Datasheet tea5762 DATASHEETS (Philips)

INTEGRATED CIRCUITS

DATA SH EET

TEA5762

Self tuned radio

Preliminary specification
File under Integrated Circuits, IC01

1995 Jun 23

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

FEATURES

• The tuning system has an optimized IC partitioning both
from application (omitting interferences) and flexibility
(removable front panel option) point of view: the tuning
synthesizer is on-chip with the radio

• The tuning quality is superior and requires no IF counter
for stop-detection; it is insensitive to ceramic filter
tolerances

• In combination with the microcontroller, fast, low-power
operation of preset mode, manual search, automatic
search and automatic store are possible

• The local (internal) controller function facilitates reduced
and simplified microcontroller software

• The high integration level means fewer external
components with regard to the communication between
the radio and the microcontroller and a simple and small
printed-circuit board (PCB)

• The inherent FUZZY LOGIC behaviour of STR (Self
Tuned Radio), which mimics hand tuning, yields a
potentially fast yet reliable tuning operation

• The level of the incoming signal at which the radio must
lock is software programmable

• Two programmable ports

• FM-on/off port to control the external FM front end

• High selectivity with distributed IF gain

• Soft mute

• Signal dependent stereo-blend

• High impedance MOSFET input on AM

• Wide supply voltage range of 2.5 to 12 V

• Low current consumption 18 mA at AM and FM

(including tuning synthesizer for AM)

• Low noise figure

• Low output distortion

• Due to the new tuning concept, the tuning is

independent of the channel spacing.

GENERAL DESCRIPTION

The TEA5762 is a 44-pin integrated AM-radio and FM-IF
and demodulator part including a novel tuning concept.
The radio part is based on the TEA5712.

It is designed for the use with an external FM-front end.
The new tuning concept combines the advantages of hand

tuning with electronic facilities and features. User
intelligence is incorporated into the tuning algorithm and
an improvement of the analog signal processing is used for
the AFC function.

ORDERING INFORMATION

TYPE

NUMBER

TEA5762H QFP44 plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 × 10× 1.75 mm SOT307-2

1995 Jun 23 2

NAME DESCRIPTION VERSION

PACKAGE

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC1

V

CC2

V

tune

I

CC1

I

DDD

I

CC2

T

amb

AM performance; note 1
V

10

V

i1

THD total harmonic distortion V
FM performance; note 2
V

10

V

i4

THD total harmonic distortion IF filter

supply voltage 1 2.5 − 12 V
supply voltage 2 for tuning −−12 V
tuning voltage 0.7 − V

CC2

− 0.75 V

supply current 1 AM mode 12 15 18 mA

FM mode 13 16 19 mA

digital supply current AM mode − 3.3 − mA

FM mode − 2.7 − mA

supply current 2 for tuning in preset

−−640 µA

mode (band-end to band-end)
operating ambient temperature −15 − +60 °C

AF output voltage Vi1=5mV 364570 mV
RF sensitivity input voltage S/N = 26 dB 40 55 70 µV

=1mV − 0.8 2.0 %

i1

AF output voltage Vi4=5mV 404857 mV
IF sensitivity input voltage V10= −3 dB;

− 20 30 µV

V10= 0 dB at Vi4=10mV

− 0.3 0.8 %

SFE10.7MS3A20K-A

MPX performance; note 3

α

cs

channel separation Vi4=30mV 26 30 − dB

Notes

1. Conditions AM: V

CC1

=3V; V

CC2

=12V; V

=3V; fi= 1 MHz; m = 0.3; fm= 1 kHz; measured in Fig.8 with S1 in

DDD

position A and S2 in position B; unless otherwise specified.

2. Conditions FM: V

CC1

=3V; V

CC2

= 12 V; V

=3V; fi= 10.7 MHz; ∆fm= 22.5 kHz; fm= 1 kHz; measured in Fig.8

DDD

with S2 in position A and S3 in position A; unless otherwise specified.

3. Conditions MPX: V

CC1

=3V; V

CC2

=12V; V

DDD

=3V; V

i3(L+R)

= 155 mV; V

Fig.8 with S2 in position B and S3 in position B; unless otherwise specified.

= 15.5 mV; fi= 1 kHz; measured in

pilot

1995 Jun 23 3

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

BLOCK DIAGRAM

(n)

(p)

PILFIL

MO/ST

LFI

VCO

AFLO

AFRO

MUTE

AFC

AFC

AFC

MBE815

BUS-

DATAFM-IF2I

WRITE-

IFGND FSIFMDEM

CLOCK

ENABLE

16

PILOT

12

24

DETECTOR

19 kHz

PLL

9

38 kHz

stereo

DECODER

14

MATRIX

15

mono

stereo

13

MUTE

SDS

TEA5762

21

1817272829333537

FM

DETECTOR

hard mute level

AFC

FM

IF2

AM/FM

INDICATOR

STATUS

REGISTER

IN-LOCK

DETECTOR

up

down

level

PUMP

CHARGE

CIRCUIT

SEQUENTIAL

FM

AM

32

20

19

V/I

CONVERTER

10 11 342

CC2

V

TUNE RFGND2 RFGND1MPXIAFO

AM

DETECTOR

P0
P1AGCAM-IF2I/OAM-MIXERAMOSC

handbook, full pagewidth

Fig.1 Block diagram.

