The LVPECL differential voltage (VOD
參數(shù)資料
型號: AD9516-0/PCBZ
廠商: Analog Devices Inc
文件頁數(shù): 43/80頁
文件大小: 0K
描述: IC CLOCK GEN 2.8GHZ VCO 64-LFCSP
設(shè)計(jì)資源: AD9516-0 BOM
AD9516 Eval Brd Schematic
AD9516 Gerber Files
標(biāo)準(zhǔn)包裝: 1
AD9516-0
Data Sheet
Rev. C | Page 48 of 80
LVPECL Outputs—OUT0 to OUT5
The LVPECL differential voltage (VOD) is selectable from ~400 mV
to ~960 mV (see Register 0x0F0[3:2] to Register 0x0F5[3:2]).
The LVPECL outputs have dedicated pins for power supply
(VS_LVPECL), allowing a separate power supply to be used.
VS_LVPECL can be from 2.5 V to 3.3 V.
The LVPECL output polarity can be set as noninverting or
inverting, which allows for the adjustment of the relative
polarity of outputs within an application without requiring a
board layout change. Each LVPECL output can be powered
down or powered up, as needed. Because of the architecture of
the LVPECL output stages, there is the possibility of electrical
overstress and breakdown under certain power-down conditions.
For this reason, the LVPECL outputs have several power-down
modes. This includes a safe power-down mode that continues
to protect the output devices while powered down, although it
consumes somewhat more power than a total power-down. If
the LVPECL output pins are terminated, it is best to select the
safe power-down mode. If the pins are not connected (unused),
it is acceptable to use the total power-down mode.
GND
3.3V
OUT
06419-
033
Figure 59. LVPECL Output, Simplified Equivalent Circuit
LVDS/CMOS Outputs—OUT6 to OUT9
OUT6 to OUT9 can be configured as either an LVDS
differential output or as a pair of CMOS single-ended outputs.
The LVDS outputs allow for selectable output current from
~1.75 mA to ~7 mA.
The LVDS output polarity can be set as noninverting or
inverting, which allows for the adjustment of the relative
polarity of outputs within an application without requiring a
board layout change. Each LVDS output can be powered down
if not needed to save power.
OUT6 to OUT9 can also be CMOS outputs. Each LVDS output
can be configured to be two CMOS outputs. This provides for
up to eight CMOS outputs: OUT6A, OUT6B, OUT7A, OUT7B,
OUT8A, OUT8B, OUT9A, and OUT9B. When an output is
configured as CMOS, CMOS Output A is automatically turned on.
CMOS Output B can be turned on or off independently. The
relative polarity of the CMOS outputs can also be selected for any
combination of inverting and noninverting (see Table 57 for
Register 0x140[7:5], Register 0x141[7:5], Register 0x142[7:5],
and Register 0x143[7:5]).
OUT
3.5mA
06419-
034
Figure 60. LVDS Output Simplified Equivalent Circuit with
3.5 mA Typical Current Source
Each LVDS/CMOS output can be powered down as needed to
save power. The CMOS output power-down is controlled by the
same bit that controls the LVDS power-down for that output.
This power-down control affects both CMOS Output A and
CMOS Output B. However, when CMOS Output A is powered up,
CMOS Output B can be powered on or off separately.
OUT1/
OUT1
VS
06419-
035
Figure 61. CMOS Equivalent Output Circuit
RESET MODES
The AD9516 has several ways to force the chip into a reset
condition that restores all registers to their default values and
makes these settings active.
Power-On Reset—Start-Up Conditions When VS Is
Applied
A power-on reset (POR) is issued when the VS power supply is
turned on. This initializes the chip to the power-on conditions
that are determined by the default register settings. These are
indicated in the Default Value (Hex) column of Table 52. At
power-on, the AD9516 also executes a SYNC operation, which
brings the outputs into phase alignment according to the default
settings.
Asynchronous Reset via the RESET Pin
An asynchronous hard reset is executed by momentarily pulling
RESET low. A reset restores the chip registers to the default settings.
Soft Reset via Register 0x000[2]
A soft reset is executed by writing Register 0x000[2] and
Register 0x000[5] = 1b. This bit is not self-clearing; it must be
cleared by writing Register 0x000[2] and Register 0x000[5] = 0b to
reset it and complete the soft reset operation. A soft reset restores
the default values to the internal registers. The soft reset bit does
not require an update registers command (Register 0x232) to be
issued.
相關(guān)PDF資料
PDF描述
ESM15DSUS CONN EDGECARD 30POS DIP .156 SLD
MCP112T-240E/TT IC VOLT DET 2.32V LOW SOT-23B
HK1608R10K-T INDUCTOR HI FREQ 100NH 10% 0603
ECE-P2WA821HX CAP ALUM 820UF 450V 20% SNAP
EGM12DTMS CONN EDGECARD 24POS R/A .156 SLD
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
AD9516-1 制造商:AD 制造商全稱:Analog Devices 功能描述:14-Output Clock Generator with Integrated 2.5 GHz VCO
AD9516-1/PCBZ 功能描述:BOARD EVALUATION FOR AD9516-1 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:PSoC® 主要目的:電源管理,熱管理 嵌入式:- 已用 IC / 零件:- 主要屬性:- 次要屬性:- 已供物品:板,CD,電源
AD9516-1BCPZ 功能描述:IC CLOCK GEN 2.5GHZ VCO 64-LFCSP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器,PLL,頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:PLL 頻率合成器 PLL:是 輸入:晶體 輸出:時(shí)鐘 電路數(shù):1 比率 - 輸入:輸出:1:1 差分 - 輸入:輸出:無/無 頻率 - 最大:1GHz 除法器/乘法器:是/無 電源電壓:4.5 V ~ 5.5 V 工作溫度:-20°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-LSSOP(0.175",4.40mm 寬) 供應(yīng)商設(shè)備封裝:16-SSOP 包裝:帶卷 (TR) 其它名稱:NJW1504V-TE1-NDNJW1504V-TE1TR
AD9516-1BCPZ-REEL7 功能描述:IC CLOCK GEN 2.5GHZ VCO 64-LFCSP RoHS:是 類別:集成電路 (IC) >> 時(shí)鐘/計(jì)時(shí) - 時(shí)鐘發(fā)生器,PLL,頻率合成器 系列:- 標(biāo)準(zhǔn)包裝:2,000 系列:- 類型:PLL 時(shí)鐘發(fā)生器 PLL:帶旁路 輸入:LVCMOS,LVPECL 輸出:LVCMOS 電路數(shù):1 比率 - 輸入:輸出:2:11 差分 - 輸入:輸出:是/無 頻率 - 最大:240MHz 除法器/乘法器:是/無 電源電壓:3.135 V ~ 3.465 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:32-LQFP 供應(yīng)商設(shè)備封裝:32-TQFP(7x7) 包裝:帶卷 (TR)
AD9516-1XCPZ 制造商:Analog Devices 功能描述:14-CHANNEL CLOCK GENERATOR WITH INTEGRATED 2.8 GHZ VCO - Bulk