SGS Thomson Microelectronics TDA7407 Datasheet

®

TDA7407

ADVANCED CAR SIGNAL PROCESSOR

FULLY INTEGRATED SIGNAL PROCESSOR
OPTIMIZED FOR CAR RADIO APPLICA­TIONS

FULLY PROGRAMMABLE BY I2C BUS
INCLUDES AUDIOPROCESSOR, STEREO -

DECODER WITH NOISE BLANKER AND
MULTIPATH DETECTOR

SOFTMUTE FUNCTION
PROGRAMMABLE ROLL-OFF COMPENSA-

TION
NO EXTERNAL COMPONE NTS

DESCRIPTION

The TDA7407 is the newcomer of the CSP family
introduced by TDA7460/61. It uses the same in­novative concepts and design technologies allow­ing fully software programmability through I
bus and overall cost optimisation for the system
designer.

The device includes a three band audioprocessor
with configurable inputs and absence of external

BLOCK DIAGRAM

2

TQFP44

ORDERING NUMBER:

components for filter settings, a last generation
stereodecoder with multipath detector and a so-

C

phisticated stereoblend and noise cancellation
circuitry.
Strength points of the CSP approach are flexibility
and overall cost/room saving in the application,
combined with high performances.

TDA7407

June 2001

1/30

TDA7407

ABSOLUTE MAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

T

amb

T

stg

SUPPLY

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

S

I

S

SVRR Ripple Rejection @ 1KHz Audioprocessor (all filters flat) 50 60 dB

ESD

All pins are protected against ESD according to the MIL883 standard.

PIN CONNECTION

Operating Supply Voltage 10.5 V
Operating Ambient Temperature Range -40 to 85 °C
Operating Storage Temperature Range -55 to 150 °C

Supply Voltage 7.5 9 10 V
Supply Current VS = 9V 30 35 40 mA

Stereodecoder + Audioprocessor 45 55 dB

THERMAL DATA

CDR

CDROUT

CDGND

CDLOUT

CDL
N.C.

PHONE-

PHONE+

AFS

AM

N.C.

TAPE L

CREF

N.C.

LEVEL

REF

V

ACINRF

ACINLF

ACINRR

171118 19 20 21 22

N.C.

MPIN

MPOUT

MUXL

ACINLR

MUXR

TAPE R

44 43 42 41 3940 38 37 36 35 34

1
2
3
4
5
6
7
8
9

10

12 13 14 15 16

MPX

N.C.

N.C.

ACOUTL

ACOUTR

33
32
31
30
29
28
27
26
25
24
23

PINCON-TDA7407

QUAL

SMUTE

N.C.
OUT LF
OUT RF
OUT LR
OUT RR
N.C.
V

S

GND
N.C.
SDA
SCL

Symbol Parameter Value Unit

R

th-j pins

Thermal Resistance Junction-pins Max 85 °C/W

2/30

TDA740 7

PIN DESCRIPTION

N. Name Function Type

1 CDR CD Right Channel Input I
2 CDROUT CD Output Right Channel O
3 CDGND CD Input Common Ground I
4 CDLOUT CD Output Left Channel O
5 CDL CD Input Left Channel I
6nc ­7 PH - Differential Phone Input - I
8 PH + Differential Phone Input + I

9 AFS AFS Drive I
10 AM AM Input I
11 nc ­12 MPX FM Stereodecoder Input I
13 nc ­14 LEVEL Level Input Stereodecoder I
15 MPIN Multipath Input I
16 MPOUT Multipath Output O
17 nc ­18 MUXL Multiplexer Output Left Channel O
19 MUXR Multiplexer Output Right Channel O
20 nc ­21 QUAL Stereodecoder Quality Output O
22 SMUTE Soft Mute Drive I
23 SCL I
24 SDA I
25 nc ­26 GND Supply Ground S
27 VS Supply Voltage S
28 nc ­29 OUTRR Right Rear Speaker Output O
30 OUTLR Left Rear Speaker Output O
31 OUTRF Right Front Spaeaker Output O
32 OUTLF Left Front Speaker Output O
33 nc ­34 ACOUTR Pre-speaker AC Output Right Channel O
35 ACOUTL Pre-speaker AC Output Left Channel O
36 nc ­37 ACINLR Pre-speaker Input Left Rear Channel I
38 ACINRR Pre-speaker Input Right Rear Channel I
39 ACINRF Pre-speaker Input Right Front Channel I
40 ACINLF Pre-speaker Input Left Front Channel I
41 VREF Reference Voltage Output O
42 CREF Reference Capacitor Pin S
43 TAPEL Tape Input Left I
44 TAPER Tape Input Right I