AM

AM

AGC

IF

AM-IF1I

MIXER

FM-IFI1 FM-IFO1

1995 Jun 23 4

FM

IF1

TUNER

SWITCH

39

FM-ON/OFF

SHIFT REGISTER

38

34

7

CC1

V

STAB(A)VSTAB(B)

V

STABILIZER

1

23

DDD

V

RIPPLE

MEMORY

LAST-STATION

5

COUNTI

PROGRAMMABLE

PRESCALER

4

WINDOW

COUNTER

MULTIPLEXER

CGND

CRYSTAL

25

XTAL

DETECTOR

OSCILLATOR

26

DGND

AM

OSCILLATOR

AM

END

FRONT

2

AM-RFI

6404136443130 822

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

PINNING

SYMBOL PIN DESCRIPTION

RIPPLE 1 ripple capacitor input
AM-RFI 2 AM-RF input
RFGND1 3 RF ground 1 and substrate
CGND 4 counter ground
COUNTI 5 counter input
AMOSC 6 parallel tuned AM oscillator circuit to ground
V

CC1

TUNE 8 tuning output current
VCO 9 voltage controlled oscillator input
AFO 10 AM/FM AF output (output impedance typical 5 kΩ)
MPXI 11 stereo decoder input (input impedance typical 150 kΩ)
LFI 12 loop-filter input
MUTE 13 mute input
AFLO 14 left channel output (output impedance typical 4.3 kΩ)
AFRO 15 right channel output (output impedance typical 4.3 kΩ)
PILFIL 16 pilot detector filter input
IFGND 17 ground of IF, detector and MPX stage
FMDEM 18 ceramic discriminator input
AFC

(n)

AFC

(p)

FSI 21 field-strength indicator
V

CC2

V

DDD

MO/ST 24 mono/stereo and tuning indication output
XTAL 25 crystal input
DGND 26 digital ground
BUS-CLOCK 27 bus-clock input
DATA 28 bus data input/output
WRITE-ENABLE 29 bus write enable input
P0 30 programmable output port (P0)
P1 31 programmable output port (P1)
AFC 32 450 kHz LC input circuit for AM AFC
FM-IF2I 33 FM-IF input 2 (input impedance typical 330 Ω)
V

STAB(B)

FM-IFO1 35 FM-IF output 1 (input impedance typical 330 Ω)
AM-IF2I/O 36 input/output to IFT; output current source
FM-IFI1 37 FM-IF input 1 (input impedance typical 330 Ω)
V

STAB(A)

FM-ON/OFF 39 FM ON/OFF port
AM-MIXER 40 open-collector output to IFT

7 supply voltage 1

19 AFC negative output
20 AFC positive output

22 supply voltage 2 (for tuning)
23 digital supply voltage

34 internal stabilized supply voltage (B)

38 internal stabilized supply voltage (A)

1995 Jun 23 5

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

SYMBOL PIN DESCRIPTION

AM-IF1I 41 IFT or ceramic filter input (input impedance typical 3 kΩ)
RFGND2 42 FM-RF ground 2
n.c. 43 not connected
AGC 44 AGC capacitor input

handbook, full pagewidth

RIPPLE

AM-RFI

RFGND1

CGND

COUNTI

AMOSC

V

CC1

TUNE

VCO

AFO

MPXI

AGC

n.c.

RFGND2

AM-IF1I

AM-MIXER

44

43

42

41

40

1
2
3
4
5

15

AFRO

TEA5762

16

PILFIL

6
7
8

9
10
11

12

13

14

LFI

MUTE

AFLO

STAB(A)

FM-ON/OFF

V

39

38

17

18

IFGND

FMDEM

FM-IFI1
37

19

(n)

AFC

AM-IF2I/O
36

20

(p)

AFC

STAB(B)

FM-IFO1

V

35

34

21

22

FSI

CC2

V

33

FM-IF2I

32

AFC

31

P1

30

P0

29

WRITE-ENABLE

28

DATA
BUS-CLOCK

27
26

DGND

25

XTAL

24

MO/ST

23

V

DDD

MBE820

1995 Jun 23 6

Fig.2 Pin configuration.

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

FUNCTIONAL DESCRIPTION

The TEA5762 is an integrated radio circuit with
AM-receiver and FM-IF part with demodulator and stereo
decoder. The circuit includes digital tuning and control
functions.

The radio

The AM circuit incorporates a double balanced mixer,
a one-pin low voltage oscillator (up to 30 MHz) and is
designed for distributed selectivity.

The AM input is designed to be connected to the top of
a tuned circuit. AGC controls the IF amplification and for
large signals it lowers the input impedance of the
AM front end.

The first AM selectivity can be an IF-Tank (IFT) or an IFT
combined with a ceramic filter; the second one is an IFT.

For FM operation an external FM front end is necessary.
This is switched on and off by the FM-ON/OFF signal
which is generated in the bus system.

The AFC circuit in the TEA5762 provides a tuning voltage
to drive the VCO of the external FM front end.

The frequency of the external VCO is counted in the Self
Tuned Radio (STR) tuning system.

The FM-IF circuit is designed for distributed IF ceramic
filters. The FM quadratic detector uses a ceramic
resonator.

The PLL stereo decoder incorporates a signal dependent
stereo-blend circuit and a soft-mute circuit.

Tuning

The tuning-concept of STR is based on FUZZY LOGIC:
it mimics hand tuning (hand tuning is a combination of
coarse and fine tuning to the qualitatively best frequency
position). As a consequence the tuning system is very fast.

