Philips tea6310t DATASHEETS

INTEGRATED CIRCUITS

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TEA6310T

Sound fader control circuit

Product specification
File under Integrated Circuits, IC01

May 1992

Philips Semiconductors Product specification

Sound fader control circuit TEA6310T

FEATURES

• Volume and balance control; control range of 86 dB in
steps of 2 dB

• Bass and treble control from +15 dB (treble 12 dB)
to −12 dB in steps of 3 dB

• Fader control form 0 dB to −30 dB in steps of 2 dB

• Fast muting

• Low noise suitable for Dolby* B and C N R (noise

reduction)

• Signal handling suitable for compact disc

• I2C-bus control for all functions

• ESD protected.

QUICK REFERENCE DATA

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Supply voltage V
Input sensitivity for full power

at the output state V
Input signal handling V
Frequency response f
Channel separation

f = 250 Hz to 10 kHz α
Total harmonic distortion THD − 0,05 − %
Signal plus noise-to-noise ratio (S+N)/N − 80 − dB
Operating ambient temperature range T

GENERAL DESCRIPTION

The Sound Fader Control circuit (SOFAC) is an I2C-bus
controlled tone and volume control circuit for car radios.

CC

i(rms)
i(rms)

r

CS

amb

7,0 8,5 13,2 V

− 50 − mV

− 1,65 − V

35 − 20000 Hz

70 96 − dB

−40 −+85 °C

* Dolby is a registered trademark of Dolby Laboratories Licensing Corporation, San Francisco, California (U.S.A.).

PACKAGE OUTLINE

28-lead mini-pack; plastic (SO28; SOT136A); SOT136-1; 1996 August 08.

May 1992 2

Philips Semiconductors Product specification

Sound fader control circuit TEA6310T

May 1992 3

Fig.1 Block diagram.

Philips Semiconductors Product specification

Sound fader control circuit TEA6310T

PINNING

2

2

C-bus)

C-bus)

Fig.2 Pinning diagram.

1 SDA serial data input/output (l

2

2 GNDB ground for l

C-bus terminals
3 QLR output left rear
4 QLF output left front
5 TL treble control capacitor; left channel
6 BL1 bass control capacitor; left channel
7 BL0 bass control capacitor; left channel
8 i.c. internally connected

FAF fader off control input

9

10 i.c. internally connected
11 ELFI electronic filtering for supply
12 i.c. internally connected
13 i.c. internally connected
14 INL input left control part
15 INR input right control part
16 i.c. internally connected
17 i.c. internally connected
18 GND ground
19 i.c. internally connected
20 V

ref

reference voltage (1/2 VCC)
21 i.c. internally connected
22 BR0 bass control capacitor; right channel
23 BR1 bass control capacitor; right channel
24 TR treble control capacitor; right channel
25 QRF output right front
26 QRR output right rear
27 V

CC

supply voltage
28 SCL serial clock input (l

May 1992 4

Philips Semiconductors Product specification

Sound fader control circuit TEA6310T

FUNCTIONAL DESCRIPTION

The AC signal setting is performed by resistor chains in combination with multi-input operational amplifiers.
The advantage of this principle is the combination of low noise, low distortion and a high dynamic range for the circuit.

The separate volume controls of the left and the right channel facilitate correct balance control. The range and balance
control is software programmable.

Because the TEA6310T has four outputs a low level fader is included. The fader control is independent of the volume
control and an extra mute position is built in for the front, the rear or for all channels. The last function may be used for
muting during preset selection. The Fader function can be disabled by an input signal at FAF (pin 9).

An extra pop suppression circuit is built in for pop-free switching on and off. As all switching and control functions are
controllable via the two-wire I2C-bus, no external interface between the micro-computer and the TEA6310T is required.

The on-chip power-on-reset sets the TEA6310T to the general mute mode.

