Preliminary specification
Supersedes data of 1996 Nov 04
File under Integrated Circuits, IC01
1997 May 05
Page 2
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
FEATURES
• FM mixer for conversion from FM-IF1= 72.2 MHz to
FM-IF2= 10.7 MHz
• AM mixer for conversion from AM-IF1= 10.7 MHz to
AM-IF2= 450 kHz
• FM-IF gain stage
• Crystal oscillator providing mixer frequencies and
references for IF-counter
• FM quadrature demodulator with automatic centre
frequency adjustment and THD compensation
• AM-IF-amplifier and demodulator
2
C-bus transceiver with interface to enable direct data
• I
transfer to radio front-end
• IF-count for AM and FM
• Analog-to-digital conversion of level voltage and
multi-path information
• Reference frequency generation for PLL synthesizer.
GENERAL DESCRIPTION
The TEA6824T together with the TEA6810T forms the
receiver part of an AM/FM electronically tuned car radio
providing FM MPX signal and AM AF signal for Car Digital
Signal Processor (CDSP) applications.
ORDERING INFORMATION
TYPE NUMBER
NAMEDESCRIPTIONVERSION
TEA6824TVSO56plastic very small outline package; 56 leads; face downSOT190-2
In accordance with the Absolute Maximum Rating System (IEC 134).
SYMBOLPARAMETERCONDITIONSMIN.MAX.UNIT
V
DDA1
V
DDA2
V
DDA3
V
DDD
T
stg
T
amb
V
es
Note
1. Charge device model class B: equivalent to discharging a 200 pF capacitor via a 0 Ω series resistor.
analog supply voltage 1 (pin 5)−0.3+6.5V
analog supply voltage 2 (pin 28)−0.3+12V
analog supply voltage 3 (pin 56)−0.3+12V
digital supply voltage (pin 52)−0.3+6.5V
storage temperature−55+150°C
operating ambient temperature−40+85°C
electrostatic handlingnote 1
3. The AM oscillator signal is generated by division of the 61.5 MHz crystal oscillator. Two divider ratios programmable
by the I2C-bus: division by 6 (AM-IF1= 10.7 MHz); division by 2 (AM-IF1= 30 MHz).
4. For typical AM level curve see Fig.10.
5. For AM detector; f
mixer bias current pins 22 and 23567mA
mixer leakage current
in FM position−−2µA
pins 22 and 23
conversion gain2.22.73.4mS
input resistance between
isanalog-to-digital converted with 3 bits covering an IF2 amplitude modulation range
40-4
1997 May 0512
Page 13
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
handbook, full pagewidth
GENERATOR
R&S SMPC
Rg = 50 Ω
handbook, full pagewidth
f
= 72.2 MHz
IF1
GENERATOR
R&S SMPC
Rg = 50 Ω
1 : 1
13
TEA6824T
14
19
20
f
Fig.3 Test circuit FM mixer.
PASSIVE
ATTENUATOR
–6 dB
RIN = 50 Ω
R
= 330 Ω
OUT
10 nF
27
24
10 nF
+8.5 V
3.5
3.5
= 10.7 MHz
IF2
TEA6824T
LOW NOISE
Ω
330
Ω
AMPLIFIER
AVD 704201
(S/N = 103 dB)
OSCILLOSCOPE
PM3295A
330
2
10 nF
29
4
SPECTRUM
ANALYZER
HP8568A
MHA533
MHA534
Fig.4 Test circuit IF-amplifier.
handbook, full pagewidth
GENERATOR
R&S SMPC
Rg = 50 Ω
10 nF
50 Ω
37
TEA6824T
35
100 nF
Fig.5 Test circuit limiter gain.
1997 May 0513
1
2
10 nF
OSCILLOSCOPE
PM3295A
10 nF
MHA535
Page 14
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
20
handbook, full pagewidth
V
43-4
(dB)
0
–20
–40
–60
–80
–3
10
(1) AF: fIF= 10.7 MHz; deviation = 22.5 kHz; f
–2
10
mod
–1
10
= 1 kHz.
(2) Noise: unweighted B = 250 Hz to 15 kHz with de-emphasis 50 µs.
Fig.6 Signal and noise of unmuted MPX voltage.
MHA248
(1)
(2)
11010
2
V
(mV)
37-35
3
10
10
handbook, full pagewidth
V
50-4
(V)
8
6
4
2
0
–3
10
(1) Temperature compensation off.
