73M2901/5V
Advanced Single
Chip Modem
8
ELECTRICAL SPECIFICATIONS
(continued)
RECEIVER
(continued)
PARAMETER
TEST CONDITION
MIN
NOM
MAX
UNITS
Input Impedance
RXA
150
---
---
k
W
Receive Gain
Boost
SFR 96h bit 2 (Rxgain) = 1
2.7
3.0
3.3
dB
VREF=1.25V
0.587
Vpk
Maximum Input
Level at RXA
VREF=2.25V
1.069
Vpk
Total Harmonic
Distortion (THD)
1kHz 450mV-pk on RXA
THD = 2
nd
and 3
rd
harmonic.
-70
-50
dB
DC CHARACTERISTICS
PARAMETER
SYMBOL
CONDITION
MIN
NOM
MAX
UNIT
Input Low Voltage
(Except OSCIN,RESET)
VIL
-0.5
0.2Vcc
V
Input Low Voltage
OSCIN,RESET
VIL
-0.5
0.2 Vcc
V
Input High Voltage
(Except OSCIN,RESET)
VIH
0.5 Vcc
Vcc + 0.5
V
Input High Voltage
OSCIN,RESET
VIH
0.7 Vcc
Vcc + 0.5
V
Output Low Voltage
(Except OSCOUT)
VOL
IOL = 4mA
0.45
V
Output Low Voltage
OSCOUT
VOLOSC
IOL = 3.0mA
0.7
V
Output High Voltage
(Except OSCOUT)
VOH
IOH = -4mA
Vcc – 0.45
V
Output High Voltage
OSCOUT
VOHOSC
IOH =-3.0mA
Vcc – 0.9
V
Input Leakage Current
(Except OSCIN)
IIH
Vss < Vin < Vcc
1
m
A
Input Leakage Current
OSCIN
IIH
Vss < Vin < Vcc
1
30
m
A
