X9470
BIAS ADJUSTMENT CIRCUIT BLOCK
A.C. OPERATING CHARACTERISTICS
Recommended Operating Conditions: (Vcc, V+ = 4.75 to 5.25V; Vsense+, Vsense- = 26V; T A = -40°C to +85°C, unless
otherwise noted.)
Limits
Symbol
Parameter
Min.
Typ. (9)
Max.
Units
t Cl
t lD
t lL
t lH
CS to SCL Setup
Vsense Change to INC/DEC Change
SCL LOW Period
SCL HIGH Period
100
1.5
1.5
5
ns
μ s
μ s
μ s
t lC
(10)
SCL Inactive to CS Inactive
100
ns
t IW(10)(11)
t CYC
SCL to V BIAS Change
SCL Cycle Time
3
3
μ s
μ s
t R, t F
(10)
SCL Input Rise and Fall Time
500
ns
A.C. TIMING
CS
t CYC
SCL
t CI
t IL
t ID
t IH
t IC
t F
90% 90%
10%
t R
INC/DEC
t IW
V BIAS
(Vsense+ –
Vsense-)
Note:
(11) MI in the A.C. timing diagram refers to the minimum incremental change in the V BIAS output due to a change in the wiper position.
7
FN8204.0
March 8, 2005
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