(2) Temperature compensation on.
MHA249
(1)
(2)
–2
10
–1
10
11010
2
V
(mV)
37-35
3
10
Fig.7 Unweighted voltage level (typical curve).
1997 May 0514
Page 15
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
10
handbook, full pagewidth
V
50-4
(V)
8
6
4
2
0
–3
10
MHA250
–2
10
–1
10
11010
2103
V
(mV)
37-35
Fig.8 Adjustment range of unweighted voltage level.
handbook, full pagewidth
10 nF
GENERATOR
R&S SMPC
Rg = 50 Ω
f
= 10.7 MHz
IF1
270 Ω
10 nF
27
24
22
TEA6824T
23
Fig.9 Test circuit AM mixer.
1997 May 0515
+8.5 V
7
7
22
nF
LOW NOISE
2.2
kΩ
AMPLIFIER
AVD 704201
(S/N = 103 dB)
20
SPECTRUM
ANALYZER
HP8568A
MHA536
Page 16
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
20
handbook, full pagewidth
V
48-4
(dB)
0
–20
–40
–60
–80
–3
10
(1) AF: f = 450 kHz; m = 30%; f
(3) THD m = 80%. (4) AM level voltage.
10
Fig.10 Signal, noise and distortion of AM AF output voltage and AM voltage level (typical curve).
(1)
(2)
(3)
–2
= 400 Hz. (2) Noise: unweighted B = 250 Hz to 15 kHz.
mod
–1
10
11010
(4)
MHA214
2103
V
(mV)
33-34
8
THD
(%)
6
4
2
0
I2C-BUS AND I2C-BUS CONTROLLED FUNCTIONS
2
C- bus specification
I
The standard I2C-bus specification is expanded by the
following definitions.
Structure of the I2C-bus logic: slave transceiver with auto
increment and expansion to switch a direct transfer of all
transmissions to an output for the radio front-end IC
TEA6810T.
Sub-addresses are not used.
ATA TRANSFER FOR THE TEA6824T
D
Data sequence:
• Address
• Byte 1
• Byte 2.
The data transfer may only be in this order. The transfer
direction of the data bytes is defined by the LSB of the
address.
The data becomes valid at the output of the internal
latches with the acknowledge of each byte. A STOP
condition after any byte can shorten transmission times.
When writing to the transceiver by using the STOP
condition before completion of the whole transfer:
• The remaining bytes will contain the old information
• If the transfer of a byte was not completed, this byte is
lost and the previous information is available.
D
ATA TRANSFER TO AN OUTPUT OF THE FRONT-END IC
A data bit in the transceiver of the TEA6824T enables or
disables a direct transfer of all transmissions to an
interface stage for the front-end IC.
For a transmission to the front-end IC the address and the
data format of the front-end IC has to be used.
Remark: The pull-up resistors for the front-end interface
(pins 6 and 7) should not be connected to the +5 V supply
voltage of the front-end IC, otherwise a bus pull-down
(pin 53) can occur during switching off the front-end supply
when the interface stage is enabled.
D
ATA TRANSFER TO THE IF IC
Data transfer to the IF IC (TEA6824T) is independent of
the state of interface stage for the front-end IC.
1997 May 0516
Page 17
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
Table 1 Structure of the I2C-bus
DESCRIPTIONSPECIFICATION
Bus address of
1100001X
the TEA6824T
Subaddressnot used
Hardware (pin)
not available
programmable
address bits
Default settings by
power-on reset
data byte 1 bits 4 to 7 are set to
logic 0; all other bits are random
Table 2 Data to be received by the IC for data byte 1
Table 4 Data to be received by the IC for data byte 2
BITDESCRIPTIONRESULT
0AM/FM; AM modebit 0 = 0
AM/FM; FM modebit 0 = 1
1divider for AM mixer; divide-by-2bit 1 = 0
divider for AM mixer; divide-by-6bit 1 = 1
2measure time IF-count; 40 msbit 2 = 0
measure time IF-count; 4 msbit 2 = 1
3not used
4IF-prescaler division rate;
bit 4 = 0
divide-by-200
IF-prescaler division rate;
bit 4 = 1
divide-by-25
5not used
6temperature compensation of
unweighted voltage level;
temperature coefficient as specified
in Chapter “Characteristics”
temperature compensation offbit 6 = 0
temperature compensation onbit 6 = 1
7not used
Table 5 Data to be transmitted by the IC for data byte 1;
note 1
BITDESCRIPTION
0bit 1 level information
1bit 2 level information
2MSB (bit 3) level information
3LSB multi-path information
4multi-path information
5MSB multi-path information
6not used
7LSB (bit 0) level information
Note
1. The analog-to-digital conversion for multi-path and
level will be performed during a transmission of any
2
address to the I
C-bus.
