MAX2057ETX(2010) 查看數據表（PDF） - Maxim Integrated
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产品描述 (功能)
比赛名单
MAX2057ETX
(Rev.:2010)
(Rev.:2010)
Maxim Integrated
MAX2057ETX Datasheet PDF : 13 Pages
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1300MHz to 2700MHz Variable-Gain
Amplifier with Analog Gain Control
RF INPUT*
C3
VCC
C4
36 35 34 33 32 31 30 29 28
C5
GND 1
OUT_A 2
GND 3
VCC
GND 4
5
VCC
C2
GND 6
7
C1
GND
8
IN_A
9
GND
EP
MAX2057
ATTENUATION
CONTROL
CIRCUITRY
10 11 12 13 14 15 16 17 18
27 GND
26 AMP_IN
25
VCC C6
24 GND
VCC
C13
23
GND
22
GND
21
GND
20
OUT
19
GND
C7
0.06in LONG FR4 50Ω
TRANSMISSION LINE
RF
OUTPUT
C17
+
VGC -
C10
VCC
R1
VCC R2
C15
C9
C8
C14
*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.
Figure 1. Typical Application Circuit
Detailed Description
The MAX2057 general-purpose, high-performance VGA
with analog gain control is designed to interface with
50Ω systems operating in the 1300MHz to 2700MHz
frequency range.
The MAX2057 integrates two attenuators to provide
21dB or 42dB of precision analog gain control, as well
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.
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