TCM1520A Datasheet, PDF (3/7 Pages) Texas Instruments – RING DETECTOR

TCM1520A
RING DETECTOR
SCTS005B – OCTOBER 1984 – REVISED DECEMBER 1990
recommended operating conditions
MIN MAX UNIT
Input voltage, VIrms (f = 15.3 Hz to 68 Hz) (see Note 2)
Operating free-air temperature, TA
40 150 V
– 40
85 °C
NOTE 2: Input voltage is applied to AC INPUT (pins 1 and 8) through a series 2.2-kΩ ± 10% resistor and a 0.47-µF ± 10% capacitor. (see
Figures 1, 4, and 5.)
electrical characteristics over recommended operating free-air temperature range, R_L = open,
C_(fltr) = 10 µF (unless otherwise noted)
detector section
PARAMETER
TEST CONDITIONS†
MIN TYP‡ MAX UNIT
V(BR) _CEX
Collector-emitter output breakdown voltage,
INVERTING OUTPUT
VID ≤ 5 Vrms, IO = 5 µA
45
V
VOL
VIT ₊
VIT _–
Vhys
VI(on)
VO
ZI(off)
II(on)
Low-level output voltage, INVERTING OUTPUT
Positive-going input threshold voltage
Negative-going input threshold voltage
Hysteresis (VIT ₊ – VIT _–)
Shunt voltage, C FILTER
On-state input current, SCR
Output voltage, 5-V OUTPUT
Standby input impedance
Impedance when ringing
On-state input current, SCR (see Note 4)
VID = 25 Vrms, IO = 1.6 mA
6
IID = 10 mA
38
See Note 3
50
VID = 40 V,
RL = 10 kΩ
4.25
VIrms = 3 V,
f ≤ 20 kHz
VIrms = 40 V, f = 16 Hz
VIrms = 130 V, f = 20 Hz
See Note 3
55
1V
18
25 V
7
V
11
V
50 V
100 V
5.75 V
1
MΩ
30
kΩ
20
110 mA
II(hold)
Input holding current, SCR
See Note 3
100
µA
Operating current
VID = 40 V,
Output open
1 1.6 mA
† _{All characteristics are measured with a 2.2-kΩ resistor and a 0.47-µF capacitor connected at AC INPUT (pin 1) in series with the input signal,}
unless otherwise noted.
‡ _{All typical values are at TA = 25°C.}
NOTES: 3. These parameters are measured using pulse techniques (tw ≤ 200 µs, duty cycle ≤ 5%) with C FILTER grounded.
4. This is the input current required to turn on the SCR.
switching characteristics at 25°C operating free-air temperature, f = 20 Hz (unless otherwise noted)
ton Turn-on time
t(off) Turn-off time
PARAMETER
TEST CONDITIONS
VIrms = 40 V
VIrms = 40 V
VIrms = 60 V to 150 V
MIN TYP MAX UNIT
100
ms
175
ms
300
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