LA74310LP_08 SANYO [Sanyo Semicon Device], LA74310LP_08 Datasheet

LA74310LP_08

Manufacturer Part Number

LA74310LP_08

Description

Audio Interface for DSC + Video Driver

Manufacturer

SANYO [Sanyo Semicon Device]

Datasheet

1.LA74310LP_08.pdf (22 pages)

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Ordering number : ENA0904

LA74310LP

Overview

Features

The LA74310LP is an AV interface IC for digital still cameras (DSCs). It incorporates all the functions necessary for

analog audio signal processing for microphone and loudspeaker amplifiers. It also incorporates video output drivers that

require no output coupling capacity. The IC is ideal for reducing the number of components and further miniaturization of

digital still cameras.

• Three-wire type SERIAL communication • MIC AMP,

• ALC

• PB input method: Analog or digital for inputting (ΔΣ) signal

• 3rd order LPF (for REC/PB switching control, option of fc=4kHz or 11kHz)

• SPEAKER AMP (The BEEP signal can be mixed.),

• LINE output (with SERIAL MUTE)

• STANDBY control (current drain < 10μA)

• Not requires output coupling capacity

• Low voltage drive (V CC =2.7V to 3.6V)

• V sag does not occur

• 6th order LPF (fc=9MHz) is built-in.

• 0μA current dissipation on standby mode.

• 3 ways amplifier gains (6, 12, 16dB) can be selected. (Pin control (GND/Open/V CC ))

• The video output has the capacity where one load of 75Ω impedance can be driven.

AUDIO INTERFACE block

VIDEO DRIVER block

MIC power supply incorporated (with built-in pull-up resistor)

with electronic VOLUME (controlled by Serial communication)

"standard application", intended for the use as general electronics equipment (home appliances, AV equipment,

Any and all SANYO Semiconductor Co.,Ltd. products described or contained herein are, with regard to

communication device, office equipment, industrial equipment etc.). The products mentioned herein shall not be

intended for use for any "special application" (medical equipment whose purpose is to sustain life, aerospace

instrument, nuclear control device, burning appliances, transportation machine, traffic signal system, safety

equipment etc.) that shall require extremely high level of reliability and can directly threaten human lives in case

of failure or malfunction of the product or may cause harm to human bodies, nor shall they grant any guarantee

thereof. If you should intend to use our products for applications outside the standard applications of our

customer who is considering such use and/or outside the scope of our intended standard applications, please

consult with us prior to the intended use. If there is no consultation or inquiry before the intended use, our

customer shall be solely responsible for the use.

Specifications of any and all SANYO Semiconductor Co.,Ltd. products described or contained herein stipulate

the performance, characteristics, and functions of the described products in the independent state, and are not

guarantees of the performance, characteristics, and functions of the described products as mounted in the

customer

device, the customer should always evaluate and test devices mounted in the customer

equipment.

s products or equipment. To verify symptoms and states that cannot be evaluated in an independent

Monolithic Linear IC

Audio Interface for DSC

+ Video Driver

91207 TI IM B8-9167 No.A0904-1/22

s products or

Related parts for LA74310LP_08

LA74310LP_08 Summary of contents

Page 1

Ordering number : ENA0904 LA74310LP Overview The LA74310LP interface IC for digital still cameras (DSCs). It incorporates all the functions necessary for analog audio signal processing for microphone and loudspeaker amplifiers. It also incorporates video output drivers ...

Page 2

Specifications Maximum Ratings at Ta=25°C Parameter Maximum supply voltage Allowable power dissipation Operating temperature Storage temperature * Substrate mounting condition (40mm × 50mm × 0.8mm: glass epoxy) 2S2P (Four layers substrate) Operating Conditions 25°C Parameter Recommended supply ...

Page 3

Continued from preceding page. Parameter LINE output system LINE reference output LEVEL VOL LINE reference output distortion rate HDL LINE reference output noise voltage VNOL PB IN max input LEVEL VINPMX LINE output frequency characteristics 1 FEQP1 LINE output frequency ...

Page 4

Electrical Characteristics of VIDEO Block at Ta=25° =3.1V Parameter Circuit current V CC current dissipation =White50 current dissipation 2 (Non-signal mode current dissipation 3 (Standby mode) ...