Pin type legenda: I = Input O = Output I/O = Input/Output S = Supply nc = not connected

2

C Clock Line I

2

C Data Line I/O

3/30

TDA7407

AUDIO PROCESSOR PART

Input Multiplexer

Quasi-differential CD and cassette stereo input
AM mono input
Phone differential input
Multiplexer signal after In-Gain available at

separate pins

Volume control

1dB attenuator
Max. gain 15dB
Max. attenuation 79dB

Bass Control

2nd order frequency response
Center frequency programmable in 4(5) steps
DC gain programmable
±15 x 1dB steps

ELECTRICAL CHARACTERISTICS (V

S

= 9V; T

unless otherwise specified).

Mid Control

2nd order frequency response
Center frequency programmable in 4 steps
Q-factor programmable in 2 steps
±15 x 1dB steps

Treble Control

2nd order frequency response
Center frequency programmable in 4 steps
±15 x 1dB steps

Speaker Control

4 independent speaker controls in 1dB steps
max gain 15dB
max. attenuation 79dB

Mute Functions

Direct mute

Digitally controlled softmute with 4 programmable
mute time.

amb

= 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz;

Symbol Parameter Test Condition Min. Typ. Max. Unit

INPUT SELECTOR

G

G

G

R

in

V

CL

S

IN
IN MIN
IN MAX

STEP

V

DC

Input Resistance all inputs except Phone [phone] K
Clipping Level 2.2 2.6 V
Input Separation 80 100 dB
Min. Input Gain -1 0 1 dB
Max. Input Gain 13 15 17 dB
Step Resolution 0.5 1 1.5 dB
DC Steps Adjacent Gain Step -5 0.5 5 mV

G

MIN

to G

MAX

-10 5 10 mV

DIFFERENTIAL CD STEREO INPUT

R

in

CMRR Common Mode Rejection Ratio V

e

N

Input Resistance Differential 70 100 130 K

Common Mode 70 100 130 K

Output Noise @ Speaker
Outputs

= 1

CM

V

= 1

CM

20Hz to 20KHz flat; all stages
0dB

@ 1KHz 45 70 dB

VRMS

@ 10KHz 45 60 dB

VRMS

615

DIFFERENTIAL PHONE INPUT

R

in

CMRR Common Mode Rejection Ratio V

Input Resistance Differential 40 56 K

= 1

CM

V

= 1

CM

@ 1KHz 40 70 dB

VRMS

@ 10KHz 40 60 dB

VRMS

VOLUME CONTROL

G

A

A

MAX
MAX

STEP

E

A

Max Gain 13 15 17 dB
Max Attenuation 70 79 dB
Step Resolution 0.5 1 1.5 dB
Attenuation Set Error G = -20 to 20dB -1.25 0 1.25 dB

G = -60 to 20dB -4 0 3 dB

Ω

RMS

Ω
Ω

V

µ

Ω

4/30

TDA740 7

ELECTRICAL CHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

E

T

V

DC

SOFT MUTE/AFS

A

MUTE

T

D

V

TH low

V

TH high

R

PD

BASS CONTROL

C

RANGE

A

STEP

f

C

Q

BASS

DC

GAIN

MID CONTROL

C

RANGE

A

STEP

f

C

Q

MID

TREBLE CONTROL

C

RANGE

A

STEP

f

C

1) The SM pin is active low (Mute = 0)

