NTE1843 Datasheet, PDF (1/2 Pages) NTE Electronics – Integrated Circuit FM Front End

NTE1843
Integrated Circuit
FM Front End
Description:
The NTE1843 is an integrated circuit in a 9–Lead SIP type package designed for use in FM front–end
applications. Typical applications include portable radio and radio cassettes.
Compared with conventional types, supply voltage dependence, overload characteristics and spuri-
ous radiation characteristics are improved.
Features:
D Wide Supply Voltage Range: V_CC = 1.6V to 6.0V
D Excellent Supply Voltage Dependence of Loacl Oscillator: Oscillator Stop V_CC = 0.9V Typ
D Improved Inter–Modulation Charactristics by Double Balanced Type Mixer Circuit
D Low Spurious Radiation
D Built–In Clamping Diode for the Local Oscillator Output
Absolute Maximum Ratings: (T_A = +25°C unless otherwise specified)
Supply Voltage, V_CC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8V
Power Dissipation, P_D . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 500mW
Derate Above 25°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4mW/°C
Operating Temperature Range, T_opr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –25° to +75°C
Storage Temperature Range, T_stg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +150°C
Electrical Characteristics: (T_A = +25°C, V_CC = 5V, f = 83MHz, f_m = 1kHz, ∆f = 22.5kHz dev. unless
otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Supply Current
–3dB Limiting Sensitivity
Quiescent Sensitivity
Conversion Gain
Local OSC Voltage
Parallel Input Resistance (Pin1 Impedance)
Parallel Output Resistance (Pin3 Impedance)
Parallel Output Capacitance (Pin3 Impedance)
Parallel Input Resistance (Pin4 Impedance)
Parallel Input Capacitance (Pin4 Impedance)
Parallel Output Resistance (Pin6 Impedance)
Parallel Output Capacitance (Pin6 Impedance)
Local OSC Stop Voltage
I_CC
V_in(lim)
Q_S
G_C
V_OSC
r_ip1
r_op3
c_op3
r_ip4
c_ip4
r_op6
c_op6
V_stop
V_IN = 0
f_OSC = 60MHz
f = 83MHz
f = 10.7MHz
– 5.2 8.0 mA
– 3.0 7.0 dBµ
– 11 – dBµ
– 31 – dB
150 230 350 mV_rms
– 57 –
Ω
–
25
–
kΩ
– 2.0 –
pF
– 2.7 –
kΩ
– 3.3 –
pF
– 100 0
kΩ
– 4.8 –
pF
– 0.9 1.3 V