TEA5762H [NXP]

Self Tuned Radio STR; 自调谐收音机STR


型号：	TEA5762H
厂家：	NXP
描述：	Self Tuned Radio STR 自调谐收音机STR 消费电路商用集成电路接收器集成电路
文件：	总32页 (文件大小：174K)
中文：	中文翻译
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INTEGRATED CIRCUITS

DATA SHEET

TEA5762

Self Tuned Radio (STR)

Product speciﬁcation

1999 Aug 04

Supersedes data of 1995 Jun 23

File under Integrated Circuits, IC01

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

FEATURES

• High impedance MOSFET input on AM

• Wide supply voltage range of 2.5 to 12 V

• 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

• Low current consumption 18 mA at AM and FM

(including tuning synthesizer for AM)

• Low noise figure

• The tuning quality is superior and requires no IF-counter

for stop-detection; it is insensitive to ceramic filter

tolerances

• Low output distortion

• Due to the new tuning concept, the tuning is

independent of the channel spacing.

• In combination with the microcontroller, fast, low-power

operation of preset mode, manual-search, auto-search

and auto-store are possible

GENERAL DESCRIPTION

• The local (internal) controller function facilitates reduced

and simplified microcontroller software

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.

• 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)

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.

• The inherent FUZZY LOGIC behaviour of the Self

Tuned Radio (STR), which mimics hand tuning and

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

ORDERING INFORMATION

TYPE

PACKAGE

NUMBER

NAME

DESCRIPTION

VERSION

TEA5762H

QFP44

plastic quad ﬂat package; 44 leads (lead length 1.3 mm);

SOT307-2

body 10 × 10 × 1.75 mm

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

QUICK REFERENCE DATA

SYMBOL

PARAMETER

supply voltage

CONDITIONS

MIN.

2.5

TYP.

MAX.

UNIT

V_CC1

V_CC2

V_tune

I_CC1

−

supply voltage for tuning

tuning voltage

−

0.7

−

_CC2− 0.75

supply current

AM mode

3.3

2.7

−

µA

FM mode

AM mode

FM mode

I_DD

supply current

−

I_CC2

supply current for tuning in preset

mode (band-end to band-end)

−

800

T_amb

ambient temperature

−15

−

+60

°C

AM performance; note 1

V₁₀

V_i1

AF output voltage

V_i1= 5 mV

S/N = 26 dB

V_i1= 1 mV

−

0.8

2.0

µV

RF sensitivity input voltage

total harmonic distortion

THD

FM performance; note 2

V₁₀

V_i4

AF output voltage

V_i4= 5 mV

IF sensitivity input voltage

V₁₀= −3 dB; V₁₀= 0 dB

−

µV

at V_i4= 10 mV

THD

total harmonic distortion

IF ﬁlter

−

0.3

0.8

SFE10.7MS3A20K-A

MPX performance; note 3

α_cs

channel separation

V_i4= 30 mV

−

Notes

1. V_CC1= 3 V; V_CC2= 12 V; V_DDD= 3 V; f_i= 1 MHz; m = 0.3; f_mod= 1 kHz; measured in Fig.9 with S1 in position A; S2

in position B; unless otherwise speciﬁed.

2. V_CC1= 3 V; V_CC2= 12 V; V_DDD= 3 V; f_i= 10.7 MHz; ∆f_m= 22.5 kHz; f_m= 1 kHz; measured in Fig.9 with S2 in

position A; S3 in position A; unless otherwise speciﬁed.

3. V_CC1= 3 V; V_CC2= 12 V; V_DDD= 3 V; V_{i3(L + R)}= 155 mV; V_pilot= 15.5 mV; f_i= 1 kHz; measured in Fig.9 with S2 in

position B; S3 in position B; unless otherwise speciﬁed.

