Datasheet

DS1886
SFP and PON ONU Controller
with Digital LDD Interface
11Maxim Integrated
DAC ELECTRICAL CHARACTERISTICS
(V
CC
= +2.97V to +3.63V, T
A
= -40NC to +95NC, unless otherwise noted.) (Note 1)
ANALOG VOLTAGE MONITORING CHARACTERISTICS
(V
CC
= +2.97V to +3.63V, T
A
= -40NC to +95NC, unless otherwise noted.) (Note 1)
DIGITAL THERMOMETER CHARACTERISTICS
(V
CC
= +2.97V to +3.63V, T
A
= -40NC to +95NC, unless otherwise noted.) (Note 1)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Delta-Sigma Input Clock
Frequency
f
DS
2.1 MHz
Reference Voltage Input (REFIN) V
REFIN
Minimum 0.1µF to GND 2 V
CC
V
Output Range 0 V
REFIN
V
Output Resolution
See the Delta-Sigma Output and Reference
section for details (DAC FS[9:2] = FFh)
10 Bits
Output Impedance R
DS
V
REFIN
= 2.5V 45 100
I
Recovery After Power-Up t
INIT_DAC
From V
CC
> VCC LO alarm or warning
See the Startup Timing
Characteristics table
ms
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ADC Resolution (Note 4) 13 Bits
INL
T
A
= +25NC
-3 +3 LSB
DNL -1 +1 LSB
Update Rate for Temperature,
TXMON (TXB/TXP),
RSSIP-RSSIN, V
CC
t
RR
RSSIP-RSSIN requires only a coarse
conversion (Note 5)
30 ms
Update Rate for RSSIP-RSSIN t
R/R2
RSSIP-RSSIN requires a fine conversion 36 ms
Input/Supply Offset (TXMON,
RSSIP, RSSIN, V
CC
)
V
OS
(Notes 5, 6) -1 0 +1 LSB
Factory Setting Full Scale
TXMON and RSSIP-RSSIN coarse
(Notes 6, 7)
2.5
V
V
CC
(Note 7) 6.5536
RSSIP-RSSIN fine (Note 7) 312.5 µV
Temperature LSB Weighting 1/256
NC
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Thermometer Error T
ERR
-40NC to +95NC, guaranteed by design
-3 +3
NC