CAT522_0710 Datasheet, PDF (4/15 Pages) Catalyst Semiconductor – Configured Digitally Programmable Potentiometer (DPP™): Programmable Voltage Applications

CAT522
POTENTIOMETER CHARACTERISTICS
V_DD = +2.7V to +5.5V, V_REFH = V_DD, V_REFL = 0V, unless otherwise specified
Symbol Parameter
Conditions
Min
R_POT Potentiometer Resistance
R_POT to RPOT Match
—
Pot Resistance Tolerance
Voltage on V_REFH pin
2.7
Voltage on V_REFL pin
0
Resolution
INL Integral Linearity Error
DNL Differential Linearity Error
R_OUT
I_OUT
TC_RPOT
C_H/C_L
Buffer Output Resistance
Buffer Output Current
TC of Pot Resistance
Potentiometer Capacitances
Typ
24
±0.5
0.4
0.5
0.25
300
8/8
Max
±1
±20
V_DD
V_DD - 2.7
1
0.5
10
3
Units
kΩ
%
%
V
V
%
LSB
LSB
Ω
mA
ppm/ºC
pF
AC ELECTRICAL CHARACTERISTICS
V_DD = +2.7V to +5.5V, V_REFH = V_DD, V_REFL = 0V, unless otherwise specified
Symbol Parameter
Conditions
Min
Digital
t_CSMIN
Minimum CS Low Time
150
t_CSS
CS Setup Time
100
t_CSH
CS Hold Time
0
t_DIS
DI Setup Time
t_DIH
DI Hold Time
50
C_L = 100pF⁽¹⁾
50
t_DO1
Output Delay to 1
—
t_DO0
Output Delay to 0
—
t_HZ
Output Delay to High-Z
—
t_LZ
Output Delay to Low-Z
—
t_BUSY
Erase/Write Cycle Time
—
t_PS
PROG Setup Time
150
t_PROG
Minimum Pulse Width
700
t_CLKH
Minimum CLK High Time
500
t_CLKL
Minimum CLK Low Time
300
f_C
Clock Frequency
DC
Analog
t_DS
DPP Settling Time to 1 LSB
C_LOAD = 10pF, V_DD = +5V
—
C_LOAD = 10pF, V_DD = +3V
—
Typ Max Units
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
150
ns
—
150
ns
400
—
ns
400
—
ns
4
5
ms
—
—
ns
—
—
ns
—
—
ns
—
—
ns
—
1
MHz
3
10
µs
6
10
µs
Notes:
(1) All timing measurements are defined at the point of signal crossing V_DD / 2.
(2) These parameters are periodically sampled and are not 100% tested.
Doc. No. MD-2004 Rev. G
4
© Catalyst Semiconductor, Inc.
Characteristics subject to change without notice