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NE612A Datasheet(PDF) 2 Page - NXP Semiconductors

Part # NE612A
Description  Double-balanced mixer and oscillator
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Manufacturer  PHILIPS [NXP Semiconductors]
Direct Link  http://www.nxp.com
Logo PHILIPS - NXP Semiconductors

NE612A Datasheet(HTML) 2 Page - NXP Semiconductors

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Philips Semiconductors
Product specification
NE/SA612A
Double-balanced mixer and oscillator
1990 Sep 17
2
ABSOLUTE MAXIMUM RATINGS
SYMBOL
PARAMETER
RATING
UNIT
VCC
Maximum operating voltage
9
V
TSTG
Storage temperature
-65 to +150
°C
TA
Operating ambient temperature range
NE
SA
0 to +70
-40 to +85
°C
AC/DC ELECTRICAL CHARACTERISTICS
TA=25°C, VCC = 6V, Figure 3
SYMBOL
PARAMETER
TEST CONDITION
LIMITS
UNIT
SYMBOL
PARAMETER
TEST CONDITION
Min
Typ
Max
UNIT
VCC
Power supply voltage range
4.5
8.0
V
DC current drain
2.4
3.0
mA
fIN
Input signal frequency
500
MHz
fOSC
Oscillator frequency
200
MHz
Noise figured at 45MHz
5.0
dB
Third-order intercept point at 45MHz
RFIN=-45dBm
-13
dBm
Conversion gain at 45MHz
14
17
dB
RIN
RF input resistance
1.5
k
CIN
RF input capacitance
3
pF
Mixer output resistance
(Pin 4 or 5)
1.5
k
DESCRIPTION OF OPERATION
The NE/SA612A is a Gilbert cell, an oscillator/buffer, and a
temperature compensated bias network as shown in the equivalent
circuit. The Gilbert cell is a differential amplifier (Pins 1 and 2) which
drives a balanced switching cell. The differential input stage
provides gain and determines the noise figure and signal handling
performance of the system.
The NE/SA612A is designed for optimum low power performance.
When used with the NE614A as a 45MHz cordless phone/cellular
radio 2nd IF and demodulator, the NE/SA612A is capable of
receiving -119dBm signals with a 12dB S/N ratio. Third-order
intercept is typically -15dBm (that’s approximately +5dBm output
intercept because of the RF gain). The system designer must be
cognizant of this large signal limitation. When designing LANs or
other closed systems where transmission levels are high, and
small-signal or signal-to-noise issues not critical, the input to the
NE/SA612A should be appropriately scaled.


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