1999 Aug 04

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FM-IFI2

WRITE-

ENABLE

DATA

BUS-

CLOCK

IFGND FMDEM FSI

FM-IFI1

FM-IFO1

PILFIL

MO/ST

TUNER

SWITCH

IF1

IF2

DETECTOR

PILOT

DETECTOR

FM-ON/OFF

19 kHz

PLL

38 kHz

DECODER

stereo

LFI

STAB(A)

VCO

AM/FM

INDICATOR

STAB(B)

STATUS

CC1

SHIFT REGISTER

STABILIZER

DDD

RIPPLE

IN-LOCK

down DETECTOR

level

AFLO

AFRO

LAST-STATION

MEMORY

MATRIX

COUNTI

PRESCALER

stereo mono

SEQUENTIAL

CIRCUIT

CHARGE

PUMP

SDS

PROGRAMMABLE

COUNTER

CGND

MULTIPLEXER

MUTE

hard mute

AFC

level

XTAL

CRYSTAL

OSCILLATOR

WINDOW

DETECTOR

TEA5762

DGND

AFC

(n)

AFC

(p)

AFC

FRONT

END

V/I

CONVERTER

MIXER

DETECTOR

AGC

AM-RFI

OSCILLATOR

40 41

22 10

MBE815

AMOSC

AM-MIXER

AM-IFI/O2

AGC

P1 P0

TUNE

AFO RFGND MPXI RFGND

AM-IFI1

CC2

ahdnbok,uflapegwidt

Fig.1 Block diagram.

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

PINNING

SYMBOL

DESCRIPTION

RIPPLE

AM-RFI

RFGND

CGND

ripple capacitor input

AMRF input

RF ground and substrate

counter ground

COUNTI

AMOSC

V_CC1

counter input

parallel tuned AM-oscillator circuit to ground

supply voltage

TUNE

tuning output current

VCO

voltage controlled oscillator input

AM/FM AF output (output impedance typical 5 kΩ)

stereo decoder input (input impedance typical 150 kΩ)

loop ﬁlter input

AFO

MPXI

LFI

MUTE

mute input

AFLO

left channel output (output impedance typical 4.3 kΩ)

right channel output (output impedance typical 4.3 kΩ)

pilot detector ﬁlter input

AFRO

PILFIL

IFGND

FMDEM

AFC_(n)

AFC_(p)

FSI

ground of IF, detector and MPX stage

ceramic discriminator input

AFC negative output

AFC positive output

ﬁeld strength indicator

V_CC2

supply voltage for tuning

V_DDD

digital supply voltage

MO/ST

XTAL

mono/stereo and tuning indication output

crystal input

DGND

BUS-CLOCK

DATA

digital ground

bus-clock input

bus data input/output

WRITE-ENABLE

bus write-enable input

programmable output port (P0)

programmable output port (P1)

450 kHz LC-input circuit for AM AFC

FMIF input 2 (input impedance typical 330 Ω)

internal stabilized supply voltage (B)

FMIF output 1 (input impedance typical 330 Ω)

input/output to IFT; output: current source

FMIF input 1 (input impedance typical 330 Ω)

internal stabilized supply voltage (A)

FM ON/OFF port

AFC

FM-IFI2

V_STAB(B)

FM-IFO1

AM-IFI/O2

FM-IFI1

V_STAB(A)

FM-ON/OFF

AM-MIXER

open-collector output to IFT

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

SYMBOL

DESCRIPTION

AM-IFI1

RFGND

n.c.

IFT or ceramic ﬁlter input (input impedance typical 3 kΩ)

FMRF ground

not connected

AGC

AGC capacitor input

handbook, full pagewidth

RIPPLE

AM-RFI

RFGND

CGND

33 FM-IFI2

AFC

COUNTI

AMOSC

29 WRITE-ENABLE

TEA5762H

DATA

BUS-CLOCK

CC1

TUNE

VCO

DGND

25 XTAL

AFO 10

MPXI 11

24 MO/ST

23 V

DDD

MBE820

Fig.2 Pin configuration.

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

FUNCTIONAL DESCRIPTION

PRESET OPERATION

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.

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 the STR.

The internal algorithm controls the tuning sequence as

follows:

The radio

1. The information is loaded into a shift register, a

last-station memory and the counter.

The AM circuit incorporates a double balanced mixer, a

one-pin low-voltage oscillator (up to 30 MHz) and is

designed for distributed selectivity.

2. The Automatic Frequency Control (AFC) is switched

off.

3. The counter starts counting the VCO frequency and

the tuning voltage is varied until the desired frequency

roughly equals the real frequency.

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.

4. The AFC is then switched on and the counter is

switched off.

The first AM selectivity can be an IF-Tank (IFT) as well as

an IFT combined with a ceramic filter; the second one is an

IFT.

