X9251 Datasheet, PDF (17/25 Pages) Xicor Inc. – Quad Digitally-Controlled (XDCP) Potentiometer

X9251
EQUIVALENT A.C. LOAD CIRCUIT
V_CC
2kΩ
SO pin
2kΩ 10pF
SPICE Macromodel
R_TOTAL
R_H
C_L
C_W
10pF
25pF
R_W
R_L
C_L
10pF
AC TIMING
Symbol
f_SCK
t_CYC
t_WH
t_WL
t_LEAD
t_LAG
t_SU
t_H
t_RI
t_FI
t_DIS
t_V
t_HO
t_RO
t_FO
t_HOLD
t_HSU
t_HH
t_HZ
t_LZ
T_I
t_CS
t_WPASU
t_WPAH
Parameter
SPI clock frequency
SPI clock cycle rime
SPI clock high rime
SPI clock low time
Lead time
Lag time
SI, SCK, HOLD and CS input setup time
SI, SCK, HOLD and CS input hold time
SI, SCK, HOLD and CS input rise time
SI, SCK, HOLD and CS input fall time
SO output disable time
SO output valid time
SO output hold time
SO output rise time
SO output fall time
HOLD time
HOLD setup time
HOLD hold time
HOLD low to output in high Z
HOLD high to output in low Z
Noise suppression time constant at SI, SCK, HOLD and CS inputs
CS deselect time
WP, A0 setup time
WP, A0 hold time
Min.
500
200
200
250
250
50
50
0
0
400
100
100
2
0
0
Max.
2
2
2
250
200
100
100
100
100
10
Units
MHz
ns
ns
ns
ns
ns
ns
ns
µs
µs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
µs
ns
ns
REV 1.3.3 2/10/04
www.xicor.com
Characteristics subject to change without notice. 17 of 25