1 μV/°C
Low input bias current: −0.1 µA
Low input bias current drift: 2 nA/°C
Supply current: 8 mA
Power-down feature for single 8-lead package
APPLICATIONS
Instrumentation
Active filters
DAC buffers
SAR ADC drivers
Optoelectronics
CONNECTION DIAGRAM
NC
1
–IN
2
+IN
3
–V
S
4
PD
8
+V
S
7
V
OUT
6
NC
5
NC = NO CONNECT
TOP VIEW
(Not to Scale)
ADA4898-1
07037-001
Figure 1. Single 8-Lead ADA4898-1 SOIC_N_EP (RD-8-1)
07037-050
V
OUT1
1
–IN1
2
+IN1
3
–V
S
4
+V
S
8
V
OUT2
7
–IN2
6
+IN2
5
ADA4898-2
TOP VIEW
(Not to Scale)
Figure 2. Dual 8-Lead ADA4898-2 SOIC_N_EP (RD-8-2)
GENERAL DESCRIPTION
The ADA4898-1/ADA4898-2 are ultralow noise and distortion,
unity gain stable, voltage feedback op amps that are ideal for use in
16-bit and 18-bit systems with power supplies from ±5 V to
±16 V. The ADA4898-1/ADA4898-2 feature a linear, low noise
input stage and internal compensation that achieves high slew rates
and low noise.
With the wide supply voltage range, low offset voltage, and wide
bandwidth, the ADA4898-1/ADA4898-2 are extremely versatile,
and feature a cancellation circuit that reduces input bias current.
The ADA4898-1/ADA4898-2 are available in an 8-lead SOIC
package that features an exposed metal paddle to improve power
dissipation and heat transfer to the negative supply plane. This
EPAD offers a significant thermal relief over traditional plastic
packages. The ADA4898-1/ADA4898-2 are rated to work over
the extended industrial temperature range of −40°C to +105°C.
07037-002
FREQUENCY (Hz)
VOLTAGE NOISE (nV/√Hz)
CURRENT NOISE (pA/√Hz)
1
0.1
1
10
0.1
1
10
10 100 1k 10k 100k
CURRENT
VOLTAGE
Figure 3. Input Voltage Noise and Current Noise vs. Frequency
Rev. E
Document Feedback
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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 ©2008–2015 Analog Devices, Inc. All rights reserved.
Technical Support www.analog.com
ADA4898-1/ADA4898-2 Data Sheet
TABLE OF CONTENTS
Features .............................................................................................. 1
Applications ....................................................................................... 1
Connection Diagram ....................................................................... 1
General Description ......................................................................... 1
Revision History ............................................................................... 2
Specifications ..................................................................................... 3
±15 V Supply ................................................................................. 3
±5 V Supply ................................................................................... 4
Absolute Maximum Ratings ............................................................ 5
Thermal Resistance ...................................................................... 5
Maximum Power Dissipation ..................................................... 5
ESD Caution .................................................................................. 5
Pin Configurations and Function Descriptions ........................... 6
Typical Performance Characteristics ............................................. 7
Test Circuits ..................................................................................... 13
Theory of Operation ...................................................................... 14
PD
(Power-Down) Pin for the ADA4898-1 ............................ 14
Applications Information .............................................................. 15
Higher Feedback Resistor Gain Operation ............................. 15
Recommended Values for Various Gains ................................ 15
Noise ............................................................................................ 16
Circuit Considerations .............................................................. 16
PCB Layout ................................................................................. 16
Power Supply Bypassing ............................................................ 16
Grounding ................................................................................... 16
Outline Dimensions ....................................................................... 17
Ordering Guide .......................................................................... 17
REVISION HISTORY
5/15—Rev. D to Rev. E
Deleted 0.1 Hz to 10 Hz Noise Section, Figure 45, and
Figure 46; Renumbered Sequentially ........................................... 14
Updated Outline Dimensions ....................................................... 17
Changes to Ordering Guide .......................................................... 17
5/12—Rev. C to Rev. D
Changes to Figure 2 Caption ........................................................... 1
Updated Outline Dimensions ....................................................... 17
Changes to Ordering Guide .......................................................... 17
2/10—Rev. B to Rev. C
Added ADA4898-2 ........................................................ Throughout
Changes to Features .......................................................................... 1
Changes to Table 1 ............................................................................ 3
Changes to Table 2 ............................................................................ 4
Changes to Figure 38, Figure 40, Figure 41 ................................. 14
Changes to Figure 46 ...................................................................... 15
Changes to Figure 47 ...................................................................... 16
Changes to PCB Layout Section ................................................... 17
Changes to Ordering Guide .......................................................... 20
6/09—Rev. A to Rev. B
Changes to General Description Section ....................................... 1
Changes to Specifications Section ................................................... 3
Changes to Figure 29 and Figure 31 ............................................ 11
Added Figure 32 ............................................................................. 12
Added Figure 41 ............................................................................. 13
Changes to
PD
(Power-Down) Pin Section ................................ 14
Added Table 6 ................................................................................. 14
Changes to Figure 45 ...................................................................... 15
8/08—Rev. 0 to Rev. A
Changes to General Description Section ....................................... 1
Changes to Table 5 ............................................................................. 6
Changes to Figure 17 ......................................................................... 9
Changes to Figure 28 ...................................................................... 10
Changes to Figure 29 and Figure 32 ............................................ 11
Added 0.1 Hz to 10 Hz Noise Section.......................................... 14
Added Figure 42 and Figure 43; Renumbered Sequentially ..... 14
Changes to Grounding Section..................................................... 16
Updated Outline Dimensions ....................................................... 17
5/08—Revision 0: Initial Version
Rev. E | Page 2 of 20
Data Sheet ADA4898-1/ADA4898-2
SPECIFICATIONS
±15 V SUPPLY
T
A
= 25°C, G = +1, R
F
= 0 Ω, R
G
open, R
L
= 1 kΩ to GND (for G > 1, R
F
= 100 Ω), unless otherwise noted.
