1.5 GHz, Ultrahigh Speed Op Amp
Data Sheet
AD8000
Rev. C Document Feedback
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FEATURES
High speed
1.5 GHz, −3 dB bandwidth (G = +1)
650 MHz, full power bandwidth (G = +2, V
O
= 2 V p-p)
Slew rate: 4100 V/μs
0.1% settling time: 12 ns
Excellent video specifications
0.1 dB flatness: 170 MHz
Differential gain: 0.02%
Differential phase: 0.01°
Output overdrive recovery: 22 ns
Low noise: 1.6 nV/√Hz input voltage noise
Low distortion over wide bandwidth
75 dBc SFDR at 20 MHz
62 dBc SFDR at 50 MHz
Input offset voltage: 1 mV typical
High output current: 100 mA
Wide supply voltage range: 4.5 V to 12 V
Supply current: 13.5 mA
Power-down mode
APPLICATIONS
Professional video
High speed instrumentation
Video switching
IF/RF gain stage
CCD imaging
GENERAL DESCRIPTION
The AD8000 is an ultrahigh speed, high performance, current
feedback amplifier. Using Analog Devices, Inc., proprietary
eXtra Fast Complementary Bipolar (XFCB) process, the ampli-
fier can achieve a small signal bandwidth of 1.5 GHz and a slew
rate of 4100 V/μs.
The AD8000 has low spurious-free dynamic range (SFDR) of
75 dBc at 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.
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.
CONNECTION DIAGRAMS
05321-001
POWER DOWN
FEEDBACK
–IN
+IN
OUTPUT
+V
S
NC
–V
S
AD8000
TOP VIEW
(Not to Scale)
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PADDLE IS CONNECTED TO GROUND.
3
4
1
2
6
5
8
7
Figure 1. 8-Lead AD8000, 3 mm × 3 mm LFCSP (CP-8-13)
05321-002
NOTES
1. NC = NO CONNECT.
2. THE EXPOSED PADDLE IS CONNECTED TO GROUND.
FEEDBACK
1
–IN
2
+IN
3
–V
S
4
POWER DOWN
8
+V
S
7
OUTPUT
6
NC
5
AD8000
TOP VIEW
(Not to Scale)
Figure 2. 8-Lead AD8000 SOIC_N_EP (RD-8-1)
The AD8000 power-down mode reduces the supply current to
1.3 mA. The amplifier is available in a tiny 8-lead LFCSP package,
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 underdevelopment.
–7
–6
–5
–4
–3
–2
–1
0
1
2
3
NORMALIZED GAIN (dB)
05321-003
FREQUENCY (MHz)
1 10010 1000
V
S
= 5V
R
L
= 150
V
OUT
= 2V p-p
G = +2, R
F
= 432
Figure 3. Large Signal Frequency Response
