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PDF AD9623 Data sheet ( Hoja de datos )
| Número de pieza | AD9623 | |
| Descripción | Wideband Voltage Feedback Amplifier | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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a
Wideband Voltage
Feedback Amplifier
AD9623*
FEATURES
CONNECTION DIAGRAM
270 MHz Small Signal Bandwidth
190 MHz Large Signal BW (4 V p-p)
High Slew Rate: 2100 V/s
NC # 1
8 NC #
Low Distortion: –64 dB @ 20 MHz
Fast Settling: 15 ns to 0.01%
2.6 nV/√Hz Spectral Noise Density
–INPUT 2
+INPUT 3
7 +VS
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 AD9623 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
AD9623
5 NC
# OPTIONAL CAPACITOR 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 AD9624
(G = +6). 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-
Proprietary design architectures have resulted in an amplifier
mance attributes for the AD962X family and can be used as a
family that combines the most attractive attributes of both cur-
selection guide.
rent feedback and voltage feedback amplifiers. The AD9623
exhibits extraordinarily accurate and fast pulse response charac- The AD9623 is offered in industrial and military temperature
teristics (8 ns settling to 0.1%) as well as extremely wide small
ranges. Industrial versions are available in plastic DIP, SOIC,
and large signal bandwidth previously found only in current
and cerdip; MIL versions are packaged in cerdips.
feedback amplifiers. When combined with balanced high imped-
ance inputs and low input noise current more common to volt-
age feedback architectures, the AD9623 offers performance not
previously available in a monolithic operational amplifier.
PRODUCT HIGHLIGHTS
1. Wide Large Signal Bandwidth
2. High Slew Rate
3. Fast Settling
*Protected by U.S. Patent 5,150,074 and others pending.
4. Low Distortion
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 Ω; AV = +4, unless otherwise noted) AD9623
80
GAIN
+90 +2
+75
+180
+135
+2
+180
+135
60
PHASE
40
+60 0
+45
+30 –2
+15
AV = –3
+90
+45
0
–45
0 +90
AV = 6
–2
+45
0
AV = 4
–45
20 0 –4 –90 –4 –90
–15 –135
–135
0
–20
10k
100k 1M 10M 100M
FREQUENCY – Hz
–30
–45
–60
600M
–6
AV = –6
–180
–8
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
–6
AV = 6,12
AV = 12
–180
–8
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
Figure 4. Open-Loop Gain and Phase
Figure 5. Inverting Frequency
Figure 6. Noninverting Frequency
–50
VOUT = 2Vp-p
–60
2nd HARMONIC
RL = 100Ω
–70
O–80 2nd HARMONIC
RL = 500Ω
B–90
S–100
O–110
3rd HARMONIC
RL = 100Ω
3rd HARMONIC
RL = 500 Ω
L–120
1
2
4 6 10
20 40 60
FREQUENCY – MHz
EFigure 7. Harmonic Distortion
TEvs. Frequency
Response
50
40
30
5500
OUT
50
20
10
1 10 100
FREQUENCY – MHz
Figure 8. Third Order Intercept
Response
+20
+25
+30
+35
+40
+45
+50
+55
+60 CMRR
+65
+70
1
PSRR
10 100 1k 10k 100k 1M 10M 100M 1G
FREQUENCY – Hz
Figure 9. CMRR and PSRR vs.
Frequency
+2
+180
+0.1
+0.1
AV = 4
RFB = 390Ω
+135
+0.08
TEST CIRCUIT
+0.08
VOUT = 2V STEP
0
RFF = 130Ω
+90
+0.06
100 Ω
6pF
+0.06
+45 +0.04
–2
RLOAD = 500Ω 0
+0.02
+0.04
+0.02
–45 0
0
–4
–6
RLOAD = 50Ω
–90
–135
–180
–0.02
–0.04
–0.06
–0.08
VOUT = 2V STEP
–0.02
–0.04
–0.06
–0.08
TEST CIRCUIT
100 Ω
6pF
–8
50 100 150 200 250 300 350 400 450 500
FREQUENCY – MHz
Figure 10. Frequency Response
vs. RLOAD
–0.1
0 10 20 30 40 50
TIME – ns
Figure 11. Short-Term Settling Time
–0.1
1
10 100 1K 10K 100K
TIME – ns
Figure 12. Long-Term Settling Time
10 10
88
66
44
CURRENT
2
VOLTAGE
2
1102
103 104 105
FREQUENCY – Hz
106 1
Figure 13. Input Spectral Noise
Density
27 4
VOLTAGE
23 3
CURRENT
19 2
3.5 4.0 4.5 5.0
SUPPLY VOLTAGE – ±Volts
5.5
Figure 14. Output Level and Sup-
ply Current vs. Supply Voltage
30 30
26
RS
22 1k CL
390
130
RS
18
tSETTLING
14
26
22
18
14
10 10
1 10 100
CLOAD – pF
Figure 15. Settling Time vs.
Capacitive Load
REV. 0
–5–
5 Page | ||
| Páginas | Total 6 Páginas | |
| PDF Descargar | [ Datasheet AD9623.PDF ] | |
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