Datasheet

MAX4104/MAX4105/MAX4304/MAX4305
distance from the IC to these resistors, thus reducing
the capacitance associated with longer lead lengths.
SMA connectors were used for best high-frequency
performance. Because distances are extremely short,
performance is unaffected by the fact that inputs and
outputs do not match a 50Ω line. However, in applica-
tions that require lead lengths greater than 1/4 of the
wavelength of the highest frequency of interest,
constant-impedance traces should be used.
Fully assembled evaluation boards are available for the
MAX4104 in an 8-pin SO package.
740MHz, Low-Noise, Low-Distortion
Op Amps in SOT23-5
12 ______________________________________________________________________________________
MAX4104
MAX4105
MAX4304
MAX4305
R
G
IN-
IN+
R
ISO
OUT
R
F
C
L
R
L
0
10
5
20
15
25
30
0 10050 150 200 250
CAPACITIVE LOAD (pF)
OPTIMAL ISLOATION RESISTOR (Ω)
MAX4105/MAX4305
MAX4104/MAX4304
Figure 5. Optimal Isolation Resistor (R
ISO
) vs. Capacitive
Load
4
3
-6
100k 1M 10M 100M 1G
-4
-5
FREQUENCY (Hz)
GAIN (dB)
-2
-3
0
-1
2
1
C
L
= 47pF
MAX4104/MAX4304
R
ISO
= 15Ω
C
L
= 83pF
C
L
= 68pF
Figure 6. Frequency Responses vs. Capacitive Load with 15 Ω
Isolation Resistor
Figure 4. Using an Isolation Resistor (R
ISO
) for High Capacitive
Loads
Chip Information
TRANSISTOR COUNT: 44
SUBSTRATE CONNECTED TO V
EE
Ordering Information (continued)
* Future product—contact factory for availability.
PART
MAX4105ESA
-40°C to +85°C
TEMP. RANGE
PIN-
PACKAGE
8 SO
MAX4105EUK-T -40°C to +85°C 5 SOT23-5
MAX4304ESA
MAX4304EUK-T
MAX4305ESA*
-40°C to +85°C
-40°C to +85°C
-40°C to +85°C 8 SO
5 SOT23-5
8 SO
MAX4305EUK-T -40°C to +85°C 5 SOT23-5
SOT
TOP MARK
—
ACCP
—
ACCQ
—
ACCR
OUT
IN+
N.C.
V
EE
1
2
8
7
N.C.
V
CC
IN-
N.C.
MAX4304
MAX4305
MAX4104
MAX4105
SO
TOP VIEW
3
4
6
5
Pin Configurations (continued)