TDA7400D
®
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
PROGRAMMABLE ROLL-OFF COMPENSATION
NO EXTERNAL COMPONENTS
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ORDERING NUMBER: TDA7400D
DESCRIPTION
The TDA7400D 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 I2C
bus and overall cost optimisation for the system
designer.
The device includes an audioprocessor with configurable inputs and absence of external components for filter settings, a last generation
)
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6
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CassR
CassL
Ph-
Ph+
4
3
5
let
so
AM
10
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CDL CDGND CDR
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stereodecoder with multipath detector and a sophisticated 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.
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BLOCK DIAGRAM
7
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SMUTE
ACOUTL
18
28
27
MONO-FADER
MONO-FADER
VOLUME
SOFT
MUTE
TREBLE
BASS
MONO-FADER
MONO-FADER
INPUT
MULTIPLEXER
+
AUTO ZERO
8
ACOUTR
26
23
25
19
I2C BUS
DIGITAL CONTROL
20
16
MUXR
9
24
15
MUXL
OUT LR
OUT LF
OUT RR
OUT RF
SCL
SDA
MUX R
MUX L
FM_R
FM_L
MPX
11
PILOT
CANCELLATION
80KHz
LP
DEMODULATOR
+ STEREO ADJUST
+ STEREO BLEND
25KHz
LP
HIGH
CUT
S&H
QUAL.
VDD
VREF
22
1
SUPPLY
21
GND
October 2003
PLL
2
CREF
17
QUAL
D
PIL
DET
MULTIPATHDETECTOR
13
MPIN
FM NOISE
BLANKER
14
MPOUT
PULSE
FORMER
A
12
LEVEL
D99AU1046
1/28
TDA7400D
ABSOLUTE MAXIMUM RATINGS
Symbol
VS
Tamb
Tstg
Parameter
Value
Operating Supply Voltage
Unit
10.5
V
Operating Ambient Temperature Range
-40 to 85
°C
Operating Storage Temperature Range
-55 to 150
°C
SUPPLY
Symbol
VS
IS
SVRR
Parameter
Test Condition
Supply Voltage
Supply Current
V
mA
)
s
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ct
50
60
45
55
VREF
1
CREF
2
)
(s
ACOUTL
27
ACOUTR
26
OUT LF
25
OUT RF
5
24
OUT LR
CDGND
6
23
OUT RR
CDL
7
22
VDD
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4
CDR
dB
dB
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28
3
CassL
CassR
O
Unit
10
35
Audioprocessor (all filters flat)
PIN CONNECTION
bs
Max.
9
30
Stereodecoder + Audioprocessor
ESD
All pins are protected against ESD according to the MIL883 standard.
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Typ.
7.5
25
VS = 9V
Ripple Rejection @ 1KHz
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Min.
Ph-
8
21
GND
Ph+
9
20
SDA
AM
10
19
SCL
MPX
11
18
SMUTE
LEVEL
12
17
QUAL
MPIN
13
16
MUX R
MPOUT
14
15
MUX L
D99AU1047
THERMAL DATA
Symbol
Rth-j pins
2/28
Parameter
Thermal Resistance Junction-pins
Max
Value
Unit
85
°C/W
TDA7400D
PIN DESCRIPTION
N.
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
Name
VREF
CREF
TAPEL
TAPER
CDR
CDGND
CDL
PH PH +
AM
MPX
LEVEL
MPIN
MPOUT
MUXL
MUXR
QUAL
SMUTE
SCL
SDA
GND
VS
OUTRR
OUTLR
OUTRF
OUTLF
ACOUTR
ACOUTL
Function
Reference Voltage Output
Reference Capacitor Pin
Tape Input Left
Tape Input Right
CD Right Channel Input
CD Input Common Ground
CD Input Left Channel
Differential Phone Input Differential Phone Input +
AM Input
FM Stereodecoder Input
Level Input Stereodecoder
Multipath Input
Multipath Output
Multiplexer Output Left Channel
Multiplexer Output Right Channel
Stereodecoder Quality Output
Soft Mute Drive
I2C Clock Line
I2C Data Line
Supply Ground
Supply Voltage
Right Rear Speaker Output
Left Rear Speaker Output
Right Front Spaeaker Output
Left Front Speaker Output
Pre-speaker AC Output Right Channel
Pre-speaker AC Output Left Channel
)
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Type
I
S
I
I
I
I
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I
I
I
I
I
I
O
O
O
O
I
I
I/O
S
S
O
O
O
O
O
O
P
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Pin type legenda: I = Input O = Output I/O = Input/Output S = Supply nc = not connected
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3/28
TDA7400D
AUDIO PROCESSOR PART
±15 x 1dB steps
Input Multiplexer
Quasi-differential CD and cassette stereo input
AM mono input
Phone differential input
Multiplexer signal after In-Gain available at
separate pins
Treble Control
2nd order frequency response
Center frequency programmable in 4 steps
±15 x 1dB steps
Volume control
1dB attenuator
Max. gain 15dB
Max. attenuation 79dB
Speaker Control
4 independent speaker controls in 1dB steps
max gain 15dB
max. attenuation 79dB
Bass Control
2nd order frequency response
Center frequency programmable in 4(5) steps
DC gain programmable
Mute Functions
Direct mute
Digitally controlled softmute with 4 programmable
mute time
)
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ELECTRICAL CHARACTERISTICS (VS = 9V; Tamb = 25°C; RL = 10KΩ; all gains = 0dB; f = 1KHz;
unless otherwise specified).
