Philips TEA5711T-N2, TEA5711-N2 Datasheet

DATA SH EET

Product speciﬁcation Supersedes data of October 1992 File under Integrated Circuits, IC01

September 1994

INTEGRATED CIRCUITS

Philips Semiconductors

TEA5711; TEA5711T

AM/FM stereo radio circuit

September 1994 2

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

FEATURES

• Wide supply voltage range: 1.8 or 2.1 to 12 V

• Low current consumption: 15 mA at AM, 16 mA at FM

• High selectivity with distributed IF gain

• LED driver for stereo indication

• High input sensitivity: 1.6 mV/m (AM), 2.0 µV (FM) for

26 dB S/N

• Good strong signal behaviour: 10 V/m at AM, 500 mV at FM

• Low output distortion: 0.8% at AM, 0.3% at FM

• Signal level output

• Soft mute

• Signal dependent stereo

• Designed for simple and reliable printed-circuit board

layout

• High impedance MOSFET input on AM.

APPLICATIONS

• Portable AM/FM stereo radio

• Mini/midi receiver sets

• Personal headphone radio.

DESCRIPTION

The TEA5711 is a high performance Bimos IC for use in AM/FM stereo radios. All necessary functions are integrated: from AM and FM front-end to AM detector and FM stereo output stages.

QUICK REFERENCE DATA

ORDERING INFORMATION

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. TYP.

dynamic supply voltage 1.8 − 12 V

static supply voltage 2.1 − 12 V

supply current

AM mode 11.9 15.0 18.9 mA FM mode 13.5 16.5 20.2 mA

amb

operating ambient temperature −15 − +60 °C

AM performance

in1

RF sensitivity 40 55 70 µV

AF output voltage 36 45 70 mV

THD total harmonic distortion − 0.8 2.0 %

FM performance

in3

RF sensitivity 1.0 2.0 3.8 µV

AF output voltage 50 61 72 mV

THD total harmonic distortion − 0.3 0.8 %

MPX performance

channel separation 26 30 − dB

MPX

MPX voltage gain V

AF-L/Vin9

; S5 in position MONO −1.5 0 +1.0 dB

THD total harmonic distortion − 0.5 1.0 %

TYPE NUMBER

PACKAGE

NAME DESCRIPTION VERSION

TEA5711 SDIP32 plastic shrink dual in-line package; 32 leads (400 mil) SOT232-1

TEA5711T SO32 plastic small outline package; 32 leads; body width 7.5 mm SOT287-1

September 1994 3

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

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BLOCK DIAGRAM

Fig.1 Block diagram.

September 1994 4

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

PINNING

SYMBOL PIN DESCRIPTION

n.c. 1 not connected AF-L

2 left channel audio output (output impedance typ. 4.3 kΩ)

AF-R

3 right channel audio output (output impedance typ. 4.3 kΩ) PILFIL 4 pilot detector ﬁlter pin FM-DEM 5 ceramic discriminator pin IFGND 6 ground of IF, detector and MPX stages FM-IF2

7 second FM-IF input (input impedance typ. 330 Ω) VSTAB

8 stabilized internal supply voltage (B) FM-IF1

9 ﬁrst FM-IF output (output impedance typ. 330 Ω) AM-IF2

I/O

10 input/output to IFT; output: current source

FM-IF1

11 ﬁrst FM-IF input (input impedance typ. 330 Ω)

VSTAB

12 stabilized internal supply voltage (A) FM-MIXER 13 output to ceramic IF ﬁlter (output impedance typ. 330 Ω) AM-MIXER 14 open-collector output to IFT AM-IF1

15 input from IFT or ceramic ﬁlter (input impedance typ. 3 kΩ) FM-RF

16 FM-RF aerial input (input impedance typ. 50 Ω) RFGND 17 FM-RF ground AM-RF

18 parallel tuned AM aerial circuit to ground (total input capacitance typ. 3 pF) RIPPLE 19 ripple capacitor pin AM-AGC/FM-AFC 20 AGC/AFC capacitor pin FM-RF

