NTE744 PDF даташит
Спецификация NTE744 изготовлена «NTE Electronics» и имеет функцию, называемую «Integrated Circuit RF/IF Amp». |
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Детали детали
Номер произв | NTE744 |
Описание | Integrated Circuit RF/IF Amp |
Производители | NTE Electronics |
логотип |
3 Pages
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NTE744
Integrated Circuit
RF/IF Amp
Description:
The NTE744 is a monolithic silicon integrated circuit that provides an rf amplifier, if amplifier, mixer,
oscillator, AGC detector, and voltage regulator on a single chip. It is intended for use in super–hetero-
dyne AM radio receiver applications particularly in automobiles. The NTE744 is supplied in a 14–lead
dual–in–line plastic package and operates over the temperature range of –55° to 125°C.
Features:
D Low–noise, low–Rb, rf stage in cascode connection–eliminates Miller–Effect regeneration and
allows controlled power rise by the choice of external components.
D Mixer–oscillator stage with internal feedback–eliminates need for tapped or multi–winding os-
cillator coils
D Cascode if amplifier with controlled output impedance and negligible Miller Effect–eliminates
regeneration and selectivity skewing
D Frequency–counter AGC circuit–allows control of AGC response by selection of the coupling
capacitor.
D Integral regulation with built–in surge protection
D Separately accessible amplifiers
Absolute Maximum Ratings:
DC Supply Voltage (Pin3), V+ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9V
DC Supply Voltage (IF Output, Pin6) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40V
DC Supply Voltage (RF Output, Pin13) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V
DC Supply Voltage (Mixer Output, Pin14) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 20V
DC Current (Pin3) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35mA
Power Dissipation (Up to TA = +55°C), PD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 750mW
Derate Above TA = 55°C . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6.67mW/°C
Operating Ambient Temperature Range, Topr . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –55° to +125°C
Storage Temperatur Range, Tstg . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –65° to +150°C
Lead Temperature (During Soldering, 1/16” (1.59mm)from case, 10sec max), TL . . . . . . . . +265°C
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Electrical Characteristics: (TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min Typ Max Unit
Static Characteristics
DC Voltage
At Pin1, Pin4
V1, V4
At Pin2, Pin3, Pin14
V2, V3, V14
At Pin5
V5
At Pin6
V6
At Pin7
V7
At Pin8, Pin9
V8, V9
At Pin10, Pin11
V10, V11
At Pin12
V12
At Pin13
V13
DC Current
Into Pin1, Pin4, Pin5, Pin7,
I1, I4, I5, I7,
Pin8, Pin9, Pin10, Pin11, Pin12 I8, I9, I10, I12
– 4.7 –
– 6.8 –
– 0.25 –
– 12 –
– 0.76 –
–0–
– 0.71 –
– 0.71 –
– 4.0 –
V
V
V
V
V
V
V
V
V
– 0 – mA
Into Pin2
Into Pin3
Into Pin6
Into Pin13
Into Pin14
Performance Characteristics
I2
I3
I6
I13
I14
– 1.2 –
– 15 –
– 4.3 –
– 4.5 –
– 0.17 –
mA
mA
mA
mA
mA
Sensitivity
Signal–to–Noise Ratio
Overload Distortion
Input Signal to Dummy Antenna at
– 2.3 – µV
fIN = 1MHz, 30% AM Modulation at
fMOD = 400Hz, for 11mV Output at VO
S/N Ratio of Output at VO with Modulation 34 43 – dB
ON & the OFF, Input Signal = 100µV,
30% AM Modulation at fMOD = 400Hz
Input Signal set at 1MHz, 90% AM
Modulation, Distortion at VO must be
≤ 10%
160k 400k
–
µV
Pin Connection Diagram
Mixer Input 1
OSC Tank 2
VCC 3
Mixer Bypass 4
AGC Drive 5
IF Output 6
IF Input 7
14 Mixer Output
13 RF Output
12 RF Input
11 RF Bypass
10 AGC Capacitor
9 RF GND
8 Substrate & IF Amp GND
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14 8
17
.785 (19.95) Max
.300 (7.62)
.200 (5.08)
Max
.100 (2.45)
.600 (15.24)
.099 (2.5) Min
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