參數(shù)資料
型號: T7531A
廠商: Lineage Power
元件分類: Codec
英文描述: 16-Channel Programmable Codec Chip Set(十六通道可編程編解碼器芯片組)
中文描述: 16通道可編程解碼器芯片組(十六通道可編程編解碼器芯片組)
文件頁數(shù): 24/44頁
文件大小: 772K
代理商: T7531A
24
Lucent Technologies Inc.
Data Sheet
February 1999
Codec Chip Set
T7531A/T7536 16-Channel Programmable
Electrical Characteristics
For all specifications: T
A
= –40
°
C to +85
°
C, V
DD
= 5 V
±
5%, unless otherwise noted. Typical values are for
T
A
= 25
°
C and V
DD
= 5 V. Input signal frequency is 1020 Hz, unless otherwise noted.
dc Characteristics
Table 8. Digital Interface
Table 9. Analog Interface
Parameter
Symbol
V
IL
V
IH
V
OL
V
OH
V
OHC
I
IL
I
IH
Test Conditions
TTL-compatible inputs
TTL-compatible inputs
I
L
= 10 mA
I
L
= –10 mA
I
L
= –320
μ
A
GND < V
IN
< V
IL
V
IH
< V
IN
< V
DD
Min
2.0
2.4
3.5
–10
Typ
Max
0.7
0.4
10
Unit
V
V
V
V
V
μ
A
μ
A
Input Voltage
Low
High
Low
High
Output Voltage
Input Current
Pins Without a
Pull-up or
Pull-down
Pins with a
Pull-up
Low
High
Low
High
I
IL
I
IH
GND < V
IN
< V
IL
V
IH
< V
IN
< V
DD
GND < V
IN
< V
IL
V
IH
< V
IN
< V
DD
UPDO, SDX –40
°
C to 0
°
C
UPDO, SDX 0
°
C to 85
°
C
–120
–2
10
μ
A
μ
A
Pins with a
Pull-down
Low
High
I
IL
I
IH
–10
2
120
μ
A
μ
A
Output Current in High-impedance
State
I
OZ
–30
–10
30
10
μ
A
μ
A
Parameter
Symbol
RVTX
RVRTX
Test Conditions
0.25 V < VTX < 4.75 V
2.3 V < VRTX < 2.5 V
Min
10
7
Typ
Max
Unit
M
k
Input Resistance
Input Resistance
(dependent on the setting
of the termination impedance)
Common-mode Reference Voltage
CMT Input Sink Current
Input Voltage Swing
Load Resistance at VRP and VRN
(differential)
Load Capacitance
Output Resistance
VVRTX
IVRTX
VVTX
RL
2.2
4.0
2.4
2.6
400
3.2
V
μ
A
Vp-p
k
2.3 V < VRTX < 2.5 V
CL
RO
CL from VRP or VRN to V
SSA
Digital input code corresponding to
0 dBm PCM code at 1.02 kHz
Digital pattern corresponding to idle
PCM code (
μ
-law)
Channel powered down
10
μ
A max dc load
RL = 100 k
differential maximum
receive gain
2
100
10
pF
Output Offset Voltage Between
VRP and VRN
Output Offset Voltage Between
VRP and VRN, Powerdown
Output Voltage Swing (differential)
VOS
–100
0
100
mV
VOSPD
–20
0
20
mV
VRSW
5.28
Vp-p
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