The tuning algorithm, which is controlled by the sequential
circuit (see Fig.1), is completely integrated. Thus only a
few external components are required.

The bus and the microcontroller can be kept very simple.
The bus only consists of three wires (bus-clock, data and
write enable). The microcontroller must basically give two
instructions:

• Preset operation

• Search operation.

PRESET OPERATION
In preset mode, the microcontroller has to load information

such as frequency band, frequency and mono/stereo. This
information has to be sent via the bus to STR. The internal
algorithm controls the tuning sequence as follows: the
information is loaded into a shift register, a last-station
memory and the counter. The Automatic Frequency
Control (AFC) is switched off. The counter starts counting
the VCO frequency and the tuning voltage is varied until
the desired frequency roughly equals the real frequency.
The AFC is then switched on and the counter is switched
off. The real frequency is now tuned precisely to the
desired frequency.

After the AFC has tuned the real frequency to the desired
frequency an in-lock signal can be generated. In order to
obtain a reliable in-lock signal, there are two parameters
measured: the field strength and the S-curve. The field
strength indicates the strength of the station and by
looking at the S-curve the system can distinguish false
in-locks from real in-locks (false in-locks occur on the
wrong slope of the S-curve).

In the FM mode the tuning voltage controls the VCO of the
external FM front end and the frequency of the VCO is
counted in the TEA5762.

In the event of fading or pulling, the in-lock signal becomes
logic 0, the synthesizer will be switched on again and the
algorithm will be repeated.

EARCH OPERATION

S
During a search operation, the only action the

microcontroller has to take is: sending the desired band
plus the direction and the search sensitivity level to STR.
The search operation is performed by the charge pump
until an in-lock signal is generated (combination of
measuring the field strength and the S-curve). The AFC
then fine tunes to the station. The frequency belonging to
the found station will be counted by the counter and written
into the last-station memory and the shift register of the
counter. At this time the frequency is available in the shift
register and can be read by the microcontroller. The
microcontroller decides whether the frequency is within the
desired frequency band. If it is, this frequency can be
stored under a preset and if it is not, a new search action
should be started.

1995 Jun 23 7

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

Description of the bus

The TEA5762 radio has a bus which consists of three
wires, as shown in Table 1.

These three signals, together with the mono/stereo pin
(MO/ST, pin 24), communicate with the microcontroller.
The mono/stereo indicator has two functions, which are
controlled by the bus-clock, as shown in Table 2.

The TEA5762 has a 25-bit shift register; see Table 3 for an
explanation of the shift register bits.

If in search mode no transmitter can be found, all
frequency bits of the shift register are set to logic 1.

The bus protocol is depicted in Figs 3 and 4.

Table 3 Explanation of the shift register bits

BIT DESCRIPTION LOGIC STATE RESULT

S.24 (MSB) search start/end 0 after a search when a station is found or after a preset

1 during the search action

D.23 search up/down 0 indicates if the radio has to search down

1 indicates if the radio has to search up

M.22 mono/stereo 0 stereo is allowed

1 mono is required (radio switched to forced mono)
B0.21 band see Table 4 selects FM/MW/LW/SW band
B1.20 band see Table 4 selects FM/MW/LW/SW band
P0.19 port note 1 user programmable bits which e.g. can be used as

P1.18 port note 1 user programmable bits which e.g. can be used as

S0.17 search-level of station see Table 5 determines the locking field strength during an

S1.16 search-level of station see Table 5 determines the locking field strength during an

15 dummy − buffer
F.14 to F.0 (LSB) frequency − determine the tuning frequency of the radio;

Table 1 Bus signals

SIGNAL PIN DESCRIPTION

BUS-CLOCK 27 software driven clock input
DATA 28 data input/output
WRITE-ENABLE 29 write/read-input

Table 2 Bus clock functions

BUS CLOCK PIN 24 RESULT

LOW LOW stereo

LOW HIGH mono
HIGH LOW tuned
HIGH HIGH not tuned

band switch driver

band switch driver

automatic search, automatic store or manual search

automatic search, automatic store or manual search

see Table 6 for the bit values

Note

1. The output pins 30 and 31 can drive currents up to 5 mA. Bits 19 (P0) and 18 (P1) control the output voltage of the
control pins P0 (pin 30) and P1 (pin 31):

a) bit 19 (P0) LOW sets P0 (pin 30) to LOW
b) bit 19 (P0) HIGH sets P0 (pin 30) to HIGH
c) bit 18 (P1) LOW sets P1 (pin 31) to LOW
d) bit 18 (P1) HIGH sets P1 (pin 31) to HIGH.

1995 Jun 23 8

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

Table 4 Truth table for bits 21 and 20

B0 B1 BAND SELECT

00FM

(1)

01MW
10LW
11SW

Note

1. When FM is selected, the control output FM-ON/OFF
is set LOW to switch on the external FM front end.

Table 5 Truth table for bits 16 and 17

SIGNAL RECEPTION

(1)

S1 S0

FM IF INPUT AM RF INPUT

0 0 >50 µV >28 µV
0 1 >100 µV >40 µV
1 0 >300 µV >63 µV
1 1 >1500 µV >1000 µV

Note

1. The given values for signal reception are
corresponding to a −3 dB point of 20 µV for FM.

Table 6 Values for bits 14 to 0

BIT BIT VALUEFMVALUE

(kHz)

