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參數資料
| 型號： | AD9957BSVZ |
| 廠商： | ANALOG DEVICES INC |
| 元件分類： | 通信及網絡 |
| 英文描述： | 1 GSPS Quadrature Digital Upconverter with 18-Bit IQ Data Path and 14-Bit DAC |
| 中文描述： | SPECIALTY TELECOM CIRCUIT, PQFP100 |
| 封裝： | ROHS COMPLIANT, MS-026AED-HD, TQFP-100 |
| 文件頁數： | 17/60頁 |
| 文件大小： | 840K |
| 代理商： | AD9957BSVZ |
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AD9957
BLACKFIN INTERFACE (BFI)
A subset of the QDUC mode is the Blackfin interface (BFI)
mode, shown in Figure 27; grayed items are inactive. In this
mode, a separate I and Q serial bit stream is applied to the
baseband data port instead of parallel data-words. The two
serial inputs provide for 16-bit I- and Q-words (unlike the 18-
bit words in normal QDUC mode). The serial bit streams are
delivered to the Blackfin interface. The Blackfin interface
converts the 16-bit serial data into 16-bit parallel data to
propagate down the signal processing chain.
Rev. 0 | Page 17 of 60
The Blackfin interface includes an additional pair of half-band
filters in both I and Q signal paths
(not shown explicitly in the
diagram). The two half-band filters increase the interpolation of
the baseband data by a factor of four, relative to the normal
QDUC mode.
The synchronization of the serial data occurs through the
PDCLK signal. In BFI mode, the PDCLK signal is effectively
the bit clock for the serial data.
0
PDCLK
I/Q IN
E
DAC_RSET
IOUT
IOUT
TxENABLE
DAC GAIN
θ
cos (
ω
t+
θ
)
I
S
F
CLOCK
F
P
8
SYSCLK
PLL
÷2
C
REF_CLK
REF_CLK
REFCLK_OUT
XTAL_SEL
AD9957
ω
sin (
ω
t+
θ
)
S
S
P
P
M
2
2
DDS
AUX
DAC
8-BIT
POWER
DOWN
CONTROL
2
D
I
Q
IS
QS
B
18
18
16
16
I
C
I
C
OSK
INTERNAL CLOCK TIMING AND CONTROL
DAC
14-BIT
C
O
FTW
PW
PARALLEL DATA
TIMING AND CONTROL
2
R
RAM
P
C
I
S
S
SERIAL I/O
PORT
I
PROGRAMMING
REGISTERS
3
I Q
IS QS
H
F
C
(
H
F
C
(
OUTPUT
SCALE
FACTOR
Figure 27. Quadrature Modulation Mode, Blackfin Interface
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相關代理商/技術參數 |
參數描述 |
|---|---|
| AD9957BSVZ-REEL | 功能描述:IC DDS 1GSPS 14BIT IQ 100TQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 直接數字合成 (DDS) 系列:- 產品變化通告:Product Discontinuance 27/Oct/2011 標準包裝:2,500 系列:- 分辨率（位）:10 b 主 fclk:25MHz 調節字寬（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） 供應商設備封裝:16-TSSOP 包裝:帶卷 (TR) |
| AD9957BSVZREEL13 | 制造商:AD 制造商全稱:Analog Devices 功能描述:1 GSPS Quadrature Digital Upconverter w/18-Bit IQ Data Path and 14-Bit DAC |
| AD9958 | 制造商:AD 制造商全稱:Analog Devices 功能描述:2-Channel 500 MSPS DDS with 10-Bit DACs |
| AD9958 PCB | 制造商:Analog Devices 功能描述:EVAL BOARD ((NS)) |
| AD9958/PCB | 制造商:Analog Devices 功能描述:Evaluation Board For 2-Channel 500 MSPS DDS With 10-Bit DACs 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:IC 10-BIT DAC DDS |
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