2) See note in Programming Part

Tracking Error 2dB
DC Steps Adjacent Attenuation Steps 0.1 3 mV

From 0dB to G

MIN

0.5 5 mV

Mute Attenuation 80 100 dB
Delay Time T1 0.48 ms

T2 0.96 ms
T3 40.4 ms
T4 324 ms

Low Threshold for SM-/AFS- Pin

1

1V
High Threshold for SM-/AFS-Pin 2.5 V
Internal Pull-up Resistor 45 K

Control Range

13

±

15

±

17 dB

±

Step Resolution 0.5 1 1.5 dB
Center Frequency f

Quality Factor Q

C1

f

C2

f

C3

f

C4

1

Q

2

Q

3

Q

4

54 60 66 Hz
63 70 77 Hz
72 80 88 Hz
90 100

(150)

(2)

110 Hz

0.9 1 1.1

1.11.251.4

1.3 1.5 1.7

1.8 2 2.2

Bass-Dc-Gain DC = off -1 0 1 dB

DC = on 3.5 4.4 5.5 dB

Control Range

13

±

15

±

17 dB

±

Step Resolution 0.5 1 1.5 dB
Center Frequency f

Quality Factor Q

Control Range

C1

f

C2

f

C3

f

C4

1

Q

2

450 500 550 Hz

0.9 1 1.1 kHz

1.35 1.5 1.65 kHz

1.8 2 2.2 kHz

0.9 1 1.1

1.8 2 2.2

13

±

15

±

17 dB

±

Step Resolution 0.5 1 1.5 dB
Center Frequency f

C1

f

C2

f

C3

f

C4

8 10 12 KHz
10 12.5 15 KHz
12 15 18 KHz
14 17.5 21 KHz

Ω

5/30

TDA7407

ELECTRICAL CHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

SPEAKER AT T ENUATORS

R

IN

G

MAX

A

MAX

A

STEP

A

MUTE

E

E

V

DC

AUDIO OUTPUTS

V

CLIP

R

L

C

L

R

OUT

V

DC

GENERAL

e

NO

S/N Signal to Noise Ratio all gain = 0dB flat; VO = 2V

d Distortion VIN = 1V

S

C

E

T

BUS INPUT S

V

IL

V

IH

I

IN

V

O

Input Impedance 35 50 65 K
Max Gain 13 15 17 dB
Max Attenuation -70 -79 dB
Step Resolution 0.5 1 1.5 dB
Output Mute Attenuation 80 90 dB
Attenuation Set Error

2dB

±

DC Steps Adjacent Attenuation Steps 0.1 5 mV

Clipping Level d = 0.3% 2.2 2.6 V
Output Load Resistance 2 K
Output Load Capacitance 10 nF
Output Impedance 30 120
DC Voltage Level 4.3 4.5 4.7 V

Output Noise BW = 20 Hz to 20 KHz

315

output muted
BW = 20 Hz to 20 KHz

6.5 15

all gain = 0dB

102 110 dB

96 100 dB

bass treble at 12dB;
a-weighted; V

= 1V

V

IN

= 2.6V

O

; all stages 0dB 0.002 0.1 %

RMS

; Bass & Treble = 12dB 0.05 0.1 %

RMS

RMS

RMS

Channel separation Left/Right 80 100 dB
Total Tracking Error AV = 0 to -20dB -1 0 1 dB

= -20 to -60dB -2 0 2 dB

A

V

Input Low Voltage 0.8 V
Input High Voltage 2.5 V
Input Current VIN = 0.4V -5 5
Output Voltage SDA

IO = 1.6mA 0.4 V

Acknowledge

Ω

RMS

Ω

Ω

V

µ

V

µ

A

µ

6/30

Stereodecoder Part

TDA7407

ELECTRICAL CHARACTERISTICS (V

MPX

= 500mV(75KHz deviation), fm= 1KHz, Gv = 6dB, T

V

S

= 9V; deemphasis time constant = 50µs,

amb

= 27°C; unless otherwise specified).

