TDA7400DTR Datasheet TDA7400DTR, E-TDA7400DTR | P7-P9

ELECTRICAL CHARACTERISTICS (V

S

= 9V; deemphasis time constant = 50µs,

V

MPX

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

amb

= 27°C; unless otherwise specified).

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

in

MPX Input Level Gv = 3.5dB 0.5 1.25 V

RMS

R

in

Input Resistance 70 100 130 K

Ω

G

MIN

Min. Input Gain 1.5 3.5 4.5 dB

G

MAX

Max. Input Gain 8.5 11 12.5 dB

G

STEP

Step Resolution 1.75 2.5 3.25 dB

SVRR Supply Voltage Ripple

Rejection

V

ripple

= 100mV; f = 1KHz 35 60 dB

α

Max. channel Separation 30 50 dB

THD Total Harmonic Distortion 0.02 0.3 %

S

+

N

Signal plus Noise to Noise

Ratio

A-weighted, S = 2V

rms

80 91 dB

MONO/STEREO-SWITCH

V

PTHST1

Pilot Threshold Voltage for Stereo, PTH = 1 10 15 25 mV

V

PTHST0

Pilot Threshold Voltage for Stereo, PTH = 0 15 25 35 mV

V

PTHMO1

Pilot Threshold Voltage for Mono, PTH = 1 7 12 17 mV

V

PTHMO0

Pilot Threshold Voltage for Mono, PTH = 1 10 19 25 mV

PLL

∆

f/f Capture Range 0.5 %

DEEMPHASIS and HIGHCUT

τ

HC50

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

V

LEVEL

>> V

HCH

25 50 75

µ

s

τ

HC75

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

V

LEVEL

>> V

HCH

50 75 100

µ

s

τ

HC50

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

V

LEVEL

>> V

HCL

100 150 200

µ

s

τ

HC75

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

V

LEVEL

>> V

HCL

150 225 300

µ

s

STEREOBLEND-and HIGHCUT-CONTROL

REF5V Internal Reference Voltage 4.7 5 5.3 V

TC

REF5V

Temperature Coefficient 3300 ppm

L

Gmin

Min. LEVEL Gain -1 0 1 dB

L

Gmax

Max. LEVEL Gain 8 10 12 dB

L

Gstep

LEVEL Gain Step Resolution 0.3 0.67 1 dB

VSBL

min

Min. Voltage for Mono 25 29 33 %REF5V

VSBL

max

Min. Voltage for Mono 54 58 62 %REF5V

VSBL

step

Step Resolution 2.2 4.2 6.2 %REF5V

VHCH

min

Min. Voltage for NO Highcut 38 42 46 %REF5V

VHCH

max

Min. Voltage for NO Highcut 62 66 70 %REF5V

VHCH

step

Step Resolution 5 8.4 12 %REF5V

VHCL

min

Min. Voltage for FULL Highcut 12 17 22 %VHCH

VHCL

max

Max. Voltage for FULL Highcut 28 33 38 %VHCH

VHCL

step

Step Resolution 2.2 4.2 6.2 %VHCH

Stereodecoder Part

TDA7400D

7/28

Obsolete Product(s) - Obsolete Product(s)

ELECTRICAL CHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

Carrier and harmonic suppression at the output

α

19 Pilot Signal f = 19KHz 40 50 dB

α

38 Subcarrier f = 38KHz 75 dB

α

57 Subcarrier f = 57KHz 62 dB

α76

Subcarrier f = 76KHz 90 dB

Intermodulation (Note 1)

α

2f

mod

= 10KHz, f

spur

= 1KHz 65 dB

α

3f

mod

= 13KHz, f

spur

= 1KHz 75 dB

Traffic Ratio (Note 2)

α

57 Signal f = 57KHz 70 dB

SCA - Subsidiary Communications Authoorization (Note 3)

α

67 Signal f = 67KHz 75 dB

ACI - Adjacent Channel Interference (Note 4)

α

114 Signal f = 114KHz 95 dB

α

190 Signal f = 190KHz 84 dB

Notes to the characteristics:

1. Intermodulation Suppression:

α

2

=

V

O

(

signal

)(

at1KHz

)

V

O

(

spurious

)(

at

1KHz

)

; f

s

=

(

2 x 10KHz

)

−

19KHz

α

3

=

V

O

(

signal

)(

at1KHz

)

V

O

(

spurious

)(

at

1KHz

)

; f

s

=

(

3 x 13KHz

)

−

38KHz

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

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%)

α

57

(

V.W

>

F.

