Low Cost, High Performance
Voltage Feedback, 325 MHz Amplifiers
AD8057/AD8058
FEATURES
Low Cost Single (AD8057) and Dual (AD8058)
High Speed
325 MHz –3 dB Bandwidth (G = +1)
1000 V/␮s Slew Rate
Gain Flatness 0.1 dB to 28 MHz
Low Noise
7 nV/√Hz
Low Power
5.4 mA/Amplifier Typical Supply Current @ 5 V
Low Distortion
–85 dBc @ 5 MHz, RL = 1 k⍀
Wide Supply Range from 3 V to 12 V
Small Packaging
AD8057 Available in SOIC-8 and SOT-23-5
AD8058 Available in SOIC-8 and MSOP
CONNECTION DIAGRAMS (TOP VIEW)
RT-5 (SOT-23-5)
AD8057
VOUT 1
5
R-8 (SOIC)
+VS
–VS 2
+IN 3
4
–IN
NC 1
8
NC
–IN 2
7
+VS
+IN 3
6
VOUT
5
NC
–VS 4
(Not to Scale)
AD8057
(Not to Scale)
NC = NO CONNECT
RM-8 (MSOP)
R-8 (SOIC)
APPLICATIONS
Imaging
DVD/CD
Photodiode Preamp
A-to-D Driver
Professional Cameras
Filters
OUT1
1
–IN1
AD8058
8
+VS
2
7
OUT2
+IN1
3
6
–IN2
–VS
4
5
+IN2
(Not to Scale)
GENERAL DESCRIPTION
The AD8057 (single) and AD8058 (dual) are very high performance amplifiers with a very low cost. The balance between
cost and performance make them ideal for many applications.
The AD8057 and AD8058 will reduce the need to qualify a
variety of specialty amplifiers.
5
The AD8057 and AD8058 are voltage feedback amplifiers with
the bandwidth and slew rate normally found in current feedback
amplifiers. The AD8057 and AD8058 are low power amplifiers
having low quiescent current and a wide supply range from 3 V
to 12 V. They have noise and distortion performance required
for high end video systems as well as dc performance parameters
rarely found in high speed amplifiers.
1
The AD8057 and AD8058 are available in standard SOIC
packaging as well as tiny SOT-23-5 (AD8057) and MSOP
(AD8058) packages. These amplifiers are available in the industrial temperature range of –40°C to +85°C.
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.
4
3
GAIN (dB)
2
G = +1
0
–1
G = +5
–2
G = +2
–3
G = +10
–4
–5
1
10
100
FREQUENCY (MHz)
1000
Figure 1. Small Signal Frequency Response
© 2003 Analog Devices, Inc. All rights reserved.
AD8057/AD8058–SPECIFICATIONS
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/HARMONIC PERFORMANCE
Total Harmonic Distortion
SFDR
Third Order Intercept
Crosstalk, Output to Output
Input Voltage Noise
Input Current Noise
Differential Gain Error
Differential Phase Error
Overload Recovery
(@ TA = 25ⴗC, VS = ⴞ5 V, RL = 100 ⍀, RF = 0 ⍀, Gain = +1,
unless otherwise noted.)
Conditions
Min
325
95
175
30
850
1150
30
MHz
MHz
MHz
MHz
V/µs
V/µs
ns
fC = 5 MHz, VO = 2 V p-p, RL = 1 kΩ
fC = 20 MHz, VO = 2 V p-p, RL = 1 kΩ
f = 5 MHz, VO = 2 V p-p, RL = 150 Ω
f = 5 MHz, VO = 2 V p-p
f = 5 MHz, G = +2
f = 100 kHz
f = 100 kHz
NTSC, G = +2, RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
NTSC, G = +2, RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
VIN = 200 mV p-p, G = +1
–85
–62
–68
–35
–60
7
0.7
0.01
0.02
0.15
0.01
30
dBc
dBc
dB
dBm
dB
nV/√Hz
pA/√Hz
%
%
Degree
Degree
ns
1
2.5
3
0.5
3.0
TMIN to TMAX
Input Offset Voltage Drift
Input Bias Current
TMIN to TMAX
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Voltage Swing
Capacitive Load Drive
POWER SUPPLY
Operating Range
Quiescent Current for AD8057
Quiescent Current for AD8058
Power Supply Rejection Ratio
Unit
G = +1, VO = 0.2 V p-p
G = –1, VO = 0.2 V p-p
G = +1, VO = 2 V p-p
G = +1, VO = 0.2 V p-p
G = +1, VO = 2 V Step, RL = 2 kΩ
G = +1, VO = 4 V Step, RL = 2 kΩ
G = +2, VO = 2 V Step
DC PERFORMANCE
Input Offset Voltage
Input Offset Current
Open-Loop Gain
AD8057/AD8058
Typ
Max
VO = ± 2.5 V, RL = 2 kΩ
VO = ± 2.5 V, RL = 150 Ω
5
2.5
± 0.75
50
50
55
52
10
2
+Input
RL = 1 kΩ
VCM = ± 2.5 V
–4.0
48
RL = 2 kΩ
RL = 150 Ω
30% Overshoot
+4.0
60
–4.0
+4.0
± 3.9
30
VS = ± 5 V to ± 1.5 V
Specifications subject to change without notice.
