E-TDA7342NTR Datasheet E-TDA7342N, E-TDA7342NTR | P7-P9

TDA7342 Electrical specifications

7/20

2.4 Electrical characteristics

Table 4. Electrical characteristics

(V

S

= 9V; R

L

= 10K; R

g

= 50; T

amb

= 25°C; all gains = 0dB; f = 1KHz. Refer to the test

circuit, unless otherwise specified.)

Symbol Parameter Test condition Min. Typ. Max. Unit

Input selector

R

I

Input resistance 70 100 130 K

V

CL

Clipping level d 0.3% 2.1 2.6 V

RMS

S

I

Input separation 80 100 dB

R

L

Output load resistance 2 K

G

I MIN

Minimum input gain -0.75 0 0.75 dB

G

I MAX

Maximum input gain 10.25 11.25 12.25 dB

G

step

Step resolution 2.75 3.75 4.75 dB

e

N

Input noise 20Hz to 20 KHz unweighted 2.3 V

V

DC

DC steps

Adiacent Gain Steps 1.5 10 mV

G

IIN

to G

IMAX

3 mV

Differential input ( IN 3)

R

I

Input resistance

Input selector BIT D6 = 0 (0dB) 10 15 20 K

Input selector BIT D6 = 1(-6dB) 14 20 30 K

CMRR Common mode rejection ratio

V

CM

= 1V

RMS

; f =1KHz 48 75 dB

f = 10KHz 45 70 dB

d Distortion V

I

= 1V

RMS

0.01 0.08 %

e

IN

Input noise 20Hz to 20KHz; Flat; D6 = 0 5 V

G

DIFF

Differential gain

D6 = 0 -1 0 1 dB

D6 = 1 -7 -6 -5 dB

Volume control

R

I

Input resistance 35 50 K

G

MAX

Maximum gain 18.75 20 21.25 dB

A

MAX

Maximum attenuation 57.7 59.7 62.7 dB

A

STEPC

Step resolution coarse atten. 0.5 1.25 2.0 dB

A

STEPF

Step resolution fine attenuation 0.11 0.31 0.51 dB

E

A

Attenuation set error

G = 20 to -20dB -1.25 0 1.25 dB

G = -20 to -58dB -3 2 dB

E

t

Tracking error 2 dB

V

DC

DC steps

Adiacent Attenuation Steps -3 0 3 mV

From 0dB to A

MAX

0.5 5 mV

Electrical specifications TDA7342

8/20

Loudness control

R

I

Internal resistor Loud = On 35 50 65 K

A

MAX

Maximum attenuation 17.5 18.75 20.0 dB

A

step

Step resolution 0.5 1.25 2.0 dB

Zero crossing mute

V

TH

Zero crossing threshold

(1)

WIN = 11 20 mV

WIN = 10 40 mV

WIN = 01 80 mV

WIN = 00 160 mV

A

MUTE

Mute attenuation 80 100 dB

V

DC

DC step 0dB to Mute 0 3 mV

Soft mute

A

MUTE

Mute attenuation 45 60 dB

T

DON

On delay time

C

CSM

= 22nF; 0 to -20dB; I = I

MAX

0.7 1 1.7 ms

C

CSM

= 22nF; 0 to -20dB; I = I

MIN

20 35 55 ms

I

DOFF

Off current

V

CSM

= 0V; I = I

MAX

25 50 75 A

V

CSM

= 0V; I = I

MIN

1 A

V

THSM

Soft mute threshold (pin 14) 1.5 2.5 3.5 V

R

INT

Pull-up resistor (pin 21)

(2)

35 50 65 k

V

SMH

(pin 21) level high 3.5 V

V

SML

(pin 21) level low Soft mute active 1 V

Bass control

B

BOOST

Max bass boost 15 18 20 dB

B

CUT

Max bass cut -8.5 -10 -11.5 dB

A

step

Step resolution 1 2 3 dB

R

g

Internal feedback resistance 45 65 85 K

Treble control

C

RANGE

Control range 13 14 15 dB

A

step

Step resolution 1 2 3 dB

Speaker attenuators

C

RANGE

Control range 35 37.5 40 dB

A

step

Step resolution 0.5 1.25 2.00 dB

Table 4. Electrical characteristics (continued)

(V

S

= 9V; R

L

= 10K; R

g

= 50; T

amb

= 25°C; all gains = 0dB; f = 1KHz. Refer to the test

circuit, unless otherwise specified.)

Symbol Parameter Test condition Min. Typ. Max. Unit

TDA7342 Electrical specifications

9/20

A

MUTE

Output mute attenuation Data word = XXX11111 80 100 dB

E

A

Attenuation set error 1.25 dB

V

DC

DC steps Adjacent attenuation steps 0 3 mV

Audio output

V

clip

Clipping level d = 0.3% 2.1 2.6 Vrms

R

L

Output load resistance 2 K

R

O

Output impedance 30 100 

V

DC

DC voltage Level 3.5 3.8 4.1 V

General

V

CC

Supply voltage 6 9 10.2 V

I

CC

Supply current 5 10 15 mA

PSRR Power supply rejection ratio

f = 1KHz 60 80 dB

B = 20 to 20kHz "A" weighted 65 dB

e

NO

Output noise

Output Muted (B = 20 to 20kHz

flat)

2.5 V

All Gains 0dB (B = 20 to 20kHz

flat)

5 15 V

E

t

Total tracking error

A

V

= 0 to -20dB 0 1 dB

A

V

= -20 to -60dB 0 2 dB

S/N Signal to noise ratio All Gains = 0dB; V

O

= 1Vrms 106 dB

S

C

Channel separation 80 100 dB

d Distortion V

IN

=1V 0.01 0.08 %

Bus inputs

V

IL

Input low voltage 1 V

V

lN

Input high voltage 3 V

I

lN

Input current V

IN

= 0.4V -5 5 A

V

O

Output voltage SDA

acknowledge

I

O

= 1.6mA 0.4 0.8 V

1. WIN represents the MUTE programming bit pair D6, D5 for the zero crossing window threshold.

2. Internal pull-up resistor to Vs/2; LOW = softmute active.

Table 4. Electrical characteristics (continued)

(V

S

= 9V; R

L

= 10K; R

g

= 50; T

amb

= 25°C; all gains = 0dB; f = 1KHz. Refer to the test

circuit, unless otherwise specified.)

Symbol Parameter Test condition Min. Typ. Max. Unit

E-TDA7342NTR

E-TDA7342NTR

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