5. The real frequency is more precisely tuned to the

desired frequency.

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.

After the AFC has tuned the real frequency to the desired

frequency an in-lock signal can be generated. In order to

get 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).

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.

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.

The PLL stereo decoder incorporates a signal dependent

stereo-blend circuit and a soft-mute circuit.

In the event of fading or pulling the in-lock signal becomes

logic 0 and the synthesizer will be switched-on again and

the algorithm will be repeated.

Tuning

SEARCH OPERATION

The tuning-concept of Self Tuned Radio (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.

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 the

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

microcontroller decides whether the frequency is within the

desired frequency band. If so, this frequency can be stored

under a preset and if not, a new search action should be

started.

The tuning algorithm, which is controlled by the sequential

circuit (see Fig.1), is completely integrated; so there are

only a few external components needed.

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.

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

To ensure that the search function operates correctly

under all conditions the following search sequence must

be applied:

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.

• Store the current frequency in the memory

• Issue the search command

Table 2 Bus-clock functions

• Wait for data valid and read the new frequency

BUS-CLOCK

MO/ST (PIN 24)

RESULT

stereo

• If the new frequency is the same as the stored

frequency, issue a pre-set step (e.g. 50 kHz) and start

the search sequence again.

LOW

HIGH

LOW

HIGH

LOW

HIGH

mono

tuned

Description of the bus

not tuned

The TEA5762 radio has a bus which consists of three

wires, as shown in Table 1.

The TEA5762 has a 25-bit shift register; see Table 3 for an

explanation of the shift register bits.

Table 1 Bus signals

If in search mode no transmitter can be found, all

frequency bits of the shift register are set to logic 0.

SIGNAL

DESCRIPTION

BUS-CLOCK

DATA

software driven clock input

data input/output

The bus protocol is depicted in Figs 3 and 4.

WRITE-ENABLE write/read-input

Table 3 Explanation of the shift register bits

LOGIC

STATE

BIT

DESCRIPTION

RESULT

S.24 (MSB)

search start/end

after a search when a station is found or after a preset

during the search action

D.23

M.22

search up/down

mono/stereo

indicates if the radio has to search down

indicates if the radio has to search up

stereo is allowed

mono is required (radio switched to forced mono)

selects FM/MW/LW/SW band

B0.21

B1.20

P0.19

band

port

see Table 4

note 1

selects FM/MW/LW/SW band

user programmable bits which e.g. can be used as band

switch driver

P1.18

S0.17

S1.16

port

note 1

user programmable bits which e.g. can be used as band

switch driver

search-level of station

see Table 5

determines the locking ﬁeld strength during an

automatic search, automatic store or manual search

determines the locking ﬁeld strength during an

automatic search, automatic store or manual search

dummy

−

buffer

F.14 to F.0 (LSB)

frequency

determine the tuning frequency of the radio; see Table 6

for the bit values

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

Note

Table 6 Values for bits 14 to 0

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):

VALUE⁽¹⁾

(kHz)

VALUE⁽²⁾

(kHz)

BIT

BIT VALUE

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.

2¹⁴

2¹³

2¹²

2¹¹

2¹⁰

2⁹

2⁸

2⁷

2⁶

2⁵

−

102400

51200

25600

12800

6400

3200

1600

800

16384

8192

4096

2048

1024

512

256

128

Table 4 Truth table for bits 21 and 20

BAND SELECT

FM⁽¹⁾

400

2⁴

200

2³

2²

2¹

100

Note

1. When FM is selected, the control output FM-ON/OFF

is set LOW to switch on the external FM front-end.

2⁰

12.5

Table 5 Truth table for bits 16 and 17

Notes

SIGNAL RECEPTION⁽¹⁾

1. FM value of the affected oscillators:

FM VALUE = FMRF + FMIF.

FM IF INPUT

AM RF INPUT

(µV)

2. AM value of the affected oscillators:

AM VALUE = AMRF + AMIF.

>50

>100

>300

>1500

>28

>40

>63

>1000

Note

1. The given values for signal reception are

corresponding to a −3 dB point of 20 µV for FM.

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

READING DATA

WRITING 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).

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 read the entire shift register 24 clock pulses are

necessary.