RATINGS

Limiting values in accordance with the Absolute Maximum System (IEC 134)

PARAMETER SYMBOL MIN. MAX. UNIT

Supply voltage (pin 27-18) V
Maximum power dissipation P
Storage temperature range T
Operating ambient temperature range T

CC
tot
stg
amb

− 16 V

− 1W

−55 +150 °C

−40 + 85 °C

May 1992 5

Philips Semiconductors Product specification

Sound fader control circuit TEA6310T

CHARACTERISTICS

= 8,5 V; RS = 600 Ω; RL = 10 kΩ; f = 1 kHz; T

V

CC

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Supply voltage V
Supply current I
Supply current at 8,5 V I
Supply current at 13,2 V I
DC voltage inputs, outputs and reference V
Internal reference voltage (pin 20); V

= 0,5 V

ref

Maximum voltage gain, bass and treble linear, fader off G
Output voltage level

for P

at the output stage V

max

for start of clipping V

Input sensitivity at V

= 500 mV V

o

Frequency response bass and treble linear; roll-off
frequency −1 dB

Channel separation

= 0 dB; bass and treble linear;

G

v

frequency range 250 Hz to 10 kHz α

Total harmonic distortion

frequency range 20 Hz to 12,5 kHz

= 50 mV; Gv = 20 dB THD − 0,1 0,3 %

V

i

= 500 mV; Gv = 0 dB THD − 0,05 0,2 %

V

i

= 1,6 V; Gv = −10 dB THD − 0,2 0,5 %

V

i

Ripple rejection

< 200 mV; Gv = 0 dB;

V

r(rms)

bass and treble linear;
at f = 100 Hz RR
at f = 40 Hz to 12,5 kHz RR

Signal-to-noise ratio;

bass and treble linear; notes 1 and 2;
CCIR 468-2 weighted; quasi peak;

= 50 mV; Vo= 46 mV; Po= 50 mW S/(S + N) − 65 − dB

V

i

= 500 mV; Vo= 45 mV; Po= 50 mW S/(S + N) − 67 − dB

V

i

= 50 mV; Vo= 200 mV; Po= 1 W S/(S + N) 65 72 − dB

V

i

V

= 500 mV; Vo= 200 mV; Po= 1 W S/(S + N) 65 78 − dB

i

= 50 mV, Vo= 500 mV; Po= 6 W S/(S + N) − 72 − dB

V

i

= 500 mV; Vo= 500 mV; Po= 6 W S/(S + N) − 86 − dB

V

i

Noise output power

mute position, only contribution of
TEA310T, power amplifier for 25 W P

= 25 °C; test circuit Fig.10; unless otherwise specified

amb

7,0 8,5 13,2 V

− 26 − mA

−−30 mA

−−44 mA

0,45 0,5 0,55 V

− 4,25 − V
19 20 21 dB

− 500 − mV

− 1000 − mV

− 50 − mV

35 − 20000 Hz

70 96 − dB

− 70 − dB

− 60 − dB

−−10 nW

CC

CC
CC
CC
CC

DC

V

REF

v

o(rms)

o(rms)

i(rms)

f

r

CS

no

100
range

CC

May 1992 6

Philips Semiconductors Product specification

Sound fader control circuit TEA6310T

PARAMETER SYMBOL MIN. TYP. MAX. UNIT

Crosstalk (20 log V

bus(p-p)/Vo(rms)

between bus inputs and signal outputs

= 0 dB; bass and treble linear; α

G

v

Control part

Input impedance Z
Output impedance Z
Output load resistance R
Output load capacity C
Maximum input voltage;

THD < 0,5%; G

= −10 dB;

v

bass and treble linear V

Noise output voltage;

weighted acc CClR 468-2, quasi peak,
bass and treble linear, fader off;

= 20 dB V

G

v

= 0 dB V

G

v

= −66 dB V

G

v

mute position V

Volume control

Continuous control range G
Step resolution − 2 − dB
Attenuator set error;

= + 20 to −50 dB) ∆G

(G

v

Attenuator set error;

= + 20 to −66 dB) ∆G

(G

v

Gain tracking error; balance in mid position, bass and
treble linear

Mute attenuation α
DC step offset
Between any adjoining step and any step to mute

= 0 to −66 dB − 0,2 10 mV

G

v

= 20 to 0 dB − 215mV

G

v

In any treble and fader position

= 0 to −66 dB −−10 mV

G

v

In any bass position

= 0 to −66 dB −−20 mV

G

v

)

− 110 − dB

35 50 65 kΩ

− 100 150 Ω
5 −−kΩ
0 − 2500 pF

− 2,0 − V

− 110 220 µV

− 25 50 µV

− 19 38 µV

− 11 22 µV

− 86 − dB

−−2dB

−−3dB

−−2dB

76 90 − dB

∆G

B

i

o

L

L

i(rms)

no

no

no

no

c

a

a
t

m

May 1992 7