73K222BL
V.22, V.21, Bell 212A, 103 Single-Chip
Modem with Integrated Hybrid
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
DPSK MODULATOR
Carrier Suppression
FIGURE 1
Measured between TXA1 and
TXA2
55
dB
Output Amplitude
TX scrambled marks
-11.5
-10.0
-9
dBm0
FSK MODULATOR/DEMODULATOR FIGURE 1
Output Frequency Error
Transmit Level
CLK = 11.0592 MHz
-0.35
-11.5
+0.35
-9
%
Transmit Dotting Pattern
-10.0
-60
dBm0
DB
Harmonic Distortion in
700-2900 Hz band
THD in the alternate band
DPSK or FSK
-50
Output Bias Distortion
Transmit Dotting Pattern in ALB
@ RXD
±8
%
%
Total Output Jitter
DTMF GENERATOR
Frequency Accuracy
Output Amplitude
Output Amplitude
Twist
Random Input in ALB @ RXD
FIGURE 1
-15
+15
-0.25
-10
-8
+0.25
-8
%
Low Tone , DPSK Mode
High Tone , DPSK Mode
-9
-7
dBm0
dBm0
dB
-6
High-Tone to Low-Tone,
DPSK Mode
1.0
2.0
3.0
Long Loop Detect
Dynamic Range
CALL PROGRESS DETECTOR
Detect Level Range
Reject Level
DPSK or FSK
-38
-28
-3
dBm0
dB
Refer to Performance Curves
45
2-Tones in 350 - 600 Hz band
2-Tones in 350 - 600 Hz band
-70 dBm0 to -30 dBm0 STEP
-30 dBm0 to -70 dBm0 STEP
-38
-43
27
27
2
dBm0
dBm0
ms
Delay Time
80
80
Hold Time
ms
Hysteresis
dB
TXA1
NOTE: Parameters expressed in dBm0 refer to
signals at the telephone line, i.e., across
R2 in Figure 1. All units in dBm0 are
measured at the line input to the
transformer. The interface circuit
(Figure 1) inserts an 8 dB loss in the
transmit path (TXA1 - TXA2 to line), and
a 3 dB loss in the receive path (line to
RXA).
R1
600
Ω
MIDCOM
671-8001
RXA
R2
600
C
0.033 µf
1:1
600
TXA2
(NOMINAL TELEPHONE
LINE IMPEDANCE)
Ω
FIGURE 1: Analog Interface Hybrid Loading
Page: 17 of 26
© 2005, 2008 TERIDIAN Semiconductor Corporation
Rev 7.2
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
