X9522 Datasheet, PDF (22/29 Pages) Intersil Corporation – Laser Diode Control for Fiber Optic Modules

X9522
POTENTIOMETER CHARACTERISTICS
Symbol
R_TOL
V_RHx
V_RLx
Parameter
End to End Resistance Tolerance
R_H Terminal Voltage (x = 0,1,2)
R_L Terminal Voltage (x = 0,1,2)
P_R
Power Rating ⁽¹⁾⁽⁶)
R_W
DCP Wiper Resistance
I_W
Wiper Current⁽⁶⁾
Noise
Absolute Linearity ⁽²⁾
Relative Linearity ⁽³⁾
R_TOTAL Temperature Coefficient
C_H/C_L/C_W
t_wr
V_TRIP
t_PU
Potentiometer Capacitances
Wiper Response time⁽⁶⁾
Vcc / V1 power-up DCP recall
threshold
Vcc / V1 power-up DCP recall delay
time⁽⁶⁾
Limits
Min. Typ. Max. Units
Test Conditions/Notes
-20
+20
%
Vss
Vcc /
V1
V
Vss
Vcc /
V1
V
10
mW
R_TOTAL = 10kΩ (DCP0,
DCP1)
5
mW R_TOTAL = 100kΩ (DCP2)
200 400
I_W = 1mA, Vcc / V1 = 5 V,
Ω
V_RHx = Vcc / V1, V_RLx = Vss
(x = 0,1,2).
I_W = 1mA, Vcc / V1 = 2.7 V,
400 1200
Ω
V_RHx = Vcc / V1, V_RLx = Vss
(x = 0,1,2)
4.4 mA
mV/ R_TOTAL = 10kΩ (DCP0,
sqt(Hz) DCP1)
mV/
sqt(Hz)
R_TOTAL = 100kΩ (DCP2)
-1
+1
MI^{(4) R}w(n)(actual) ^{- R}w(n)(expected)
-1
+1
MI^{(4) R}w(n+1) ^{- [R}w(n) + MI^]
±300
ppm/°C
R_TOTAL = 10kΩ (DCP0,
DCP1)
±300
10/10/25
ppm/°C R_TOTAL = 100kΩ (DCP2)
pF _{See Figure 19.}
200
µs See Figure 25.
V
25
50
75
ms
Notes: 1. Power Rating between the wiper terminal R_WX(n) and the end terminals R_HX or R_LX - for ANY tap position n, (x = 0,1,2).
Notes: 2. Absolute Linearity is utilized to determine actual wiper resistance versus, expected resistance = (R_wx(n)(actual) - R_wx(n)(expected)) = ±1
Ml Maximum (x = 0,1,2).
Notes: 3. Relative Linearity is a measure of the error in step size between taps = R_Wx(n+1) - [R_wx(n) + Ml] = ±1 Ml (x = 0,1,2)
Notes: 4. 1 Ml = Minimum Increment = R_TOT / (Number of taps in DCP - 1).
Notes: 5. Typical values are for T_A = 25°C and nominal supply voltage.
Notes: 6. This parameter is periodically sampled and not 100% tested.
22
FN8208.0
March 10, 2005