參數資料
型號: AD9146BCPZRL
廠商: Analog Devices Inc
文件頁數: 37/56頁
文件大?。?/td> 0K
描述: IC DAC 16BIT SRL DUAL 48LFCSP
標準包裝: 2,500
系列: TxDAC+®
設置時間: 20ns
位數: 16
數據接口: 串行
轉換器數目: 2
電壓電源: 模擬和數字
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 48-WFQFN 裸露焊盤,CSP
供應商設備封裝: 48-LFCSP-WQ(7x7)
包裝: 帶卷 (TR)
輸出數目和類型: 2 電流,單極
采樣率(每秒): 1.23G
AD9146
Data Sheet
Rev. A | Page 42 of 56
REDUCING LO LEAKAGE AND UNWANTED
SIDEBANDS
Analog quadrature modulators can introduce unwanted
signals at the LO frequency due to dc offset voltages in the
I and Q baseband inputs, as well as feedthrough paths from
the LO input to the output. The LO feedthrough can be nulled
by applying the correct dc offset voltages at the DAC output.
This can be done using the auxiliary DACs (Register 0x42,
Register 0x43, Register 0x46, and Register 0x47) or by using
the digital dc offset adjustments (Register 0x3C through
Register 0x3F).
The advantage of using the auxiliary DACs is that none of
the main DAC dynamic range is used to perform the dc offset
adjustment. The disadvantage is that the common-mode level
of the output signal changes as a function of the auxiliary DAC
current. The opposite is true when the digital offset adjustment
is used.
Good sideband suppression requires both gain and phase
matching of the I and Q signals. The I/Q phase adjust registers
(Register 0x38 through Register 0x3B) and the DAC FS adjust
registers (Register 0x40 and Register 0x44) can be used to calibrate
the I and Q transmit paths to optimize sideband suppression.
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相關代理商/技術參數
參數描述
AD9146-EBZ 制造商:Analog Devices 功能描述:16 BIT DUAL SIGNAL PROC DAC EB - Boxed Product (Development Kits)
AD9146-M5375-EBZ 功能描述:BOARD EVAL FOR AD9146 DAC RoHS:是 類別:編程器,開發(fā)系統(tǒng) >> 評估板 - 數模轉換器 (DAC) 系列:TxDAC+® 產品培訓模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標準包裝:1 系列:- DAC 的數量:4 位數:12 采樣率(每秒):- 數據接口:串行,SPI? 設置時間:3µs DAC 型:電流/電壓 工作溫度:-40°C ~ 85°C 已供物品:板 已用 IC / 零件:MAX5581
AD9148 制造商:AD 制造商全稱:Analog Devices 功能描述:Quad 16-Bit,1 GSPS, TxDAC+ Digital-to-Analog Converter
AD9148ARUZ 制造商:Analog Devices 功能描述:- Rail/Tube
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