DS_1903_032
73M1903 Data Sheet
8.5.2 Transmitter
Table 18: Transmitter Performance Specifications
Parameter
Test Condition
Min
Nom
Max
Units
Code word of ± 32,767 @1 kHz;
TXBST0=0; TXBST1=0
DAC gain
(Transmit Path Gain)
70
µv/bit
Across TXAP and TXAN for
DAC input = 0
DC offset –Differential
Mode
-100
-80
100
80
mV
mV
DC offset -Common
Mode
Average of TXAP and TXAN for DAC
input = 0; relative to VREF
Code word of ± 32,767 @1 kHz;
relative to TXBST0=0; TXBST1=0
TXBST0 Gain
TXBST1 Gain
1.65
dB
dB
Code word of ± 32,767 @1 kHz;
relative to TXBST0=0; TXBST1=0
1.335
Code word of ± 32,767 @1 kHz; relative
to TXBST0=0;TXBST1=0 THD = 2nd and
3rd harmonic.
Total Harmonic
Distortion (THD)
-75
-80
-60
-85
-85
-70
dB
dB
dB
Code word of ± ( 32,767*0.8) @1 kHz;
relative to TXBST0=0;TXBST1=0 THD =
2
nd and 3rd harmonic.
Code word of ± ( 32,767*0.9) @1 kHz;
1200 Ω Resistor
across TNAN/TXAP
relative to TXBST0=1;TXBST1=1 THD =
2
nd and 3rd harmonic.
Code word of ± 32,767 @1 kHz;
relative to TXBST0=1;TXBST1=1
THD = 2nd and 3rd harmonic
-70
70
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)
dB
below
low
Intermod Distortion
tone
Refer to TBR 21 specifications for
description of complete requirements.
Idle Channel Noise
PSRR
200 Hz - 4.0 kHz
110
μV
dB
dB
-30 dBm signal at VPA
300 Hz – 30kHz
40
Passband Ripple
300 Hz - 3.2kHz
-0.125
0.125
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
Transmit Gain
Flatness
0.17
0
0.193
-0.12
dB
dB
dB
dB
Gain at 3.3 kHz
Rev. 2.0
31
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
