參數(shù)資料
型號(hào): 73M1903C-IMR/F
廠商: Maxim Integrated Products
文件頁(yè)數(shù): 27/48頁(yè)
文件大?。?/td> 0K
描述: IC MODEM AFE MULTIREGIONAL 32QFN
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,500
通道數(shù): 2
電壓 - 電源,模擬: 3 V ~ 3.6 V
電壓 - 電源,數(shù)字: 3 V ~ 3.6 V
封裝/外殼: 32-VFQFN 裸露焊盤
供應(yīng)商設(shè)備封裝: 32-QFN(5x5)
包裝: 帶卷 (TR)
DS_1903C_033
73M1903C Data Sheet
Rev. 5.0
33
9
Analog Specifications
9.1
DC Specifications
VREF is not brought out to a pin on the 73M1903C. This specification is for information only. The VREF
voltage may be measured as the quiescent DC level at the transmit pins.
Table 16: Reference Voltage Specifications
Parameter
Test Condition
Min
Nom
Max
Units
VREF
VDD= 3.0V - 3.6V.
1.36
V
VREF Noise
300Hz-3.3 kHz
-86
-80
dBm600
VREF PSRR
300Hz-30 kHz
40*
dB
9.2
AC Specifications
Table 17 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 (+1.5 dB) or/and DTMFBST (+0.83 dB) for the combined total gain of 2.33 dB.
These can be used where higher-level DTMF tones are required.
Table 17: Maximum Transmit Levels
Transmit Type
Maximum
Differential Line
Level (dB m0)
Maximum Single-
Ended Level at TXA
Pins (dB m)
Peak to
rms Ratio
Single-Ended
rms Voltage at
TXA Pins (V)
Single-Ended
Peak Voltage at
TXA Pins (V)
VPA = 2.7 V to 3.6 V; 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
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