Page 5

Description of the Content of Serial Communication DATA No. 0 DUMMY 1 LPF Cut-off frequency SW 2 VREF capacitor charging circuit control SW 3 MIC AMP POWER SW 4 ALC AMP POWER SW 5 LPF1 MODE SW 6 LPF1/LPF2 selection ...

Page 6

POWER ON Condition (SERIAL communication) H Power Supply L H STANDBY control (Pin No 23 POWER ON PULSE (IC inside C.S. L Dummy communication H POWER ON RESET (IC inside) L POWER ON RESET state The ...

Page 7

Method of Measuring Electric Characteristics of AUDIO Block at Ta=25° L=3.0V SP=3.3V, f=1kHz VREF capacitor charging circuit OFF MODE LA74310LP No.A0904-7/22 ...

Page 8

LA74310LP No.A0904-8/22 ...

Page 9

Voltage [ 0.E+00 2.E-04 4.E-04 Figure 26. PWM waveform input into the pin 2 when measuring VIDVOL LA74310LP 1kHz sine wave PWM waveform input into the pin 2 6.E-04 8.E-04 1.E-03 1.E-03 ...

Page 10

Description of Pin Functions Pin No (Power source for VIDEO input 3 A GND REC output 6 ALC detection 7 ALC input 8 MIC output 9 MIC GND 10 MIC input 11 ...

Page 11

LA74310LP Internal Equivalent Diagram and Recommended Circuit Diagram 1μ GAIN CTL 1μF From 33 LPF DAC STANDBY HIGH 34 +16dB CLOCKOUT 37 Minus Voltage 2.2μF Generator ...

Page 12

Table of Input/Output Forms of LA74310LP (Audio Block) Pin No. Pin Name DC voltage 1.64V Reference input level =-15dBV Maximum input level = -5dBV ...

Page 13

Continued from preceding page. Pin No. Pin Name DC voltage 6 ALC DET 7 ALC IN 1.64V At MIC reference input Output level = -49dBV Max input level =-10dBV 8 MIC OUT 1.6V At MIC reference input Output level = ...

Page 14

Continued from preceding page. Pin No. Pin Name DC voltage 12 VREFL 2.30V GND 0V 15 SPK OUT+ 1.27V At PB reference input Output level = -8dBV (EVR MAX 3. ...

Page 15

Continued from preceding page. Pin No. Pin Name DC voltage 23 STANDBY L 24 LINE OUT 1.52V At PB reference input Output level = -11dBV CLOCK 27 DATA 3.0V Table of ...

Page 16

Continued from preceding page. Pin No. Pin Name DC voltage 1.1V Video input terminal (Sync-tip clamp (input High-impedance SAV CTL V CC Power save mode select pin (GND) ...

Page 17

POP Sound Avoiding Sequence 1Upon STANDBY cancellation & control (PBMODE) Power Supply ( & SP) STANDBY pin (23PIN) CS CLOCK =Don’t care Optional =CLOCK DATA sending timing DMY Timing Communication content * 0:11kHz ...

Page 18

STANDBY cancellation & control (RECMODE) Power Supply ( & SP) STANDBY pin (23PIN) CS CLOCK =Don’t care Optional =CLOCK DATA sending timing DMY C SW Timing Communication content * 0:11kHz 0:ON ...

Page 19

PB (SPK) Switching CS CLOCK =Don’t care =CLOCK Optional DATA sending timing DMY C SW Timing Communication content * 0:11kHz 0:ON 0:ON 0:ON * 1:4kHz 1:OFF 1:OFF 1:OFF T0 Speaker AMP PBMODE: ...

Page 20

Switching (min → max) 0.25ms/CS CS DATA sending timing DMY Timing Communication content * 0:11kHz 0:ON 0:ON 0: EVRDATA EVRDATA EVRDATA EVRDATA EVRDATA= ...

Page 21

Switching (max → min) 0.25ms/CS CS DATA sending timing DMY Timing Communication content * 0:11kHz 0:ON 0:ON 0: EVRDATA= EVRDATA= EVRDATA= EVRDATA= EVRDATA= ...

Page 22

SANYO Semiconductor Co.,Ltd. assumes no responsibility for equipment failures that result from using products at values that exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other parameters) listed in products specifications of any and all ...

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