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SN761646 Datasheet(PDF) 9 Page - Texas Instruments

Part # SN761646
Description  DIGITAL TV TUNER IC
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

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SN761646
www.ti.com
SLES251 – NOVEMBER 2009
Mixer, Oscillator, IF Amplifier (DIF OUT)
VCC = 5 V, TA = 25°C, measured in Figure 20 reference measurement circuit at 50-Ω system, IF = 44 MHz,
IF filter characteristics: fpeak = 44 MHz (unless otherwise noted)
PARAMETER
TEST CONDITIONS
TYP
UNIT
GC4D
fin = 177 MHz
(1)
29
Conversion gain (mixer-IF amplifier), VHF-HIGH
dB
GC6D
fin = 467 MHz
(1)
29
GC7D
fin = 473 MHz
(1)
29
Conversion gain (mixer-IF amplifier), UHF
dB
GC9D
fin = 864 MHz
(1)
29
NF4D
fin = 177 MHz
9
Noise figure, VHF-HIGH
dB
NF6D
fin = 467 MHz
10
NF7D
fin = 473 MHz
10
Noise figure, UHF
dB
NF9D
fin = 864 MHz
12
CM4D
fin = 177 MHz
(2)
79
Input voltage causing 1% cross-modulation distortion,
dB
μV
VHF-HIGH
CM6D
fin = 467 MHz
(2)
79
CM7D
fin = 473 MHz
(2)
77
Input voltage causing 1% cross-modulation distortion, UHF
dB
μV
CM9D
fin = 864 MHz
(2)
77
VIFO4D
fin = 177 MHz
117
IF output voltage, VHF-HIGH
dB
μV
VIFO6D
fin = 467 MHz
117
VIFO7D
fin = 473 MHz
117
IF output voltage, UHF
dB
μV
VIFO9D
fin = 864 MHz
117
ΦPLVL4D
fin = 177 MHz
(3)
–85
Phase noise, VHF-HIGH
dBc/Hz
ΦPLVL6D
fin = 467 MHz
(4)
–77
ΦPLVL7D
fin = 473 MHz
(3)
–80
Phase noise, UHF
dBc/Hz
ΦPLVL9D
fin = 864 MHz
(4)
–77
(1)
IF = 44 MHz, RF input level = 70 dB
μV
(2)
fundes = fdes ±6 MHz, Pin = 70 dBμV, AM 1 kHz, 30%, DES/CM = S/I = 46 dB
(3)
Offset = 1 kHz, CP current = 350
μA, reference divider = 128, crystal = 8 MHz
(4)
Offset = 1 kHz, CP current = 900
μA, reference divider = 128, crystal = 8 MHz
Copyright © 2009, Texas Instruments Incorporated
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