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| X9470 Datasheet, PDF (7/25 Pages) Xicor Inc. – RF Power Amplifier (PA) Bias Controller | |||
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Preliminary Information
X9470
BIAS ADJUSTMENT CIRCUIT BLOCK
A.C. OPERATING CHARACTERISTICS
Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; TA = -40°C to +85°C, unless
otherwise noted.)
Symbol
tCl
tlD
tlL
tlH
tlC(10)
tIW(10)(11)
tCYC
tR, tF(10)
Parameter
CS to SCL Setup
Vsense Change to INC/DEC Change
SCL LOW Period
SCL HIGH Period
SCL Inactive to CS Inactive
SCL to VBIAS Change
SCL Cycle Time
SCL Input Rise and Fall Time
Min.
100
1.5
1.5
100
3
Limits
Typ.(9)
5
3
Max.
500
Units
ns
µs
µs
µs
ns
µs
µs
ns
A.C. TIMING
CS
tCYC
tCI
tIL
tIH
tIC
SCL
tID
INC/DEC
tIW
VBIAS
(Vsense+ â
Vsense-)
90% 90%
10%
tF
tR
Note: (11) MI in the A.C. timing diagram refers to the minimum incremental change in the VBIAS output due to a change in the wiper position.
REV 11.16 3/20/03
www.xicor.com
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