1.5 GHz Ultrahigh Speed Op Amp
AD8000
CONNECTION DIAGRAMS
AD8000
FEATURES
High speed
1.5 GHz, −3 dB bandwidth (G = +1)
650 MHz, full power bandwidth (G = +2, VO = 2 V p-p)
Slew rate: 4100 V/µs
0.1% settling time: 12 ns
Excellent video specifications
0.1 dB flatness: 170 MHz
POWER DOWN
FEEDBACK
–IN
1
2
3
4
8
+V
S
7
OUTPUT
6 NC
5 –V
+IN
S
Differential gain: 0.02%
NC = NO CONNECT
Differential phase: 0.01°
Figure 1. 8-Lead AD8000, 3 mm × 3 mm LFCSP (CP-8-2)
Output overdrive recovery: 22 ns
Low noise: 1.6 nV/√Hz input voltage noise
Low distortion over wide bandwidth
75 dBc SFDR @ 20 MHz
AD8000
FEEDBACK
–IN
1
2
3
4
8
7
6
5
POWER DOWN
+V
S
62 dBc SFDR @ 50 MHz
+IN
OUTPUT
NC
Input offset voltage: 1 mV typ
High output current: 100 mA
Wide supply voltage range: 4.5 V to 12 V
Supply current: 13.5 mA
–V
S
NC = NO CONNECT
Power-down mode
Figure 2. 8-Lead AD8000 SOIC/EP (RD-8-1)
APPLICATIONS
Professional video
High speed instrumentation
Video switching
3
2
V
R
V
= ±5V
= 150Ω
S
L
= 2V p-p
OUT
1
IF/RF gain stage
0
CCD imaging
–1
–2
–3
–4
–5
–6
–7
GENERAL DESCRIPTION
The AD8000 is an ultrahigh speed, high performance, current
feedback amplifier. Using ADI’s proprietary eXtra Fast Com-
plementary Bipolar (XFCB) process, the amplifier can achieve a
small signal bandwidth of 1.5 GHz and a slew rate of 4100 V/µs.
G = +2, R = 432Ω
F
The AD8000 has low spurious-free dynamic range (SFDR) of
75 dBc @ 20 MHz and input voltage noise of 1.6 nV/√Hz. The
AD8000 can drive over 100 mA of load current with minimal
distortion. The amplifier can operate on +5 V to 6 V. These
specifications make the AD8000 ideal for a variety of applica-
tions, including high speed instrumentation.
1
10
100
1000
FREQUENCY (MHz)
Figure 3. Large Signal Frequency Response
The AD8000 power-down mode reduces the supply current to
1.3 mA. The amplifier is available in a tiny 8-lead LFCSP pack-
age, as well as in an 8-lead SOIC package. The AD8000 is rated
to work over the extended industrial temperature range (−40°C
to +125°C). A triple version of the AD8000 (AD8003) is under-
development.
With a differential gain of 0.02%, differential phase of 0.01°, and
0.1 dB flatness out to 170 MHz, the AD8000 has excellent video
specifications, which ensure that even the most demanding
video systems maintain excellent fidelity.
Rev. 0
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