NTE NTE1441 Datasheet

NTE1441

Integrated Circuit

FM IF Amplifier, Detector

Function:

D IF Amplification, Limiter
D Quadrature Detector
D AF Preamplifier
D Muting at Weak Input
D Muting at the Detuning

Features:

D High Limiting Sensitivity: 18µV Typ.
D Low Distortion: 0.05% Typ Determined by the Linearity of Phase Characteristics in Phase

Shifting Circuit

D High Demodulation Output: 330mV

rms

Typ

D High S/N Ratio: 78.5dB Typ
D Muting at Detuning with Little Shock Noise
D Single Meter Drive Output Proportional with the Input Signal Level dB
D Detuning Muting Band having Good Symmetrics
D Tuning Meter Driving Output having Wide Swing Width
D Delay AGC Drive Output for Front End
D Constant Voltage Circuit is Built–In: Operating Voltage Range = 9V to 14V
D Muting Characteristics Between Adjacent Stations are Distinguished

D Signal Meter Drive Output
D AFC Tuning Meter Drive Output
D Delay AGC Output
D Inverting Circuit for Muting Drive Voltage
D IF Amplifier Stop Circuit

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)

Maximum Supply Voltage (Pin11), VCCmax 16V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Maximum Input Voltage (Pin1–2), V
Maximum Supply Current (Pin11), I

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

I

CC

±1V

Maximum Flow–In Current

Pin15, I
Pin16, I

15
16

Maximum Flow–Out Current

Pin10, I
Pin12, I
Pin13, I
Pin15, I

10
12
13
15

Allowable Power Dissipation, PDmax 650mW. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Operating Temperature Range, T
Storage Temperature Range, T

stg

opr

–20° to +70°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

–40° to +125°C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Recommended Operating Condition: (TA = +25°C unless otherwise specified)
Supply Voltage, V

CC

P–P

40mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

1mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

2mA. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

12V. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

Electrical Characteristics: (TA = +25°C, VCC = 12V, f = 10.7MHz unless otherwise specified)

Parameter Symbol Test Conditions Min Typ Max Unit

Quiescent Current I
Current Dissipation I
Demodulated Output V

CCO

CC

O

VIN = 100dBµ – 26.5 33.0 mA
VIN = 100dBµ, 400Hz – 100% MOD 240 330 460 mV

– 22 30 mA

Signal–to–Noise Ratio S/N VIN = 100dBµ, 400Hz – 100% MOD 72.0 78.5 – dB
Input Limiting Voltage V

IN(lim)VO

3dB down, 400Hz – 100% MOD – 25 31 dBµ
Total Harmonic Distortion THD VIN = 100dBµ, 400Hz – 100% MOD – 0.05 0.3 %
Muting Sensitivity V
Muting Attenuation Mute
Muting Bandwidth BW

IN(mute)V12

(att)V5

(mute)VIN

AM Rejection Ratio AMR VIN = 100dBµ, FM: 400Hz – 100% MOD,

= 1.4V 23 29 35 dBµ

= 2V, VIN = 100dBµ, 400Hz – 100% MOD 60 65 – dB

= 100dBµ, V12 = 1.4V 140 220 370 kHz

45 60 – dB

AM: 1kHz – 30% MOD

Muting Driving Output V

Quiescent 4.0 4.9 6.0 V

12

VIN = 100dBµ 0 0 0.3 V

Signal Meter Driving Output V

Quiescent 0 0 0.1 V

13

VIN = 70dBµ 1.9 3.0 4.2 V
VIN = 100dBµ 4.5 5.5 – V

AGC Output V

Quiescent 4.2 5.0 5.5 V

15

VIN = 100dBµ 0 0 0.5 V

rms

IF OFF Current I
Voltage of Muting Operation V
Offset Voltage V

15(off)

16(mute)VIN

6–10B

V

7–10B

Pin Voltage V

V
V
V
V

Quiescent, V

≤ 20mV 10 35 60 µA

8–10

= 100dBµ, V12 = 1.4V 0.7 0.84 1.0 V
Quiescent, Pin6 – Pin10 –0.5 0 +0.5 V
Quiescent, Pin7 – Pin10, R
Quiescent – 2.6 – V

1

V

2

V

3

V

6

V

7

V

8
10
12
13
15

= 5.1k –0.25 0 +0.25 V

7–10

– 2.6 – V
– 2.6 – V
– 5.6 – V
– 5.6 – V
– 5.4 – V
– 5.6 – V
– 4.9 – V
– 0 – V
– 5.0 – V