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參數(shù)資料
| 型號： | MAX19794ETX+ |
| 廠商： | Maxim Integrated |
| 文件頁數(shù)： | 21/25頁 |
| 文件大?。?/td> | 5676K |
| 描述： | ATTENUATR 46DB 50OHM 4GHZ 36TQFN |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 衰減值： | 0dB ~ 46.4dB |
| 頻率范圍： | 500MHz ~ 4GHz |
| 阻抗： | 50 歐姆 |
| 封裝/外殼： | 36-WFQFN 裸露焊盤 |
21
MAX19794
10MHz to 500MHz Dual Analog Voltage Variable
Attenuator with On-Chip 10-Bit SPI-Controlled DAC
Figure 1. Register Configuration Diagram
Table 4. Attenuator Control Mode Logic State
Table 5. Step Mode Logic State (MODE = 1)
Table 6. REF_SEL Logic State
*Continued up or down stepping results in saturation (no code wrapping).
MODE
(PIN 17)
ATTENUATOR
0
SPI Control Mode (DAC code is located in register 0)
1
Step Control Mode using UP and DWN pins. The step-up code is located in register 1 and step-down code in
register 2).
UP
DWN
ATTENUATOR
Logic 0
Logic 0
Reset DAC for minimum attenuation state (DAC code = 0000000000).
Logic 0 Pulse
Logic 1
Increase DAC code* by amount located in register 1.
UP pulsed from high to low to high (Figure 3).
Logic 1
Logic 0 Pulse
Decrease DAC code* by amount located in register 2.
DWN pulsed from high to low to high (Figure 3).
REF_SEL
DAC REFERENCE
0
Uses on-chip DAC reference.
1
User provides off-chip DAC reference voltage on REF_IN (pin 14).
m x REGISTER 1 - n x REGISTER 2
m = NUMBER OF UP PULSES
n = NUMBER OF DOWN PULSES
RESET TO ALL ZEROS WHEN UP/DOWN
PULSED TOGETHER
OR
10-BIT DAC
REGISTER
REGISTER 3
REGISTER 2
REGISTER 1
REGISTER 0
m
n
DOWN
UP
MODE
DIN DOUT
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX19794ETX+ | 功能描述:衰減器 -IC 10MHz to 500MHz Attenuator RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰減:18 dB 容差: 阻抗: 功率額定值:30 dBm 安裝風(fēng)格:SMD/SMT 工作溫度范圍:- 40 C to + 85 C |
| MAX19794ETX+T | 功能描述:衰減器 -IC 10MHz to 500MHz Attenuator RoHS:否 制造商:Skyworks Solutions, Inc. 最大衰減:18 dB 容差: 阻抗: 功率額定值:30 dBm 安裝風(fēng)格:SMD/SMT 工作溫度范圍:- 40 C to + 85 C |
| MAX1979ETM | 功能描述:電壓模式 PWM 控制器 RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX1979ETM+ | 功能描述:電壓模式 PWM 控制器 Integrated Temp Ctlr for Peltier Modules RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
| MAX1979ETM+T | 功能描述:電壓模式 PWM 控制器 Integrated Temp Ctlr for Peltier Modules RoHS:否 制造商:Texas Instruments 輸出端數(shù)量:1 拓?fù)浣Y(jié)構(gòu):Buck 輸出電壓:34 V 輸出電流: 開關(guān)頻率: 工作電源電壓:4.5 V to 5.5 V 電源電流:600 uA 最大工作溫度:+ 125 C 最小工作溫度:- 40 C 封裝 / 箱體:WSON-8 封裝:Reel |
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