14 2
13 2
12 2
11 2
10 2

92
82
72
62
52
42
32
22
12
02

14
13
12
11
10

9
8
7
6
5
4
3
2
1
0

− 16384

102400 8192

51200 4096
25600 2048
12800 1024

6400 512
3200 256
1600 128

800 64
400 32
200 16
100 8

50 4
25 2

12.5 1

Notes

1. FM value of the affected oscillators;
FM VALUE = FM-RF + FM-IF.

2. AM value of the affected oscillators;
AM VALUE = AM-RF + AM-IF.

(1)

AM

VALUE

(kHz)

(2)

1995 Jun 23 9

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

READING DATA
While write enable is LOW data can be read by the

microcontroller. At a rising edge of the bus-clock, data is
shifted out of the register. This data is available from the
point where the bus-clock is HIGH until the next rising
edge of the bus-clock occurs; see Fig.3

To read the entire shift register 24 clock pulses are
necessary.

handbook, full pagewidth

WRITE-ENABLE

BUS-CLOCK

DATA

data shiftdata available after search ready

MSB is LOW

WRITING DATA
While write enable is HIGH the microcontroller can

transmit data to the TEA5762 (hard mute is active). At a
rising edge of the bus-clock, the register shifts and accepts
one bit into LSB. At clock LOW the microcontroller writes
data; see Fig.4.

To write the entire shift register 25 clock pulses are
necessary.

data read

data available

MBE817

handbook, full pagewidth

WRITE-ENABLE

BUS-CLOCK

DATA

Fig.3 Read data.

MBE818

data changedata shift

Fig.4 Write data.

1995 Jun 23 10

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

BUS TIMING

handbook, full pagewidth

WRITE-ENABLE

V

BUS-CLOCK

DATA

IH

V

IL

t

HIGHtLOW

t

da

Fig.5 Bus timing.

Table 7 Digital inputs

SYMBOL PARAMETER MIN. MAX. UNIT

Digital inputs

V

IH

V

IL

HIGH level input voltage 1.4 − V
LOW level input voltage − 0.6 V

Timing

f

clk

t

HIGH

t

LOW

t

da

clock input − 300 kHz
clock HIGH time 1.67 −µs
clock LOW time 1.67 −µs
shift register available after ‘search ready’ − 14 µs

MBE819

1995 Jun 23 11

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

LIMITING VALUES

In accordance with the Absolute Maximum Rating System (IEC 134).

SYMBOL PARAMETER CONDITIONS MIN. MAX. UNIT

V

CC1

P

tot

T

stg

T

amb

T

j

V

es

Note

1. Charge device model: equivalent to discharging a 200 pF capacitor via a 0 Ω series resistor.

THERMAL CHARACTERISTICS

SYMBOL PARAMETER VALUE UNIT

R

th j-a

supply voltage 1 0 13.2 V
total power dissipation T

=70°C − 250 mW

amb

storage temperature −65 +150 °C
operating ambient temperature −15 +60 °C
operating junction temperature −15 +150 °C
electrostatic handling for all pins note 1 −±200 V

thermal resistance from junction to ambient in free air 65 K/W

1995 Jun 23 12

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

CHARACTERISTICS

V

=3V; T

CC1

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

CC1

V

CC2

V

DDD

V

tune

I

CC2

f

clk(max)

I

CC1

I

DDD

I

CC1

I

DDD

t

search

t

acqu

f

band

∆f

FM

∆f

AM

I

P0/P1(sink)

I

P0/P1(source)

=25°C; unless otherwise specified.

amb

supply voltage 1 2.5 − 12 V
supply voltage 2 for tuning −−12 V
digital supply voltage 2.5 − 12 V
tuning voltage 0.7 − V
supply current 2 for tuning in preset mode

−−640 µA

CC2

− 0.75 V

(band-end to band-end)
maximum bus-clock frequency −−300 kHz
current consumption during acquisition of V

AM mode 12 15 18 mA

CC1

FM mode 12.5 15.5 18.5 mA

current consumption during acquisition of I

DDD

AM mode − 4.8 − mA
FM mode − 5.5 − mA

current consumption after acquisition of V

CC1

AM mode 12 15 18 mA
FM mode 13 16 19 mA

current consumption after acquisition of I

DDD

AM mode − 3.2 − mA

FM mode − 2.7 − mA
synthesizer auto-search time for empty band FM mode −−10 s
synthesizer preset acquisition time between two

band limits

FM − 100 − ms

MW − 150 − ms

LW − 1000 − ms

(1)

SW − 500

− ms
frequency band range of the synthesizer AM mode 0.144 − 30 MHz
AFC inaccuracy of FM with Mitsumi

−−1 kHz

front end
AFC inaccuracy of AM −−100 Hz
sink current of software programmable

V

=5V −−7mA

CC1

output P0/P1
source current of software programmable

V

=5V 5 − 7mA

CC1

output P0/P1

Note

1. Depending on band.

1995 Jun 23 13

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

AM CHARACTERISTICS

Input frequency = 1 MHz; m = 0.3; f
Vi1measured at input of matching network at pin 2; matching network adjusted to maximum output voltage at low input
level; refer to test circuit (see Fig.8); unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

10

V

i1

V

il

AF output voltage Vi1=5mV 364570mV
RF sensitivity input voltage S/N = 26 dB 40 55 70 µV
large signal voltage handling

capacity

PSSR power supply ripple rejection

/∆V7)

