UPC2798 datasheet(10/24 Pages) NEC

10 / 24 page

Data Sheet P11998EJ3V0DS00

µµµµPC2798GR

TYPICAL CHARACTERISTICS (by measurement circuit 1, TA = 25 °C)

CIRCUIT CURRENT vs. SUPPLY VOLTAGE

no input

signal

VAGC = 0 V

Total

Mixer

+ AGC + VCO

Video Amp

VCC - Supply Voltage - V

–10

–20

–30

100

150

200

250

300

CONVERSION GAIN vs. INPUT FREQUENCY

CONVERSION GAIN vs. INTERMEDIATE FREQUENCY

fRF - Input Frequency - MHz

fOSC = fRF + 10 MHZ

POSC = –10 dBm

VCC1 = 5 V

VAGC = 4.0 V

VAGC = 2.6 V

VAGC = 0.0 V

–10

–20

–30

120

150

180

CONVERSION GAIN vs. AGC VOLTAGE

NOISE FIGURE vs. AGC VOLTAGE

fIF - Intermediate Frequency - MHz

VAGC - AGC Voltage - V

fRF = 45 MHZ

fOSC = 55 to 210 MHZ

POSC = –10 dBm

VCC1 = 5 V

VAGC= 4.0 V

VAGC= 2.6 V

VAGC= 0.0 V

VCC1 = 5 V

fRF = 100 MHZ

fOSC = 120 MHZ

POSC = –10 dBm

DSB mode

–10

VCC1 = 5 V

fRF = 45 MHZ

PRF = –60 dBm

fOSC = 50 MHZ

POSC = –10 dBm

OUTPUT POWER vs. INPUT POWER

–60

–50

–40

–30

–20

–10

Pin - Input Power - dBm

–10

–20

–30

–40

–50

–60

–70

–80

–90

VCC1 = 5 V

VAGC = 0 V

fRF1 = 44 MHZ

fRF2 = 46 MHZ

fOSC = 55 MHZ

POSC = –10 dBm

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