參數(shù)資料
型號: 73M1903C-IM
廠商: TERIDIAN SEMICONDUCTOR CORP
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, QCC32
封裝: LEAD FREE, QFN-32
文件頁數(shù): 26/45頁
文件大?。?/td> 459K
代理商: 73M1903C-IM
73M1903C
Modem Analog Front End
DATA SHEET
Page: 32 of 45
2005 TERIDIAN Semiconductor Corporation
Rev 3.4
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
-0.2
-0.042
0.000
-0.06
0.21
0.2
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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