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

in

R

in

G

MIN

G

MAX

G

STEP

SVRR Supply Voltage Ripple

MPX Input Level Gv = 3.5dB 0.5 1.25 V
Input Resistance 70 100 130 K
Min. Input Gain 1.5 3.5 4.5 dB
Max. Input Gain 8.5 11 12.5 dB
Step Resolution 1.75 2.5 3.25 dB

= 100mV; f = 1KHz 35 60 dB

V

ripple

Rejection

α

Max. channel Separation 30 50 dB

THD Total Harmonic Distortion 0.02 0.3 %
S+N

N

Signal plus Noise to Noise
Ratio

A-weighted, S = 2V

rms

80 91 dB

MONO/STEREO-SWITCH

V

PTHST1

V

PTHST0

V

PTHMO1

V

PTHMO0

Pilot Threshold Voltage for Stereo, PTH = 1 10 15 25 mV
Pilot Threshold Voltage for Stereo, PTH = 0 15 25 35 mV
Pilot Threshold Voltage for Mono, PTH = 1 7 12 17 mV
Pilot Threshold Voltage for Mono, PTH = 1 10 19 25 mV

PLL

f/f Capture Range 0.5 %

∆

RMS

Ω

DEEMPHASIS and HIGHCUT

τ

τ

τ

τ

HC50

HC75

HC50

HC75

Deemphasis Time Constant Bit 7, Subadr, 10 = 0,

V

>> V

LEVEL

HCH

Deemphasis Time Constant Bit 7, Subadr, 10 = 1,

V

>> V

LEVEL

HCH

Highcut Time Constant Bit 7, Subadr, 10 = 0,

V

>> V

LEVEL

HCL

Highcut Time Constant Bit 7, Subadr, 10 = 1,

V

>> V

LEVEL

HCL

25 50 75

50 75 100

100 150 200

150 225 300

STEREOBLEND-and HIGHCUT-CONT ROL

REF5V Internal Reference Voltage 4.7 5 5.3 V

TC

REF5V

L

Gmin

L

Gmax

L

Gstep

VSBL
VSBL
VSBL
VHCH

VHCH
VHCH

VHCL
VHCL
VHCL

Temperature Coefficient 3300 ppm
Min. LEVEL Gain -1 0 1 dB
Max. LEVEL Gain 8 10 12 dB
LEVEL Gain Step Resolution 0.3 0.67 1 dB
Min. Voltage for Mono 25 29 33 %REF5V

min

Min. Voltage for Mono 54 58 62 %REF5V

max

Step Resolution 2.2 4.2 6.2 %REF5V

step

Min. Voltage for NO Highcut 38 42 46 %REF5V

min

Min. Voltage for NO Highcut 62 66 70 %REF5V

max

Step Resolution 5 8.4 12 %REF5V

step

Min. Voltage for FULL Highcut 12 17 22 %VHCH

min

Max. Voltage for FULL Highcut 28 33 38 %VHCH

max

Step Resolution 2.2 4.2 6.2 %VHCH

step

s

µ

s

µ

s

µ

s

µ

7/30

TDA7407

ELECTRICAL CHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

Carrier and harmonic suppression at the output

19 Pilot Signal f = 19KHz 40 50 dB

α

38 Subcarrier f = 38KHz 75 dB

α

57 Subcarrier f = 57KHz 62 dB

α

α76

Intermodulation (Note 1)

2f

α

3f

α

Traffic Ratio (Note 2)

57 Signal f = 57KHz 70 dB

α

SCA - Subsidiary Communications Authoorization (Note 3)

67 Signal f = 67KHz 75 dB

α

ACI - Adjacent Channel Interference (Note 4)

114 Signal f = 114KHz 95 dB

α

190 Signal f = 190KHz 84 dB

α

Notes to the characteristics:

1. Intermodulation Suppression: α2 =

α3 =

measured with: 91% pilot signal; fm = 10kHz or 13kHz.

Subcarrier f = 76KHz 90 dB

= 10KHz, f

mod

= 13KHz, f

mod

= 1KHz 65 dB

spur

= 1KHz 75 dB

spur

V

O(signal)(at1KHz

V

O(spurious)(at

V

O(signal)(at1KHz

V

O(spurious)(at

)

; fs = (2 x 10KHz) − 19KHz

1KHz

)

)

; fs = (3 x 13KHz) − 38KHz

1KHz

)

2. Traffic Radio (V.F.) Suppression: measured with: 91% stereo signal; 9% pilot signal; fm=1kHz; 5% subcarrier (f = 57kHz,
fm = 23Hz AM, m = 60%)

α57 (V.W>F.

