User guide

DS1875
PON Triplexer and SFP Controller
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DAC Output Range 2.5 V
DAC Output Resolution 8 Bits
DAC Output Integral Nonlinearity -1 +1 LSB
DAC Output Differential
Nonlinearity
-1 +1 LSB
DAC Error T
A
= +25°C -1.25 +1.25 %FS
DAC Temperature Drift -2 +2 %FS
DAC Offset -12 +12 mV
Maximum Load -500 +500 μA
Maximum Load Capacitance 250 pF
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BMD, TXP HI, TXP LO Full-Scale
Voltage
V
APC
(Note 4) 2.5 V
HBIAS Full-Scale Voltage (Note 5) 1.25 V
BMD Input Resistance 35 50 65 k
Resolution 8 Bits
Error T
A
= +25°C (Note 6) ±2 %FS
Integral Nonlinearity -1 +1 LSB
Differential Nonlinearity -1 +1 LSB
Temperature Drift -2.5 +2.5 %FS
ANALOG OUTPUT CHARACTERISTICS
(V
CC
= +2.85V to +3.9V, T
A
= -40°C to +95°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
BIAS Current I
BIAS
(Note 1) 1.2 mA
I
BIAS
Shutdown Current I
BIAS:OFF
10 100 nA
Voltage at I
BIAS
0.7 1.2 1.4 V
MOD Full-Scale Voltage V
MOD
(Note 5) 1.25 V
MOD Output Impedance (Note 7) 3 k
V
MOD
Error T
A
= +25°C (Note 8) -1.25 +1.25 %FS
V
MOD
Integral Nonlinearity -1 +1 LSB
V
MOD
Differential Nonlinearity -1 +1 LSB
V
MOD
Temperature Drift -2 +2 %FS
ANALOG INPUT CHARACTERISTICS (BMD, TXP HI, TXP LO, HBIAS)
(V
CC
= +2.85V to +3.9V, T
A
= -40°C to +95°C, unless otherwise noted.)
ELECTRICAL CHARACTERISTICS (DAC1 AND M4DAC)
(V
CC
= +2.85V to +3.9V, T
A
= -40°C to +95°C, unless otherwise noted.)