Table 1.
Parameter Conditions Min Typ Max Unit
DYNAMIC PERFORMANCE
−3 dB Bandwidth V
OUT
= 100 mV p-p 65 MHz
V
OUT
= 2 V p-p 14 MHz
Bandwidth for 0.1 dB Flatness G = +2, V
OUT
= 2 V p-p 3.3 MHz
Slew Rate V
OUT
= 5 V step 55 V/µs
Settling Time to 0.1% V
OUT
= 5 V step 85 ns
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion SFDR f = 100 kHz, V
OUT
= 2 V p-p −116 dBc
f = 500 kHz, V
OUT
= 2 V p-p −93 dBc
f = 1 MHz, V
OUT
= 2 V p-p −79 dBc
Input Voltage Noise f = 1 kHz 0.9 nV/√Hz
Input Current Noise
f = 1 kHz
2.4
pA/√Hz
DC PERFORMANCE
Input Offset Voltage
R
F
= 1 kΩ, see Figure 43
20
125
µV
Input Offset Voltage Drift R
F
= 1 kΩ, see Figure 43 1 µV/°C
Input Bias Current
R
F
= 1 kΩ, see Figure 43 −0.1 −0.4 µA
Input Bias Offset Current R
F
= 1 kΩ, see Figure 43 0.03 0.3 µA
Input Bias Current Drift R
F
= 1 kΩ, see Figure 43 2 nA/°C
Open-Loop Gain V
OUT
= ±5 V 99 103 dB
INPUT CHARACTERISTICS
Input Resistance Differential mode 5 kΩ
Common mode 30 MΩ
Input Capacitance
Differential mode
3.2
pF
Common mode 2.5 pF
Input Common-Mode Voltage Range See Figure 43 ±11 V
Common-Mode Rejection Ratio V
CM
= ±2 V −103 −126 dB
PD
(POWER-DOWN) PIN (ADA4898-1)
PD
Input Voltages Chip powered down ≤−14 V
Chip enabled ≥−13 V
PD
Turn On Time V
OUT
= 100 mV p-p 100 ns
PD
Turn Off Time V
OUT
= 100 mV p-p 20 μs
Input Leakage Current
PD
= +V
S
0.1
µA
PD
= −V
S
−0.2 µA
OUTPUT CHARACTERISTICS
Output Voltage Swing R
L
// (R
F
+ R
G
) = 500 Ω, see Figure 43 −11.0 to +11.8 −11.7 to +12.1 V
R
L
// (R
F
+ R
G
) = 1 kΩ, see Figure 43 −12.5 to +12.5 −12.8 to +12.7 V
Linear Output Current f = 100 kHz, SFDR = −70 dBc, R
L
= 150 Ω 40 mA
Short-Circuit Current Sinking/sourcing 150 mA
Off Isolation f = 1 MHz,
PD
= −V
S
80 dB
POWER SUPPLY
Operating Range ±4.5 ±16.5 V
Quiescent Current per Amplifier
PD
= +V
S
7.9 8.7 mA
PD
= −V
S
0.1 0.3 mA
Positive Power Supply Rejection Ratio +V
S
= 15 V to 17 V, −V
S
= −15 V −98 −107 dB
Negative Power Supply Rejection Ratio +V
S
= 15 V, −V
S
= −15 V to −17 V −100 −114 dB
Rev. E | Page 3 of 20
P1-P3P4-P6P7-P9P10-P12P13-P15P16-P18P19-P20

ADA4898-2YRDZ

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Buy ADA4898-2YRDZ
Manufacturer:
Analog Devices Inc.
Description:
High Speed Operational Amplifiers High VTG Low Noise Low Distort High Spd
Lifecycle:
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