SP8401

www.DataSheet4U.com SP8401 Very Low Phase Noise 300MHz ÷ 10/11 DS3230 ISSUE 3.1 April 1994 The SP8401 is a very low phase noise variable modulus divider. Special circuit techniques have been used to reduce the phase noise considerably below that produced by standard dividers. The modulus control input is CMOS or TTL compatible. The SP8401 is packaged in a 28 pin plastic SO package to be compatible with the SP8400 and SP8402 devices. Ordering Information SP8401 KG MPES(Commercial Grade) FEATURES I Very low Phase Noise (Typically -160dBc/Hz at 1kHz offset) I Supply Voltage 5V N/C N/C N/C VCC +5V GND CLOCK INPUT CLOCK INPUT CLOCK INPUT CLOCK INPUT GND VCC +5V VCC +5V N/C MODULUS CONTROL 1 2 3 4 5 6 7 8 9 10 11 12 13 14 28 27 26 25 24 23 22 21 20 19 18 17 16 15 N/C N/C N/C N/C N/C N/C N/C OUTPUT OUTPUT N/C VCC +5V N/C N/C N/C ABSOLUTE MAXIMUM RATINGS Supply Voltage Output Current Storage Temperature Range Maximum Clock Input Voltage 6.5V 20mA -55°C to +125°C 2.5V p-p MP28 Fig.1 Pin connections - top view 0 –10 –20 –30 –40 –50 (f) (dBc/Hz) –3dB –60 –70 –80 –90 –100 –110 –120 –130 –140 –150 –160 –170 1 10 100 Frequency (Hz) 1k 10k 100k Fig.2 Typical single sideband phase noise measured at 300MHz SP8401 ELECTRICAL CHARACTERISTICS Guaranteed over: Supply voltage V CC = +4.75V to +5.25V Temperature Tamb = -10°C to +75° C Tested at +4.75V and +5.25V at T amb = +25°C Characteristic Supply current Output voltage swing Input sensitivity 50MHz to 300MHz Pin Min. 4, 11, 12, 18...