21 parallel tuned FM-RF circuit to ground SUBGND 22 substrate and RF ground FM-OSC 23 parallel tuned FM-oscillator circuit to ground AM-OSC 24 parallel tuned AM-oscillator circuit to ground V

25 positive supply voltage IND 26 signal level output VCO/AM-FM SWITCH 27 VCO and switch terminal: open for AM; ground for FM AF

28 AM/FM AF output (output impedance typ. 5 kΩ) MPX

29 input for stereo decoder (input impedance typ. 180 kΩ) ST-LED 30 stereo indicator LPF-M/S 31 pin for loop-ﬁlter and mono/stereo switch MUTE 32 mute pin

September 1994 5

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

Fig.2 Pin configuration; TEA5711. Fig.3 Pin configuration; TEA5711T.

September 1994 6

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

FUNCTIONAL DESCRIPTION

The AM circuit incorporates a double balanced mixer, a one pin low-voltage oscillator (up to 30 MHz) a field-strength indicator output 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.

The first AM selectivity can be an IFT as well as an IFT combined with a ceramic filter; the second one is an IFT.

The FM circuit incorporates a tuned RF stage, a double balanced mixer, a one-pin oscillator, a field-strength indicator output and is designed for distributed IF ceramic filters. The FM quadrature detector uses a ceramic resonator.

The PLL stereo decoder incorporates a signal dependent stereo circuit, a soft-mute circuit and a stereo indicator LED driver.

Supply voltage behaviour

The TEA5711 incorporates internal stabilized power supplies. The maximum supply voltage is 12 V, the minimum voltage can go down temporarily to 1.8 V without any loss in performance.

Due to the capacitor at pin 19 (RIPPLE) the IC gives excellent performance, even when the actual supply voltage at pin 25 (V

) drops below the voltage at pin 19

(RIPPLE). Figures 4, 5 and 6 show that V

stab

, which is dominant for

the overall IC performance, remains unaffected, even if V

drops down to 1.8 V or less. In this typical example the static or average VP is equal to 2.5 V. Dips in V

stab

appear only when the peak-to-peak value of the AC-component of VP> 2 V, i.e. when the dynamic value of VP drops down to

1.5 V for a short moment.

Fig.4 Supply voltage behaviour; VP as a

function of time.

Fig.5 Supply voltage behaviour; V

ripple

as a

function of time.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

Fig.6 Supply voltage behaviour; V

stab

as a

function of time.

BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB

September 1994 7

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

LIMITING VALUES

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

THERMAL CHARACTERISTICS

SYMBOL PARAMETER MIN. MAX. UNIT

supply voltage 0 12 V

stg

storage temperature −55 +150 °C

amb

operating ambient temperature −15 +60 °C

junction temperature −15 +150 °C

SYMBOL PARAMETER VALUE UNIT

th j-a

thermal resistance from junction to ambient in free air

SDIP32 54 K/W SO32 68 K/W

September 1994 8

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

CIRCUIT DESIGN DATA

PIN NO. PIN SYMBOL

DC PIN VOLTAGE (V)

EQUIVALENT CIRCUIT

AM FM

1 n.c. −−

AF-L

output

0.65 0.65

AF-R

output

0.65 0.65

4 PILFIL 0.95 0.95

5 FM-DEM − 1.0

6 IFGND 0 0

September 1994 9

Philips Semiconductors Product speciﬁcation

AM/FM stereo radio circuit TEA5711; TEA5711T

FM-IF2

input

− 0.73

8 VSTAB

1.4 1.4

FM-IF1

output

− 0.69

AM-IF2

I/O

input/output

1.4 1.4

PIN NO. PIN SYMBOL

DC PIN VOLTAGE (V)

EQUIVALENT CIRCUIT

AM FM

BBBB BBBB

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Philips TEA5711T-N2, TEA5711-N2 Datasheet

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