MIC3000 Datasheet, PDF (15/68 Pages) Micrel Semiconductor – SFP Management IC

MIC3000
VIN
VDDA
VMOD
VBIAS
APCDAC
MODDAC
FLTDAC
7-CH
MUX
VAUX[2:1]
VMPD
VRX
VILD+
VILD–
5-CH TEMP
MUX SENSOR
SIGMA-DELTA ADC
TEMP
SENSOR
Figure 2. Analog-to-Digital Converter Block Diagram
Channel
TEMP
VAUX
VMPD
VILD
VRX
ADC Resolution
(bits)
Conditions
Input Range (V)
8
N/A
8
See Table 6
8
GAIN = 0; BIASREF = 0
GNDA – V_REF
GAIN = 0; BIASREF = 1
V_DDA – (V_DDA – V_REF)
GAIN = 1; BIASREF = 0
GNDA – V_REF/4
GAIN = 1; BIASREF = 1
V_DDA – (V_DDA – V_REF/4)
8
VILD– = V_DDA
V_DDA – (VDDA – V_REF)
VILD– = GNDA
GNDA – V_REF
8
n/a
0 – V_REF
Table 5. A/D Input Signal Ranges and Resolutions
Note:
1. Assumes typical V_REF value of 1.22V.
October 2004
Channel
V_AUX[2:0] Input Range (V) LSB⁽¹⁾ (mV)
V_IN
000 = 00_h
0V to 5.5V
25.6mV
V_DDA
001 = 01_h
0V to 5.5V
25.6mV
V_BIAS
010 = 02_h
0V to 5.5V
25.6mV
V_MOD
011 = 03_h
0V to 5.5V
25.6mV
APCDAC
100 = 04_h
0V to V_REF
4.77mV
MODDAC 101 = 05_h
0V to V_REF
4.77mV
FLTDAC
110 = 06_h
0V to V_REF
4.77mV
Table 6. V_AUX Input Signal Ranges and Resolutions
Note:
1. Assumes typical V_REF value of 1.22V.
15
Micrel
LSB⁽¹⁾
1°C
4.77mV
1.17mV
4.77mV
4.77mV
M9999-101204