1997 May 0517
Page 18
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
Table 6 Data to be transmitted by the IC for data byte 2
BITDESCRIPTION
0LSB of the IF-counter
1IF-counter
2IF-counter
3IF-counter
4IF-counter
5IF-counter
6IF-counter
7MSB of the IF-counter
REFERENCED FREQUENCY GENERATION
Table 7 Division ratios
DIVISION RATIO
FREQUENCY (kHz)
205003
123005
615010
410015
246025
123050
REFERENCE
Note
1. All specified frequencies are valid for a crystal
oscillator frequency of 61.5 MHz.
Table 8 Output signal of reference frequency divider
SYMBOLPARAMETERMIN.TYP.MAX.UNIT
V
10-11(p-p)
differential output voltage between pins 10 and 11
0.30.40.5V
(peak-to-peak value)
V
10-4(p-p)
; V
11-4(p-p)
single-ended output voltage between pins 10 and 4
0.150.20.3V
and between pins 11 and 4 (peak-to-peak value)
C
10-4
; C
11-4
output capacitance between pins 10 and 4 and
−−4pF
between pins 11 and 4
R
10-52
; R
11-52
output resistance between pins 10 and 52 and
80010001200Ω
between pins 11 and 52
(1)
IF-
COUNTER
Table 9 IF-counter sensitivity
SYMBOLPARAMETERCONDITIONSMIN.UNIT
V
V
33-34
37-35
IF-counter sensitivityAM mode; m = 0200µV
IF-counter sensitivityFM mode200µV
AM and FM counting windows are 4 or 40 ms. AM counting resolution is 250 or 25 Hz. FM counting resolution is 5 kHz,
625 Hz, 50 kHz or 6.25 kHz. AM-IF-prescaler is divisible by 1. FM-IF-prescaler is divisible by 25 or 200.
1997 May 0518
Page 19
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
B0
handbook, full pagewidth
B1 B2 B3 B4 B5 B6 B7
FM IF2
prescaler setting
AM IF2
FM IF-PRESCALER
÷ 25 /÷ 200
8-BIT BINARY COUNTER
MHA205
4 ms/40 ms
counter window
Fig.11 IF-counter structure.
IF-counter read out
IF-counter read out as a function of FM or AM position, counter window and prescaler setting
254010700E0H62510620.6310779.38
AM1445008H250418.25481.75
AM
(1)
14045050H25446.83453.18
Note
1. In position FM with a prescaler ratio of 25, counter window of 40 ms and in position AM with 40 ms counter window
ambiguous counting results within the IF filter bandwidth are obtained. The counting range is 127 counts above and
127 counts below the nominal IF of 10.7 MHz for FM and 450 kHz for AM.
The IF-count windows are valid for a crystal oscillator frequency of 61.5 MHz.
The FM/AM switching is carried out by bit 0 of byte 2 of the received data of the IC.
The IF-counter operates continuously.
The IF-counter and window counter will be reset when the I2C-bus logic detects the address of the IC. This disables
changes in the latches for the IF-counter, while reading this value. If the transmission to the front-end IC is disabled after
the synthesizer loop of the TEA6810T front-end IC has locked to a new frequency, the IF-counter will be available after
the set measuring time.
The IF-counter starts at 0. The IF-counter output are the 8 least significant bits of the counting result.
1997 May 0519
Page 20
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
INTERNAL CIRCUITRY
Table 10 Equivalent pin circuits and pin voltages
Fig.13 Application diagram (continued from Fig.12).
