TCM1520A Datasheet, PDF (2/7 Pages) Texas Instruments – RING DETECTOR

TCM1520A
DUAL DIFFERENTIAL COMPARATORS
SCTS005B – OCTOBER 1984 – REVISED DECEMBER 1990
functional block diagram
AC INPUT ¹
Ring-Signal
Voltage Input
Section
AC INPUT ⁸
Transient
Protection 45 V
1A
Section
High-Input Impedance/
Antitapping Section
5 _{BELL TAPPING}
SENSE
200 Ω
6.8 V
8 kΩ
Current
Sensor
Vref
6 _{C FILTER}
Regulated
Voltage
Output Section
5-V Series
Regulator
18 kΩ
4 _{5-V OUTPUT}
2 _INVERTING
OUTPUT
3
COMMON
7
COMMON
absolute maximum ratings over operating free-air temperature range (unless otherwise noted)^†
Continuous supply voltage at C FILTER (see Note 1) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Continuous differential input voltage, V_ID (AC INPUT) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 V
Continuous output current at 5-V OUTPUT, I_O . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12 mA
Continuous SCR on-state input current . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 200 mA
SCR on-state input current, I_I(on) (duration ≤ 200 µs) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 900 mA
Continuous total dissipation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . See Dissipation Rating Table
Operating free-air temperature range, T_A . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 105°C
Storage temperature range . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . – 40°C to 125°C
Lead temperature 1,6 mm (1/16 inch) from case for 10 seconds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 260°C
† _{Stresses beyond those listed under “absolute maximum ratings” may cause permanent damage to the device. These are stress ratings only, and}
functional operation of the device at these or any other conditions beyond those indicated under “recommended operating conditions” is not
implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
NOTE 1: All voltage values, unless otherwise noted, are with respect to COMMON (pin 7).
PACKAGE
D
P
DISSIPATION RATING TABLE
TA = 25°C
POWER RATING
950 mW
OPERATING FACTOR
ABOVE TA = 25°C
7.6 mW/°C
1000 mW
8.0 mW/°C
TA = 85°C
POWER RATING
494 mW
520 mW
2
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