73K222BL
V.22, V.21, Bell 212A, 103 Single-Chip
Modem with Integrated Hybrid
DATA SHEET
DYNAMIC CHARACTERISTICS AND TIMING (continued)
PARAMETER
CONDITION
MIN
NOM
MAX
UNIT
CARRIER DETECT
Threshold
DPSK or FSK
Receive data
-48
15
2
-43
45
dBm0
ms
Delay Time
-70 dBm0 to -30 dBm0 STEP
Single tone detected
-30 dBm0 to -70 dBm0 STEP
Hysteresis
3.0
dB
Hold Time
10
24
ms
ANSWER TONE DETECTOR
Detect Level
Not in V.21 mode
-48
20
-42
45
dBm0
ms
Delay Time
-70 dBm0 to -30 dBm0 STEP
-30 dBm0 to -70 dBm0 STEP
Hold Time
10
30
ms
Detect Frequency Range
OUTPUT SMOOTHING FILTER
Output
-2.5
+2.5
%
TXA1 to TXA2, loaded as shown
in Figure 1 (2% THD)
±2.5
V
Spurious Frequency Components
Frequency = 76.8 kHz
Frequency = 153.6 kHz
TXA pin; 76.8 kHz
-39
-45
1.0
dBm0
dBm0
Clock Noise
mVrms
CARRIER VCO
Capture Range
Capture Time
Originate or Answer
-10
+10
100
Hz
ms
-10 Hz to +10 Hz Carrier
Frequency Change Assumption
40
30
RECOVERED CLOCK
Capture Range
% of frequency
center frequency
(center at 1200 Hz)
-625
+625
50
ppm
ms
Data Delay Time
Analog data in at RXA pin to
receive data valid at RXD pin
Page: 18 of 26
© 2005, 2008 TERIDIAN Semiconductor Corporation
Rev 7.2
TERIDIAN [ TERIDIAN SEMICONDUCTOR CORPORATION ]
