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| 型號： | AD9911/PCBZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 16/44頁 |
| 文件大?。?/td> | 0K |
| 描述： | BOARD EVAL FOR AD9911 |
| 產(chǎn)品培訓(xùn)模塊： | Direct Digital Synthesis Tutorial Series (1 of 7): Introduction Direct Digital Synthesizer Tutorial Series (7 of 7): DDS in Action Direct Digital Synthesis Tutorial Series (3 of 7): Angle to Amplitude Converter Direct Digital Synthesis Tutorial Series (6 of 7): SINC Envelope Correction Direct Digital Synthesis Tutorial Series (4 of 7): Digital-to-Analog Converter Direct Digital Synthesis Tutorial Series (2 of 7): The Accumulator |
| 設(shè)計(jì)資源： | AD9911 Eval Brd Schematics AD9911 Eval Brd BOM AD9911 Eval Brd Gerber Files |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 系列： | AgileRF™ |
| 主要目的： | 計(jì)時(shí)，直接數(shù)字合成（DDS） |
| 已用 IC / 零件： | AD9911 |
| 已供物品： | 板 |
| 相關(guān)產(chǎn)品： | AD9911BCPZ-REEL7-ND - IC DDS 500MSPS DAC 10BIT 56LFCSP AD9911BCPZ-ND - IC DDS 500MSPS DAC 10BIT 56LFCSP |
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AD9911
Rev. 0 | Page 23 of 44
Table 13. 2-Level Modulation—RU/RD
Profile Pin Config. Bits
FR1<14:12>
P0
P1
P2
P3
0
N/A
CH1
N/A
CH1
RU/RD
0
1
CH1
N/A
CH1
RU/RD
N/A
8-Level Modulation Using a Profile Pin for RU/RD
When the RU/RD bits = 10, Profile Pin P3 is available for
RU/RD. Note that only a modulation level of eight is available
when the RU/RD bits = 10. See Table 14 for available pin
assignments.
Table 14. 8-Level Modulation—RU/RD
Profile Pin Config. Bits FR1
<14:12>
P0
P1
P2
P3
x
0
1
CH1
RU/RD
SHIFT KEYING MODULATION USING SDIO PINS
FOR RU/RD
For RU/RD bits = 11, SDIO Pin 1, Pin 2, and Pin 3 are available
for RU/RD. In this mode, modulation levels of 2, 4, and 16 are
available. Note that the I/O port can only be used in 1-bit serial
mode.
Table 15. 2-Level Modulation Using SDIO Pins for RU/RD
Profile Pin Config. Bits
FR1 <14:12>
P0
P1
P2
P3
x
N/A
CH1
N/A
In this case, the SDIO pins can be used for the RU/RD function,
as described in Table 16.
Table 16. SDIO Pins
1
2
3
Description
0
1
0
Triggers the ramp-up function for CH1
0
1
Triggers the ramp-down function for CH1
4-Level Modulation Using SDIO Pins for RU/RD
For RU/RD = 11 (SDIO Pin 1 and Pin 2 are available for
RU/RD), the modulation level is set to four. See Table 17 for pin
assignments, including SDIO pin assignments.
Table 17.
Profile Pin
Config. Bits
(FR1<14:12>)
P0
P1
P2
P3
SDIO_1
SDIO_2
SDIO_3
0
N/A
CH1
N/A
CH1
RU/RD
N/A
0
1
CH1
N/A
CH1
RU/RD
N/A
For the configuration shown in Table 17, the profile register is
chosen based on the 2-bit value presented to <P0:P1> or
<P2:P3>. For example, if PPC = 011, <P0:P1> = 11, then the
contents of Profile Register 3 (Register 0x0C) are presented to
CH1 output. SDIO Pin 1 and Pin 2 provide the RU/RD function.
16-Level Modulation Using SDIO Pins for RU/RD
RU/RD = 11 (SDIO Pin 1 available for RU/RD) and the level is
set to 16. See the pin assignment shown in Table 18.
