X9525 Datasheet, PDF (20/26 Pages) Intersil Corporation – Fiber Channel/Gigabit Etherner Laser Diode Control for Fiber Optic Modules

X9525
POTENTIOMETER CHARACTERISTICS
Symbol
R_TOL
V_RHx
V_RLx
P_R
Parameter
End to End Resistance Tolerance
R_H Terminal Voltage (x = 1,2)
R_L Terminal Voltage (x = 1,2)
Power Rating ⁽¹⁾⁽⁶⁾
R_W
DCP Wiper Resistance
I_W
Wiper Current(6)
Noise
Absolute Linearity ⁽¹⁾
Relative Linearity ⁽¹⁾
R_TOTAL Temperature Coefficient
C_H/C_L/C_W
t_wcr
V_TRIP
t_PU
Potentiometer Capacitances
Wiper Response time
Vcc power-up DCP recall threshold
Vcc power-up DCP recall delay time ⁽⁶⁾
Min.
-20
Vss
Vss
-1
-1
Limits
Typ. Max.
+20
V_CC
V_CC
10
5
200
400
400 1200
4.4
+1
+1
±300
±300
10/10/25
Units
%
V
V
mW
mW
Ω
Ω
mA
µV/
sqt(Hz)
µV/
sqt(Hz)
MI⁽⁴⁾
MI⁽⁴⁾
ppm/°C
ppm/°C
pF
Test Conditions/Notes
R_TOTAL = 10kΩ (DCP1)
R_TOTAL = 50kΩ (DCP2)
I_W = 1mA, V_CC = 5 V,
V_RHx = Vcc, V_RLx = Vss
(x = 1,2).
I_W = 1mA, V_CC = 2.7 V,
V_RHx = Vcc, V_RLx = Vss
(x = 1,2)
R_TOTAL = 10kΩ ( DCP1)
R_TOTAL = 50kΩ (DCP2)
R_w(n)(actual) - R_{w(n)(expected)}
R_w(n+1) - [R_{w(n) + MI}]
R_TOTAL = 10kΩ (DCP1)
R_TOTAL = 50kΩ (DCP2)
See Figure 21.
200
µs See Figure 27.
V
0.7
1.0
1.3
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 = 1,2).
Notes: 1. Absolute Linearity is utilized to determine actual wiper resistance versus, expected resistance = (R_wx(n)(actual) - R_wx(n)(expected)) = ±1
Ml Maximum (x = 1,2).
Notes: 1. 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: 1. 1 Ml = Minimum Increment = R_TOT / (Number of taps in DCP - 1).
Notes: 1. Typical values are for T_A = 25°C and nominal supply voltage.
Notes: 1. This parameter is periodically sampled and not 100% tested.
20
FN8210.0
March 10, 2005