Symbol
bs
Parameter
Test Condition
INPUT SELECTOR
Rin
VCL
SIN
Input Resistance
Clipping Level
Input Separation
GIN MIN
GIN MAX
Min. Input Gain
GSTEP
VDC
Step Resolution
)
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Max. Input Gain
-O
all inputs except Phone
Min.
Typ.
Max.
Unit
70
2.2
80
100
2.6
100
130
KΩ
VRMS
dB
-1
0
1
dB
13
15
17
dB
0.5
1
1.5
dB
Adjacent Gain Step
GMIN to GMAX
-5
-10
0.5
5
5
10
mV
mV
Input Resistance
Differential
70
100
130
KΩ
70
100
130
KΩ
Common Mode Rejection Ratio
Common Mode
VCM = 1VRMS @ 1KHz
45
45
70
60
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DC Steps
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DIFFERENTIAL CD STEREO INPUT
Rin
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CMRR
eN
VCM = 1VRMS @ 10KHz
Output Noise @ Speaker
Outputs
20Hz to 20KHz flat; all stages
0dB
6
dB
dB
15
µV
DIFFERENTIAL PHONE INPUT
Rin
CMRR
4/28
Input Resistance
Common Mode Rejection Ratio
Differential
VCM = 1VRMS @ 1KHz
VCM = 1VRMS @ 10KHz
40
40
40
56
70
60
KΩ
dB
dB
TDA7400D
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
17
dB
VOLUME CONTROL
GMAX
Max Gain
13
15
AMAX
Max Attenuation
70
79
ASTEP
EA
Step Resolution
Attenuation Set Error
G = -20 to 20dB
0.5
-1.25
1
0
1.5
1.25
dB
dB
G = -60 to 20dB
-4
0
3
dB
Adjacent Attenuation Steps
0.1
2
3
dB
mV
From 0dB to GMIN
0.5
5
mV
ET
VDC
Tracking Error
DC Steps
SOFT MUTE
AMUTE
TD
Mute Attenuation
T1
T2
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ol
T3
T4
Low Threshold for SM Pin1
High Threshold for SM Pin
Internal Pull-up Resistor
VTHlow
VTHhigh
RPD
bs
O
)
BASS CONTROL
CRANGE
Control Range
Step Resolution
Center Frequency
ASTEP
fC
ete
QBASS
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DCGAIN
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Quality Factor
Bass-Dc-Gain
s
(
t
c
fC1
fC2
fC3
fC4
Q1
Q2
Q3
Q4
DC = off
DC = on
)
s
(
ct
u
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80
Delay Time
dB
100
Pr
dB
0.48
1
ms
0.96
2
ms
20
200
40.4
324
60
600
1
2.5
70
100
130
ms
ms
V
V
KΩ
±13
±15
±17
dB
0.5
54
1
60
1.5
66
dB
Hz
63
72
70
80
77
88
Hz
Hz
90
100
(150)(2)
110
Hz
0.9
1.1
1.3
1.8
-1
3.5
1
1.1
1.25
1.5
2
0
4.4
1.4
1.7
2.2
1
5.5
dB
dB
±13
0.5
±15
1
±17
1.5
dB
dB
8
10
12
14
10
12.5
15
17.5
12
15
18
21
KHz
KHz
KHz
KHz
TREBLE CONTROL
CRANGE
ASTEP
fC
Control Range
Step Resolution
Center Frequency
fC1
fC2
fC3
fC4
1) The SM pin is active low (Mute = 0)
2) See note in Programming Part
5/28
TDA7400D
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
Max.