(V

10

I

i

C

i

G

c

input current (pin 2) V44= 0.2 V − 0 −µA
input capacitance (pin 2) V44= 0.2 V −−4pF
front end conversion gain V44= 0.2 V 5 10 14 dB

S/N signal-to-noise ratio − 50 − dB
THD total harmonic distortion V

α

450

IF suppression V10=30mV − 56 − dB

= 1 kHz; measured in test circuit at pin 10 (see Fig.8); S2 in position B;

mod

m = 0.8; THD ≤ 8% 150 300 − mV

∆V

= 100 mV (RMS);

7

100 Hz; V

= 0.9 V −26 −14 0 dB

V

44

=1mV − 0.8 2.0 %

i1

= 3.0 V

7

−−47 − dB

FM-IF CHARACTERISTICS

Input frequency = 10.7 MHz; ∆f = 22.5 kHz; f

= 1 kHz; measured in test circuit (see Fig.8) at pin 10; S2 in position B;

mod

refer to test circuit (see Fig.8); unless otherwise specified.

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V
V

10
i4

AF output voltage Vi4=10mV 40 48 57 mV
IF limiting sensitivity V10= −3 dB; V10= 0 dB at

− 50 80 µV

Vi4=10mV

PSSR power supply ripple rejection

/∆V7)

(V

10

S/N signal-to-noise ratio V

∆V7= 100 mV (RMS);
100 Hz; V7= 3.0 V

=10mV 62 −−dB

i4

−44 −−dB

THD total harmonic distortion IF filter SFE10.7MS3A20K-A − 0.3 0.8 %

1995 Jun 23 14

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

STEREO DECODER CHARACTERISTICS

V
maximum channel separation; soft mute off (S4 in position A); unless otherwise specified.

i3(L+R)

= 155 mV; V

= 15.5 mV; f = 1 kHz; apply unmodulated RF signal of 100 mV to front end to set radio to

pilot

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

14/15

V

pilot(s)

V

pilot(m)

V

AF-L/Vi3

S/N signal-to-noise ratio V

AF output voltage − 160 − mV
switch to stereo − 812mV
switch to mono 2 5 − mV
MPX voltage gain −1.5 − +1.5 dB

= 15.5 mV (stereo) − 74 − dB

pilot

THD total harmonic distortion − 0.5 1.0 %

α

cs

α

19

α

38

α stereo-blend V

mute(s) soft mute depth V

channel separation 26 30 − dB
carrier and harmonic suppression 19 kHz (200 mV)=0dB 27 32 − dB

38 kHz 16 21 − dB

=5mV 22 30 − dB

i4

= 200 µV − 12dB

V

i4

=30µV; V14=V

i4

=10µV; V14=V

V

i4

15
15

−10 − dB

−−6−10 dB

TUNING CHARACTERISTICS

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V

FM

FM voltage levels α

-point at Vi4=20µV

−3dB

high (auto-store/search) S0 = 1; S1 = 1 600 1500 5000 µV
medium (auto-store/search) S0 = 0; S1 = 1 100 300 550 µV
low (auto-store/search) S0 = 1; S1 = 0 40 100 200 µV
nominal (preset mode/tuning indication) S0 = 0; S1 = 0 30 50 90 µV

V

AM

AM voltage levels α

-point at Vi4=20µV

−3dB

high (auto-store/search) S0 = 1; S1 = 1 400 1000 2500 µV
medium (auto-store/search) S0 = 0; S1 = 1 50 63 80 µV
low (auto-store/search) S0 = 1; S1 = 0 32 40 50 µV
nominal (preset mode/tuning indication) S0 = 0; S1 = 0 25 28 40 µV

V

AFC(off)

AFC voltage off mode α

-point at Vi4=20µV

−3dB

FM mode − 3 −µV
AM mode − 25 −µV

mute(h) hard mute write enable HIGH − 60 − dB

1995 Jun 23 15

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

(%)

THD

8

9

120100806040200−20

(dBµV)

6

7

4

5

2

3

0

1

1

MBE853

(V)

i1

V

−1

10

−2

10

−3

10

(1)

(2)

(3)

−4

10

−5

10

−6

10

Fig.6 AM mode.

1995 Jun 23 16

0

10

(dB)

handbook, full pagewidth

−10

−7

−20

−30

−40

−50

−60

10

−70

−80

(1) Audio signal.

(2) Noise.

(3) Harmonic distortion.

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

(%)

THD

8

9

120100806040200

(dBµV)

6

7

4

5

2

3

0

1

1

MBE854

(V)

i1

V

−1

10

−2

10

(3)

(4)

(5)

(6)

(7)

−3

10

Fig.7 FM mode.

(1)

0

10

(dB)

−10

−20

−30

(2)

−40

−50

−60

−4

10

−5

10

−6

−70

10

−80

1995 Jun 23 17

handbook, full pagewidth

(1) Mono signal.

(2) Noise in mono mode.

(3) Left channel with modulation left.

(4) Right channel with modulation left.

(5) Noise in stereo mode.

(6) Harmonic distortion ∆f = 75 kHz.

(7) Total harmonic distortion ∆f = 22.5 kHz.