) =

V

O

(

spurious

O

at

)(

1KHz

(

+

23KHz

⁄

−

)

)

V

signal)(at1KHz

3. SCA ( Subsidiary Communications Authorization ) measured with: 81% mono signal; 9% pilot signal; fm = 1kHz; 10%SCA - subcarrier
( fs = 67kHz, unmodulated ).

V

O

at1KHz

(

)(

α67

signal

=

V

O

(

spurious

)(

9KHz

at

)

F

;

= (2 x 38KHz) −67KHz

S

)

4. ACI ( Adjacent Channel Interference ): α114 =

α190 =

O(signal)(at1KHz

V

O(spurious)(at

V

O(signal)(at1KHz

V

O(spurious)(at

)

; FS = 110KHz − (3 x 38KHz

4KHz

)

)

; FS = 186KHz − (5 x 38KHz

4KHz

)

)

)

V

measured with: 90% mono signal; 9% pilot signal; fm =1kHz; 1% spurious signal ( fs = 110kHz or 186kHz, unmodulated).

8/30

NOISE BLANKER PART

TDA7407

internal 2nd order 140kHz high pass filter
programmable trigger threshold
trigger threshold dependent on high frequency

noise with programmable gain
additional circuits for deviation and field-

very low offset current during hold time due to
opamps wMOS inputs

four selectable pulse suppression times
programmable noise rectifier charge/discharge

current

strength dependent trigger adjustment

ELECTRICAL CHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

TR

V

TRNOISE

Trigger Threshold

Noise Controlled Trigger
Threshold

V

RECT

V

RECT DEV

Rectifier Voltage V

deviation dependent
rectifier Voltage

V

RECT FS

Fieldstrength Controlled
Rectifier Voltage

T

V

RECTADJ

S

Suppression Pulse
Duration

5)

Noise Rectifier
discharge adjustment

SR

PEAK

(c) = by design/characterization functionally guaranteed through dedicated test mode structure

Noise Rectifier Charge Signal PEAK in

0) 1)

meas. with V

= 0.9V NBT = 111 (c) 30 (c) mV

PEAK

NBT = 110 (c) 35 (c) mV
NBT = 101 (c) 40 (c) mV
NBT = 100 (c) 45 (c) mV
NBT = 011 (c) 50 (c) mV
NBT = 010 (c) 55 (c) mV
NBT = 001 (c) 60 (c) mV
NBT = 000 (c) 65 (c) mV

2)

meas. with V

= 1.5V NCT = 00 (c) 260 (c) mV

PEAK

NCT = 01 (c) 220 (c) mV
NCT = 10 (c) 180 (c) mV
NCT = 11 (c) 140 (c) mV

= 0mV NRD

MPX

= 50mV; f = 150KHz 1.5 1.7 2.1 V

V

MPX

= 200mV; f = 150KHz 2.2 2.5 2.9 V

V

MPX

3)

means. with
V

= 800mV

MPX

(75KHz dev.)

6)

= 00 0.5 0.9 1.3 V

OVD = 11 0.5 0.9(off) 1.3 V
OVD = 10 0.9 1.2 1.5 V
OVD = 01 1.7 2.0 2.3 V
OVD = 00 2.5 2.8 3.1 V

4)

means. with
V

= 0mV

MPX

V

<< V

LEVEL

SBL

(fully mono)
Signal HOLDN

in Testmode

FSC = 11 0.5 0.9(off) 1.3 V
FSC = 10 0.9 1.4 1.5 V
FSC = 01 1.7 1.9 2.3 V
FSC = 00 2.1 2.4 3.1 V
BLT = 00 TBD 38 TBD
BLT = 10 TBD 32 TBD
BLT = 01 TBD 25.5 TBD
BLT = 00 TBD 22 TBD

Signal PEAK in

6)

Testmode

Testmode

NRD = 00
NRD = 01
NRD = 10
NRD = 11

PCH = 0
PCH = 1

6)

(c) 0.3 (c) V/ms

6)

(c) 0.8 (c) V/ms

6)

(c) 1.3 (c) V/ms

6)

(c) 2.0 (c) V/ms

7)

(c) 10 (c) mV/µs

7)

(c) 20 (c) mV/µs

OP
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP
OP

OP
OP
OP
OP

s

µ

s

µ

s

µ

s

µ

9/30