tea5767hn NXP Semiconductors, tea5767hn Datasheet - Page 30

• Manufacturer Part Number: tea5767hn
• Description: Low-power Fm Stereo Radio For Handheld Applications
• Manufacturer: NXP Semiconductors

NXP Semiconductors
Table 32.
V
For V
[1]
[2]
[3]
TEA5767HN_5
Product data sheet
Symbol
High cut control
TC
Mono to stereo blend control
Mono to stereo switched
Bus-driven mute functions
Tuning mute
CCA
cs(stereo)
cs(stereo)
mute
mute(L)
mute(R)
de-em
Calculation of this 14-bit word can be done as follows:
formula for high side injection:
where:
N = decimal value of PLL word;
f
f
f
clocked with 6.5 MHz.
Example for receiving a channel at 100 MHz with high side injection:
The PLL word becomes 2FCAh.
V
Low side and high side selectivity can be switched by changing the mixer from high side to low side LO injection.
RF
IF
ref
RF
= V
RF
= the intermediate frequency [Hz] = 225 kHz;
= the reference frequency [Hz] = 32.768 kHz for the 32.768 kHz crystal; f
= the wanted tuning frequency [Hz];
the emf value is given; unless otherwise specified.
in
CCD
Figure 13
Dynamic characteristics
= V
Parameter
de-emphasis time
constant
stereo channel separation V
stereo channel separation
switching from mono to
stereo with increasing RF
input level
V
depth
V
V
AFL
AFL
AFR
CC(VCO)
and V
muting depth
is replaced by V
muting depth
= 2.7 V; T
AFR
muting
N
RF1
amb
=
+ V
4
-------------------------------------- -
= 25 C; AC values given in RMS;
…continued
RF2
Conditions
V
V
R = 0 and L = 1 including 9 %
pilot; f = 75 kHz; f
data byte 3 bit 3 = 0;
data byte 4 bit 1 = 1
R = L = 0 or R = 0 and L = 1
including 9 % pilot;
data byte 3 bit 3 = 0;
data byte 4 bit 1 = 0
data byte 1 bit 7 = 1
data byte 3 bit 1 = 1;
f
data byte 3 bit 2 = 1;
f
AF
AF
f
. The radio is tuned to 98 MHz (high side injection).
f = 75 kHz; f
RF
RF
RF
data byte 5 bit 6 = 0
data byte 5 bit 6 = 1
data byte 5 bit 6 = 0
data byte 5 bit 6 = 1
V
V
f
RF
= 1 kHz; R
= 1 kHz; R
ref
RF
RF
= 1 mV
= 1 V
= 45 V; R = L = 0 or
+
= 1 mV
= 20 V
Rev. 05 — 26 January 2007
f
IF
; formula for low side injection:
mod
load(L)
load(R)
= 1 kHz;
Low-power FM stereo radio for handheld applications
mod
< 30 k
< 30 k
= 1 kHz;
N
=
4
------------------------------------------------------------------- -
ref
= 50 kHz for the 13 MHz crystal or when externally
100 10
Min
38
57
114
171
4
24
-
-
-
-
N
32768
=
6
+
4
-------------------------------------- -
225 10
Typ
50
75
150
225
10
-
-
-
-
-
f
f
RF
TEA5767HN
ref
–
3
f
IF
=
Max
62
93
186
279
16
-
1
© NXP B.V. 2007. All rights reserved.
12234
60
80
80
Unit
dB
dB
dB
dB
dB
dB
30 of 40
s
s
s
s