NTE1580

Integrated Circuit

IF Amp & Detector

Description:

The NTE1580 is an IF amplifier in a 14–Lead DIP type package with a symmetrical FM demodulator

and an AF amplifier with adjustable output voltage. The AF amplifier is also provided with an output

for volume control and an input for VCR operation.

The input and output of the NTE1580 are especially designed for LC–circuits, but the input can also

be used with a ceramic filter.

Absolute Maximum Ratings:

18V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

6V

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

400mW

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1k

Ω

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–15

° to +70°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40

° to +125°C

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Note 1. Supply voltage operating range is 10V to 18V

Parameter

Symbol

Test Conditions

Min

Typ

Max

Unit

IF Voltage Gain

–

68

–

dB

Input Voltage Starting Limiting

–

30

60

µV

IF Output Voltage at Limiting

(Peak–to–Peak)

–

250

–

mV

AM Suppression

α

50

60

–

dB

IF Residual Voltage Without De–Emphasis

Pin12

–

30

–

mV

Pin8

–

20

–

mV

AF Voltage Gain

–

7.5

–

AF Adjustment

20

28

36

dB

AF Output Voltage Control Range

70

85

–

dB

Adjustment Resistor

Note 2

1 to 10

k

Ω

DC Voltage Portion at the AF Outputs

Pin12

–

5.6

–

V

Pin8

–

4.0

–

V

Note 2. Pin5 must be connected to Pin4, when volume control adjustment is not applicable.