Instruction Manual

6 ______________________________________________________________________________________
DS1876
SFP Controller with Dual LDD Interface
MOD_, APC_ ELECTRICAL CHARACTERISTICS
(V
CC
= +2.85V to +3.9V, T
A
= -40NC to +95NC, unless otherwise noted.)
ANALOG VOLTAGE MONITORING CHARACTERISTICS
(V
CC
= +2.85V to +3.9V, T
A
= -40NC to +95NC, unless otherwise noted.)
ANALOG QUICK-TRIP CHARACTERISTICS
(V
CC
= +2.85V to +3.9V, T
A
= -40NC to +95NC, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Main Oscillator Frequency f
OSC
5 MHz
Delta-Sigma Input-Clock
Frequency
f
DS
f
OSC
/2 MHz
Reference Voltage Input (REFIN) V
REFIN
Minimum 0.1FF to GND
2 V
CC
V
Output Range 0 V
REFIN
V
Output Resolution
See the Delta-Sigma Outputs section for
details
10 Bits
Output Impedance R
DS
35 100
I
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ADC Resolution 13 Bits
Input/Supply Accuracy
(BMON_, PMON_, V
CC
)
ACC At factory setting 0.25 0.5 %FS
Update Rate for Temperature,
BMON_, PMON_, V
CC
t
RR
64 78 ms
Input/Supply Offset
(BMON_, PMON_, V
CC
)
V
OS
(Note 3) 0 5 LSB
Factory Setting (Note 4)
BMON_, PMON_ 2.5
V
V
CC
6.5536
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
TXP HI, TXP LO Full-Scale
Voltage
2.507 V
HBIAS Full-Scale Voltage 1.25 V
PMON_ Input Resistance 35 50 65
kW
Resolution 8 Bits
Error
T
A
= +25°C ±2
%FS
Integral Nonlinearity -1 +1 LSB
Differential Nonlinearity -1 +1 LSB
Temperature Drift -2.5 +2.5 %FS
Offset -5 +10 mV