To write the entire shift register 25 clock pulses are

necessary.

handbook, full pagewidth

WRITE-ENABLE

data read

BUS-CLOCK

DATA

data available

MBE817

data available after search ready

MSB is LOW

data shift

Fig.3 Read data.

handbook, full pagewidth

WRITE-ENABLE

BUS-CLOCK

DATA

MBE818

data shift

data change

Fig.4 Write data.

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

BUS TIMING

handbook, full pagewidth

WRITE-ENABLE

BUS-CLOCK

HIGH LOW

DATA

MBE819

Fig.5 Bus timing.

Table 7 Digital inputs

SYMBOL

PARAMETER

MIN.

MAX.

UNIT

Digital inputs

V_IH

V_IL

HIGH-level input voltage

LOW-level input voltage

1.4

−

0.6

Timing

f_clk

clock input

−

300

−

kHz

µs

t_HIGH

t_LOW

t_da

clock HIGH time

clock LOW time

1.67

−

µs

shift register available after ‘search ready’

µs

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

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

supply voltage

13.2

250

total power dissipation

T_amb= 70 °C

−

°C

storage temperature

−65

−15

−

+150

+60

operating ambient temperature

operating junction temperature

electrostatic handling for all pins

+150

±200

V_es

note 1

Note

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

THERMAL CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

VALUE

UNIT

R_th(j-a)

thermal resistance from junction to ambient in free air

K/W

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

CHARACTERISTICS

V_CC1= 3 V; T_amb= 25 °C; unless otherwise speciﬁed.

SYMBOL

V_CC1

PARAMETER

supply voltage

CONDITIONS

MIN.

2.5

TYP.

MAX.

UNIT

−

V_CC2

V_DDD

V_tune

I_CC2

supply voltage for tuning

supply voltage for digital part

tuning voltage

−

2.5

0.7

−

_CC2− 0.75 V

supply current for tuning in preset

mode (band-end to band-end)

800

µA

f_{BUS-CLOCK(max)}maximum BUS-CLOCK frequency

I_CC1current consumption during acquisition AM mode

−

300

18.5

−

kHz

12.5

−

of V_CC1

FM mode

15.5

4.8

5.5

I_DD

current consumption during acquisition AM mode

of I_DD

FM mode

−

I_CC1

current consumption after acquisition

of V_CC1

AM mode

FM mode

AM mode

FM mode

−

I_DD

current consumption after acquisition

of I_DD

3.2

2.7

−

t_search

t_acq

synthesizer auto-search time for empty FM mode

band

−

synthesizer preset acquisition time

between two band limits

−

100

200

500⁽¹⁾

−

f_band

frequency band range of the

synthesizer

AM mode

0.144

MHz

∆f_FM

AFC inaccuracy of FM

with Mitsumi

front-end

−

kHz

∆f_AM

AFC inaccuracy of AM

−

100

I_P0/P1(sink)

sink current of software programmable V_CC1= 5 V

output P0/P1

−

I_{P0/P1(source)}

source current of software

programmable output P0/P1

V_CC1= 5 V

−

Note

1. Depending on band.

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

AM CHARACTERISTICS

Input frequency = 1 MHz; m = 0.3; f_mod= 1 kHz; measured in test circuit at pin 10 (see Fig.9); S2 in position B;

V_i1measured 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.9); unless otherwise speciﬁed.

SYMBOL

V₁₀

PARAMETER

AF output voltage

CONDITIONS

V_i1= 5 mV

MIN.

TYP.

MAX.

UNIT

V_i1

V_il

RF sensitivity

S/N = 26 dB

µV

large signal voltage handling

capacity

m = 0.8; THD ≤ 8%

150

300

−

PSRR

power supply ripple rejection

V₁₀

∆V₇= 100 mV (RMS);

100 Hz; V₇= 3.0 V

−

−47

−

----------

∆V₇

I_i

input current (pin 2)

V₄₄= 0.2 V

−

µA

C_i

G_c

input capacitance (pin 2)

front-end conversion gain

−

−14

0.8

V₄₄= 0.9 V

−26

−

S/N

signal-to-noise ratio

total harmonic distortion

IF suppression

−

THD

α₄₅₀

V_i1= 1 mV

−

2.0

−

V₁₀= 30 mV

−

FM-IF CHARACTERISTICS

Input frequency = 10.7 MHz; ∆f = 22.5 kHz; f_mod= 1 kHz; measured in test circuit (see Fig.9) at pin 10; S2 in position B;

refer to test circuit (see Fig.9); unless otherwise speciﬁed.