–2–
54
± 5.0
6.0
14.0
59
7.5
15
mV
mV
µV/°C
µA
µA
µA
dB
dB
MΩ
pF
V
dB
V
V
pF
V
mA
mA
dB
AD8057/AD8058
SPECIFICATIONS
(@ TA = 25ⴗC, VS = 5 V, RL = 100 ⍀, RF = 0 ⍀, Gain = +1, unless otherwise noted.)
Parameter
DYNAMIC PERFORMANCE
–3 dB Bandwidth
Bandwidth for 0.1 dB Flatness
Slew Rate
Settling Time to 0.1%
NOISE/HARMONIC PERFORMANCE
Total Harmonic Distortion
Crosstalk, Output to Output
Input Voltage Noise
Input Current Noise
Differential Gain Error
Differential Phase Error
Conditions
Min
300
155
28
700
35
MHz
MHz
MHz
V/µs
ns
fC = 5 MHz, VO = 2 V p-p, RL = 1 kΩ
fC = 20 MHz, VO = 2 V p-p, RL = 1 kΩ
f = 5 MHz, G = +2
f = 100 kHz
f = 100 kHz
NTSC, G = +2, RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
NTSC, G = +2, RL = 150 Ω
NTSC, G = +2, RL = 1 kΩ
–75
–54
–60
7
0.7
0.05
0.05
0.10
0.02
dBc
dBc
dB
nV/√Hz
pA/√Hz
%
%
Degree
Degree
1
2.5
3
0.5
3.0
50
45
55
52
mV
mV
µV/°C
µA
µA
µA
dB
dB
48
10
2
± 0.9 to ± 3.4
60
MΩ
pF
V
dB
0.9 to 4.1
1.2 to 3.8
30
V
V
pF
TMIN to TMAX
Input Offset Voltage Drift
Input Bias Current
TMIN to TMAX
INPUT CHARACTERISTICS
Input Resistance
Input Capacitance
Input Common-Mode Voltage Range
Common-Mode Rejection Ratio
OUTPUT CHARACTERISTICS
Output Voltage Swing
Capacitive Load Drive
Unit
G = +1, VO = 0.2 V p-p
G = +1, VO = 2 V p-p
VO = 0.2 V p-p
G = +1, VO = 2 V Step, RL = 2 kΩ
G = +2, VO = 2 V Step
DC PERFORMANCE
Input Offset Voltage
Input Offset Current
Open-Loop Gain
AD8057/AD8058
Typ
Max
5
2.5
0.75
VO = ± 1.25 V, RL = 2 kΩ to Midsupply
VO = ± 1.25 V, RL = 150 Ω to Midsupply
+Input
RL = 1 kΩ
VCM = ± 2.5 V
RL = 2 kΩ
RL = 150 Ω
30% Overshoot
POWER SUPPLY
Operating Range
Quiescent Current for AD8057
Quiescent Current for AD8058
Power Supply Rejection Ratio
54
Specifications subject to change without notice.
–3–
5.0
5.4
13.5
58
7.0
14
V
mA
mA
dB
AD8057/AD8058
ABSOLUTE MAXIMUM RATINGS 1
MAXIMUM POWER DISSIPATION
Supply Voltage (+VS to –VS) . . . . . . . . . . . . . . . . . . . . . 12.6 V
Internal Power Dissipation2
SOIC Package (R) . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.8 W
SOT-23-5 Package (RT) . . . . . . . . . . . . . . . . . . . . . . . 0.5 W
MSOP Package (RM) . . . . . . . . . . . . . . . . . . . . . . . . . 0.6 W
Input Voltage (Common Mode) . . . . . . . . . . . . . . . . . . . . ± VS
Differential Input Voltage . . . . . . . . . . . . . . . . . . . . . . . ± 4.0 V
Output Short Circuit Duration
. . . . . . . . . . . . . . . . . . Observe Power Derating Curves
Storage Temperature Range (R) . . . . . . . . . –65°C to +125°C
Operating Temperature Range (A Grade) . . . –40°C to +85°C
Lead Temperature Range (Soldering 10 sec) . . . . . . . . . 300°C
The maximum power that can be safely dissipated by the
AD8057/AD8058 is limited by the associated rise in junction
temperature. Exceeding a junction temperature of 175°C for an
extended period can result in device failure. While the AD8057/
AD8058 is internally short-circuit protected, this may not be
sufficient to guarantee that the maximum junction temperature
(150°C) is not exceeded under all conditions.