)

=

V

O

(

signal

)(

at1KHz

)

V

O

(

spurious

)(

at

1KHz

+

⁄

−

23KHz

)

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

( fs = 67kHz, unmodulated ).

α

67

=

V

O

(

signal

)(

at1KHz

)

V

O

(

spurious

)(

at

9KHz

)

;

F

S

=

(

2 x

38KHz

)

−

67KHz

4. ACI ( Adjacent Channel Interference ):

α

114

=

V

O

(

signal

)(

at1KHz

)

V

O

(

spurious

)(

at

4KHz

)

; F

S

=

110KHz

−

(

3

x

38KHz

)

α

190

=

V

O

(

signal

)(

at1KHz

)

V

O

(

spurious

)(

at

4KHz

)

; F

S

=

186KHz

−

(

5

x

38KHz

)

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

TDA7400D

8/28

Obsolete Product(s) - Obsolete Product(s)

ELECTRICAL CHARACTERISTICS (continued)

Symbol Parameter Test Condition Min. Typ. Max. Unit

V

TR

Trigger Threshold

0) 1)

meas. with V

PEAK

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

OP

NBT = 110 (c) 35 (c) mV

OP

NBT = 101 (c) 40 (c) mV

OP

NBT = 100 (c) 45 (c) mV

OP

NBT = 011 (c) 50 (c) mV

OP

NBT = 010 (c) 55 (c) mV

OP

NBT = 001 (c) 60 (c) mV

OP

NBT = 000 (c) 65 (c) mV

OP

V

TRNOISE

Noise Controlled Trigger

Threshold

2)

meas. with V

PEAK

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

OP

NCT = 01 (c) 220 (c) mV

OP

NCT = 10 (c) 180 (c) mV

OP

NCT = 11 (c) 140 (c) mV

OP

V

RECT

Rectifier Voltage V

MPX

= 0mV NRD

6)

= 00 0.5 0.9 1.3 V

V

MPX

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

V

MPX

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

V

RECT DEV

deviation dependent

rectifier Voltage

3)

means. with

V

MPX

= 800mV

(75KHz dev.)

OVD = 11 0.5 0.9(off) 1.3 V

OP

OVD = 10 0.9 1.2 1.5 V

OP

OVD = 01 1.7 2.0 2.3 V

OP

OVD = 00 2.5 2.8 3.1 V

OP

V

RECT FS

Fieldstrength Controlled

Rectifier Voltage

4)

means. with

V

MPX

= 0mV

V

LEVEL

<< V

SBL

(fully mono)

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

T

S

Suppression Pulse

Duration

5)

Signal HOLDN

in Testmode

BLT = 00 TBD 38 TBD

µ

s

BLT = 10 TBD 32 TBD

µ

s

BLT = 01 TBD 25.5 TBD

µ

s

BLT = 00 TBD 22 TBD

µ

s

V

RECTADJ

Noise Rectifier

discharge adjustment

6)

Signal PEAK in

Testmode

NRD = 00

6)

(c) 0.3 (c) V/ms

NRD = 01

6)

(c) 0.8 (c) V/ms

NRD = 10

6)

(c) 1.3 (c) V/ms

NRD = 11

6)

(c) 2.0 (c) V/ms

SR

PEAK

Noise Rectifier Charge Signal PEAK in

Testmode

PCH = 0

7)

(c) 10 (c) mV/

µ

s

PCH = 1

7)

(c) 20 (c) mV/

µ

s

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

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 field-

strength 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

TDA7400D

9/28

Obsolete Product(s) - Obsolete Product(s)

TDA7400DTR

TDA7400DTR

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