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PDF TA1395FNG Data sheet ( Hoja de datos )
| Número de pieza | TA1395FNG | |
| Descripción | Mixer / Oscillator and PLL IC | |
| Fabricantes | Toshiba | |
| Logotipo |  |
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TA1395FNG
omTOSHIBA BIPOLAR LINEAR INTEGRATED CIRCUIT SILICON MONOLITHIC
heet4U.c TA1395FNGMixer/Oscillator and PLL IC for TV/VCR Tuner
w.DataSThe TA1395FNG is a tuner IC for TV and VCR applications that
wintegrates a PLL block and mixer, oscillator and IF amplifier on a
wsingle chip.
The control data of the PLL block conforms to I²C-bus formats.
Small flat package: SSOP24 (0.65 mm pitch)
U.comFeatures
z Vcc: 5V typ.
Weight: 0.09 g (typ.)
t4z Two-band mixer
z Two-band oscillator
z IF output driver
ez Asymmetrical IF output
z I²C bus format control
ez 33-V high voltage tuning amplifier built-in
hz Three-bit bandswitch drive transistor
z Frequency steps: 31.25 kHz, 50 kHz, 62.5 kHz (when a 4 MHz crystal is used)
z Four-programmable chip address
Sz Power on reset circuit
taz Automatic changeover between 1/4 and 1/2 prescaler through data input
z Standby mode
z Package: Pb-free
.DaPower on reset status
wz Frequency step: 62.5 kHz
z Charge pump current: Low
wz Counter data: ALL [ 0 ]
z Band driver: OFF
wz Tuning amplifier: OFF (charge pump is sink mode)
z Local oscillator and mixer: UHF mode
.comnote1: This device is easy to be damaged by high voltage or electric fields. In regards to this, please handle with care.
et4Unote2: Install the product correctly. Otherwise, it may result in break down, damage and/or degration to the product or
www.DataSheequipment.
1 2005/05/20
1 page  
Pin No. Pin Name.
Function
Crystal oscillator input pin.
14 Crystal Input
A 4-MHz crystal is used.
14
Interface
TA1395FNG
Vcc
GND
15 NF
50
Be sure to connect a resistance (of
16
about 33 k ) between pin 16 and the
33-V external power supply for tuning.
To prevent abnormal oscillation,
connect between pin 16 and GND a
capacity element that does not affect
a PLL.
16 Vt Output
15
Vcc
50 50
GND
IF signal output pin
17
IF Output
Asymmetrical output type.
Output impedance is about 75 .
18 Vcc Power supply pin
19
GND 3
Ground pin
Vcc
17
GND
5 2005/05/20
5 Page 
Test Conditions
Conversion Gain (see 1)
RF Input level = -40dBmW (untuned)
TA1395FNG
IF Output Power Level (see 2)
Measure IF output level when it is maximum level.
Conversion Gain Shift (see 3)
The conversion gain shift is defined as a change in conversion gain when supply voltage varies from Vcc = 5 V to 4.5 V or
from Vcc = 5 V to 5.5 V.
Noise Figure (see 4)
Noise figure meter used. Direct reading. (DSB)
Frequency Shift (the PLL is not operating) (see 5)
The frequency shift is defined as a change in oscillator frequency when supply voltage varies from Vcc = 5 V to 4.5 V or
from Vcc = 5 V to 5.5 V.
Switch On Drift (the PLL is not operating) (see 6)
It is frequency change of oscillator by three minutes on the basis of the three seconds back of an after a power supply.
1% Cross Modulation (see 7)
z fd = fp : (fd input level = -40dBmW)
z fud = fp 12MHz, 100 kHz AM30%
Input two signals, and increase the fud input level.
Measure the fud input level when the suppression level reaches 56.5dB.
C/S Beat (see 8)
z fp
z fs = fp + 4.5MHz
z fc = fp + 3.58MHz
fp = fs = fc : 3 signal are same level input
Measure the suppression level when the PIF(45.75MHz) level is -10dBmW output.
Ch Beat (see 9)
*Ch5 beat
z fp = 77.25MHz
z fud = 83.25MHz
Lo = 123MHz tuning
Beat frequency = fud 2 – Lo = 43.5MHz
fp = fud : 2 signal are same level input
Measure the suppression level when the PIF(45.75MHz) level is -10dBmW output.
*Ch6 beat
z fp = 83.25MHz
z fs = 87.75MHz
Lo = 129MHz tuning
Beat frequency = fp + fs – Lo = 42MHz
fp = fs : 2 signal are same level input
Measure the suppression level when the PIF(45.75MHz) level is -10dBmW output.
*ChA-5 beat
z fp = 91.25MHz
Lo = 137MHz tuning
Beat frequency = Lo – fp 2 = 45.5MHz
Measure the suppression level when the PIF(45.75MHz) level is -10dBmW output.
11 2005/05/20
11 Page | ||
| Páginas | Total 24 Páginas | |
| PDF Descargar | [ Datasheet TA1395FNG.PDF ] | |
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