1997 May 0528
TK
COMPEN-
SATION
4050
220 nF100 nF
LEVEL
49
V
CCD
+5 V
52
10 Ω
33 µF
12
120 kΩ
10 Ω
V
CCA
5
100
nF
+5 V
47 µF
MHA539
Page 29
1997 May 0529
3.3 µH
100 nF
BAV
2.2 MΩ
100 pF
220 nF
99
10 nF
100 nF
3.9 kΩ
2.2 kΩ
BB135
47 pF
E543SNAS-02010
L7
1.4 to 10 pF
1.8 pF
1SV172
330 nH
6.8 pF
5.6 pF
E543SNAS
-4011
47 kΩ
220 µH
10 pF
3.3 µH
100 Ω
3.3 nF
10 kΩ
47 kΩ
BB
804
L1
1 nF
220 Ω
BF861A
47 mH
388BN-1211Z
470 Ω
22 Ω100 µF
22 nF
220 kΩ
1.8 pF
2.7 pF
1 µF
1 µF
10 pF
10 pF
33 µF
1 µF
100 nF
100 pF
22 pF
8.2 pF
470 Ω
40
35
30
25
21
33 µH
270 pF
TEA6810T
68 µH
270 pF
1
5
10
15
20
10 nF
lock
detector
100 nF
100
nF
100 nF
10 kΩ
10 kΩ
47 µF
330 pF
1 mH
V
100
nF
V
CCD
CC
+8.5 V
+5 V
33 µH
TR2
56 pF
330 pF
7PSAG-1946D = S
47 µF
SFP450
V
CCA
+5 V
P392BC-1977Z
SDA
SCL
PS392BE2049AJ = S
62 pF
L13
F
ref
10 Ω
33 µF
S369SCS-2144AJ (2x)
22 nF
TR4
1.5 nF
TR5
100 nF
61.5 MHz
TR3
56 pF
10 nF
SFE10.7
4.3 k
V
Ω
47 kΩ
ref
470 nF
120 kΩ
22 nF
220 nF
10 nF
820 kΩ
100 nF
1
5
10
15
20
25
28
TEA6824T
56
50
45
40
35
30
29
100 nF
330 Ω
330 Ω
100 nF
100 kΩ
FMSTOP
220 nF
47 µF
22 kΩ
100 nF
100 nF
47 µF
10 kΩ 10 kΩ
10 nF
2.2 nF
R39
LEVELADJ
SFE10.7
330
Ω
100 nF
2.7 kΩ
BF840
390 Ω
SFE10.7
22 µH
33 µ
33 kΩ
AMSTOP
100 kΩ
R51
33 kΩ
R40
100 kΩ
10 Ω
68
Ω
330
Ω
27 Ω
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
V
CC
+8.5 V
SCL
SDA
V
CCD
+5 V
F
LEVEL
AMAF
MPX
V
ref
MHA540
Fig.14 AM/FM car radio receiver with TEA6810T and TEA6824T.
handbook, full pagewidth
Page 30
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
PACKAGE OUTLINE
VSO56: plastic very small outline package; 56 leads; face down
y
c
D
Z
56
pin 1 index
29
SOT190-2
H
E
E
L
L
p
A
1
A
2
(A )
3
Q
v M
A
X
A
θ
A
281
w M
b
e
0510 mm
DIMENSIONS (inch dimensions are derived from the original mm dimensions)
mm
OUTLINE
VERSION
SOT190-2
A
max.
3.3
0.13
0.3
0.1
0.012
0.004
b
3
p
3.0
2.8
0.12
0.11
IEC JEDEC EIAJ
0.25
0.01
0.42
0.30
0.017
0.012
0.22
0.14
0.0087
0.0055
UNITA1A2A
inches
Note
1. Plastic or metal protrusions of 0.3 mm maximum per side are not included.
2. Plastic interlead protrusions of 0.25 mm maximum per side are not included.
(1)E(2)
cD
21.65
21.35
0.85
0.84
REFERENCES
p
scale
eHELLpQZywv θ
11.1
0.75
11.0
0.44
0.0295
0.43
15.8
15.2
0.62
0.60
2.25
0.089
1.6
1.4
0.063
0.055
detail X
1.45
0.2
1.30
0.057
0.0080.004
0.051
EUROPEAN
PROJECTION
0.10.1
0.004
(1)
0.90
0.55
0.035
0.022
ISSUE DATE
96-04-02
97-08-11
o
7
o
0
1997 May 0530
Page 31
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
SOLDERING
Introduction
There is no soldering method that is ideal for all IC
packages. Wave soldering is often preferred when
through-hole and surface mounted components are mixed
on one printed-circuit board. However, wave soldering is
not always suitable for surface mounted ICs, or for
printed-circuits with high population densities. In these
situations reflow soldering is often used.
This text gives a very brief insight to a complex technology.
