參數(shù)資料
型號(hào): 73M1903-IGV
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 消費(fèi)家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQFP32
封裝: TQFP-32
文件頁(yè)數(shù): 25/45頁(yè)
文件大?。?/td> 449K
代理商: 73M1903-IGV
73M1903
Modem Analog Front End
DATA SHEET
Page: 31 of 45
2005 TERIDIAN Semiconductor Corporation
Rev 1.4
PERFORMANCE
Receiver
Parameter
Test Conditions
Min
Nom
Max
Units
Measured at RXAP/N relative to Vref
RXPULL=HI
230
k
Input Impedance
Measured at RXAP/N relative to Vref
RXPULL=LO
1.0
M
Receive Gain
Boost
Rxgain = 1; 1kHz; RXAP/N=0.116Vpk-diff
Gain Measured relative to Rxgain=0
Rxgain=1 for Fs=8Khz
Rxgain=1 for Fs=12Khz
Rxgain=1 for Fs=14.4Khz
17.0
16.2
15.7
18.5
17.4
17.2
20.0
18.7
dB
Total Harmonic
Distortion (THD)
THD = 2
nd and 3rd harmonic.
Rxgain=1
64
70
RXG Gain
Gain Measured relative to RXG[1:0]=11
(0dB) @1 KHz
RXG[1:0]=00
RXG[1:0]=01
RXG[1:0]=10
5.8
8.8
11.8
6
9
12
6.2
9.2
12.2
dB
Passband Gain
Input 1.16Vpk-diff at RXA. Measure gain at
0.5kHz, and 2KHz. Normalized to 1khz.
Gain at 0.5kHz
Gain at 1kHz (Normalized)
Gain at 2.0kHz
-0.29
-0.067
-0.042
0.000
0.183
0.21
0.43
dB
Input offset
Short RXAP to RXAN. Measure input
voltage relative to Vref
-30
0
30
mV
Sigma-Delta ADC
Modulation gain
Normalized to VBG=1.25V.
Includes the effect of AAF(-0.4dB) with
Bit1,0 of CTRL2=0,0.
41
V/bit
Maximum Analog
Signal Level at
RXAP/RXAN
Peak voltage measured differentially
across RXAP/RXAN.
1.16
Vpk-diff
Total Harmonic
Distortion (THD)
1kHz 1.16Vpk-diff at RXA with Rxg=11
THD = 2
nd and 3rd harmonic.
80
85
dB
Noise
Transmit V.22bis low band; FFT run on
ADC samples. Noise in 0 to 4kHz band
-85
-80
dBm
Crosstalk
0dBm 1000Hz sine wave at TXAP; FFT
on Rx ADC samples, 1
st four harmonics
Reflected back to receiver inputs.
-100
dB
Note: RXG[1:0] and RXGAIN are assumed to have settings of ‘0’ unless they are specified otherwise.
Table 15: -Receiver Performance Specifications
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