250MHz to 4000MHz Dual,
Analog Voltage Variable Attenuator
10
Typical Application Circuit
Exposed Pad RF and Thermal
Considerations
The exposed pad (EP) of the devices 36-pin thin QFN
package provides a low thermal-resistance path to
the die. It is important that the PCB on which the IC is
mounted be designed to conduct heat from this contact.
In addition, provide the EP with a low-inductance RF
ground path for the device.
The EP MuST be soldered to a ground plane on the
PCB, either directly or through an array of plated via
holes. Soldering the pad to ground is also critical
for efficient heat transfer. Use a solid ground plane
wherever possible.
C1
RFA
CTRL
V
CC
R4
R3
IN_B
GND
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
ATTEN_B
ATTEN_A
EP
30
31
32
33
34
35
36
OUT_B
1
ATTENUATION-
CONTROL
CIRCUITRY
*SCHEMATIC SHOWS CONFIGURATION FOR TWO CASCADED ATTENUATORS. TO USE ATTENUATOR A ONLY MOVE C3
TO CONNECT OUT_A TO RFB. TO USE ATTENUATOR B ONLY MOVE C3 TO CONNECT RFB TO IN_B.
R1
C2
V
CC
CTRL
C9
C8
C6
C7
V
CC
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
GND
RFB*
C3
V
CC
C4
R2
C5
RFOUT
V
CC
MAX19790
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MAX19790ETX+TW
功能描述:有源衰减器 250MHz to 4000MHz Dual Analog Voltage Variable Attenuator RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度:
MAX19790ETX+W
功能描述:有源衰减器 Dual SiGe High-Linearity 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度:
MAX19790EVKIT+
功能描述:有源衰减器 MAX19790 EVKIT RoHS:否 制造商:TriQuint Semiconductor 通道数量: 最大频率: 阻抗: 最大 VSWR: 位数: 最大工作温度: 最小工作温度:
MAX19791ETX+
制造商:Maxim Integrated Products 功能描述:50MHZ TO 4000MHZ DUAL ANALOG VOLTAGE VARIABLE ATTENUATOR WIT - Rail/Tube
MAX19791ETX+T
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MAX19792ETX+
功能描述:衰减器 -IC 500MHz to 3000MHz Attenuator RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰减:18 dB 容差: 阻抗: 功率额定值:30 dBm 安装风格:SMD/SMT 工作温度范围:- 40 C to + 85 C
MAX19792ETX+T
功能描述:衰减器 -IC 500MHz to 3000MHz Attenuator RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰减:18 dB 容差: 阻抗: 功率额定值:30 dBm 安装风格:SMD/SMT 工作温度范围:- 40 C to + 85 C
MAX19793ETX+
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