NTE1648 查看數據表（PDF） - NTE Electronics
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NTE1648 Datasheet PDF : 3 Pages
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Electrical Characteristics: (TA = +25°C, All voltage referenced to GND unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Operating Supply Voltage
Initiation Supply Voltage
Initiation Supply Current
Sustaining Voltage
Sustaining Current
Trigger Voltage
Trigger Current
VCC
VSI
ISI
VSUS
ISUS
VTR
ITR
–
Note 1
17
NTE1649–6.8k–Pin2 to GND, Note 1 1.4
Note 2
9.7
No Load, VCC = VSUS, Note 2
0.7
NTE1648 ONLY, VCC = 15V, Note 3 9.0
NTE1648 ONLY, Note 3
–
–
29
V
19
21
V
2.5 4.2 mA
11.0 12.0 V
1.4 2.5 mA
10.5 12.0 V
20.0 1000 µA
Note 5
Disable Voltage
Disable Current
Output Voltage High
VDIS
IDIS
VOH
NTE1648 ONLY, Note 4
NTE1648 ONLY, Note 4
VCC = 21V, I8 = –15mA,
Pin6 = 6V, Pin7 = GND
–
–
0.5
V
–40 –50
–
µA
17 19
21
V
Output Voltage Low
VOL
VCC = 21V, I8 = 15mA,
Pin6 = 6V, Pin7 = GND
–
–
1.6
V
Sink Current
High Frequency
Low Frequency
IIN (Pin3)
IIN (Pin7)
fH1
fH2
fL
Pin3 = 6V, Pin4 = GND
Pin7 = 6V, Pin6 = GND
R3 = 191k, C3 = 6800pf
R3 = 191k, C3 = 6800pf
R2 = 165k, C2 = 0.47µf
–
–
500 nA
–
–
500 nA
461 512 563 HZ
576 640 704 HZ
9
10
11
HZ
Note 1. Initiation supply voltage (VSI) is the supply voltage required to start the tone ringer oscillating.
Note 2. Sustaining voltage (VSUS) is the supply voltage required to maintain oscillation.
Note 3. VTR and ITR are the conditions applied to trigger in to start oscillation for VSUS ≤ VCC ≤ VSI.
Note 4. VDIS and IDIS are the conditions applied to trigger in to inhibit oscillation for VSI ≤ VCC.
Note 5. Trigger current must be limited to this value externally.
Pin Connection Diagram (NTE1648)
R1
R2
Low
4
3
Freq
OSC
C1
Power
1
Input
5
Supply
with
Hysteresis
7
High
Freq
OSC
C2
6
Amp
NOTE: C1, C2, R1, and
R2 are external parts
Output
8
2 Trigger Input
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