SN761672ADAR Datasheet, PDF (8/18 Pages) Texas Instruments – TV/VCR TUNER IC

SN761672A
TV/VCR TUNER IC
SLLS437 – JANUARY 2001
electrical characteristics (continued)
mixer, oscillator, IF amplifier (V_CC 5 V, T_A = 25°C, measured in reference measurement circuit at 50 W system,
IF filter characteristics: f_peak = 43 MHz) (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
G(c1)
G(c3)
Conversion gain (mixer ~ IF amplifier, VHF-low
fin = 59 MHz (see Note 2)
fin = 130 MHz
20
23
26
dB
20
23
26
G(c4)
G(c6)
Conversion gain (mixer ~ IF amplifier, VHF-high
fin = 136 MHz (see Note 2)
fin = 364 MHz
20
23
26
dB
20
23
26
G(c7)
G(c9)
Conversion gain (mixer ~ IF amplifier, VHF-UHF
fin = 370 MHz (see Note 2)
fin = 804 MHz
22
25
28
dB
20
23
26
NF1
Noise figure VHF-low
NF3
NF4
Noise figure VHF-low
NF6
NF7
Noise figure UHF
NF9
fin = 55.25 MHz
fin = 127.25 MHz
fin = 133.25 MHz
fin = 361.25 MHz
fin = 367.25 MHz
fin = 801.25 MHz
9.5
dB
9.5
10
dB
10
9
dB
10
CM1
CM3
1% cross modulation distortion VHF-low
fin = 55.25 MHz (see Note 3)
fin = 801.25 MHz
91
dBµV
91
CM4
CM6
CM7
CM9
V(IFO1)
V(IFO3)
1% cross modulation distortion VHF-high
1% cross modulation distortion UHF
IF output voltage VHF-low
fin = 133.25 MHz (see Note 3)
fin = 361.25 MHz
fin = 367.25 MHz (see Note 3)
fin = 801.25 MHz
fin = 55.25 MHz (see Note 4)
fin = 127.25 MHz
91
dBµV
91
88
dBµV
88
117
dBµV
117
V(IFO4) _{IF output voltage VHF-high}
V(IFO6)
fin = 133.25 MHz (see Note 4)
fin = 361.25 MHz
117
dBµV
117
V(IFO7)
V(IFO9)
IF output voltage UHF
Prescaler beat (see Note 5)
fin = 367.25 MHz (see Note 4)
fin = 801.25 MHz
117
dBµV
117
25 dBµV
NOTES: 2. IF = 43 MHz, RF input level = 80 dB µV
3. f(undes) = f(des) ±6 MHz, pin = 80 dBµV, AM 1 kHz, 30%, DES/CM=S/I=46 dB
4. IF = 45.75 MHz
5. Design parameter, not tested
8
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