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參數(shù)資料
| 型號： | MC33121 |
| 廠商： | Motorola, Inc. |
| 英文描述： | LOW VOLTAGE SUBSCRIBER LOOP INTERFACE CIRCUIT |
| 中文描述： | 低電壓用戶環(huán)路接口電路 |
| 文件頁數(shù)： | 2/32頁 |
| 文件大小： | 570K |
| 代理商： | MC33121 |
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MC33121
2
MOTOROLA
MAXIMUM RATINGS
Characteristic
Symbol
Value
Unit
Supply Voltage
(with respect to VCC)
(with respect to VDG)
VEE
VDD
– 60, + 0.5
– 0.5, + 7.0
Vdc
Voltage
@ PDI, (with respect to VDG)
@ CP, CN
EP, TSI
BP
RSI, EN
BN
Vin
– 0.5, + 7.0
VEE – 0.5, VCC + 0.5
VCC – 7.0, VCC + 0.5
VCC – 14, VCC + 0.5
VEE – 0.5, VCC + 14
VEE – 1.0, VEE + 21
Vdc
Junction Temperature
TJ
Tstg
150
°
C
Storage Temperature
– 65 to + 150
°
C
* Devices should not be operated at these limits. The “Recommended Operating Conditions” table
provides for actual device operation.
RECOMMENDED OPERATING CONDITIONS
Characteristic
Symbol
Min
Typ
Max
Unit
Supply Voltage
(with respect to VCC)
(with respect to VDG)
VEE
VDD
– 42
+ 4.5
– 24
+ 5.0
– 21.6
+ 5.5
Vdc
(with respect to VCC)
(with respect to VCC)
(with respect to VAG)
VAG
VDG
– 3.0
– 3.0
– 3.0
0
0
0
+ 10
+ 7.0
+ 10
(with respect to VEE)
(with respect to VCC and VAG)
VDD
—
3.5
—
—
47.5
—
Loop Current
IL
15
—
50
mA
PDI Input Voltage
VPDI
0
—
VDD
Vdc
Sink Current
ST1
ST2
IST1L
IST2L
0
0
—
—
1.0
1.0
mA
Transmit Signal Level at Tip & Ring
Receive Signal Level at VRX
STX
SRX
– 48
– 48
—
—
+ 3.0
+ 3.0
dBm
Loop Resistance
VEE = – 42 V
VEE = – 24 V
RL
0
0
—
—
2.0 k
800
External Transistor Beta
Hfe
TA
40
—
500
A/A
Operating Ambient Temperature (See text for derating)
– 40
—
+ 85
°
C
All limits are not necessarily functional concurrently.
ELECTRICAL CHARACTERISTICS
(VEE = – 24 V, VDD = + 5.0 V, unless otherwise noted. VCC = VAG = VDG = 0 V, TA = 25
°
C, see Figure 1.)
Characteristic
POWER SUPPLIES
Symbol
Min
Typ
Max
Unit
VEE Current
On Hook (RL > 10 M
, VEE = – 42 V)
Off Hook (RL = 0
, VEE = – 42 V)*
VDD Current
On Hook (RL > 10 M
, VDD = + 5.5 V)
Off Hook (RL = 0
, VDD = + 5.5 V)
IEEN
IEEF
IDDN
IDDF
– 2.7
– 72
—
4.0
– 1.0
– 55
1.4
7.0
—
– 41
2.7
14
mA
VEE Ripple Rejection
f = 1.0 kHz, @ VTX (4–wire)
f = 1.0 kHz, @ Tip/Ring (2–wire)
VDD Ripple Rejection
f = 1.0 kHz, @ VTX (4–wire)
f = 1.0 kHz, @ Tip/Ring (2–wire)
PSRR
40
40
37
37
62
52
52
48
—
—
—
—
dB
* Includes loop current.
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