DS_1x22_001
73M1822/73M1922 Data Sheet
3.10 Receive Path
Table 19 list the receive path characteristics. All test inputs are driven by a signal generator at the collector
of Q5.
Table 19: Receive Path
Parameter
Test Condition
Min
Nom
Max
Units
–
Differential input
resistance
RXP/RXM
1000
–
kΩ
–
–
Input level
Input level
Differential, RXP/RXM
1.0
1.37
47
1.16
51
Vpk
V
Common mode, RXP/RXM
Overall ΣΔ ADC
modulation gain inclusive
of 73M1902 processing
Normalized to VRef=1.40 V.
RXG=00; RXM=0
43
µV/bit
–
–
Offset voltage
Rx gain
13
0
70
–
mV
dB
dB
dB
dB
dB
RXG=00
RXG=01
2
5
8
3
4
RXG=10
RXG=11
6
9
7
10
21.0
–
RXBST=1, RXG=00
Relative to 1 kHz
0.3 kHz – 3.3 kHz
Fs (8 kHz)
17.5
–
19.5
–
Overall receive
frequency response
inclusive of 73M1902
processing
-0.25
–
0
+0.25
–
dB
dB
-75
–
–
–
–
–
–
–
–
Idle noise
THD
300 Hz – 4 kHz
RXG[1:0]=00
RXBST=1
-81
-80
-60
-80
dBm
dB
Intermod distortion
1.0 kHz and 1.2 kHz
summed
300 Hz – 4 kHz
dB
–
–
Crosstalk
1 Vpk 1 kHz sine wave at
TXP; FFT on Rx ADC
-85
dBm
samples, first four harmonics
reflected to the line.
–
CMRR
PSRR
RXP=RXM 1 Vpk
40
–
–
–
dB
dB
-30 dBm signal at VPX in
Barrier Powered Mode;
300 Hz – 30 kHz.
40*
Rev. 1.6
25
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
