NTE1635 NTE-1635 | ECG1635 ECG-1635 | NTE Electronics
NTE1635 IC Speaker Protector Voltage Temperature Overload
Formerly: ECG1635
NTE1635
Integrated Circuit
Speaker Protector/Voltage/Temperature/Overload
Description:
The NTE1635 is a monolithic integrated circuit in an 8-Lead SIP type package designed for use in
protecting power amplifiers and speakers in various amplifier and receiver applications.
Features:
- Built-In Relay Driver
- Single Power Source
- Wide Operating Supply Range: 25V to 60V
- Plus and Minus Voltage using One Pin (Both Pin3 and Pin4 Posses the Same Functions and
Detect Plus and Minus Voltage)
- AC Voltage Detector (Pin5)
- Circuit Protection by Plus Voltage Detection is Provided by Connecting D1 Diode Externally (Pin6)
- Relay-On Lag Time Adjustable by External Applications
- Short Relay-Off Time (25ms Typ Under the Standard External Applications)
Typical Applications:
- For Speaker Protection, use Pin3 (or Pin4) to Detect Setoff of Quiescent Output DC Voltage
and to Turn the Relay Off
- For Power Amplifier Protection, use Pin3 (or Pin4) with an External Thermo-Sensitive Device
to Detect the Temperature Increase and to Turn the Relay Off
- Power Amplifier can be Protected by Detecting Overload and Turning the Relay Off with Pin6
- In case of Overload Detection by Constant-Current or by Constant-Voltage Drive using an
External Diode D1, the Latch Mechanism keeps the Relay On until the Power is Switched Off
- For Prevention of Pop Noise at Power Off use Pin5. AC Voltage Disappeance is Immediately
Detected when the Amp´s Switch has been Off. This Minimizes the Relay-Off Time and thus
can Prevent Pop Noise Generated by Mute-Off Time Lag
Info as pdf-file
NTE-ECG replacement list as pdf-file
NTE-ECG diagrams
Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)
Total Power Disipation (TA = +70°C), PT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 400mW
Operating Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -20° to +70°C
Storage Temperature Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -55° to +125°C
Supply Voltage (Pin1), VCC(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60V
Supply Current (Pin1), I1(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 80mA
Supply Current (Pin3, Note 1), I3(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3mA
Supply Current (Pin4, Note 1), I4(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ±3mA
Supply Voltage (Pin5), V5(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . -10V
Supply Current (Pin6), I6(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 3mA
Supply Voltage (Pin7, Note 2), V7(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V
Supply Current (Pin7, Note 2), I7(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 25mA
Supply Voltage (Pin8), V8(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Less than Pin7
Supply Current (Peak, Pin8), I8(max) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 50mA
Note 1. Positive current denotes input current at Pin3 and Pin4, Negative current denotes output current
Note 2. V7(max) = 8V is derived when driven by a constant voltage source without any resistance.
When applying current to V7 throught a resistance VCC the maximum value of input current
to Pin7 should be used instead of the above values.
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