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PDF MAX4305 Data sheet ( Hoja de datos )
| Número de pieza | MAX4305 | |
| Descripción | Op Amps | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de MAX4305 (archivo pdf) en la parte inferior de esta página. Total 12 Páginas | ||
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19-4757; Rev 3; 10/98
EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL
740MHz, Low-Noise, Low-Distortion
Op Amps in SOT23-5
General Description
The MAX4104/MAX4105/MAX4304/MAX4305 op amps
feature ultra-high speed, low noise, and low distortion in
a SOT23 package. The unity-gain-stable MAX4104
requires only 20mA of supply current while delivering
625MHz bandwidth and 400V/µs slew rate. The
MAX4304, compensated for gains of +2V/V or greater,
delivers a 730MHz bandwidth and a 1000V/µs slew
rate. The MAX4105 is compensated for a minimum gain
of +5V/V and delivers a 410MHz bandwidth and a
1400V/sec slew rate. The MAX4305 has +10V/V mini-
mum gain compensation and delivers a 340MHz band-
width and a 1400V/µs slew rate.
Low voltage noise density of 2.1nV/√Hz and -88dBc
spurious-free dynamic range make these devices ideal
for low-noise/low-distortion video and telecommunica-
tions applications. These op amps also feature a wide
output voltage swing of ±3.7V and ±70mA output current-
drive capability. For space-critical applications, they
are available in a miniature 5-pin SOT23 package.
________________________Applications
Video ADC Preamp
Pulse/RF Telecom Applications
Video Buffers and Cable Drivers
Ultrasound
Active Filters
ADC Input Buffers
Typical Application Circuit
INPUT
MAX4304
330Ω
330Ω
8 to 16-BIT
HIGH-SPEED
ADC
Features
o Low 2.1nV/√Hz Voltage Noise Density
o Ultra-High 740MHz -3dB Bandwidth (MAX4304,
AVCL = 2V/V)
o 100MHz 0.1dB Gain Flatness (MAX4104/4105)
o 1400V/µs Slew Rate (MAX4105/4305)
o -88dBc SFDR (5MHz, RL = 100Ω) (MAX4104/4304)
o High Output Current Drive: ±70mA
o Low Differential Gain/Phase Error: 0.01%/0.01°
(MAX4104/4304)
o Low ±1mV Input Offset Voltage
o Available in Space-Saving 5-Pin SOT23 Package
Selector Guide
PART
MINIMUM
STABLE
GAIN (V/V)
BANDWIDTH
(MHz)
PIN-PACKAGE
MAX4104
1
625 5-pin SOT23, 8-pin SO
MAX4304
MAX4105
MAX4305
2
5
10
740 5-pin SOT23, 8-pin SO
410 5-pin SOT23, 8-pin SO
340 5-pin SOT23, 8-pin SO
Ordering Information
PART
TEMP. RANGE
PIN-
SOT
PACKAGE TOP MARK
MAX4104ESA -40°C to +85°C 8 SO
—
MAX4104EUK-T -40°C to +85°C 5 SOT23-5 ACCO
Ordering Information continued at end of data sheet.
Pin Configurations
TOP VIEW
OUT 1
VEE 2
IN+ 3
5 VCC
4 IN-
MAX4104
MAX4105
MAX4304
MAX4305
ADC BUFFER WITH GAIN (AVCL = 2V/V)
SOT23-5
Pin Configurations continued at end of data sheet.
________________________________________________________________ Maxim Integrated Products 1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.
Free Datasheet http://www.Datasheet4U.com
1 page  
740MHz, Low-Noise, Low-Distortion
Op Amps in SOT23-5
Typical Operating Characteristics (continued)
(VCC = +5V, VEE = -5V, RF = 330Ω, RL = 100Ω, TA = +25°C, unless otherwise noted.)
