- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10979 > AD9957BSVZ (Analog Devices Inc)IC DDS 1GSPS 14BIT IQ 100TQFP PDF資料下載
參數(shù)資料
| 型號： | AD9957BSVZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 33/64頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DDS 1GSPS 14BIT IQ 100TQFP |
| 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 |
| 標準包裝： | 1 |
| 分辨率（位）： | 14 b |
| 主 fclk： | 1GHz |
| 調(diào)節(jié)字寬（位）： | 32 b |
| 電源電壓： | 1.8V, 3.3V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 100-TQFP 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 100-TQFP-EP（14x14） |
| 包裝： | 托盤 |
| 產(chǎn)品目錄頁面： | 552 (CN2011-ZH PDF) |
| 配用： | AD9957/PCBZ-ND - BOARD EVAL AD9957 QUADRATURE MOD |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁當前第33頁第34頁第35頁第36頁第37頁第38頁第39頁第40頁第41頁第42頁第43頁第44頁第45頁第46頁第47頁第48頁第49頁第50頁第51頁第52頁第53頁第54頁第55頁第56頁第57頁第58頁第59頁第60頁第61頁第62頁第63頁第64頁
Data Sheet
AD9957
Rev. C | Page 39 of 64
POWER-DOWN CONTROL
The AD9957 offers the ability to independently power down four
specific sections of the device. Power-down functionality applies
to the digital core, DAC, auxiliary DAC, and REFCLK input.
A power-down of the digital core disables the ability to update
the serial I/O port. However, the digital power-down bit can
still be cleared via the serial port to prevent the possibility of a
nonrecoverable state.
Software power-down is controlled through four independent
power-down bits in CFR1. Software control requires forcing the
EXT_PWR_DWN pin to a Logic 0 state. In this case, setting the
desired power-down bits (via the serial I/O port) powers down
the associated functional block; clearing the bits restores the
function.
Alternatively, all four functions can be simultaneously powered
down via external hardware control through the EXT_PWR_DWN
pin. Forcing this pin to Logic 1 powers down all four circuit
blocks, regardless of the state of the power-down bits. That is,
the independent power-down bits in CFR1 are ignored and
overridden when EXT_PWR_DWN is Logic 1.
Based on the state of the external power-down control bit, the
EXT_PWR_DWN pin produces either a full power-down or a
fast recovery power-down. The fast recovery power-down mode
maintains power to the DAC bias circuitry and the PLL, VCO,
and input section of the REFCLK circuitry. Although the fast
recovery power-down does not conserve as much power as the
full power-down, it allows the device to very quickly awaken
from the power-down state.
GENERAL-PURPOSE I/O (GPIO) PORT
The GPIO function is only available when the AD9957 is pro-
grammed for QDUC mode and the Blackfin interface mode is
active. Because the Blackfin serial interface uses only two of
the 18 parallel data port pins (D<5:4>), the remaining 16 pins
(D<17:6> and D<3:0>) are available as a GPIO port.
Each of these 16 pins is assigned a unique bit in both the 16-bit
GPIO configuration register and the 16-bit GPIO data register.
The status of each bit in the GPIO configuration register assigns
the associated pin as either a GPIO input or output (0 = input,
1 = output) based on the data listed in Table 11.
When a GPIO pin is programmed as an output, the logic state
written to the associated bit of the GPIO data register (via the
serial I/O port) appears at the GPIO pin. When a GPIO pin is
programmed as an input, the logic state of the GPIO pin can be
read (via the serial I/O port) in the associated bit position in the
GPIO data register. Note that the GPIO data register does not
require an I/O update.
Table 11. GPIO Pins vs. Configuration and Data Register Bits
Pin Label
Configuration Bit
Data Bit
D17
15
D16
14
D15
13
D14
12
D13
11
D12
10
D11
9
D10
8
D9
7
D8
6
D7
5
D6
4
D3
3
D2
2
D1
1
D0
0
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD9956YCPZ | IC SYNTHESIZER 1.8V 48LFCSP |
| S9S08DZ60F1MLH | MCU 60K FLASH MASK AUTO 64-LQFP |
| AD9952YSVZ | IC DDS 14BIT DAC 1.8V 48-TQFP |
| MC9S08DZ96MLF | MCU 8BIT 96K FLASH 48-LQFP |
| AD5933YRSZ | IC NTWK ANALYZER 12B 1MSP 16SSOP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)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(shù)字合成 (DDS) 系列:- 產(chǎn)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(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) |
| 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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。