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Ultralow Distortion, High Speed
0.95 nV/√Hz Voltage Noise Op Amp
AD8099
FEATURES
Ultralow noise: 0.95 nV/√Hz, 2.6 pA/√Hz
Ultralow distortion
2
nd
harmonic R
L
= 1 kΩ , G = +2
−92 dB @ 10 MHz
3
rd
harmonic R
L
= 1 kΩ , G = +2
−105 dB @ 10 MHz
High speed
GBWP: 3.8 GHz
–3 dB bandwidth:
700 MHz (G = +2)
550 MHz (G = +10)
Slew rate:
475 V/µs (G = +2)
1350 V/µs (G = +10)
New pinout
Custom external compensation, gain range –1, +2 to +10
Supply current: 15 mA
Offset voltage: 0.5 mV max
Wide supply voltage range: 5 V to 12 V
APPLICATIONS
Pre-amplifiers
Receivers
Instrumentation
Filters
IF and baseband amplifiers
A-to-D drivers
DAC buffers
Optical electronics
CONNECTION DIAGRAMS
DISABLE
1
FEEDBACK
2
–IN
3
+IN
4
8
7
+V
S
V
OUT
C
C
04511-0-001
FEEDBACK
1
–IN
2
+IN
3
–V
S 4
8
DISABLE
+V
S
V
OUT
C
C
04511-0-002
7
6
6
5
–V
S
5
Figure 1. 8-Lead CSP (CP-8)
Figure 2. 8-Lead SOIC-ED (RD-8)
GENERAL DESCRIPTION
The AD8099 is an ultralow noise (0.95 nV/√Hz) and distortion
(–92 dBc @10 MHz) voltage feedback op amp, the combination
of which make it ideal for 16- and 18-bit systems. The AD8099
features a new, highly linear, low noise input stage that increases
the full power bandwidth (FPBW) at low gains with high slew
rates. ADI’s proprietary next generation XFCB process enables
such high performance amplifiers with relatively low power.
The AD8099 features external compensation, which lets the
user set the gain bandwidth product. External compensation
allows gains from +2 to +10 with minimal trade-off in band-
width. The AD8099 also features an extremely high slew rate of
1350 V/µs, giving the designer flexibility to use the entire
dynamic range without trading off bandwidth or distortion.
The AD8099 settles to 0.1% in 18 ns and recovers from
overdrive in 50 ns.
The AD8099 drives 100 Ω loads at breakthrough performance
levels with only 15 mA of supply current. With the wide supply
voltage range (5 V to 12 V), low offset voltage (0.1 mV typ),
wide bandwidth (700 MHz for G = +2), and a GBWP up to
3.8 GHz, the AD8099 is designed to work in a wide variety of
applications.
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.
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.
The AD8099 is available in a 3 mm × 3 mm lead frame chip
scale package (LFCSP) with a new pinout that is specifically
optimized for high performance, high speed amplifiers. The
new LFCSP package and pinout enable the breakthrough
performance that previously was not achievable with amplifiers.
The AD8099 is rated to work over the extended industrial
temperature range, −40°C to +125°C.
–40
G = +2
= 2V p-p
V
–50 V
OUT
±5V
S
=
R
L
= 1kΩ
–60
–70
–80
–90
–100
–110
–120
–130
0.1
HARMONIC DISTORTION (dBc)
1.0
FREQUENCY (MHz)
10.0
Figure 3 . Harmonic Distortion vs. Frequency and Gain (SOIC)
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
© 2004 Analog Devices, Inc. All rights reserved.
