UMA1022M Datasheet, PDF (13/20 Pages) NXP Semiconductors – Low cost dual frequency synthesizer for radio telephones

Philips Semiconductors
Low cost dual frequency synthesizer for
radio telephones
Product specification
UMA1022M
AC TIMING CHARACTERISTICS
V_DD = V_DDX = V_CCA = V_CCB = 3 V; T_amb = 25 °C; unless otherwise specified.
SYMBOL
PARAMETER
MIN.
t_PUP
t_PDWN
t_START
t_END
t_SEND
delay for initial power-up
time for power-down from E = 0 (ON_A/ON_B = 0)
time to turn-on either the RF or IF synthesizer from
ON_A/ON_B
time to turn-off either the RF or IF synthesizer from
ON_A/ON_B
waiting time before sending data on the serial bus
−
−
−
−
15 000
TYP.
400
100
50
70
−
MAX.
−
−
−
UNIT
µs
µs
µs
−
µs
−
µs
handbook, full pagewidth _{VDD = VCCA = VCCB}
Itot
ONA = '1'
or
ONB = '1'
E
tPUP
tSTART
tEND
tPDWN
tSEND
MGE631
Fig.4 AC timing characteristics.
1998 Dec 09
13