Unit
35
13
-70
0.5
80
50
15
-79
1
90
65
17
±2
5
KΩ
dB
dB
dB
dB
dB
mV
30
4.5
10
120
4.7
VRMS
KΩ
nF
Ω
V
3
15
µV
6.5
15
µV
SPEAKER ATTENUATORS
RIN
GMAX
AMAX
ASTEP
AMUTE
EE
VDC
Input Impedance
Max Gain
Max Attenuation
Step Resolution
Output Mute Attenuation
Attenuation Set Error
DC Steps
Adjacent Attenuation Steps
1.5
0.1
)
s
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ct
AUDIO OUTPUTS
VCLIP
RL
CL
ROUT
VDC
Clipping Level
Output Load Resistance
Output Load Capacitance
Output Impedance
DC Voltage Level
d = 0.3%
2.2
2
Output Noise
BW = 20 Hz to 20 KHz
output muted
BW = 20 Hz to 20 KHz
all gain = 0dB
all gain = 0dB flat; VO = 2VRMS
bass treble at 12dB;
a-weighted; VO = 2.6VRMS
VIN = 1VRMS; all stages 0dB
VIN = 1VRMS; Bass & Treble = 12dB
S/N
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Channel separation Left/Right
Total Tracking Error
BUS INPUTS
VIL
VIH
IIN
VO
ol
ete
s
b
O
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P
Input Low Voltage
Input High Voltage
Input Current
Output Voltage SDA
Acknowledge
O
)
s
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c
Distortion
SC
ET
6/28
bs
Signal to Noise Ratio
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4.3
GENERAL
eNO
2.6
AV = 0 to -20dB
AV = -20 to -60dB
102
96
110
100
80
-1
-2
0.002
0.05
100
0
0
d = 0.3%
VIN = 0.4V
IO = 1.6mA
dB
dB
0.1
0.1
1
2
0.8
2.5
-5
5
0.4
%
%
dB
dB
dB
V
V
µA
V
TDA7400D
Stereodecoder Part
ELECTRICAL CHARACTERISTICS (VS = 9V; deemphasis time constant = 50µs,
VMPX = 500mV(75KHz deviation), fm= 1KHz, Gv = 6dB, Tamb = 27°C; unless otherwise specified).
Symbol
Parameter
Vin
Rin
MPX Input Level
Input Resistance
GMIN
Min. Input Gain
Max. Input Gain
Step Resolution
GMAX
GSTEP
SVRR
Test Condition
Vripple = 100mV; f = 1KHz
Supply Voltage Ripple
Rejection
α
THD
Min.
Typ.
Max.
Unit
0.5
1.25
VRMS
70
100
130
KΩ
1.5
8.5
3.5
11
4.5
12.5
dB
dB
1.75
2.5
3.25
dB
35
60
30
50
Gv = 3.5dB
Max. channel Separation
S+N
N
Total Harmonic Distortion
A-weighted, S = 2Vrms
MONO/STEREO-SWITCH
80
VPTHST1
VPTHST0
Pilot Threshold Voltage
for Stereo, PTH = 1
VPTHMO1
Pilot Threshold Voltage
Pilot Threshold Voltage
for Stereo, PTH = 0
for Mono, PTH = 1
VPTHMO0
Pilot Threshold Voltage
for Mono, PTH = 1
o
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)
PLL
∆f/f
Capture Range
s
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DEEMPHASIS and HIGHCUT
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let
dB
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0.02
Signal plus Noise to Noise
Ratio
)
s
(
ct
dB
0.3
91
%
dB
10
15
25
mV
15
7
25
12
35
17
mV
mV
10
19
25
mV
0.5
%
τHC50
Deemphasis Time Constant
Bit 7, Subadr, 10 = 0,
VLEVEL >> VHCH
25
50
75
µs
τHC75
Deemphasis Time Constant
Bit 7, Subadr, 10 = 1,
VLEVEL >> VHCH
50
75
100
µs
τHC50
Highcut Time Constant
Bit 7, Subadr, 10 = 0,
VLEVEL >> VHCL
100
150
200
µs
Bit 7, Subadr, 10 = 1,
VLEVEL >> VHCL
150
225
300
µs
Internal Reference Voltage
Temperature Coefficient
4.7
5
3300
5.3
V
ppm
Min. LEVEL Gain
Max. LEVEL Gain
LEVEL Gain Step Resolution
-1
8
0.3
0
10
0.67
1
12
1
dB
dB
dB
VSBLmin
VSBLmax
VSBLstep
Min. Voltage for Mono
Min. Voltage for Mono
Step Resolution
25
54
2.2
29
58
4.2
33
62
6.2
%REF5V
%REF5V
%REF5V
VHCHmin
VHCHmax
VHCHstep
Min. Voltage for NO Highcut
Min. Voltage for NO Highcut
Step Resolution
38
62
5
42
66
8.4
46
70
12
%REF5V
%REF5V
%REF5V
VHCLmin
VHCLmax
VHCLstep
Min. Voltage for FULL Highcut
Max. Voltage for FULL Highcut
Step Resolution
12
28
2.2
17
33
4.2
22
38
6.2
%VHCH
%VHCH
%VHCH
u
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let
τHC75
o
s
b
Highcut Time Constant
STEREOBLEND-and HIGHCUT-CONTROL
O
REF5V
TCREF5V
LGmin
LGmax
LGstep
7/28
TDA7400D
ELECTRICAL CHARACTERISTICS (continued)
Symbol
Parameter
Test Condition
Min.