04511-A-013
SOLID LINE – SECOND HARMONIC
DOTTED LINE – THIRD HARMONIC
AD8099
TABLE OF CONTENTS
Specifications..................................................................................... 3
Specifications with ±5 V Supply................................................. 3
Specifications with +5 V Supply................................................. 4
Absolute Maximum Ratings............................................................ 5
Maximum Power Dissipation ..................................................... 5
ESD Caution.................................................................................. 5
Typical Performance Characteristics ............................................. 6
Theory of Operation ...................................................................... 15
Applications..................................................................................... 16
Using the AD8099 ...................................................................... 16
Circuit Components................................................................... 16
Recommended Values ............................................................... 17
Circuit Configurations .............................................................. 17
Performance vs. Component values ........................................ 19
Total Output Noise Calculations and Design......................... 20
Input Bias Current and DC Offset ........................................... 21
DISABLE
Pin and Input Bias Cancellation............................. 21
16-Bit ADC Driver..................................................................... 22
Circuit Considerations .............................................................. 23
Design Tools and Technical Support ....................................... 23
Outline Dimensions ....................................................................... 25
Ordering Guide............................................................................... 26
REVISION HISTORY
6/04—Data Sheet changed from REV. A to REV. B
Change to General Description ...................................................... 1
Changes to Maximum Power Dissipation section ...................... 5
Changes to Applications section .................................................. 16
Changes to Table 7.......................................................................... 24
Changes to Ordering Guide .......................................................... 26
1/04—Data Sheet changed from REV. 0 to REV. A
Inserted new Figure 3................................................................... 1
Changes to Specifications ............................................................ 3
Inserted new Figures 22 to 34 ..................................................... 8
Inserted new Figures 51 to 55 ................................................... 14
Changes to Theory of Operation section ................................ 16
Changes to Circuit Components section................................. 17
Changes to Table 4...................................................................... 18
Changes to Figure 60.................................................................. 18
Changes to Total Output Noise Calculations and
Design section........................................................................ 21
Changes to Figure 60.................................................................. 22
Changes to Figure 62.................................................................. 23
Changes to 16-Bit ADC Driver section ................................... 23
Changes to Table 6...................................................................... 23
Additions to PCB Layout section ............................................. 23
11/03—Revision 0: Initial Version
Rev. B | Page 2 of 28
AD8099
SPECIFICATIONS
SPECIFICATIONS WITH ±5 V SUPPLY
T
A
= 25°C, G = +2, R
L
= 1 kΩ to ground, unless otherwise noted. Refer to Figure 60 through Figure 66 for component values and
gain configurations .
Table 1.
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth
Bandwidth for 0.1 dB Flatness (SOIC/CSP)
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion (dBc) HD2/HD3
Input Voltage Noise
Input Current Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Bias Current Drift
Input Bias Offset Current
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
DISABLE PIN
DISABLE Input Voltage
Turn-Off Time
Turn-On Time
Enable Pin Leakage Current
DISABLE Pin Leakage Current
OUTPUT CHARACTERISTICS
Output Overdrive Recovery Time (Rise/Fall)
Output Voltage Swing
Short-Circuit Current
Off Isolation
POWER SUPPLY
Operating Range
Quiescent Current
Quiescent Current (Disabled)
Positive Power Supply Rejection Ratio
Negative Power Supply Rejection Ratio
Conditions
G = +5, V
OUT
= 0.2 V p-p
G = +5, V
OUT
= 2 V p-p
G = +2, V
OUT
= 0.2 V p-p
G = +10, V
OUT
= 6 V Step
G = +2, V
OUT
= 2 V Step
G = +2, V
OUT
= 2 V Step
f
C
= 500 kHz, V
OUT
= 2 V p-p, G = +10
f
C
= 10 MHz, V
OUT
= 2 V p-p, G = +10
f = 100 kHz
f = 100 kHz, DISABLE pin floating
f = 100 kHz, DISABLE pin = +V
S
Min
450
205
1120
435
Typ
510
235
34/25
1350
470
18
–102/–111
–84/–92
0.95
2.6
5.2
0.1
2.3
–6
–0.1
3
0.06
85
4
10
2
–3.7 to +3.7
105
<2.4
105
39
17
35
30/50
–3.6 to +3.7
–3.8 to +3.8
131/178
–61
±5
15
1.7
91
94
±6
16
2
21
44
0.5
–13
–2
1
Max
Unit
MHz
MHz
MHz
V/µs
V/µs
ns
dBc
dBc
nV/√Hz
pA/√Hz
pA/√Hz
mV
µV/°C
µA
µA
nA/°C
µA
dB
kΩ
MΩ
pF
V
dB
V
ns
ns
µA
µA
ns
V
V
mA
dB
V
mA
mA
dB
dB
DISABLE pin floating
DISABLE pin = +V
S
82
Differential mode
Common mode
V
CM
= ±2.5 V
Output disabled
50% of DISABLE to < 10% of final V
OUT
,
V
IN
= 0.5 V, G = +2
50% of DISABLE to < 10% of final V
OUT
,
V
IN
= 0.5 V, G = +2
DISABLE =+5 V
DISABLE = –5 V
V
IN
= -2.5 V to 2.5 V, G =+2
R
L
= 100 Ω
R
L
= 1 kΩ
Sinking and sourcing
f = 1 MHz, DISABLE = low
98
–3.4 to +3.5
–3.7 to +3.7
DISABLE = Low
+V
S
= 4 V to 6 V, –V
S
= –5 V (input referred)
+V
S
= 5 V, –V
S
= –6 V to –4 V (input referred)
85
86
Rev. B | Page 3 of 28
AD8099
SPECIFICATIONS WITH +5 V SUPPLY
V
S
= 5 V @ T
A
= 25°C, G = +2, R
L
= 1 kΩ to midsupply, unless otherwise noted. Refer to Figure 60 through Figure 66 for component
values and gain configurations .
