73M1822/73M1922 Data Sheet
DS_1x22_001
3.9 Transmit Path
Table 18 lists the transmit path characteristics. A pattern for a sinusoid of 1 kHz, full scale (code word of
+/- 32,767) from the 73M1x22 is forced and ACS is measured with R10=255 Ω. Test conditions are:
ACZ=00 (600 Ω termination), THEN=1, ATEN=1, DAA=01, TXBST=0.
Table 18: Transmit Path
Parameter
Test Condition
Min
Nom
Max
Units
Offset voltage
50% 1’s density relative to 1.4 V
Nom
–
25
–
mV
–
–
–
–
–
–
–
–
Tx gain
DAA=00
+2
0
dB
dB
DAA=01
DAA=10
-4
dB
DAA=11
-8
dB
AC swing
DAA=01
0.39
–
0.425
0.535
0.850
0.2751
0.295
0.265
-81
0.45
–
Vpk
Vpk
Vpk
Vpk
Vpk
Vpk
dBm
dB
DAA=00
–
–
TXBST=1, DAA=xx
ACZ=01
–
–
–
–
–
–
ACZ=10
ACZ=11
–
–
Idle noise
THD
300 Hz – 4 kHz
300 Hz – 4 kHz
300 Hz – 4 kHz
–
–
-80
Intermod distortion
1.0 kHz and 1.2 kHz
summed
–
-85
–
dB
PSRR
-30 dBm signal at VPX in Mixed
Mode; 300 Hz – 30 kHz
–
–
40*
dB
Pass band ripple
150 Hz – 3.3 kHz
Gain relative to 1 kHz
0.5 kHz
-0.125
–
–
0.17
0
+0.125
dB
dB
dB
dB
dB
dB
dB
–
–
–
–
–
–
–
–
–
–
–
–
1.0 kHz
2.0 kHz
0.193
-0.12
-75
3.3 kHz
Aliased image
Fs +/- 1 kHz, relative to 1 kHz
24
Rev. 1.6
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
