REV. A
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a
AD8057/AD8058
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700 World Wide Web Site: http://www.analog.com
Fax: 781/326-8703 © Analog Devices, Inc., 1999
Low Cost, High Performance
Voltage Feedback, 325 MHz Amplifiers
CONNECTION DIAGRAMS (TOP VIEWS)
FEATURES
Low Cost Single (AD8057) and Dual (AD8058)
High Speed
325 MHz, –3 dB Bandwidth (G = +1)
1000 V/ms 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, R
L
= 1 kV
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 mSOIC
APPLICATIONS
Imaging
DVD/CD
Photodiode Preamp
A-to-D Driver
Professional Cameras
Filters
PRODUCT DESCRIPTION
The AD8057 (single) and AD8058 (dual) are very high perfor-
mance 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.
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 param-
eters rarely found in high speed amplifiers.
The AD8057 and AD8058 are available in standard SOIC
packaging as well as tiny SOT-23-5 (AD8057) and m SOIC
(AD8058). These amplifiers are available in the industrial tem-
perature range of –40 C to +85 C.
FREQUENCY – MHz
1 100010
GAIN – dB
100
5
4
–5
3
2
1
0
–1
–2
–3
–4
G = +2
G = +10
G = +5
G = +1
Figure 1. Small Signal Frequency Response
SOT-23-5 (RT-5)
+IN
+V
S
–V
S
AD8057
1
2
3
5
4 –IN
V
OUT
(Not to Scale)
SO-8 (SOIC)

8
7
6
5
1
2
3
4
NC
–IN
+IN
NC
+V
S
V
OUT
NC–V
S
AD8057
(Not to Scale)
NC = NO CONNECT
RM-8 (mSOIC)
SO-8 (SOIC)
OUT1
–IN1
+IN1
–V
S
+V
S
OUT2
–IN2
+IN2
1
2
3
4
8
7
6
5
(Not to Scale)
AD8058