MAX2634EVKIT+ Maxim Integrated Products, MAX2634EVKIT+ Datasheet - Page 6

• Manufacturer Part Number: MAX2634EVKIT+
• Description: RF Modules & Development Tools KIT EVAL FOR MAX2634 AUTO AMP
• Manufacturer: Maxim Integrated Products

Specifications of MAX2634EVKIT+

• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

315MHz/433MHz Low-Noise
Amplifier for Automotive RKE
The value of the coupling capacitor affects input IP3
and turn-on time. A larger coupling capacitor results in
higher input IP3 at the expense of longer turn-on time.
See Table 3 for the typical amount of trade-off.
The MAX2634 integrates the output matching network
and DC-block, eliminating the need for external match-
ing components while providing a broadband match.
See the Functional Diagram/Typical Operating Circuit
for component values.
The MAX2634 features a shutdown pin to disable the
entire chip. Apply a logic-high to the SHDN pin to place
the part in the active mode, and a logic-low to place the
part in the shutdown mode.
Bypassing the V
gain/linearity performance. See the Functional
Diagram/Typical Operating Circuit for bypassing
capacitor values.
A properly designed PCB is essential to any RF/
microwave circuit. Use controlled-impedance lines on
all high-frequency inputs and outputs. Bypass with
decoupling capacitors located close to the device’s
V
additional decoupling capacitors. These additional
capacitors can be located farther away from the device
package. Proper grounding of the GND pins is essen-
tial. If the PCB uses a topside RF ground, connect it
directly to all GND pins. For a board where the ground
plane is not on the component layer, the best technique
is to connect the GND pins to the board with a plated
through-hole located close to the package.
6
CC
_______________________________________________________________________________________
pin. For long V
CC
RF Input Coupling Capacitor
CC
Integrated Output Matching
line is necessary for optimum
Input IP3 vs. Enable Time
lines, it may be necessary to add
Power-Supply Bypassing
Network and DC-Block
Layout Information
Shutdown
Table 2. MAX2634 Typical Noise
Parameters
(V
Table 3. RF Input Coupling Capacitor
Input IP3 vs. Enable Time
PROCESS: SiGe BiCMOS
FREQUENCY
CC
INPUT DC-BLOCKING
(MHz)
= +3.0V, T
308
315
418
434
CAPACITOR,
C1 (nF)
1000
100
3.3
22
1
A
= +25°C.)
FMIN
(dB)
0.64
0.65
0.78
0.80
|Γ
0.50
0.49
0.44
0.44
OPT
ENABLE
Chip Information
TIME
6000
(µs)
130
600
|
20
6
ANGLE
|Γ
27.0
27.7
37.4
38.9
OPT
|
INPUT IP3 AT
315MHz
(dBm)
-19
-14
-12
-11
-11
R
9.78
9.78
9.87
9.88
N
(Ω)