VRF+ (Pin 13): 3.15V to 3.45V Positive Supply Pin for
參數(shù)資料
型號(hào): LTC6946IUFD-1#PBF
廠商: Linear Technology
文件頁(yè)數(shù): 3/30頁(yè)
文件大?。?/td> 0K
描述: IC INTEGER-N PLL W/VCO 28-QFN
軟件下載: PLLWizard™
PLLWizard™, with .NET 2.0 installer
標(biāo)準(zhǔn)包裝: 73
類型: 時(shí)鐘/頻率合成器(RF/IF),分?jǐn)?shù)-N,整數(shù)-N,
PLL:
輸入: 時(shí)鐘
輸出: 時(shí)鐘
電路數(shù): 1
比率 - 輸入:輸出: 1:1
差分 - 輸入:輸出: 是/是
頻率 - 最大: 3.74GHz
除法器/乘法器: 是/是
電源電壓: 3.15 V ~ 5.25 V
工作溫度: -40°C ~ 105°C
安裝類型: 表面貼裝
封裝/外殼: 28-WFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 28-QFN(4x5)
包裝: 管件
LTC6946
11
6946fa
PIN FUNCTIONS
VRF+ (Pin 13): 3.15V to 3.45V Positive Supply Pin for
RF Circuitry. This pin should be bypassed directly to the
ground plane using a 0.01μF ceramic capacitor as close
to the pin as possible.
BB (Pin 14): RF Reference Bypass. This output must be
bypassed with a 1.0μF ceramic capacitor to GND. Do not
couple this pin to any other signal.
TUNE (Pin 15): VCO Tuning Input. This frequency control
pin is normally connected to the external loop filter. See
the Applications Information section for more details.
TB (Pin 16): VCO Bypass. This output must be bypassed
with a 2.2μF ceramic capacitor to GND, and is normally
connected to CMA, CMB and CMC with a short trace. Do
not couple this pin to any other signal.
CMC, CMB, CMA (Pins 18, 19, 20): VCO Bias Inputs. These
inputs are normally connected to TB with a short trace
and bypassed with a 2.2μF ceramic capacitor to GND. Do
not couple these pins to any other signal. For best phase
noise performance, do not place a trace between these
pads underneath the package.
VVCO+ (Pin 22): 4.75V to 5.25V Positive Supply Pin for
VCO Circuitry. This pin should be bypassed directly to the
ground plane using both 0.01μF and 1μF ceramic capaci-
tors as close to the pin as possible.
GND (23): Negative Power Supply (Ground). This pin is
attached directly to the die attach paddle (DAP) and should
be tied directly to the ground plane.
VCP+ (Pin 24): 4.0V to 5.25V Positive Supply Pin for Charge
Pump Circuitry. This pin should be bypassed directly to
the ground plane using a 0.1μF ceramic capacitor as close
to the pin as possible.
CP (Pin 25): Charge Pump Output. This bi-directional
current output is normally connected to the external loop
filter. See the Applications Information section for more
details.
VREF+ (Pin 26): 3.15V to 3.45V Positive Supply Pin for
Reference Input Circuitry. This pin should be bypassed
directly to the ground plane using a 0.1μF ceramic capaci-
tor as close to the pin as possible.
REF+, REF(Pins 27, 28):
Reference Input Signals. This
differential input is buffered with a low noise amplifier,
which feeds the reference divider and reference buffer.
They are self-biased and must be AC-coupled with 470pF
capacitors. If used single ended, bypass REFto GND with
a 470pF capacitor.
GND (Exposed Pad Pin 29): Negative Power Supply
(Ground). The package exposed pad must be soldered
directly to the PCB land. The PCB land pattern should have
multiple thermal vias to the ground plane for both low
ground inductance and also low thermal resistance.
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LTC6946IUFD-2#TRPBF 功能描述:IC INTEGER-N PLL W/VCO 28QFN 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:1,000 系列:Precision Edge® 類型:時(shí)鐘/頻率合成器 PLL:無(wú) 輸入:CML,PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無(wú)/無(wú) 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤,16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?(3x3) 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND
LTC6946IUFD-3#PBF 功能描述:IC INTEGER-N PLL W/VCO 28-QFN 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(wú)/無(wú) 頻率 - 最大:1GHz 除法器/乘法器:是/無(wú) 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
LTC6946IUFD-3#TRPBF 功能描述:IC INTEGER-N PLL W/VCO 28QFN 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:1,000 系列:Precision Edge® 類型:時(shí)鐘/頻率合成器 PLL:無(wú) 輸入:CML,PECL 輸出:CML 電路數(shù):1 比率 - 輸入:輸出:2:1 差分 - 輸入:輸出:是/是 頻率 - 最大:10.7GHz 除法器/乘法器:無(wú)/無(wú) 電源電壓:2.375 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:16-VFQFN 裸露焊盤,16-MLF? 供應(yīng)商設(shè)備封裝:16-MLF?(3x3) 包裝:帶卷 (TR) 其它名稱:SY58052UMGTRSY58052UMGTR-ND
LTC6946-x 制造商:LINER 制造商全稱:Linear Technology 功能描述:16-Bit, 20Msps Low Noise Dual ADC