SYMBOL

V₁₀

PARAMETER

AF output voltage

CONDITIONS

V_i4= 10 mV

MIN.

TYP.

MAX.

UNIT

V_i4

IF limiting sensitivity

V₁₀= −3 dB; V₁₀= 0 dB at

−

µV

V_i4= 10 mV

PSRR

power supply ripple rejection

V₁₀

∆V₇= 100 mV (RMS);

100 Hz; V₇= 3.0 V

−44

−

----------

∆V₇

S/N

signal-to-noise ratio

V_i4= 10 mV

−

THD

total harmonic distortion

IF ﬁlter SFE10.7MS3A20K-A −

0.3

0.8

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

STEREO DECODER CHARACTERISTICS

V_{i3(L + R)}= 155 mV; V_pilot= 15.5 mV; f = 1 kHz; apply unmodulated RF-signal of 100 mV to front-end to set radio to

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

SYMBOL

PARAMETER

AF output voltage

CONDITIONS

MIN.

TYP.

160

MAX. UNIT

V_14/15

−

V_pilot(s)

V_pilot(m)

switch to stereo

switch to mono

−

V_AF-L/V_i3MPX voltage gain

−1.5

−

+1.5

−

S/N

THD

α_cs

α₁₉

α₃₈

signal-to-noise ratio

_pilot= 15.5 mV (stereo)

0.5

total harmonic distortion

channel separation

−

1.0

−

carrier and harmonic suppression

19 kHz (200 mV) = 0 dB

38 kHz

−

stereo-blend

V_i4= 5 mV

−

V_i4= 200 µV

mute(s)

soft mute depth

V_i4= 30 µV; V₁₄= V₁₅

V_i4= 10 µV; V₁₄= V₁₅

−1

−

−6

−10

TUNING CHARACTERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX. UNIT

V_FM

FM voltage levels

_{−3 dB}-point at V_i4= 20 µV

S0 = 1; S1 = 1

high (auto-store/search)

medium (auto-store/search)

low (auto-store/search)

600

100

1500

300

100

5000

550

200

µV

S0 = 0; S1 = 1

S0 = 1; S1 = 0

nominal (preset mode/tuning indication)

AM voltage levels

S0 = 0; S1 = 0

V_AM

_{−3 dB}-point at V_i4= 20 µV

S0 = 1; S1 = 1

high (auto-store/search)

medium (auto-store/search)

low (auto-store/search)

400

1000

2500

µV

S0 = 0; S1 = 1

S0 = 1; S1 = 0

nominal (preset mode/tuning indication)

AFC voltage off mode

S0 = 0; S1 = 0

V_AFC(off)

mute(h)

_{−3 dB}-point at V_i4= 20 µV

FM mode

−

µV

AM mode

hard mute

WRITE-ENABLE = HIGH

1999 Aug 04

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handbook, full pagewidth

(dBµV)

−20

100

120

THD

(dB)

(%)

(1)

−10

−20

−30

−40

−50

−60

−70

−80

(2)

(3)

−7

−6

−5

−4

−3

−2

−1

(V)

MBE853

(1) Audio signal.

(2) Noise.

(3) Harmonic distortion.

Fig.6 AM mode.

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(dBµV)

100

120

(dB)

THD

(1)

(%)

(3)

(4)

−10

−20

−30

−40

−50

−60

−70

−80

(2)

(5)

(6)

(7)

−6

−5

−4

−3

−2

−1

(V)

MBE854

(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.

Fig.7 FM mode.

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

INTERNAL CIRCUITRY

Table 8 Equivalent pin circuits and pin voltages

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

RIPPLE

2.1

1 kΩ

3 kΩ

70 pF

MBE821

AM-RFI

MBE822

RFGND

CGND

−

COUNTI

MBE823

AMOSC

MBE824

V_CC1

3.0

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

TUNE

−

MBE825

VCO

1.3

0.95

1 kΩ

10 kΩ

MBE826

AFO

0.6

0.7

5 kΩ

MBE827

MPXI

1.23

150 kΩ

9.5 kΩ

MBE828

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

LFI

0.1

0.8

4 kΩ

13 kΩ

MBE829

MUTE

AFLO

AFRO

0.7

7 kΩ 50 kΩ

MBE830

0.65

5 kΩ

MBE831

0.65

5 kΩ

MBE832

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

PILFIL

0.95

10 kΩ

MBE833

IFGND

FMDEM

−

1.0

180 Ω

910 Ω

MBE834

AFC_(n)