MAX4304
LARGE-SIGNAL GAIN
vs. FREQUENCY (AVCL = +2)
5
VOUT = 2Vp-p
4
3
2
1
0
-1
-2
-3
-4
-5
100k
1M 10M 100M
FREQUENCY (Hz)
1G
POSITIVE POWER-SUPPLY REJECTION
vs. FREQUENCY
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
100k
1M
10M 100M
1G
FREQUENCY (Hz)
VOLTAGE NOISE DENSITY vs. FREQUENCY
(INPUT REFERRED)
100
MAX4105
LARGE-SIGNAL GAIN
vs. FREQUENCY (AVCL = +5)
5
VOUT = 2Vp-p
4
3
2
1
0
-1
-2
-3
-4
-5
100k
1M 10M 100M
FREQUENCY (Hz)
1G
NEGATIVE POWER-SUPPLY REJECTION
vs. FREQUENCY
20
10
0
-10
-20
-30
-40
-50
-60
-70
-80
100k
1M
10M 100M
1G
FREQUENCY (Hz)
CURRENT NOISE DENSITY vs. FREQUENCY
(INPUT REFERRED)
100
MAX4305
LARGE-SIGNAL GAIN
vs. FREQUENCY (AVCL = +10)
5
VOUT = 2Vp-p
4
3
2
1
0
-1
-2
-3
-4
-5
100k
1M 10M 100M
FREQUENCY (Hz)
1G
0
-10
-20
-30
-40
-50
-60
-70
-80
-90
-100
10k
COMMON-MODE REJECTION
vs. FREQUENCY
100k 1M 10M 100M
FREQUENCY (Hz)
1G
CLOSED-LOOP OUTPUT IMPEDANCE
vs. FREQUENCY
1000
100
10 10
10
1
0.1
1
1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
1
1 10 100 1k 10k 100k 1M 10M
FREQUENCY (Hz)
0.01
100k
1M 10M 100M
FREQUENCY (Hz)
1G
_______________________________________________________________________________________ 5
Free Datasheet http://www.Datasheet4U.com
5 Page 
740MHz, Low-Noise, Low-Distortion
Op Amps in SOT23-5
30
25
20
15
10
5
0
-5
-10
-15
-20
100k
CL = 15pF
CL = 10pF
CL = 5pF
1M 10M 100M
FREQUENCY (Hz)
1G
Figure 3a. MAX4104 Frequency Response with Capacitive
Load and No Isolation Resistor
30
25
20
15
10
5
0
-5
-10
-15
-20
100k
CL = 15pF
CL = 10pF
CL = 5pF
1M 10M 100M
FREQUENCY (Hz)
1G
Figure 3b. MAX4304 Frequency Response with Capacitive
Load and No Isolation Resistor
25
20
15
10
5
0
-5
-10
-15
-20
-25
100k
CL = 15pF
CL = 10pF
CL = 5pF
1M 10M 100M
FREQUENCY (Hz)
1G
25
20
15
10
5
0
-5
-10
-15
-20
-25
100k
CL = 15pF
CL = 10pF
CL = 5pF
1M 10M 100M
FREQUENCY (Hz)
1G
Figure 3c. MAX4105 Frequency Response with Capacitive
Load and No Isolation Resistor
Figure 3d. MAX4305 Frequency Response with Capacitive
Load and No Isolation Resistor
appears inductive at high frequencies. This inductance
forms an L-C resonant circuit with the capacitive load,
which causes peaking in the frequency response and
degrades the amplifier’s phase margin.
The MAX4104/MAX4105/MAX4304/MAX4305 drive
capacitive loads up to 10pF without oscillation.
However, some peaking may occur in the frequency
domain (Figure 3). To drive larger capacitance loads or
to reduce ringing, add an isolation resistor between the
amplifier’s output and the load (Figure 4).
The value of RISO depends on the circuit’s gain and the
capacitive load (Figure 5). Figure 6 shows the
MAX4104/MAX4105/MAX4304/MAX4305 frequency
response with the isolation resistor and a capacitive
load. With higher capacitive values, bandwidth is domi-
nated by the RC network formed by RISO and CL; the
bandwidth of the amplifier itself is much higher. Also
note that the isolation resistor forms a divider that
decreases the voltage delivered to the load.
Maxim’s High-Speed Evaluation Boards
The MAX4104 evaluation kit manual shows a suggest-
ed layout for Maxim’s high-speed, single-amplifier eval-
uation boards. This board was developed using the
techniques described previously (see Layout and
Power-Supply Bypassing section). The smallest avail-
able surface-mount resistors were used for the feed-
back and back-termination resistors to minimize the
______________________________________________________________________________________ 11
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11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX4305.PDF ] | |
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