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參數資料
型號: 73M1903C-IM/F
廠商: MAXIM INTEGRATED PRODUCTS INC
元件分類: 消費家電
英文描述: SPECIALTY CONSUMER CIRCUIT, PQCC32
封裝: LEAD FREE, QFN-32
文件頁數: 29/48頁
文件大小: 487K
代理商: 73M1903C-IM/F
DS_1903C_033
73M1903C Data Sheet
Rev. 5.0
35
9.3.2
Transmitter
Table 19: Transmitter Performance Specifications
Parameter
Test Condition
Min
Nom
Max
Units
DAC gain
(Transmit Path Gain)
Code word of
± 32,767 @1 kHz;
TXBST0=0; DTMFBST=0
70
v/bit
DC offset –
Differential Mode
Across TXAP and TXAN for
DAC input = 0
-100
100
MV
DC offset – Common
Mode
Average of TXAP and TXAN for DAC input = 0;
relative to VREF
-80
80
MV
TXBST0 Gain
Code word of
± 32,767 @1 kHz;
relative to TXBST0=0; TXBST1=0
1.65
DB
DTMFBST Gain
Code word of
± 32,767 @1 kHz;
relative to TXBST0=0; TXBST1=0
1.335
DB32
Total Harmonic
Distortion (THD)
200
Resistor
across TNAN/TXAP
Code word of
± 24,575 (75% scale) @1 kHz;
relative to TXBST0=0;TXBST1=0
THD = 2
nd and 3rd harmonic.
-80
-85
dB
Code word of
± 26,213 (80% scale) @1 kHz;
relative to TXBST0=0;TXBST1=0
THD = 2
nd and 3rd harmonic.
-75
-85
dB
Code word of
± 29,490 (90% scale) @1 kHz;
relative to TXBST0=1;TXBST1=1
THD = 2
nd and 3rd harmonic.
-60
-70
dB
Code word of
± 29,490(90% scale) @1 kHz;
relative to TXBST0=1;DTMFBST=1
THD = 2
nd and 3rd harmonic.
-70
dB
Intermod Distortion
At output (TXAP-TXAN): DTMF
1.0 kHz, 1.2 kHz sine waves, summed
2.0 Vpk (-2 dBm tone summed with 0 dBm tone)
Refer to TBR 21 specifications for description of
complete requirements.
70
dB
below
low
tone
Idle Channel Noise
200 Hz - 4.0 kHz
110
μV
PSRR
-30 dBm signal at VPA
300 Hz - 30 kHz
40
dB
Passband Ripple
300 Hz - 3.2 kHz
-0.125
0.125
dB
Transmit Gain
Flatness
Code word of
± 32,767 @1 kHz. Measure gain
at 0.5 kHz, and 2 kHz relative to 1 kHz.
Gain at 0.5 kHz
Gain at 1 kHz (Normalized)
Gain at 2.0 kHz
Gain at 3.3 kHz
0.17
0
0.193
-0.12
dB
TXAP/N output
impedance
differentially
(TXDIS=1)
TXDIS =1.
Measure impedance differentially between TXAP
and TXAN.
160
k
Txap/n common
output offset
(TXDIS=1)
TXDIS=1
Short TXAP and TXAN. Measure the voltage
respect to Vbg
-20
0
20
mV
Note: TXBST0 and DTMFBS are assumed have setting 0’s unless they are specified otherwise.
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