To ensure proper operation, it is necessary to observe the maximum power derating curves.
2.0
TJ = 150ⴗC
MAXIMUM POWER DISSIPATION (W)
NOTES
1
Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2
Specification is for device in free air:
8-Lead SOIC Package: ␪JA = 160°C/W
5-Lead SOT-23-5 Package: ␪JA = 240°C/W
8-Lead MSOP Package: ␪JA = 200°C/W
1.5
8-LEAD SOIC
1.0
8-LEAD MSOP
0.5
SOT-23-5
0
–50 –40 –30 –20 –10 0 10 20 30 40 50 60
AMBIENT TEMPERATURE (ⴗC)
70
80
90
Figure 2. Plot of Maximum Power Dissipation vs.
Temperature
ORDERING GUIDE
Model
Temperature Range
Package Description
Package Option
Branding
AD8057AR
AD8057ACHIPS
AD8057AR-REEL
AD8057AR-REEL7
AD8057ART-R2
AD8057ART-REEL
AD8057ART-REEL7
AD8057ARTZ-REEL7*
AD8058AR
AD8058ACHIPS
AD8058AR-REEL
AD8058AR-REEL7
AD8058ARZ-REEL7*
AD8058ARM
AD8058ARM-REEL
AD8058ARM-REEL7
AD8058ARMZ-REEL7*
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
–40°C to +85°C
8-Lead Narrow Body SOIC
Die
8-Lead SOIC, 13" Reel
8-Lead SOIC, 7" Reel
5-Lead SOT-23
5-Lead SOT-23, 13" Reel
5-Lead SOT-23, 7" Reel
5-Lead SOT-23, 7" Reel
8-Lead Narrow Body SOIC
Die
8-Lead SOIC, 13" Reel
8-Lead SOIC, 7" Reel
8-Lead SOIC, 7" Reel
8-Lead MSOP
8-Lead MSOP, 13" Reel
8-Lead MSOP, 7" Reel
8-Lead MSOP, 7" Reel
R-8
Waffle Pak
R-8
R-8
RT-5
RT-5
RT-5
RT-5
R-8
Waffle Pak
R-8
R-8
R-8
RM-8
RM-8
RM-8
RM-8
Standard
N/A
Standard
Standard
H7A
H7A
H7A
H7A
Standard
N/A
Standard
Standard
Standard
H8A
H8A
H8A
H8A
*Lead free
CAUTION
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
AD8057/AD8058 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.
–4–
AD8057/AD8058
OUTLINE DIMENSIONS
8-Lead Mini Small Outline Package [MSOP]
(RM-8)
8-Lead Standard Small Outline Package [SOIC]
(R-8)
Dimensions shown in millimeters
Dimensions shown in millimeters and (inches)
5.00 (0.1968)
4.80 (0.1890)
3.00
BSC
8
5
4.00 (0.1574)
3.80 (0.1497)
4.90
BSC
3.00
BSC
1
8
5
1
4
4
1.27 (0.0500)
BSC
PIN 1
0.65 BSC
0.25 (0.0098)
0.10 (0.0040)
1.10 MAX
0.15
0.00
0.38
0.22
COPLANARITY
0.10
6.20 (0.2440)
5.80 (0.2284)
8ⴗ
0ⴗ
0.23
0.08
COPLANARITY
SEATING
0.10
PLANE
0.80
0.60
0.40
0.51 (0.0201)
0.31 (0.0122)
COMPLIANT TO JEDEC STANDARDS MO-187AA
5-Lead Small Outline Transistor Package [SOT-23]
(RT-5)
Dimensions shown in millimeters
2.90 BSC
4
2.80 BSC
1.60 BSC
1
2
3
PIN 1
0.95 BSC
1.30
1.15
0.90
1.90
BSC
1.45 MAX
0.15 MAX
0.50 (0.0196)
ⴛ 45ⴗ
0.25 (0.0099)
8ⴗ
0.25 (0.0098) 0ⴗ 1.27 (0.0500)
0.40 (0.0157)
0.17 (0.0067)
COMPLIANT TO JEDEC STANDARDS MS-012AA
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
SEATING
PLANE
5
1.75 (0.0688)
1.35 (0.0532)
0.50
0.30
SEATING
PLANE
0.22
0.08
10ⴗ
5ⴗ
0ⴗ
COMPLIANT TO JEDEC STANDARDS MO-178AA
–14–
0.60
0.45
0.30