参数资料
型号: HMC700LP4E
厂商: Hittite Microwave Corporation
文件页数: 13/26页
文件大小: 0K
描述: IC FRACT-N PLL 16BIT 24QFN
标准包装: 1
类型: 整数 N/小数 N 分频
PLL:
输入: CMOS
输出: CMOS
电路数: 1
比率 - 输入:输出: 1:1
差分 - 输入:输出: 是/无
频率 - 最大: 8GHz
除法器/乘法器: 是/无
电源电压: 3.3V,5V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 24-VQFN 裸露焊盘
供应商设备封装: 24-QFN 裸露焊盘(4x4)
包装: 标准包装
其它名称: 1127-1064-6
For price, delivery and to place orders: Hittite Microwave Corporation, 2 Elizabeth Drive, Chelmsford, MA 01824
978-250-3343 tel 978-250-3373 fax Order On-line at www.hittite.com
Application Support: apps@hittite.com
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HMC700LP4 / 700LP4E
v11.0411
8 GHz 16-Bit Fractional-N PLL
Table 13. Reg 06h SD CFG Register
Bit
name
Width
Default
Description
[7:0]
reserved
87h
[9:8]
order
2
2h
Select the Modulator type
0 - not used
1 - not used
2 - type B
3 - type a
[10]
frac_rstb
1
0 holds the frac core in reset
reset is used for integer mode or integer mode with cSP
[11]
buff_rstb
1
0 holds the frac core buffers in reset
reset is used with frac_rstb=0 for integer mode, no cSP
[12]
bypass_mode
1
0
1 fractional modulator output is ignored, but fractional modulator
continues to be clocked, used to test the isolation of the
digital fractional modulator from the Vco output in integer
mode
[13]
autoseed_mode
1
loads the seed whenever the frac register is written
[14]
reserved
1
0
Must be kept at 0
[15]
fsk_enable
1
0
enables the FSK mode of operation and FSK input on SDi
pin, (see section FSK Modulation)
[16]
reserved
1
0
[17]
clkrq_refdiv_sel
1
0
selects the SD clock source
1 = reference divider clock
0 = Vco divider clock (recommended)
[18]
clkrq_invert_clk
1
inverts the selected sd clock
[19]
sd_spare_out
1
0
spare
[23:20]
csp_corr_magn
4
8h
cSP magnitude correction (see section cycle Slip Prevention (cSP))
0000 low magnitude
1111 high magnitude
sign of the correction is determined automatically by the cSP state machine
note: to Enable Frac Mode:
Set reg 6 [12:10]= 011
also, reg 9[9:7] or reg 9[4:2] must be adjusted to mitigate spurs in frac mode (Dn or Up Leakage)
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