AD22650中文资料

ESMT/EMP

Preliminary AD22650

Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc. Publication Date: Dec. 2011

Revision: 0.2 1/19

3-Vrms Cap-Less Line Driver with Adjustable Gain

Features

z Operation Voltage: 3V to 5.5V z Cap-less Output

- Eliminates Output Capacitors

- Improves Low Frequency Response - Reduces POP/Clicks z Low Noise and THD - SNR > 102dB

- Typical Vn < 12uVrms - THD+N < 0.02%

z Maximum Output Voltage Swing into 2.5k Load - 2Vrms at 3.3V Supply Voltage - 3Vrms at 5V Supply Voltage z Differential Input

z External Gain Setting from 1V/V to 10V/V z Fast Start-up Time : 0.5ms z Integrated De-Pop Control

z External Under Voltage Protection z Thermal Protection

z Less External Components Required

z +/-8kV IEC ESD Protection at line outputs

Ordering Information

Applications

z LCD / PDP TVs z CD / DVD players z Set-Top Boxes

z Home Theater in Box

Description

The AD22650 is a 3-Vrms cap-less stereo line driver. The device is ideal for single supply electronics. Cap-less design can eliminate output dc-blocking capacitors for better low frequency response and save cost.

The AD22650 is capable of delivering 3-Vrms output into a 2.5k ?　load with 5V supply. The gain settings can be set by users from 1V/V to 10V/V externally. The AD22650 has internal and external under voltage protection to prevent POP noise. Build-in shutdown control and de-pop control sequence also help AD22650 to be a pop-less device.

The AD22650 is available in a 14-pin TSSOP package.

Product ID Package Packing Comments AD22650-QH14NAT 96 Units / Tube 100 Tubes / Small Box AD22650-QH14NAR

TSSOP-14

2.5k Units Tape & Reel

Green

Simplified Application Circuit

ESMT/EMP

Preliminary AD22650

Elite Semiconductor Memory Technology Inc./Elite MicroPower Inc.

Publication Date: Dec. 2011 Revision: 0.2 2/19

Pin Assignments

LINP LINN EN SGND CN

PVSS OUTL RINP RINN

PGND UVP CP

PVDD OUTR TSSOP-14(Top View)

Pin Description

No. Name Type (1)

Pin Description

1 LINP I Left channel OP positive input

2 LINN I Left channel OP negative input

3 OUTL O Left channel OP output

4 SGND P Signal ground

5 EN I Enable input, active high

6 PVSS

O Supply voltage

7 CN I/O Charge-pump flying capacitor negative terminal 8

CP

I/O

Charge-pump flying capacitor positive terminal

9 PVDD P Positive supply 10 PGND P Power ground 11 UVP I Under-voltage protection input 12 OUTR O Right channel OP output 13 RINN I Right channel OP negative input 14

RINP

I

Right channel OP positive input

(1) I=input, O=output, P=power