TDA7850 datasheet(9/18 Pages) STMICROELECTRONICS

部件名	TDA7850

功能描述	4 x 50 W MOSFET quad bridge power amplifier plus HSD

PDF	18 Pages

Scroll/Zoom	100%

制造商	STMICROELECTRONICS [STMicroelectronics]

网页	http://www.st.com

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9 / 18 page

TDA7850

Electrical specifications

9/18

VAM in

VS automute threshold

(Amp: Mute)

Att ≥ 80dB; POref = 4W

(Amp: Play)

Att < 0.1dB; PO = 0.5W

6.5

7.5

Ipin23

Muting pin current

VMUTE = 1.5V

(Sourced Current)

712

μA

VMUTE = 3.5V

-5

μA

HSD section

Vdropout Dropout voltage

IO = 0.35A; VS = 9 to 16V

0.25

0.6

Iprot

Current limits

400

800

Offset detector (Pin 25)

VM_ON

Mute voltage for DC offset

detection enabled

Vstby = 5V

VM_OFF

VOFF

Detected differential output offset Vstby = 5V; Vmute = 8V

±2

±3

±4

V25_T

Pin 25 voltage for detection =

TRUE

Vstby = 5V; Vmute = 8V

VOFF > ±4V

01.5

V25_F

Pin 25 Voltage for detection =

FALSE

Vstby = 5V; Vmute = 8V

VOFF > ±2V

Saturated square wave output.

Table 4.

Electrical characteristics (continued)

(Refer to the test and application diagram, VS = 14.4V; RL = 4Ω; Rg = 600Ω; f = 1KHz;

Tamb = 25°C; unless otherwise specified).

Symbol

Parameter

Test Condition

Min.

Typ.

Max.

Unit

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