TDA6508 Datasheet, PDF (16/42 Pages) NXP Semiconductors – 3-band mixer/oscillator and PLL for terrestrial tuners

Philips Semiconductors
3-band mixer/oscillator and PLL for
terrestrial tuners
Product specification
TDA6508; TDA6508A;
TDA6509; TDA6509A
SYMBOL
PARAMETER
CONDITIONS
MIN. TYP.
G_v
voltage gain
TDA6508; TDA6509; IF output
loaded with 1.25 kΩ
f_RF = 157 MHz; see Fig.17
22
25
f_RF = 450 MHz; see Fig.17
22
25
TDA6508A; TDA6509A; IF output
loaded with 75 Ω
f_RF = 157 MHz; see Fig.18
18
21
f_RF = 450 MHz; see Fig.18
18
21
NF
noise figure
f_RF = 150 MHz; see Figs 12 and 13 −
8
f_RF = 300 MHz; see Figs 12 and 13 −
8
V_o
output voltage (causing 1% TDA6508; TDA6509
cross-modulation in channel) _{fRF = 154.25 MHz; see Fig.19}
114
117
f_RF = 447.25 MHz; see Fig.19
114
117
TDA6508; TDA6509A
f_RF = 154.25 MHz; see Fig.20
106
109
f_RF = 447.25 MHz; see Fig.20
106
109
V_i
input voltage (causing
f_RF = 447.25 MHz; note 2
pulling in channel at 750 Hz)
−
90
g_os
optimum source
f_RF = 150 MHz
conductance for noise figure _{fRF = 300 MHz}
−
0.9
−
1.5
g_i
input conductance
f_RF = 154.25 MHz
−
0.21
f_RF = 447.25 MHz
−
1.8
C_i
input capacitance
f_RF = 154.25 to 447.25 MHz
−
0.6
MID OSCILLATOR
f_osc(o)
oscillator operational
60
frequency
f_osc
∆f_osc(V)
∆f_osc(T)
oscillator frequency
note 3
oscillator frequency variation
with supply voltage
oscillator frequency variation
with temperature
∆V_CC = 5%; note 4
∆V_CC = 10%; note 4
∆T = ±25 °C; with compensation;
note 5
193.15
−
−
−
−
15
40
1200
∆T = 35 °C; without compensation; −
note 5
2000
Φ_osc
phase noise, carrier-to-noise worst case in the frequency range
sideband
±100 kHz frequency offset
−
−109
±10 kHz frequency offset
−
−87
RSC_(p-p) ripple susceptibility of V_CC 4.75 V <V_CC <5.25 V; worst case in 15
70
(peak-to-peak value)
the frequency range; ripple
frequency 500 kHz; note 6
FM_mod
FM modulation caused by
I²C communication
worst case; note 7
−
−
MAX. UNIT
28
dB
28
dB
24
dB
24
dB
10
dB
10
dB
−
dBµV
−
dBµV
−
dBµV
−
dBµV
−
dBµV
−
mS
−
mS
−
mS
−
mS
−
pF
600 MHz
486.15
−
−
−
MHz
kHz
kHz
kHz
−
kHz
−106
−86
−
dBc/Hz
dBc/Hz
mV
2.12 kHz
2005 Mar 25
16