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

INTERNAL CIRCUITS
Table 8 Equivalent pin circuits and pin voltages

DC VOLTAGE

PIN SYMBOL

1 RIPPLE 2.1 2.1

(V)

AM FM

EQUIVALENT CIRCUIT

7

2 AM-RFI 0 0

3 RFGND1 −−
4 CGND 0 0
5 COUNTI 0 0

17

1

3 kΩ

4

2

5

1 kΩ

70 pF

MBE821

MBE822

6 AMOSC 0 0

7V

CC1

1995 Jun 23 18

3.0 3.0

4

6

4

MBE823

MBE824

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DC VOLTAGE

PIN SYMBOL

8 TUNE −−

(V)

AM FM

EQUIVALENT CIRCUIT

22

8

9 VCO 1.3 0.95

10 AFO 0.6 0.7

11 MPXI 1.23 1.23

26

9

17

10

17

150 kΩ 150 kΩ

MBE825

1 kΩ

10 kΩ

5 kΩ

MBE826

MBE827

1995 Jun 23 19

11

9.5 kΩ

17

MBE828

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DC VOLTAGE

PIN SYMBOL

12 LFI 0.1 0.8

(V)

AM FM

EQUIVALENT CIRCUIT

4 kΩ

13 MUTE 0.7 0.7

14 AFLO 0.65 0.65

12

17

7 kΩ 50 kΩ

13

17

14

5 kΩ

17

13 kΩ

MBE829

MBE830

MBE831

15 AFRO 0.65 0.65

1995 Jun 23 20

15

5 kΩ

17

MBE832

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DC VOLTAGE

PIN SYMBOL

16 PILFIL 0.95 0.95

(V)

AM FM

EQUIVALENT CIRCUIT

16

10 kΩ

10 kΩ

17 IFGND 0 0
18 FMDEM − 1.0

19 AFC
20 AFC

(n)
(p)

−−

−−

21 FSI −−

17

18

17

1.4 V

180 Ω

910 Ω

MBE834

10 kΩ 10 kΩ

19/20

MBE835

40 kΩ

MBE833

22 V
23 V

CC2
DDD

1995 Jun 23 21

21

12 to 34 kΩ
(dependent on
bits 16 and 17)

26

MBE836

−−

3.0 3.0

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DC VOLTAGE

PIN SYMBOL

24 MO/ST −−

(V)

AM FM

EQUIVALENT CIRCUIT

100 Ω

24

25 XTAL −−

26 DGND 0 0
27 BUS-CLOCK −−

26

25

26

27

26

MBE837

50 kΩ50 kΩ50 kΩ

MBE838

MBE839

28 DATA −−
29 WRITE-

ENABLE

1995 Jun 23 22

−−

100 Ω

28

50 kΩ

29
26

100 kΩ

MBE840

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DC VOLTAGE

PIN SYMBOL

30 P0 −−
31 P1 −−

(V)

AM FM

EQUIVALENT CIRCUIT

23

120 kΩ

30/31

20 kΩ

100 kΩ

32 AFC −−

33 FM-IF2I − 0.73

34 V

STAB(B)

1.4 1.4

26

34

20 kΩ

32

34

140 Ω

33

2.2 kΩ

17

7

1 kΩ

1

MBE841

MBE842

6 pF

MBE843

1995 Jun 23 23

34

MBE844

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DC VOLTAGE

PIN SYMBOL

35 FM-IFO1 − 0.69

(V)

AM FM

EQUIVALENT CIRCUIT

34

36 AM-IF2I/O 1.4 1.4

37 FM-IFI1 − 0.73

35

34

36

17

38

140 Ω

37

17

560 Ω

3.6 kΩ 3.6 kΩ

1.9 kΩ

MBE845

MBE846

6 pF

MBE847

38 V

STAB(A)

1.4 1.4

39 FM-ON/OFF −−

1995 Jun 23 24

7

1 kΩ

1

38

500 Ω

39

26

MBE848

MBE849

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DC VOLTAGE

PIN SYMBOL

40 AM-MIXER 1.4 1.4

(V)

AM FM

EQUIVALENT CIRCUIT

40
38

MBE850

41 AM-IF1I 1.4 1.4

42 RFGND2 0 0
43 n.c. −−
44 AGC 0.1 0.7

38

3 kΩ

41

17

1 kΩ

44

17

7.5 kΩ

1 kΩ

7.5 kΩ

MBE851

1 kΩ

MBE852

1995 Jun 23 25

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

TEST AND APPLICATION INFORMATION

DATA

(8)

K2

BUS-

CLOCK

WRITE-

ENABLE

STAB(B)

V

330 Ω

i4

V

50 Ω

CC1

V

100 nF

K1

(7)

1 nF

50 Ω

10.7 MHz

10 kΩ

21

1817272829333537

2.2 µF

16

MO/ST

470 nF

24

PILOT

DETECTOR

19 kHz

FM

DETECTOR

FM

IF2

FM

IF1

TUNER

SWITCH

39

FM-ON/OFF

2.2 kΩ

12

470 nF

50 kΩ

68 kΩ

9

PLL

38 kHz

AM/FM

INDICATOR

STATUS

38

34

7

STAB(A)VSTAB(B)

V

CC1

V

100 nF

12 nF

14

stereo

DECODER

IN-LOCK

DETECTOR

up

down

REGISTER

SHIFT REGISTER

STABILIZER

µF

100 

10 Ω

220 nF

100 nF

AFLO

AFRO

100 nF

12 nF

15

mono

MATRIX

stereo

level

FM

MEMORY

LAST-STATION

PRESCALER

5231

4

10

18 kΩ

4.7 µF

S4

BA

13

MUTE

SDS

PUMP

hard mute level

CHARGE

CIRCUIT

SEQUENTIAL

AM

COUNTER

PROGRAMMABLE

MULTIPLEXER

(6)

