AD8057_15 Datasheet, PDF (1/16 Pages) Analog Devices – Low Cost, High Performance Voltage Feedback, 325 MHz Amplifier

Data Sheet
Low Cost, High Performance
Voltage Feedback, 325 MHz Amplifier
AD8057/AD8058
FEATURES
Low cost single (AD8057) and dual (AD8058)
High speed
325 MHz, −3 dB bandwidth (G = +1)
1000 V/μs slew rate
Gain flatness: 0.1 dB to 28 MHz
Low noise
7 nV/√Hz
Low power
5.4 mA/amplifier typical supply current at 5 V
Low distortion
−85 dBc at 5 MHz, RL = 1 kΩ
Wide supply range from 3 V to 12 V
Small packaging
AD8057 is available in an 8-lead SOIC and 5-lead SOT-23
AD8058 is available in an 8-lead SOIC and an 8-lead MSOP
APPLICATIONS
Imaging
DVD/CD
Photodiode preamp
Analog-to-digital driver
Professional cameras filters
GENERAL 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 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 parameters rarely found in high speed amplifiers.
The AD8057 and AD8058 are available in standard SOIC
packaging as well as tiny 5-lead SOT-23 (AD8057) and 8-lead
MSOP (AD8058) packages. These amplifiers are available in the
industrial temperature range of −40°C to +85°C.
CONNECTION DIAGRAMS
AD8057
V_OUT 1
5 +V_S
–V_S 2
+IN 3
4 –IN
(Not to Scale)
Figure 1. RT-5 (SOT-23)
AD8057
NC 1
8 NC
–IN 2
7 +V_S
+IN 3
6 V_OUT
–V_S 4 _{(Not to Scale)} 5 NC
NC = NO CONNECT
Figure 2. R-8 (SOIC)
OUT1 1
–IN1 2
AD8058
8 +V_S
7 OUT2
+IN1 3
6 –IN2
–V_S 4
(Not to Scale)
5 +IN2
Figure 3. RM-8 (MSOP) and R-8 (SOIC)
5
4
3
2
1
0
G = +1
–1
G = +5
–2
–3
G = +10
–4
G = +2
–5
1
10
100
1000
FREQUENCY (MHz)
Figure 4. Small Signal Frequency Response
Rev. E
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