ia3222 integration, ia3222 Datasheet - Page 11

• Manufacturer Part Number: ia3222
• Description: Ia3222/ia3223 Ez Daa? Chipset With Analog Interface
• Manufacturer: integration

DC Characteristics
AC Characteristics
Loop-current sensor gain
Parameter
Logic input current
Logic input hysteresis
Logic output low voltage
Logic output high voltage
Ring-detection threshold
Voltage at AC
AC
AC
Pull-down resistance
Pull-up resistance
Power supply current
Symbol
tcdo
tcsdf
REF
REF
input resistance
input current
Parameter
Clock falling edge to Data Out valid from driven or floating state
Chip Select disabled to Data Out floating
Internal sampling rate based on internal clock
REF
pin
Clock
Clock
CS#
CS#
Data in
Data in
Data out
Data out
Normal headroom, TBR21 mode
All other headroom and impedance modes
Conditions
I
I
RTH[1:0] = 00
RTH[1:0] = 01
RTH[1:0] = 10
RTH[1:0] = 11
Pin left open
Small signal
Sink or source
ExtClk, OfHk inputs, V = 0.65 Vdd
LineStat open-drain output, V = 0.35 Vdd
Off hook, internal clock
Off hook, external clock
On hook
Power down, no external clock
OL
OH
= -4mA
= 4mA
X
1 (read)
Figure 2: Serial interface read-cycle timing diagram
A2
Floating
A1
A0
tcdo
DO3
tcdo
Min.
12.5
1.42
-10
0.8
10
15
20
42
80
80
DO2
Min.
67.2
X (don't care)
DO1
Typ.
1.50
0.95
1.15
240
7.9
6.2
3.4
60
10
Typ.
73.4
2
12
12
tcsdf
DO0
Max.
1.58
300
300
0.4
10
78
20
25
30
40
Max.
82.8
20
20
Floating
mV/mA
mV/mA
V
V
V
V
Unit
kHz
Unit
V
mV
mA
mA
mA
ns
ns
µA
RMS
RMS
RMS
RMS
kΩ
µA
kΩ
kΩ
µA
V
V
DD
Load = 50 pF
Load = 50 pF
IA3222/IA3223
Note
11