NTE1557 查看數據表（PDF） - NTE Electronics
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NTE1557 Datasheet PDF : 3 Pages
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Electrical Characteristics: (TA = +25°C, VCC = 5.5V, unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
FM Section (f = 10.7MHz, fm = 1kHz, ∆f = ±75kHz)
Quiescent Circuit Current
ICC Vi = 0
Input Limiting Sensitivity
Vi(lim) VO (Vi = 100dBµ) –3dB
Detector Output Voltage
VO VI = 100dBµ
Total Harmonic Distortion
THD Vi = 100dBµ
AM Rejection Ratio
AMR Vi = 100dBµ
Signal to Noise Ratio
S/N Vi = 100dBµ
Signal Meter Output
VM Vi = 100dBµ
Residual Noise
VN VO (AF) (Vi = 100dBµ)
Muting Attenuation
M(att) VI = 37dBµ, Mute SW on
AM Section (f = 455kHz, fm = 1kHz, 30% Mod)
7 11 16.5 mA
– 33 38 dBµ
180 245 310 mV
– 0.3 1.0 %
50 60 – dB
72 83 – dB
1.05 1.5 2.05 V
– 45 – dB
– 35 – dB
Quiescent Circuit Current
Maximum Sensitivity
Detector Output Voltage
Total Harmonic Distortion
Signal to Noise Ratio
Signal Meter Output
Input Impedance (Pin 16)
ICC
Vi(sen)
Vo
THD
S/N
VM
Ri
Vi = 0
VO (AF) = 10mV
Vi = 74dBµ
Vi = 74dBµ
Vi = 100dB
Vi = 74dBµ
VI = 100dBµ
Pin 16 0.8–0.9VDC
– 8 – mA
– 29 – dBµ
45 65 85 mV
– 0.3 2.0 %
– 0.7 3.5 %
45 55 – dBµ
1.2 1.4 1.6 V
1.45 2.12 2.8 kΩ
Pin Connection Diagram
1st IF Amp Input (FM) 1
1st IF Decouple (FM) 2
VCC (FM) 3
1st IF Amp Output (FM) 4
GND 5
2nd IF Amp Input (FM) 6
Voltage Regulator 7
Phase Shifter (FM) 8
16 1st IF Amp Input (AM)
15 AGC Decouple
14 2nd IF Amp Input (AM)
13 GND
12 Detector Output
11 VCC
10 Center Meter
9 FM Output
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