73m2921 ETC-unknow, 73m2921 Datasheet - Page 33

• Manufacturer Part Number: 73m2921
• Description: Advanced Single Chip Modem
• Manufacturer: ETC-unknow

ANALOG VOLTAGE REFERENCE AND REGULATION (TA = -40 C to 85 C VDD 5V .5V except as noted)
Vbg
Vref
ANALOG VOLTAGE REFERENCE AND REGULATION (TA = -40 C to 85 C VDD 5V .5V except as noted)
PARAMETER
Input Impedance
Offset Voltage
DC Gain
Input Level
Differential analog
INPA, INNA
Analog Output Level
(OUTPA-OUTNA or
OUTNA-OUTPA)
Idle Channel Noise
Output THD
(OUTPA-OUTNA)
Input THD (INPA-INNA)
Intermodulation Distortion
DYNAMIC CHARACTERISTICS AND TIMING
PARAMETER
QAM/DPSK Modulator
FSK Modulator
ANSWER TONE GENERATOR
(2100 or 2225 Hz)
Output Amplitude
Output Distortion
February 99 Rev M
PARAMETER
Output Amplitude
Transmit Level
VPA, VPD = 5V, VREF HIGH = 0
CONDITION
INPA & INNA
DAC min scale
DAC max scale
Output load = 50 K
Vref = 1.25V
1 KHz sine wave
Vref = 1.25V
DAC max scale
Output load = 50 K
0.3KHz - 3.0KHz
1KHz sine max scale into DAC
Output load = 50 K
1KHz sine at 1.25V=Vref &1V
1.0KHz & 1.2KHz at ±18,876 counts
(full scale signal) into DAC,
Output load = 50 K
CONDITION
Output load 50K
TX scrambled marks (Vcc = 5V)
Transmit Attenuator set to 0000
Transmit Dotting Pattern
(Vcc = 5V, Vref = 1.25V)
CONDITION
Vcc = 5V
Distortion products in
CONDITION
receive band
(TA = -40 C to 85 C VDD 5V
max
TDK Semiconductor
pk-pk
MIN
1.1
-100
11.5
MIN
-0.5
MIN
MIN
0.5
50
.5V,differential mode, except as noted)
NOM
1.25
1.25
NOM
NOM
-10.0
-10.0
NOM
-10.0
0.55
Advanced Single
-65
0
0
MAX
1.4
Chip Modem
0.450
MAX
MAX
MAX
-9.0
-9.0
-9.0
100
-50
-50
-50
-40
0.5
0.6
73M2921
Page 33 of 41
UNIT
V
V
V
dBm0
dBm0
dBm0
UNIT
UNIT
UNIT
V
dBm
pk-pk
K
mV
dB
dB
dB
dB
dB
pk