AFC_(p)

−

10 kΩ

19/20

MBE835

FSI

−

1.4 V

40 kΩ

12 to 34 kΩ

(dependent on

bits 16 and 17)

MBE836

V_CC2

V_DDD

−

3.0

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

MO/ST

−

100 Ω

MBE837

XTAL

−

50 kΩ

MBE838

DGND

BUS-CLOCK

−

MBE839

DATA

−

100 Ω

WRITE-

ENABLE

100 kΩ

50 kΩ

MBE840

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

−

120 Ω

100 kΩ

20 kΩ

MHA108

−

120 Ω

100 kΩ

20 kΩ

MHA109

AFC

−

20 kΩ

MBE842

FM-IF12

−

0.73

140 Ω

6 pF

2.2 kΩ

MBE843

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

V_STAB(B)

1.4

1 kΩ

MBE844

FM-IFO1

−

0.69

560 Ω

MBE845

AM-IFI/O2

1.4

3.6 kΩ

MBE846

FM-IFI1

−

0.73

140 Ω

6 pF

1.9 kΩ

MBE847

V_STAB(A)

1.4

1 kΩ

MBE848

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

DC VOLTAGE

(V)

SYMBOL

EQUIVALENT CIRCUIT

FM-ON/OFF

−

500 Ω

MBE849

AM-MIXER

1.4

MBE850

AM-IF1I

3 kΩ

7.5 kΩ

MBE851

RFGND2

n.c.

−

AGC

0.1

0.7

1 kΩ

MBE852

1999 Aug 04

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STAB(A)

FM front-end

Mitsumi FE415-G11

(6)

OSC-OUT

150 Ω

220 Ω

IF-OUT

STAB(B)

(7)

TUNE

DATA

220 kΩ

(8)

GND

AGC

n.c.

BUS-

WRITE-

CLOCK

ENABLE

100 nF

470

150 kΩ

10 kΩ

ANT

CC1

2.2 µF

10 kΩ

68 kΩ

MO/ST

470 nF

2.2 kΩ

STAB(A)

STAB(B)

CC1

10 Ω

470 nF

100 nF

68 kΩ

100

µF

50 kΩ

220 nF

12 nF

(11)

TEA5762

100 nF

AFLO

AFRO

120 Ω

100 nF

12 nF

(11)

(10)

75 kHz

4.7 µF

GND

470 nF

TUNE

47 kΩ

(9)

BB112

22 nF

STAB(B)

(1)

18 pF

220 nF

10 nF

10 µF

(5)

(2)

18 pF

(3)

470 nF

(4)

18 pF

330 pF

(9)

MBE816

BB112

470 pF

TUNE

CC2

STAB(B)

47 kΩ

STAB(A)

TUNE

See Table 9 for figure notes.

Fig.8 Application diagram.

ahdnbok,uflapegwidt

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DATA

STAB(B)

50 Ω

330 Ω

50 Ω

BUS-

CLOCK

WRITE-

ENABLE

(8)

CC1

(7)

10.7 MHz

100 nF

1 nF

10 kΩ

2.2 µF

TUNER

SWITCH

IF1

IF2

DETECTOR

PILOT

DETECTOR

FM-ON/OFF

MO/ST

470 nF

2.2 kΩ

19 kHz

PLL

38 kHz

DECODER

stereo

470 nF

STAB(A)

AM/FM

INDICATOR

STAB(B)

68 kΩ

STATUS

50 kΩ

CC1

SHIFT REGISTER

STABILIZER

10 Ω

(11)

100 nF

100

µF

12 nF

IN-LOCK

down DETECTOR

level

100 nF

220 nF

AFLO

AFRO

LAST-STATION

MEMORY

MATRIX

PRESCALER

(11)

stereo mono

18 kΩ

12 nF

SEQUENTIAL

CIRCUIT

CHARGE

PUMP

SDS

PROGRAMMABLE

COUNTER

(6)