L6

pF

BB204

TUNE

8.2 kΩ

AFC

WINDOW

CRYSTAL

25

75 kHz

470 nF

20

19

TDA5762

DETECTOR

OSCILLATOR

26

DGND

STAB(B)

V

32

(1)

(5)

L5

V/I

AM

AGC

AM

AM

AM

AM

FRONT

2

L1

i1

V

50 Ω 43 Ω

CONVERTER

10 11 3

DETECTOR

IF

MIXER

6404136443130822

OSCILLATOR

END

680 pF

6.8 Ω

1 MHz

MBE814

MPXI

50 Ω

330 pF

i3

V

50 Ω

220 nF

S3

S2

A

B

(2)

A

470 nF 10 nF

(4)

10 µF

B

A

S1

L2

18 pF

18 pF

B

L4

220 µF

3 kΩ

(3)

L3

BB112

(1) L1 = 22281-30091.

(2) L2 = A7BRS-12287Y.

(3) L3 = A7MCS-11844N.

5 kΩ

CC2

V

P0 TUNEP1

STAB(B)

V

50 Ω

450 kHz

i2

V

STAB(A)

V

47 kΩ

470 pF

(4) L4 = A7MCS-11845Y.

(5) L5 = A7MCS-11845Y.

(6) L6 = S18 301SS-0200.

handbook, full pagewidth

Fig.8 Test circuit.

TUNE

(7) K1 = SFT10.7MS3.

(8) K2 = CDA10.7MC40-A.

1995 Jun 23 26

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

APPLICATION INFORMATION

AFLO

V

CC1

MO/ST

10 kΩ

470 nF

2.2 µF
24

16

470 nF

50 kΩ

2.2 kΩ
68 kΩ

9

12

12 nF

100 nF

14

AFRO

100 nF

15

12 nF

13

4.7 µF

470 nF

19

STAB(B)

V

(5)

L5

32

20

MBE816

STAB(A)

V

10 µF

(2)

220 nF

(3)

L2

330 pF

10 nF

470 nF

(4)

L3

18 pF

CC2

V

TUNE

P0

P1

L4

BB112

STAB(B)

V

STAB(A)

V

47 kΩ

handbook, full pagewidth

Fig.9 Application circuit.

TUNE

11 3

100 nF

21

CLOCK

WRITE-

ENABLE

1817

2728293335

TEA5762

37

(8)

K3

BUS-

DATA

STAB(B)

V

K2

(7)

K1

(6)

10

6404136443130822

150 Ω

220 Ω

150 Ω

CC

V

TUNE

IF-OUT

OSC-OUT

FM-Front end

Mitsumi FE415-G11

V

1995 Jun 23 27

470 pF

18 pF

7

CC1

10 Ω

23

100 nF

1

100 

µF

220 nF

38

68 kΩ

34

STAB(A)VSTAB(B)

V

V

39

470

n.c.

10 kΩ

150 kΩ

pF

ANT

220 kΩ

AGC

GND

4

5

25

26

120 Ω

75 kHz

GND

TUNE

BB112

47 kΩ

2

22 nF

18 pF

(1)

L1

(1) L1 = 250 µH ferroceptor.

(2) L2 = A7BRS-12287Y.

(3) L3 = A7MCS-11844N.

(4) L5 = A7MCS-11845Y.

(5) L4 = A7MCS-11845Y.

(6) K1 = SFT10.7MS3.

(7) K2 = SFT10.7MS3.

(8) K3 = CDA10.7MC40-A.

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

PACKAGE OUTLINE

QFP44: plastic quad flat package; 44 leads (lead length 1.3 mm); body 10 x 10 x 1.75 mm

c

y

X

A

33 23

34

pin 1 index

44

1

22

Z

E

e

H

E

E

w M

b

p

12

11

A

2

A

A

1

detail X

SOT307-2

Q

(A )

3

θ

L

p

L

w M

b

e

DIMENSIONS (mm are the original dimensions)

mm

OUTLINE
VERSION

SOT307-2

A

max.

2.10

0.25

0.05

1.85

1.65

UNIT A1A2A3b

Note

1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.

p

D

H

D

cE

p

0.40

0.20

0.25

0.14

0.25

IEC JEDEC EIAJ

Z

D

B

0 2.5 5 mm

scale

(1)

(1) (1)(1)

D

10.1

9.9

REFERENCES

eH

10.1

9.9

12.9

0.8 1.3

12.3

1995 Jun 23 28

v M

H

v M

D

A

B

LLpQZywv θ

E

12.9

12.3

0.95

0.55

0.85

0.75

0.15 0.10.15

EUROPEAN

PROJECTION

Z

D

1.2

1.2

0.8

0.8

ISSUE DATE

92-11-17
95-02-04

E

o

10

o

0

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

SOLDERING QFP or SO
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
cases 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 QFP and
SO packages.

The choice of heating method may be influenced by larger
plastic QFP packages (44 leads, or more). If infrared or
vapour phase heating is used and the large packages are
not absolutely dry (less than 0.1% moisture content by
weight), vaporization of the small amount of moisture in
them can cause cracking of the plastic body. For more
information, refer to the Drypack chapter in our

Reference Manual”

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 510 63011).

(order code 9398 652 90011).

“Quality

If wave soldering cannot be avoided, the following
conditions must be observed:

• A double-wave (a turbulent wave with high upward

pressure followed by a smooth laminar wave)
soldering technique should be used.

