CAT525_04 Datasheet, PDF (3/12 Pages) Catalyst Semiconductor – Configured Digitally Programmable Potentiometer

CAT525
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 R_POT Match
—
Pot Resistance Tolerance
Voltage on V_REFH pin
2.7
Voltage on V_REFL pin
0V
Resolution
INL
Integral Linearity Error
DNL
Differential Linearity Error
R_OUT
Buffer Output Resistance
I_OUT
Buffer Output Current
TC_RPOT TC of Pot Resistance
C_H/C_L Potentiometer Capacitances
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
t_CSS
t_CSH
t_DIS
t_DIH
t_DO1
t_DO0
t_HZ
t_LZ
t_BUSY
t_PS
t_PROG
t_CLKH
t_CLKL
f_C
Analog
Minimum CS Low Time
CS Setup Time
CS Hold Time
DI Setup Time
DI Hold Time
Output Delay to 1
Output Delay to 0
Output Delay to High-Z
Output Delay to Low-Z
Erase/Write Cycle Time
PROG Setup Time
Minimum Pulse Width
Minimum CLK High Time
Minimum CLK Low Time
Clock Frequency
150
100
0
C_L=100pF,
50
see note 1
50
—
—
—
—
—
150
700
500
300
DC
t_DS
DPP Settling Time to 1 LSB
C_LOAD = 10 pF, V_DD = +5V
—
C_LOAD = 10 pF, V_DD = +3V
—
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.
Typ
24
+0.5
0.4
0.5
0.25
300
8/8
Max Units
kΩ
+1
%
+20
%
V_DD
V
V_DD - 2.7 V
%
1
LSB
0.5
LSB
10
Ω
3
mA
ppm/˚C
pF
Typ
Max
—
—
—
—
—
—
—
—
—
—
—
150
—
150
400
—
400
—
4
5
—
—
—
—
—
—
—
—
—
1
3
10
6
10
Units
ns
ns
ns
ns
ns
ns
ns
ns
ns
ms
ns
ns
ns
ns
MHz
µs
µs
3
Doc. No. 2001, Rev. E