TEF6721HL_4 © Koninklijke Philips Electronics N.V. 2005. All rights reserved.
Product data sheet Rev. 04 — 20 December 2005 25 of 48
Philips Semiconductors
TEF6721HL
Car radio tuner front-end for digital IF
13. Dynamic characteristics
Table 29: Dynamic characteristics
V
FMMIXOUT1
=V
AMMIXOUT1
=V
FMMIXOUT2
=V
AMMIXOUT2
=V
DDA1
=V
DDA2
=V
DDA3
=V
DDA4
=V
DDA5
= 8.5 V; V
DDA6
=5V;
V
DDD
=5V; T
amb
=25
°
C; see Figure 9; all AC values are given in RMS; unless otherwise specified.
Symbol Parameter Conditions Min Typ Max Unit
Voltage controlled oscillator
f
osc
oscillator frequency 159.9 - 248.2 MHz
C/N carrier-to-noise ratio f
osc
= 200 MHz; ∆f = 10 kHz;
B=1Hz
- 97 - dBc
RR
ripple rejection
f
ripple
= 100 Hz;
V
DDA4(ripple)
= 100 mV;
f
osc
= 200 MHz
92 99 - dB
Crystal oscillator
f
xtal
crystal frequency - 20.5 - MHz
C/N carrier-to-noise ratio f
xtal
= 20.5 MHz; ∆f = 10 kHz - 112 -
Circuit inputs: pins XTAL1, XTAL2 and XTALGND
[1]
V
o(xtal)
crystal oscillator output
voltage
single tuner or master tuner;
measured between pins
XTAL1 and XTALGND or
between pins XTAL2 and
XTALGND; see
Figure 10
100 - 250 mV
V
XTAL1
,
V
XTAL2
DC bias voltage 1.7 2.1 2.5 V
R
i
real part of input
impedance
V
XTAL1
− V
XTAL2
=1mV −250 - - Ω
C
i
input capacitance 8 10 12 pF
V
i(xtal)
crystal oscillator input
voltage
slave tuner; minimum
required input voltage
between pins XTAL1 and
XTALGND or between pins
XTAL2 and XTALGND;
see
Figure 10
--50mV
Synthesizer
f
AM(ant)
AM input frequency LW 0.144 - 0.288 MHz
MW 0.522 - 1.710 MHz
SW 5.73 - 9.99 MHz
f
FM(ant)
FM input frequency 64 - 108 MHz
f
FM(WB)(ant)
FM weather band input
frequency
162.4 - 162.55 MHz
Programmable divider
N
prog
programmable divider ratio 512 - 32767
∆N
step
programmable divider step
size
-1-
∆f
osc
f
osc
------------
dBc
Hz
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