Typ.
40
50
Max.
Unit
75
62
90
dB
dB
dB
dB
65
75
dB
dB
70
dB
75
dB
95
84
dB
dB
Carrier and harmonic suppression at the output
α19
α38
α57
α76
Pilot Signal f = 19KHz
Subcarrier f = 38KHz
Subcarrier f = 57KHz
Subcarrier f = 76KHz
Intermodulation (Note 1)
α2
α3
fmod = 10KHz, fspur = 1KHz
fmod = 13KHz, fspur = 1KHz
)
s
(
ct
Traffic Ratio (Note 2)
α57
Signal f = 57KHz
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SCA - Subsidiary Communications Authoorization (Note 3)
α67
Signal f = 67KHz
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ACI - Adjacent Channel Interference (Note 4)
α114
α190
Signal f = 114KHz
Signal f = 190KHz
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Notes to the characteristics:
1. Intermodulation Suppression:
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α2 =
VO(signal)(at1KHz)
; fs = (2 x 10KHz) − 19KHz
VO(spurious)(at1KHz)
α3 =
VO(signal)(at1KHz)
; fs = (3 x 13KHz) − 38KHz
VO(spurious)(at1KHz)
)
(s
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measured with: 91% pilot signal; fm = 10kHz or 13kHz.
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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%)
P
e
α57 (V.W>F.) =
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VO(signal)(at1KHz)
VO(spurious)(at1KHz +⁄− 23KHz)
3. SCA ( Subsidiary Communications Authorization ) measured with: 81% mono signal; 9% pilot signal; fm = 1kHz; 10%SCA - subcarrier
( fs = 67kHz, unmodulated ).
s
b
O
4. ACI ( Adjacent Channel Interference ):
α67 =
VO(signal)(at1KHz)
; FS = (2 x 38KHz) −67KHz
VO(spurious)(at9KHz)
α114 =
VO(signal)(at1KHz)
; FS = 110KHz − (3 x 38KHz)
VO(spurious)(at4KHz)
α190 =
VO(signal)(at1KHz)
; FS = 186KHz − (5 x 38KHz)
VO(spurious)(at4KHz)
measured with: 90% mono signal; 9% pilot signal; fm =1kHz; 1% spurious signal ( fs = 110kHz or 186kHz, unmodulated).
8/28
TDA7400D
NOISE BLANKER PART
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 fieldstrength dependent trigger adjustment
very low offset current during hold time due to
opamps wMOS inputs
four selectable pulse suppression times
programmable noise rectifier charge/discharge
current
ELECTRICAL CHARACTERISTICS (continued)
Symbol
VTR
Parameter
Trigger Threshold 0) 1)
Test Condition
meas. with VPEAK = 0.9V
NBT = 111
NBT = 110
NBT = 101
NBT = 100
NBT = 011
NBT = 010
NBT = 001
NBT = 000
NCT = 00
NCT = 01
NCT = 10
NCT = 11
NRD 6) = 00
Min.
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
(c)
0.5
1.5
2.2
0.5
0.9
1.7
2.5
0.5
0.9
1.7
2.1
TBD
TBD
TBD
TBD
(c)
(c)
(c)
(c)
(c)
(c)
Typ.
30
35
40
45
50
55
60
65
260
220
180
140
0.9
1.7
2.5
0.9(off)
1.2
2.0
2.8
0.9(off)
1.4
1.9
2.4
38
32
25.5
22
0.3
0.8
1.3
2.0
10
20
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VTRNOISE
VRECT
VRECT DEV
VRECT FS
meas. with VPEAK = 1.5V
Rectifier Voltage
VMPX = 0mV
VMPX = 50mV; f = 150KHz
VMPX = 200mV; f = 150KHz
means. with
OVD = 11
VMPX = 800mV
OVD = 10
(75KHz dev.)
OVD = 01
OVD = 00
means. with
FSC = 11
VMPX = 0mV
FSC = 10
VLEVEL
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