TDA7705 datasheet(20/42 Pages) STMICROELECTRONICS

20 / 42 page

Electrical specifications

TDA7705

20/42

Doc ID 15938 Rev 9

3.4.7

Audio DAC

3.4.8

IO interface pins

Table 13.

Audio DAC

Symbol

Parameter

Test condition

Min

Typ

Max

Units

Vout

Max. output voltage

Full scale

Vrms

Bandwidth

1dB attenuation

KHz

Rout

Output resistance

600

750

900



VN, out

Output noise

µVrms

THD

Distortion

-6 dBFS

0.03

0.04

Table 14.

IO interface pins

Symbol

Parameter

Test condition

Min

Typ

Max

Units

High level output voltage (all

IOs except GPO pin 2)

Iout = 500 µA

2.9

3.2

GPIOs source current (all IOs

in source mode except pin 2)

Total sourced current by all

GPIOs

1.25

Low level output voltage (all

IOs except GPO pin 2)

Iout = -1 mA

0.1

0.3

Input voltage range

3.5

High level input voltage

2.0

Low level input voltage

0.8

Treset

Reset time

Minimum time during which

pin RSTN must be low so as

to reset the device

µs

Tlatch

Boot mode configuration latch

time

Minimum time during which

the voltage applied at pins 25

and 39 must be kept in order

to latch the correct boot mode

(serial bus configuration)

µs

GPO PLLTEST (pin 2) max

source current

GPO PLLTEST (pin 2) max

sink current

--1

GPO PLLTEST (pin 2)

minimum high level output

voltage

Iout = 1 mA

2.8

3.1

GPO PLLTEST (pin 2)

maximum high level output

voltage

Iout = 1 mA

0.1

0.3

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