TUNE

MULTIPLEXER

MUTE

BB804

4.7 µF

hard mute

AFC

level

75 kHz

(9)

CRYSTAL

OSCILLATOR

WINDOW

DETECTOR

8.2 kΩ

DGND

TEA5762

470 nF

(1)

STAB(B)

FRONT

END

50 Ω

43 Ω

MIXER

DETECTOR

V/I

(5)

AGC

OSCILLATOR

CONVERTER

1 MHz

680 pF

6.8 Ω

40 41

22 10

(2)

10 µF

18 pF

470 nF 10 nF

(4)

330 pF

18 pF

3 kΩ

220 nF

(10)

50 Ω

220 µF

50 Ω

(3)

BB112

5 kΩ

50 Ω

MPXI

470 pF

450 kHz

47 kΩ

STAB(A)

STAB(B) P1 P0

TUNE

CC2

MBE814

See Table 9 for figure notes.

TUNE

ahdnbok,uflapegwidt

Fig.9 Test circuit.

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

Table 9 Test and application components

FIGURE NOTE

DESCRIPTION

Application diagram; see Fig.8

L1 = 250 mH ferroceptor

L2 = 7P 7DRS-11459N, 110 µH at 796 kHz, Q = 80 TOKO

L3 = 7PA7MCS-11844N, C = 180 pF, Q = 90 TOKO

L4 = 7PA7MCS-11845Y, C = 180 pF, Q = 90 TOKO

L5 = 7PA7MCS-11845Y, C = 180 pF, Q = 90 TOKO

K1 = SFE10.7MS3 MURATA

K2 = SFE10.7MS3 MURATA

K3 = CDA10.7-MG40-A discriminator ∆f = 20 kHz MURATA

alternatively BB512 (Siemens) or KV1561A TOKO

standard application: ±30 ppm at T_amb= 25 °C

short wave application: ±20 ppm at T_amb= 25 °C

de-emphasis time constant is 50 µs: C_deem= 12 nF

de-emphasis time constant is 75 µs: C_deem= 18 nF

Test circuit; see Fig.9

K1 = SFE10.7MS3 MURATA

K2 = CDA10.7-MG40-A discriminator ∆f = 20 kHz MURATA

L1 = 22281-30091

L2 = 7P 7DRS-11459N, 110 µH at 796 kHz, Q = 80 TOKO

L3 = 7PA7MCS-11844N, C = 180 pF, Q = 90 TOKO

L4 = 7PA7MCS-11845Y, C = 180 pF, Q = 90 TOKO

L5 = 7PA7MCS-11845Y, C = 180 pF, Q = 90 TOKO

L6 = S18 301SS-0200

standard application: ±30 ppm at T_amb= 25 °C

short wave application: ±20 ppm at T_amb= 25 °C

alternatively BB512 (Siemens) or KV1561A TOKO

de-emphasis time constant is 50 µs: C_deem= 12 nF

de-emphasis time constant is 75 µs: C_deem= 18 nF

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

PACKAGE OUTLINE

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

SOT307-2

(A )

w M

pin 1 index

detail X

w M

2.5

5 mm

scale

DIMENSIONS (mm are the original dimensions)

(1)

UNIT

max.

10^o

0^o

0.25 1.85

0.05 1.65

0.40 0.25 10.1 10.1

0.20 0.14 9.9 9.9

12.9 12.9

12.3 12.3

0.95

0.55

1.2

0.8

1.2

0.8

2.10

0.25

0.8

1.3

0.15 0.15 0.1

Note

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

REFERENCES

OUTLINE

EUROPEAN

PROJECTION

ISSUE DATE

VERSION

IEC

JEDEC

EIAJ

95-02-04

97-08-01

SOT307-2

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

SOLDERING

• Use a double-wave soldering method comprising a

turbulent wave with high upward pressure followed by a

smooth laminar wave.

Introduction to soldering surface mount packages

This text gives a very brief insight to a complex technology.

A more in-depth account of soldering ICs can be found in

our “Data Handbook IC26; Integrated Circuit Packages”

(document order number 9398 652 90011).

• For packages with leads on two sides and a pitch (e):

– larger than or equal to 1.27 mm, the footprint

longitudinal axis is preferred to be parallel to the

transport direction of the printed-circuit board;

There is no soldering method that is ideal for all surface

mount IC packages. Wave soldering is not always suitable

for surface mount ICs, or for printed-circuit boards with

high population densities. In these situations reflow

soldering is often used.

