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參數(shù)資料
| 型號(hào)： | AD9830AST |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 數(shù)字信號(hào)處理外設(shè) |
| 英文描述： | CMOS Complete DDS |
| 中文描述： | 16-BIT, DSP-NUM CONTROLLED OSCILLATOR, PQFP48 |
| 封裝： | TQFP-48 |
| 文件頁數(shù)： | 12/16頁 |
| 文件大小： | 218K |
| 代理商： | AD9830AST |
AD9830
REV. A
–12–
APPLIC AT IONS
T he AD9830 contains functions which make it suitable for
modulation applications. T he part can be used to perform
simple modulation such as FSK . More complex modulation
schemes such as GMSK and QPSK can also be implemented
using the AD9830. In a FSK application, the two frequency reg-
isters of the AD9830 are loaded with different values, one fre-
quency will represent the space frequency while the other will
represent the mark frequency. T he digital data stream is fed to
the FSELECT pin which will cause the AD9830 to modulate
the carrier frequency between the two values.
T he AD9830 has four phase registers which enable the part to
perform PSK . With phase shift keying, the carrier frequency is
phase shifted, the phase being altered by an amount which is
related to the bit stream being input to the modulator. T he
presence of four shift registers eases the interaction needed
between the DSP and the AD9830.
T he frequency and phase registers can be written to continuously,
if required. T he maximum update rate equals the frequency of
the MCLK . However, if a selected register is loaded with a new
word, there will be a delay of 6 MCLK cycles before the analog
output will change accordingly.
T he AD9830 is also suitable for signal generator applications.
With its low current consumption, the part is suitable for
mobile applications in which it can be used as a local oscillator.
Figure 24 shows the interface between the AD9830 and AD6459
which is a down converter used on the receive side of mobile
phones or basestations.
BANDPASS
FILTER
IFIP
IFIM
MXOP
MXOM
MIDPOINT
BIAS
GENERATOR
BIAS
CIRCUIT
LOIP
FILTER
51
51
10 BITS
R
SET
1k
AD9830
AD6459
PLL
0
°
90
°
GAIN TC
COMPENSATION
IRxP
IRxN
FREF
FLTR
QRxP
QRxN
GAIN
GREF
RFHI
RFLO
VPS1
VPS2
PRUP
COM1
COM2
0.1μF
ANTENNA
Figure 24. AD9830 and AD6459 Receiver Circuit
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD9830AST-REEL | 制造商:Analog Devices 功能描述:Direct Digital Synthesizer 50MHz 1-DAC 10-Bit Parallel 48-Pin LQFP T/R 制造商:Rochester Electronics LLC 功能描述:50 MHZ 10-BIT DDS DAC I.C. - Tape and Reel |
| AD9830ASTZ | 功能描述:IC DDS 10BIT 50MHZ CMOS 48-TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD9830ASTZ-REEL | 功能描述:IC DDS 10BIT 50MHZ CMOS 48TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數(shù)字合成 (DDS) 系列:- 產(chǎn)品變化通告:Product Discontinuance 27/Oct/2011 標(biāo)準(zhǔn)包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調(diào)節(jié)字寬（位）:32 b 電源電壓:2.97 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD9831 | 制造商:AD 制造商全稱:Analog Devices 功能描述:CMOS Complete DDS |
| AD9831AST | 制造商:Rochester Electronics LLC 功能描述:25 MHZ +5V/+3V, 10-BIT DDS DAC I.C. - Bulk 制造商:Analog Devices 功能描述:10BIT DAC DDS 25 MHZ +5V/+3V 9831 |
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