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参数资料
| 型号： | MAX19794ETX+T |
| 厂商： | Maxim Integrated |
| 文件页数： | 5/25页 |
| 文件大小： | 5676K |
| 描述： | ATTENUATR 46DB 50OHM 4GHZ 36TQFN |
| 标准包装： | 2,500 |
| 衰减值： | 0dB ~ 46.4dB |
| 频率范围： | 500MHz ~ 4GHz |
| 阻抗： | 50 欧姆 |
| 封装/外壳： | 36-WFQFN 裸露焊盘 |
5
MAX19794
10MHz to 500MHz Dual Analog Voltage Variable
Attenuator with On-Chip 10-Bit SPI-Controlled DAC
5V AC ELECTRICAL CHARACTERISTICS
(Typical Application Circuit, one attenuator, V
CC
= 4.75V to 5.25V, RF ports are driven from 50I sources and loaded into 50I, input
P
RF
= 0dBm, f
RF
= 10MHz to 500MHz, V
CTRL
= 1V to 4V, V
DAC_LOGIC
= 0V, RDBK_EN (D9, REG3) = Logic 0, T
C
= -40NC to +100NC.
Typical values are for T
C
= +25NC, V
CC
= 5.0V, input P
RF
= 0dBm, f
RF
= 55MHz, V
CTRL
= 1.0V, V
DAC_LOGIC
= 0V, RDBK_EN (D9,
REG3) = Logic 0, unless otherwise noted.) (Notes 5, 7)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNIT
Insertion Loss
IL
One attenuator
1.5
dB
Two attenuators
3.0
5.0
dB
Loss Variation Over Temperature
T
C
= -40NC to +100NC
0.29
dB
Input P
1dB
IP
1dB
21.8
dBm
Minimum Input Second-Order
Intercept Point Over Full
Attenuation Range (Note 8)
IIP2
One attenuator
f
RF1
+ f
RF2
term,
f
RF1
- f
RF2
= 1MHz
V
CTRL
= 1.0V to 4.0V
P
RF
= 0dBm/tone applied to attenuator input
48.1
dBm
Two attenuators
f
RF1
+f
RF2
term,
f
RF1
- f
RF2
= 1MHz
V
CTRL
= 1.0V to 4.0V
P
RF
= 0dBm/tone applied to attenuator input
46.5
Minimum Input Third-Order
Intercept Point
Over Full Attenuation Range
(Note 8)
IIP3
One attenuator
V
CTRL
from 1.0V to 4.0V
f
RF1
- f
RF2
= 1MHz
P
RF
= 0dBm/tone applied to attenuator input
34.4
dBm
Two attenuators
V
CTRL
from 1.0V to 4.0V
f
RF1
- f
RF2
= 1MHz
P
RF
= 0dBm/tone applied to attenuator input
32.3
Second Harmonic
63
dBc
Third Harmonic
97
dBc
Attenuation Control Range
One attenuator, V
CTRL
= 1.0V to 4.0V,
f
RF
= 55MHz
22.4
dB
Two attenuators V
CTRL
= 1.0V to 4.0V,
f
RF
= 55MHz
38.5
44.7
dB
Average Attenuation-Control
Slope
V
CTRL
= 1.5V to 3.1V
8.0
dB/V
V
CTRL
= 1.5V to 3.5V
9.4
Maximum Attenuation-Control
Slope
V
CTRL
= 1.5V to 3.5V
30
dB/V
Attenuation Flatness over
any 125MHz band
V
CTRL
= 1.0V to 3.1V,
f
RF
= 10MHz to 250MHz
0.15
dB
V
CTRL
= 1.0V to 3.1V,
f
RF
= 250MHz to 500MHz
0.2
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX1979ETM | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1979ETM+ | 功能描述:电压模式 PWM 控制器 Integrated Temp Ctlr for Peltier Modules RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1979ETM+T | 功能描述:电压模式 PWM 控制器 Integrated Temp Ctlr for Peltier Modules RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX1979ETM-T | 功能描述:电压模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 输出端数量:1 拓扑结构:Buck 输出电压:34 V 输出电流: 开关频率: 工作电源电压:4.5 V to 5.5 V 电源电流:600 uA 最大工作温度:+ 125 C 最小工作温度:- 40 C 封装 / 箱体:WSON-8 封装:Reel |
| MAX197ACAI | 功能描述:模数转换器 - ADC Integrated Circuits (ICs) RoHS:否 制造商:Texas Instruments 通道数量:2 结构:Sigma-Delta 转换速率:125 SPs to 8 KSPs 分辨率:24 bit 输入类型:Differential 信噪比:107 dB 接口类型:SPI 工作电源电压:1.7 V to 3.6 V, 2.7 V to 5.25 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:VQFN-32 |
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