– smaller than 1.27 mm, the footprint longitudinal axis

must be parallel to the transport direction of the

printed-circuit board.

The footprint must incorporate solder thieves at the

downstream end.

Reﬂow soldering

• For packages with leads on four sides, the footprint must

be placed at a 45° angle to the transport direction of the

printed-circuit board. The footprint must incorporate

solder thieves downstream and at the side corners.

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.

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.

Several methods exist for reflowing; for example,

infrared/convection heating in a conveyor type oven.

Throughput times (preheating, soldering and cooling) vary

between 100 and 200 seconds depending on heating

method.

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.

Typical reflow peak temperatures range from

215 to 250 °C. The top-surface temperature of the

packages should preferable be kept below 230 °C.

Manual soldering

Wave soldering

Fix the component by first soldering two

diagonally-opposite end leads. Use a low voltage (24 V or

less) soldering iron applied to the flat part of the lead.

Contact time must be limited to 10 seconds at up to

300 °C.

Conventional single wave soldering is not recommended

for surface mount devices (SMDs) or printed-circuit boards

with a high component density, as solder bridging and

non-wetting can present major problems.

When using a dedicated tool, all other leads can be

soldered in one operation within 2 to 5 seconds between

270 and 320 °C.

To overcome these problems the double-wave soldering

method was specifically developed.

If wave soldering is used the following conditions must be

observed for optimal results:

1999 Aug 04

Philips Semiconductors

Product speciﬁcation

Self Tuned Radio (STR)

TEA5762

Suitability of surface mount IC packages for wave and reﬂow soldering methods

SOLDERING METHOD

PACKAGE

WAVE

REFLOW⁽¹⁾

BGA, SQFP

not suitable

suitable

HLQFP, HSQFP, HSOP, HTSSOP, SMS not suitable⁽²⁾

PLCC⁽⁴⁾, SO, SOJ

LQFP, QFP, TQFP

SSOP, TSSOP, VSO

suitable

not recommended⁽⁴⁾⁽⁵⁾

not recommended⁽⁶⁾

Notes

1. All surface mount (SMD) packages are moisture sensitive. Depending upon the moisture content, the maximum

temperature (with respect to time) and body size of the package, there is a risk that internal or external package

cracks may occur due to vaporization of the moisture in them (the so called popcorn effect). For details, refer to the

Drypack information in the “Data Handbook IC26; Integrated Circuit Packages; Section: Packing Methods”.

2. These packages are not suitable for wave soldering as a s

3. older joint between the printed-circuit board and heatsink (at bottom version) can not be achieved, and as solder may

stick to the heatsink (on top version).

4. If wave soldering is considered, then the package must be placed at a 45° angle to the solder wave direction.

The package footprint must incorporate solder thieves downstream and at the side corners.

5. Wave soldering is only suitable for LQFP, TQFP and QFP packages with a pitch (e) equal to or larger than 0.8 mm;

it is definitely not suitable for packages with a pitch (e) equal to or smaller than 0.65 mm.

6. Wave soldering is only suitable for SSOP and TSSOP packages with a pitch (e) equal to or larger than 0.65 mm; it is

definitely not suitable for packages with a pitch (e) equal to or smaller than 0.5 mm.

DEFINITIONS

Data sheet status

Objective speciﬁcation

Preliminary speciﬁcation

Product speciﬁcation

This data sheet contains target or goal speciﬁcations for product development.

This data sheet contains preliminary data; supplementary data may be published later.

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.

1999 Aug 04

Philips Semiconductors – a worldwide company

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

Tel. +31 40 27 82785, Fax. +31 40 27 88399

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Pakistan: see Singapore

Belgium: see The Netherlands

Brazil: see South America

Philippines: Philips Semiconductors Philippines Inc.,

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Metro MANILA, Tel. +63 2 816 6380, Fax. +63 2 817 3474

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Portugal: see Spain

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Tel. +65 350 2538, Fax. +65 251 6500

Slovakia: see Austria

Slovenia: see Italy

Denmark: Sydhavnsgade 23, 1780 COPENHAGEN V,

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Date of release: 1999 Aug 04

Document order number: 9397 750 06057

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