English
Language : 

X9523_06 Datasheet, PDF (23/28 Pages) Intersil Corporation – Laser Diode Control for Fiber Optic Modules
◁
X9523
POTENTIOMETER CHARACTERISTICS
Symbol
RTOL
VRHx
VRLx
PR
Parameter
End to End Resistance Tolerance
RH Terminal Voltage (x = 0,1,2)
RL Terminal Voltage (x = 0,1,2)
Power Rating (1)(6)
RW
DCP Wiper Resistance
IW
Wiper Current (6)
Noise
Absolute Linearity (2)
Relative Linearity (3)
RTOTAL Temperature Coefficient
CH/CL/CW
twr
Potentiometer Capacitances
Wiper Response time(6)
Min.
-20
Vss
Vss
-1
-1
Limits
Typ. Max.
+20
VCC
VCC
10
5
200
400
400 1200
4.4
+1
+1
±300
±300
10/10/25
Units
%
V
V
mW
mW
Ω
Ω
mA
mV/
sqt(Hz)
mV/
sqt(Hz)
MI(4)
MI(4)
ppm/ C
ppm/ C
pF
Test Conditions/Notes
RTOTAL = 10kΩ (DCP0, DCP1)
RTOTAL = 100kΩ (DCP2)
IW = 1mA, VCC = 5V, VRHx = Vcc,
VRLx = Vss (x = 0,1,2).
IW = 1mA, VCC = 2.7V,
VRHx = Vcc, VRLx = Vss
(x = 0,1,2)
RTOTAL = 10kΩ (DCP0, DCP1)
RTOTAL = 100kΩ (DCP2)
Rw(n)(actual) - Rw(n)(expected)
Rw(n + 1) - [Rw(n) + MI]
RTOTAL = 10kΩ (DCP0, DCP1)
RTOTAL = 100kΩ (DCP2)
See Figure 21.
200
μs See Figure 29.
Notes: 1. Power Rating between the wiper terminal RWX(n) and the end terminals RHX or RLX - for ANY tap position n, (x = 0,1,2).
Notes: 2. Absolute Linearity is utilized to determine actual wiper resistance versus, expected resistance = (Rwx(n)(actual) - Rwx(n)(expected)) = ±1
Ml Maximum (x = 0,1,2).
Notes: 3. Relative Linearity is a measure of the error in step size between taps = RWx(n+1) - [Rwx(n) + Ml] = ±1 Ml (x = 0,1,2)
Notes: 4. 1 Ml = Minimum Increment = RTOT / (Number of taps in DCP - 1).
Notes: 5. Typical values are for TA = 25 C and nominal supply voltage.
Notes: 6. This parameter is periodically sampled and not 100% tested.
23
FN8209.1
January 3, 2006
 ▷