MAX2057 Maxim Integrated Products, MAX2057 Datasheet - Page 10

• Manufacturer Part Number: MAX2057
• Description: 1700MHz to 2500MHz Variable-Gain Amplifier
• Manufacturer: Maxim Integrated Products

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The MAX2057 general-purpose, high-performance VGA
with analog gain control is designed to interface with
50Ω systems operating in the 1700MHz to 2500MHz
frequency range.
The MAX2057 integrates two attenuators to provide
21dB or 42dB of precision analog gain control, as well
1700MHz to 2500MHz Variable-Gain
Amplifier with Analog Gain Control
Figure 1. Typical Application Circuit
10
RF INPUT*
______________________________________________________________________________________
*NOTE: CONNECT THE INPUT ACCORDING TO THE SOLID BOLD LINE IF ONE ATTENUATOR
IS USED. CONNECT THE INPUT ACCORDING TO THE BROKEN LINE IF TWO ATTENUATORS ARE USED.
V
C1
CC
C2
V
GC
OUT_A
GND
GND
IN_A
GND
GND
GND
GND
V
+
-
CC
Detailed Description
C3
1
2
3
4
5
6
7
8
9
C10
10
36
C15
11
35
V
CC
12
MAX2057
34
ATTENUATION
CIRCUITRY
CONTROL
C9
13
33
V
CC
14
32
R1
15
31
C8
EP
C4
16
30
as a two-stage amplifier that has been optimized to
provide high gain, high IP3, low noise figure, and low
power consumption. The bias current of each amplifier
stage can be adjusted by individual external resistors
to further reduce power consumption for applications
that do not require high linearity.
17
C14
29
V
CC
18
28
R2
27
26
25
24
23
22
21
20
19
GND
GND
GND
GND
GND
GND
OUT
AMP_IN
V
CC
C6
C7
0.06in LONG FR4 50Ω
TRANSMISSION LINE
C5
V
CC
C13
C17
RF
OUTPUT