Datasheet > SP8861

SP8861

更新时间： 2024-11-24 22:50:11

品牌	Logo	应用领域
MITEL		/
页数	文件大小	规格书
13页	203K
描述
1·3GHz Low Power Single-Chip Frequency Synthesiser

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

SP8861 数据手册

SP8861

1·3GHz Low Power Single-Chip Frequency Synthesiser

Supersedes version in the1996 Professional Products IC Handbook, HB2480 - 3.0

DS3640 - 4.0 April 1998

The SP8861 is a low power single chip synthesiser

intended for professional radio applications, containing all the

elements(apartfromtheloopamplifier)requiredtobuildaPLL

frequency synthesis loop

The device is serially programmable by a three-wire data

highway and contains three independent buffers to store one

reference divider word and two local oscillator divider words.

A digital phase detector with two charge pumps,

programmable in phase and gain, are provided to improve

lock-up performance. The preset operation of the charge

pumps can be overwritten or the comparison frequencies

switched to output ports under control of the divider word. The

dual modulus ratio and so operating range is also

programmable through the same word.

28 27 26

PD2 OUTPUT

RPD

REF

POWER DOWN

GROUND

XTAL 1

XTAL2

SP8861

A power down mode is incorporated as a battery economy

feature.

RF INPUT

12 13 14 15 16 17 18

FEATURES

■ Improved Digital Phase Detector Eliminates

‘Dead Band’ Effects

HP28

■ Low Operating Power, Typically 175mW

■ 1·3GHz Operating Frequency

■ Complete Phase Locked Loop

■ High Input Sensitivity

■ Programmed throughThree-Wire Bus

■ Wide Range of Reference Division Ratios

■ Local Storage for Two Frequency Words, giving

Rapid Frequency Toggling

*F_PDand F_REFoutputs are reversed by the phase

detectorsensebitintheF1/F2programmingword. The

abovediagramiscorrectwhenthesensebitislow. See

Table 2 and Fig. 7.

_CC1, V_EE1 – preamplifier and prescaler supplies

_CC2, V_EE2 – oscillator supplies

_CC3, V_EE3 – charge pump 2 supplies

V_CC4, V_EE4 – ECL supplies

■ Programmable Phase Detector Gain

■ Power Down Mode

Fig. 1 Pin identification diagram (top view)

ABSOLUTE MAXIMUM RATINGS

Supply voltage

20·3V to 17V

255°C to 1150°C

240°C to 185°C

2·5V p-p

Storage temperature

Operating temperature

Prescaler input voltage

ORDERING INFORMATION

SP8861/NA/HP

12 3 4 5 6 7...13

中文翻译

下载PDF

与SP8861相关器件

型号	品牌	获取价格	描述	数据表
SP8861/NA/HP	ZARLINK	获取价格	1·3GHz Low Power Single-Chip Frequency Synthe
SP8861HP	MITEL	获取价格	1·3GHz Low Power Single-Chip Frequency Synthe
SP8861NAHP	MITEL	获取价格	1·3GHz Low Power Single-Chip Frequency Synthe
SP8902	MITEL	获取价格	5GHZ ±2 Fixed Modulus Divider
SP8902	ZARLINK	获取价格	5GHZ/ 2 Fixed Modulus Divider
SP8902/KG/MP1S	ZARLINK	获取价格	5GHZ/ 2 Fixed Modulus Divider
SP8902/KG/MP1T	ZARLINK	获取价格	5GHZ/ 2 Fixed Modulus Divider
SP8902ACDG	DYNEX	获取价格	Prescaler, Bipolar, CDIP8
SP8902ADG	DYNEX	获取价格	Prescaler, Bipolar, CDIP8
SP8902AFC	DYNEX	获取价格	Prescaler, Bipolar, CDFP8