CAT523 Datasheet, PDF (4/15 Pages) Catalyst Semiconductor – Configured Digitally Programmable Potentiometer (DPP): Programmable Voltage Applications

CAT523
Not Recommended for New Design
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
See note 3
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
Buffer Output Resistance
Buffer Output Current
TC_RPOT TC of Pot Resistance
C_H/C_L 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
Typ Max Units
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
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
C_L = 100pF ⁽¹⁾
150
—
—
ns
100
—
—
ns
0
—
—
ns
50
—
—
ns
50
—
—
ns
—
—
150
ns
—
—
150
ns
—
400
—
ns
—
400
—
ns
—
4
5
ms
150
—
—
ns
700
—
—
ns
500
—
—
ns
300
—
—
ns
DC
—
1
MHz
Analog
t_DS DPP Settling Time to 1 LSB
C_LOAD = 10pF, V_DD = +5V
—
C_LOAD = 10pF, V_DD = +3V
—
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.
(3) The 24kΩ +20% resistors are configured as 4 resistors in parallel which would provide a measured value between V_REFH and V_REFL of 6kΩ
+20%. The individual 24kΩ resistors are not measurable but guaranteed by design and verification of the 6kΩ +20% value.
Doc. No. MD-2005 Rev. I
4
© 2008 SCILLC. All rights reserved.
Characteristics subject to change without notice