A more in-depth account of soldering ICs can be found in
our
“IC Package Databook”
Reflow soldering
Reflow soldering techniques are suitable for all VSO
packages.
Reflow soldering requires solder paste (a suspension of
fine solder particles, flux and binding agent) to be applied
to the printed-circuit board by screen printing, stencilling or
pressure-syringe dispensing before package placement.
Several techniques exist for reflowing; for example,
thermal conduction by heated belt. Dwell times vary
between 50 and 300 seconds depending on heating
method. Typical reflow temperatures range from
215 to 250 °C.
Preheating is necessary to dry the paste and evaporate
the binding agent. Preheating duration: 45 minutes at
45 °C.
(order code 9398 652 90011).
Wave soldering
Wave soldering techniques can be used for all VSO
packages if the following conditions are observed:
• A double-wave (a turbulent wave with high upward
pressure followed by a smooth laminar wave) soldering
technique should be used.
• The longitudinal axis of the package footprint must be
parallel to the solder flow.
• The package footprint must incorporate solder thieves at
the downstream end.
During placement and before soldering, the package must
be fixed with a droplet of adhesive. The adhesive can be
applied by screen printing, pin transfer or syringe
dispensing. The package can be soldered after the
adhesive is cured.
Maximum permissible solder temperature is 260 °C, and
maximum duration of package immersion in solder is
10 seconds, if cooled to less than 150 °C within
6 seconds. Typical dwell time is 4 seconds at 250 °C.
A mildly-activated flux will eliminate the need for removal
of corrosive residues in most applications.
Repairing soldered joints
Fix the component by first soldering two diagonallyopposite end leads. Use only a low voltage soldering iron
(less than 24 V) applied to the flat part of the lead. Contact
time must be limited to 10 seconds at up to 300 °C. When
using a dedicated tool, all other leads can be soldered in
one operation within 2 to 5 seconds between
270 and 320 °C.
1997 May 0531
Page 32
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
DEFINITIONS
Data sheet status
Objective specificationThis data sheet contains target or goal specifications for product development.
Preliminary specificationThis data sheet contains preliminary data; supplementary data may be published later.
Product specificationThis data sheet contains final product specifications.
Limiting values
Limiting values given are in accordance with the Absolute Maximum Rating System (IEC 134). Stress above one or
more of the limiting values may cause permanent damage to the device. These are stress ratings only and operation
of the device at these or at any other conditions above those given in the Characteristics sections of the specification
is not implied. Exposure to limiting values for extended periods may affect device reliability.
Application information
Where application information is given, it is advisory and does not form part of the specification.
LIFE SUPPORT APPLICATIONS
These products are not designed for use in life support appliances, devices, or systems where malfunction of these
products can reasonably be expected to result in personal injury. Philips customers using or selling these products for
use in such applications do so at their own risk and agree to fully indemnify Philips for any damages resulting from such
improper use or sale
2
PURCHASE OF PHILIPS I
C COMPONENTS
2
Purchase of Philips I
components in the I2C system provided the system conforms to the I2C specification defined by
Philips. This specification can be ordered using the code 9398 393 40011.
C components conveys a license under the Philips’ I2C patent to use the
1997 May 0532
Page 33
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
NOTES
1997 May 0533
Page 34
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
NOTES
1997 May 0534
Page 35
Philips SemiconductorsPreliminary specification
In Car Entertainment (ICE) car radioTEA6824T
NOTES
1997 May 0535
Page 36
Philips Semiconductors – a worldwide company
Argentina: see South America
Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,
United States: 811 East Arques Avenue, SUNNYVALE, CA 94088-3409,
Tel. +1 800 234 7381
Uruguay: see South America
Vietnam: see Singapore
Yugoslavia: PHILIPS, Trg N. Pasica 5/v, 11000 BEOGRAD,
Tel. +381 11 625 344, Fax.+381 11 635 777
For all other countries apply to: Philips Semiconductors, Marketing & Sales Communications,
Building BE-p, P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands, Fax. +31 40 27 24825
The information presented in this document does not form part of any quotation or contract, is believed to be accurate and reliable and may be changed
without notice. No liability will be accepted by the publisher for any consequence of its use. Publication thereof does not convey nor imply any license
under patent- or other industrial or intellectual property rights.
Internet: http://www.semiconductors.philips.com
Printed in The Netherlands547027/1200/02/pp36 Date of release: 1997 May 05Document order number: 9397 750 01772
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