參數(shù)資料
型號: ADF4151BCPZ-RL7
廠商: Analog Devices Inc
文件頁數(shù): 23/28頁
文件大小: 0K
描述: IC FRACTION-N FREQ SYNTH 32LFCSP
標(biāo)準(zhǔn)包裝: 1,500
類型: *
PLL:
輸入: CMOS,TTL
輸出: 時鐘
電路數(shù): 1
比率 - 輸入:輸出: 2:1
差分 - 輸入:輸出: 是/無
頻率 - 最大: 3.5GHz
除法器/乘法器: 是/是
電源電壓: 3 V ~ 3.6 V
工作溫度: -40°C ~ 85°C
安裝類型: 表面貼裝
封裝/外殼: 32-WFQFN 裸露焊盤,CSP
供應(yīng)商設(shè)備封裝: 32-LFCSP-WQ(5x5)
包裝: 帶卷 (TR)
ADF4151
Data Sheet
Rev. B | Page 4 of 28
Parameter
B Version
Unit
Conditions/Comments
Min
Typ
Max
NOISE CHARACTERISTICS
Normalized In-Band Phase Noise
Floor (PNSYNTH)3
221
dBc/Hz
PLL loop BW = 500 kHz (ABP = 3 ns)
Normalized 1/f Noise (PN1_f)4
118
dBc/Hz
10 kHz offset. Normalized to 1 GHz (ABP = 3 ns)
Normalized In-Band Phase Noise
Floor (PNSYNTH)3
220
dBc/Hz
PLL loop BW = 500 kHz (ABP = 6 ns);
low noise mode
Normalized 1/f Noise (PN1_f)4
115
dBc/Hz
10 kHz offset; normalized to 1 GHz (ABP = 6 ns);
low noise mode
Spurious Signals Due to PFD
Frequency5
107
dBc
PFD = 25 MHz
1
AC coupling ensures AVDD/2 bias.
2
TA = 25°C; AVDD = DVDD = 3.6 V; prescaler = 4/5; fREFIN = 130 MHz; fPFD = 26 MHz; fRF = 1.742 GHz.
3
The synthesizer phase noise floor is estimated by measuring the in-band phase noise at the output of the VCO and subtracting 20 log N (where N is the N divider
value) and 10 log FPFD. PNSYNTH = PNTOT – 10 log fPFD – 20 log N
4
The PLL phase noise is composed of 1/f (flicker) noise plus the normalized PLL noise floor. The formula for calculating the 1/f noise contribution at an RF frequency (fRF)
and at a frequency offset (f) is given by PN = P1_f + 10 log(10 kHz/f) + 20 log(fRF/1 GHz). Both the normalized phase noise floor and flicker noise are modeled in ADIsimPLL
5
Spurious measured on EVAL-ADF4151EB1Z with RF buffer between VCO output and RF input by-passed, using a Rohde & Schwarz FSUP signal source analyzer.
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