73K224L
V.22bis, V.22, V.21, Bell 212A, 103
Single-Chip Modem
DATA SHEET
ELECTRICAL SPECIFICATIONS (continued)
DYNAMIC CHARACTERISTICS AND TIMING
(TA = -40°C to +85°C, VDD = recommended range unless otherwise noted.)
PARAMETER
CONDITION
MIN
NOM
MAX
UNIT
QAM/DPSK Modulator
Carrier Suppression
Output Amplitude
Measured at TXA
35
dB
TX scrambled marks
ATT = 0100 (default)
-11.5
-10.0
-9
dBm0
FSK Modulator/Demodulator
Output Freq. Error
CLK = 11.0592 MHz
-0.31
-11.5
+0.20
-9
%
Transmit Level
ATT = 0100 (Default)
-10.0
dBm0
Transmit Dotting Pattern
TXA Output Distortion
All products through BPF
-45
dB
%
Output Bias Distortion at
RXD
Dotting Pattern measured at RXD
Receive Level -20 dBm, SNR 20 dB
-10
+10
Output Jitter at RXD
Integrated for 5 seconds
Integrated for 5 seconds
-15
-17
+15
+17
%
%
Sum of Bias Distortion
and Output Jitter
Answer Tone Generator (2100 or 2225 Hz)
Output Amplitude
ATT = 0100 (Default Level)
Not in V.21
-11.5
-10
-9
dBm0
dB
Output Distortion
DTMF Generator
Freq. Accuracy
Output Amplitude
Output Amplitude
Twist
Distortion products in receive band
Not in V.21
-40
-0.03
-10
-8
+0.25
-8
%
Low Band, ATT = 0100, DPSK Mode
High Band, ATT = 0100, DPSK Mode
High-Band to Low-Band, DPSK Mode
Refer to Performance Curves
In Call Init mode
dBm0
dBm0
dB
-6
1.0
-43
2.0
3.0
-3.0
Receiver Dynamic Range
Call Progress Detector
Detect Level
dBm0
460 Hz test signal
-34
0
dBm0
dBm0
ms
Reject Level
-40
25
25
Delay Time
-70 dBm0 to -30 dBm0 STEP
-30 dBm0 to -70 dBm0 STEP
Hold Time
ms
NOTE: Parameters expressed in dBm0 refer to the following definition:
0 dB loss in the Transmit path from TXA to the line.
2 dB gain in the Receive path from the line to RXA.
Refer to the Basic Box Modem diagram in the Applications section for the DAA design.
Page: 20 of 31
© 2005, 2008 TERIDIAN Semiconductor Corporation
Rev 7.1
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
