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PDF AD9624 Data sheet ( Hoja de datos )
| Número de pieza | AD9624 | |
| Descripción | Wideband Voltage Feedback Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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a
Wideband Voltage
Feedback Amplifier
AD9624*
FEATURES
CONNECTION DIAGRAM
300 MHz Small Signal Bandwidth
200 MHz Large Signal BW (4 V p-p)
High Slew Rate: 2200 V/s
Low Distortion: –60 dB @ 20 MHz
Fast Settling: 15 ns to 0.01%
NC # 1
–INPUT 2
8 NC #
7 +VS
2.2 nV/√Hz Spectral Noise Density
+INPUT 3
6 OUTPUT
؎3 V Supply Operation
APPLICATIONS
ADC Input Driver
Differential Amplifiers
IF/RF Amplifiers
Pulse Amplifiers
OProfessional Video
DAC Current-to-Voltage
BBaseband and Video Communications
SActive Filters/lntegrators/Log Amps
OGENERAL DESCRIPTION
The AD9624 is one of a family of very high speed and wide
Lbandwidth amplifiers utilizing a voltage feedback architecture.
EThese amplifiers define a new level of performance for voltage
feedback amplifiers, especially in the categories of large signal
TEbandwidth, slew rate, settling, low distortion, and low noise.
–VS 4
AD9624
5 NC
# OPTIONALCAPACITOR CB CONNECTED HERE
DECREASES SETTLING TIME (SEE TEXT).
Other members of the AD962X amplifier family are the
AD9621 (G = +1), AD9622 (G = +2), and the AD9623
(G = +4). A separate data sheet is available from Analog
Devices for each model. Each generic device has been designed
for a different minimum stable gain setting, allowing users flex-
ibility in optimizing system performance. Dynamic performance
specifications such as slew rate, settling time, and distortion vary
from model to model. The table below summarizes key perfor-
mance attributes for the AD962X family and can be used as a
selection guide.
Proprietary design architectures have resulted in an amplifier
family that combines the most attractive attributes of both cur-
The AD9624 is offered in industrial and military temperature
rent feedback and voltage feedback amplifiers. The AD9624
ranges. Industrial versions are available in plastic DIP, SOIC,
exhibits extraordinarily accurate and fast pulse response charac- and cerdip; MIL versions are packaged in cerdips.
teristics (8 ns settling to 0.1%) as well as extremely wide small
and large signal bandwidth previously found only in current
feedback amplifiers. When combined with balanced high imped-
PRODUCT HIGHLIGHTS
1. Wide Large Signal Bandwidth
ance inputs and low input noise current more common to volt- 2. High Slew Rate
age feedback architectures, the AD9624 offers performance not
previously available in a monolithic operational amplifier.
3. Fast Settling
4. Low Distortion
*Protected by U.S. Patent 5,150,074 and others pending.
5. Output Short-Circuit Protected
6. Low Intermodulation Distortion of High Frequencies
Parameter
Minimum Stable Gain
Harmonic Distortion (20 MHz)
Large Signal Bandwidth (4 V p-p)
SSBW (0.5 V p-p)
Slew Rate
Rise/Fall Time (0.5 V Step)
Settling Time (to 0.1%/0.01%)
Input Noise (0.1 MHz – 200 MHz)
AD9621
+1
–52
130
350
1200
2.4
7/11
80
AD9622
+2
–66
160
220
1500
1.7
8/14
49
AD9623
+4
–64
190
270
2100
1.6
8/14
36
AD9624
+6
–66
200
300
2200
1.5
8/14
32
Units
V/V
dB
MHz
MHz
V/µs
ns
ns
µV rms
REV. 0
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
which may result from its use. No license is granted by implication or
otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 617/329-4700
Fax: 617/326-8703
1 page  
–Typical Performance (RL = 100 ⍀; AV = +8, unless otherwise noted) AD9624
80 +90 +2
+180
+2
+180
GAIN
60
PHASE
40
+75
+60 0
+45
+30 –2
+15
AV = –5
AV = –7
AV = –10
+135
+90
+45
0
–45
0
–2
AV = 6
AV = 8
+135
+90
+45
0
–45
20
0 –4
AV = –5
–90
–4
AV = 16
–90
–15
–135
–135
0
–30 –6
–180
–6
AV = –7, –10
–45
–180
–20
10k
100k 1M 10M 100M
FREQUENCY – Hz
–60
600M
–8
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
–8
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
Figure 4. Open-Loop Gain and
Phase
–50
VOUT = 2V p-p
–60 2nd HARMONIC
RL = 100Ω
–70
O2nd HARMONIC
–80 RL = 500Ω
B–90
S–100
O–110
3rd HARMONIC
RL = 100Ω
3rd HARMONIC
RL = 500Ω
L–120
1 2 4 6 10 20 40 60
FREQUENCY – MHz
EFigure 7. Harmonic Distortion
TEvs. Frequency
Figure 5. Inverting Frequency
Response
50
40
30
50
OUT
20 50
10
1 10 100
FREQUENCY – MHz
Figure 8. Intermodulation Distortion
(IMD)
Figure 6. Noninverting Frequency
Response
+20
+25
+30
+35
+40
+45
+50
+55 CMRR
+60
+65
+70
1
PSRR
10 100 1k 10k 100k 1M 10M 100M 1G
FREQUENCY – Hz
Figure 9. CMRR and PSRR vs.
Frequency
+2 +180
AV = 8
+135
RFB = 510Ω
0
RFF = 75Ω
+90
+45
–2 0
RLOAD = 500Ω
–45
–4 –90
–135
–6 –180
RLOAD = 50Ω
–8
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
Figure 10. Frequency Response
vs. RLOAD
10 10
88
66
44
CURRENT
2
VOLTAGE
2
+0.1
+0.08
+0.06
+0.04
+0.02
TEST CIRCUIT
100Ω
6pF
0
–0.02
–0.04
–0.06
VOUT = 2V STEP
–0.08
–0.1
0 10 20 30 40 50
TIME – ns
Figure 11. Third Order Intercept
27 4
VOLTAGE
23 3
CURRENT
19 2
0.1
0.08
0.06
VOUT = 2V STEP
0.04
0.02
0
–0.02
–0.04
–0.06
TEST CIRCUIT
100Ω
6pF
–0.08
–0.1
1
10 100
1K 10K 100K
TIME – ns
Figure 12. Long-Term Settling Time
30 30
26
RS
22 1k CL
510
73
RS
18
tSETTLING
14
26
22
18
14
1
102
103 10 4 105
FREQUENCY – Hz
1
106
Figure 13. Input Spectral Noise
Density
3.5 4.0 4.5 5.0
SUPPLY VOLTAGE – ±Volts
5.5
Figure 14. Output Level and Supply
Current vs. Supply Voltage
10
1
10
CLOAD – pF
10
100
Figure 15. Settling Time vs.
Capacitive Load
REV. 0
–5–
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet AD9624.PDF ] | |
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