参数资料
型号: 73M1903-IGV
厂商: TERIDIAN SEMICONDUCTOR CORP
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP32
封装: TQFP-32
文件页数: 24/45页
文件大小: 449K
代理商: 73M1903-IGV
73M1903
Modem Analog Front End
DATA SHEET
ge: 30 of 45
2005 TERIDIAN Semiconductor Corporation
Rev 1.4
ANALOG SPECIFICATIONS
DC SPECIFICATIONS
Vref should be connected to an external bypass capacitor with a minimum value of 0.1uF. This pin is not
intended for any other external use.
Parameter
Test Condition
Min
Nom
Max
Units
Vref
VDD= 3.0V - 3.6V.
1.36
V
Vref Noise
300Hz-3.3kHz
-86
-80
dBm600
Vref PSRR
300Hz-30kHz
40*
dB
Table 13: -Reference Voltage Specifications
AC SPECIFICATIONS
The table below shows the maximum transmit levels that the output drivers can deliver before distortion
through the DAA starts to become significant. The loss though the DAA transmit path is assumed to be 7
dB. The signals presented at TXAP and TXAN are symmetrical. The transmit levels can be increased by
setting either TXBST0 (+1.5dB) or/and DTMFBST (+0.83dB) for the combined total gain of 2.33dB.
These can be used where higher-level DTMF tones are required.
MAXIMUM TRANSMIT LEVELS
Transmit Type
Maximum
differential line
level (dBm0)
Maximum single-
ended level at
TXA pins (dBm)
peak to
rms ratio
Single-ended rms
Voltage at TXA
pins (V)
Single-ended
Peak Voltage at
TXA pins (V)
VPA=2.7V to 3.6V; All rms and peak voltages are relative to Vref
V.90
-12.0
-11.0
4
0.2175
0.87
QAM
-7.3
-6.3
2.31
0.377
0.87
DPSK
-5.1
-4.1
1.81
0.481
0.87
FSK
-3.0
-2.0
1.41
0.617
0.87
DTMF (high tone)
-7.8
-6.8
1.41
0.354
0.500
DTMF (low tone)
-9.8
-8.8
1.41
0.283
0.400
Table 14: -Maximum Transmit Levels
相关PDF资料
PDF描述
73M1903-IM SPECIALTY CONSUMER CIRCUIT, QCC32
73M1903-IGV/F SPECIALTY CONSUMER CIRCUIT, PQFP32
73M1903-IGV SPECIALTY CONSUMER CIRCUIT, PQFP32
73M1903-IM SPECIALTY CONSUMER CIRCUIT, QCC32
73M1903-IM/F SPECIALTY CONSUMER CIRCUIT, PQCC32
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