• The footprint must be at an angle of 45° to the board

direction and must incorporate solder thieves
downstream and at the side corners.

Even with these conditions, do not consider wave
soldering the following packages: QFP52 (SOT379-1),
QFP100 (SOT317-1), QFP100 (SOT317-2),
QFP100 (SOT382-1) or QFP160 (SOT322-1).

SO
Wave soldering techniques can be used for all SO

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.

ETHOD (QFP OR SO)

M
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.

Wave soldering

QFP
Wave soldering is not recommended for QFP packages.

This is because of the likelihood of solder bridging due to
closely-spaced leads and the possibility of incomplete
solder penetration in multi-lead devices.

1995 Jun 23 29

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 at 270 to 320 °C.

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

DEFINITIONS

Data sheet status

Objective specification This data sheet contains target or goal specifications for product development.
Preliminary specification This data sheet contains preliminary data; supplementary data may be published later.
Product specification This 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.

1995 Jun 23 30

Philips Semiconductors Preliminary specification

Self tuned radio TEA5762

NOTES

1995 Jun 23 31

Philips Semiconductors – a worldwide company

Argentina: IEROD, Av. Juramento 1992 - 14.b, (1428)

BUENOS AIRES, Tel. [phone], Fax. [phone]

Australia: 34 Waterloo Road, NORTH RYDE, NSW 2113,

Tel. [phone], Fax. [phone]

Austria: Triester Str. 64, A-1101 WIEN, P.O. Box 213,

Tel. [phone], Fax. [phone]

Belgium: Postbus 90050, 5600 PB EINDHOVEN, The Netherlands,

Tel. [phone], Fax. [phone]

Brazil: Rua do Rocio 220 - 5

CEP: 04552-903-SÃO PAULO-SP, Brazil.
P.O. Box 7383 (01064-970),
Tel. [phone], Fax. [phone]

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24-28 Kung Yip St., KWAI CHUNG, N.T.,
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Indonesia: Philips House, Jalan H.R. Rasuna Said Kav. 3-4,

P.O. Box 4252, JAKARTA 12950,
Tel. [phone], Fax. [phone]

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Tel. [phone], Fax. [phone]

Italy: PHILIPS SEMICONDUCTORS S.r.l.,

Piazza IV Novembre 3, 20124 MILANO,
Tel. [phone], Fax. [phone]

Japan: Philips Bldg13-37, Kohnan 2-chome, Minato-ku, TOKYO 108,

Tel. [phone], Fax. [phone]

Korea: Philips House, 260-199 Itaewon-dong,

Yongsan-ku, SEOUL, Tel. [phone], Fax. [phone]

Malaysia: No. 76 Jalan Universiti, 46200 PETALING JAYA,

SELANGOR, Tel. [phone], Fax. [phone]

Mexico: 5900 Gateway East, Suite 200, EL PASO, TX 79905,

Tel. [phone], Fax. [phone]

Netherlands: Postbus 90050, 5600 PB EINDHOVEN, Bldg. VB

Tel. [phone], Fax. [phone]

New Zealand: 2 Wagener Place, C.P.O. Box 1041, AUCKLAND,

Tel. [phone], Fax. [phone]

Norway: Box 1, Manglerud 0612, OSLO,

Tel. [phone], Fax. [phone]

th

floor, Suite 51,

Pakistan: Philips Electrical Industries of Pakistan Ltd.,

Exchange Bldg. ST-2/A, Block 9, KDA Scheme 5, Clifton,
KARACHI 75600, Tel. [phone],
Fax. [phone]

Philippines: PHILIPS SEMICONDUCTORS PHILIPPINES Inc,

106 Valero St. Salcedo Village, P.O. Box 2108 MCC, MAKATI,
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195-215 Main Road Martindale, 2092 JOHANNESBURG,
P.O. Box 7430, Johannesburg 2000,
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Tel. [phone], Fax. [phone]

Sweden: Kottbygatan 7, Akalla. S-164 85 STOCKHOLM,

Tel. [phone], Fax. [phone]

Switzerland: Allmendstrasse 140, CH-8027 ZÜRICH,

Tel. [phone], Fax. [phone]

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Road, Sec. 1. Taipeh, Taiwan ROC, P.O. Box 22978,
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209/2 Sanpavuth-Bangna Road Prakanong,
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Tel. [phone], Fax. [phone]

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Tel. [phone], Fax. [phone]

United Kingdom: Philips Semiconductors LTD.,

276 Bath Road, Hayes, MIDDLESEX UB3 5BX,
Tel. [phone], Fax. [phone]

United States:811 East Arques Avenue, SUNNYVALE,

CA 94088-3409, Tel. [phone], Fax. [phone]

Uruguay: Coronel Mora 433, MONTEVIDEO,

Tel. [phone], Fax. [phone]

Internet: http://www.semiconductors.philips.com/ps/
For all other countries apply to: Philips Semiconductors,

International Marketing and Sales, Building BE-p,
P.O. Box 218, 5600 MD EINDHOVEN, The Netherlands,
Telex 35000 phtcnl, Fax. [phone]

SCD40 © Philips Electronics N.V. 1995

All rights are reserved. Reproduction in whole or in part is prohibited without the
prior written consent of the copyright owner.

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.

Printed in The Netherlands

533061/1500/01/pp32 Date of release: 1995 Jun 23
Document order number: 9397 750 00178