Rainbow Electronics DS1875 - Manual (Page 7)

DS1875
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
PWM-DAC Full-Scale Voltage V PWM-DAC 1.25 V
PWM-DAC Resolution 8 Bits
V PWM-DAC Full-Scale Voltage
Error
T A = +25°C 1.25 %
V PWM-DAC Integral Nonlinearity -1 1 LSB
V PWM-DAC Differential
Nonlinearity
-1 1 LSB
V PWM-DAC Temperature Drift -2 +2 %FS
SW Output Impedance 20
SW Frequency Error f SWER (Note 9) -5 +7 %
SW Duty Cycle D
MAX
89 90 91 %
Error-Amplifier Source Current -10 μA
Error-Amplifier Sink Current +10 μA
COMP High-Voltage Clamp 2.1 V
COMP Low-Voltage Clamp 0.8 V
Error-Amplifier
Transconductance
G M 425 μS
Error-Amplifier Output
Impedance
R EA 260 M
FB Pin Capacitance 5 pF
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
First BMD Sample Following BEN t FIRST (Note 10)
Remaining Updates During BEN t UPDATE (Note 10)
BEN High Time t BEN:HIGH 400 ns
BEN Low Time t BEN:LOW 96 ns
Output-Enable Time Following POA t INIT 10 ms
BIAS and MOD Turn-Off Delay t OFF 5 μs
BIAS and MOD Turn-On Delay t ON 5 μs
FETG Turn-On Delay t FETG:ON 5 μs
FETG Turn-Off Delay t FETG:OFF 5 μs
TIMING CHARACTERISTICS (CONTROL LOOP AND QUICK TRIP)
(V CC = +2.85V to +3.9V, T A = -40°C to +95°C, unless otherwise noted.)
PWM CHARACTERISTICS
(V CC = +2.85V to +3.9V, T A = -40°C to +95°C, unless otherwise noted.)
PON Triplexer and SFP Controller
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