Table 18.
Profile Pin
Config. Bits
(FR1<14:12>)
P0
P1
P2
P3
SDIO_1
SDIO_2
SDIO_3
x
0
1
CH1
RU/RD
N/A
For the configuration shown in Table 18, the profile register is
chosen based on the 4-bit value presented to <P0:P3>. For
example, if PPC = x01 and <P0:P3> = 1101, then the contents of
Profile Register 13 (Register 0x16) are presented to CH1 output.
The SDIO_1 pin provides the RU/RD function.
LINEAR SWEEP (SHAPED) MODULATION MODE
Linear sweep enables the user to sweep frequency, phase, or
amplitude from a starting point (S0) to an endpoint (E0). The
purpose of linear sweep mode is to provide better bandwidth
containment compared to direct modulation mode by enabling
more gradual, user-defined changes between S0 and E0. Note
that SYNC_CLK must be enabled when using Linear Sweep
while the auxiliary DDS cores must be disabled. Digital power
down (CSR bit <7>) of the auxiliary channels is recommended.
Figure 41 depicts the linear sweep block diagram.
In linear sweep mode, S0 is loaded into Profile Register 0
(Profile 0 is represented by Register 0x04, Register 0x05, or
Register 0x06, depending on the parameter being swept) and E0
is always loaded into Profile Register 1 (Register 0x0A). If E0 is
configured for frequency sweep, the resolution is 32-bits. For
phase sweep, the resolution is 14 bits and for amplitude sweep,
the resolution is 10 bits. When sweeping phase or amplitude,
the word value must be MSB-aligned in Profile Register 1;
unused bits are ignored. Profile Pin1 triggers and controls the
direction (up/down) of the linear sweep for frequency, phase, or
amplitude.
The AD9911 can be programmed to ramp up or ramp down the
output amplitude (using the 10-bit output scalar) before and
after a linear sweep. If the RU/RD feature is desired, profile pins
or SDIO_1:3 pins can be configured to control the RU/RD
operation. For further details, refer to the Output Amplitude
Control section. To enable linear sweep mode, AFP bits (CFR
<23:22>), modulation level bits (FR1 <9:8>), and the linear
sweep enable bit (CFR <14>) must be programmed. The AFP
bits determine the type of linear sweep to be performed (see
Table 19). The modulation level bits must be set to 00 (2-level).
Table 19.
AFP
CFR <23:22>
Linear Sweep Enable
CFR <14>
Description
0
1
N/A
0
1
Amplitude sweep
1
0
1
Frequency sweep
1
Phase sweep
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| AD9912 | 制造商:AD 制造商全稱:Analog Devices 功能描述:1 GSPS Direct Digital Synthesizer w/ 14-bit DAC |
| AD9912/PCBZ | 制造商:Analog Devices 功能描述:Evaluation Kit For 1 GSPS Direct Digital Synthesizer W/ 14-Bit DAC 制造商:Analog Devices 功能描述:EVAL KIT FOR 1 GSPS DIRECT DGTL SYNTHESIZER W/ 14BIT DAC - Bulk 制造商:Analog Devices 功能描述:EVALUATION BOARD AD9912 1GSPS DDS |
| AD9912A/PCBZ | 功能描述:BOARD EVALUATION FOR AD9912 RoHS:是 類別:編程器，開發(fā)系統(tǒng) >> 評估演示板和套件 系列:- 標(biāo)準(zhǔn)包裝:1 系列:PCI Express® (PCIe) 主要目的:接口，收發(fā)器，PCI Express 嵌入式:- 已用 IC / 零件:DS80PCI800 主要屬性:- 次要屬性:- 已供物品:板 |
| AD9912ABCPZ | 功能描述:IC DDS 1GSPS DAC 14BIT 64LFCSP 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) |
| AD9912ABCPZ-REEL7 | 功能描述:IC DDS 1GSPS DAC 14BIT 64LFCSP 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) |
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