Table 2.
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth
Bandwidth for 0.1 dB Flatness (SOIC/CSP)
Slew Rate
Settling Time to 0.1%
NOISE/DISTORTION PERFORMANCE
Harmonic Distortion (dBc) HD2/HD3
Input Voltage Noise
Input Current Noise
DC PERFORMANCE
Input Offset Voltage
Input Offset Voltage Drift
Input Bias Current
Input Bias Offset Current
Input Bias Offset Current Drift
Open-Loop Gain
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
DISABLE PIN
DISABLE Input Voltage
Turn-Off Time
Turn-On Time
Enable Pin Leakage Current
DISABLE Pin Leakage Current
OUTPUT CHARACTERISTICS
Overdrive Recovery Time (Rise/Fall)
Output Voltage Swing
Short-Circuit Current
Off Isolation
POWER SUPPLY
Operating Range
Quiescent Current
Quiescent Current (Disabled)
Positive Power Supply Rejection Ratio
Negative Power Supply Rejection Ratio
Conditions
G = +5, V
OUT
= 0.2 V p-p
G = +5, V
OUT
= 2 V p-p
G = +2, V
OUT
= 0.2 V p-p
G = +10, V
OUT
= 2 V Step
G = +2, V
OUT
= 2 V Step
G = +2, V
OUT
= 2 V Step
f
C
= 500 kHz, V
OUT
= 1 V p-p, G = +10
f
C
= 10 MHz, V
OUT
= 1 V p-p, G = +10
f = 100 kHz
f = 100 kHz, DISABLE pin floating
f = 100 kHz, DISABLE pin = +V
S
Min
415
165
630
340
Typ
440
210
33/23
715
365
18
–82/–94
–80/–75
0.95
2.6
5.2
0.1
2.5
–6.2
–0.2
0.05
2.4
81
4
10
2
1.3 to 3.7
105
<2.4
105
61
16
33
50/70
1.2 to 3.8
1.2 to 3.8
60/80
–61
±5
14.5
1.4
89
90
±6
15.4
1.7
21
44
0.5
–13
–2
1
Max
Unit
MHz
MHz
MHz
V/µs
V/µs
ns
dBc
dBc
nV/√Hz
pA/√Hz
pA/√Hz
mV
µV/°C
µA
µA
µA
nA/°C
dB
kΩ
MΩ
pF
V
dB
V
ns
ns
µA
µA
ns
V
V
mA
dB
V
mA
mA
dB
dB
DISABLE pin floating
DISABLE pin = +V
S
V
OUT
= 1 V to 4 V
Differential mode
Common mode
76
V
CM
= 2 V to 3 V
Output disabled
50% of DISABLE to <10% of Final V
OUT
,
V
IN
= 0.5 V, G = +2
50% of DISABLE to <10% of Final V
OUT
,
V
IN
= 0.5 V, G = +2
DISABLE = 5 V
DISABLE = 0 V
V
IN
= 0 to 2.5 V, G = +2
R
L
= 100 Ω
R
L
= 1 kΩ
Sinking and Sourcing
f = 1 MHz, DISABLE = Low
88
1.5 to 3.5
1.2 to 3.8
DISABLE = Low
+V
S
= 4.5 V to 5.5 V, –V
S
= 0 V (input referred)
+V
S
=5 V, -V
S
= –0.5 V to +0.5 V (input referred)
84
84
Rev. B | Page 4 of 28
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