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PDF FT690 Data sheet ( Hoja de datos )
| Número de pieza | FT690 | |
| Descripción | 1.25W Mono Audio Power Amplifier | |
| Fabricantes | fangtek | |
| Logotipo |  |
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ft690
1.25W Mono Audio Power Amplifier
GENERAL DESCRIPTION
The ft690 is a mono Class-AB audio p ower amplifier
designed fo r demandin g applic ations in mobile
phones and other portable media devices. It is
capable of delivering 1. 25W of con tinuous outp ut
power to an 8Ω BTL load with less than 1% distortion
(THD+N) from a 5VDC power supply.
The ft690 is specifically designed t o pro vide hi gh
quality o utput powe r w ith a minimal numbe r of
external components. The ft690 do es not require
output coupling capacitors or bootstr ap capacitors,
and is therefore ideal for use in mobile phon es and
other low vol tage applications where minimal power
consumption is a primary requirement.
The ft690 features a low -power shutdown mo de. In
the shutdown mode where a logic low is applied onto
the SD pin, the amplifier is completely turned off and
no supply current will flow through the device.
The ft690 also feature s advanced pop & click
circuitry which eliminat es noise which woul d
otherwise occur durin g turn-o n and turn -off
transitions.
The ft690 is unity-gain stable and can be configured
by external gain-setting resistors.
APPLICATION CIRCUIT
FEATURES
Ultra low current in shutdown mode
Low quiescent current
Improved pop & click circuitry eliminates noise
during turn-on and turn-off transitions
Supports both single-end and differential inputs
Wide operating voltage range: 2.5 ~ 5.5V
No output coupling capacitors, snubber networks
or bootstrap capacitors required
Available in space-saving package
COL1.5X1.5-9L
MSOP-8L
KEY SPECIFICATIONS
Improved PSRR at 217Hz : 66dB
Power Output at 5V, 1% THD+N, 8Ω: 1.25W
Power Output at 3V, 1% THD+N, 8Ω: 425mW
Quiescent Current 1.6mA (VDD=3V)
APPLICATIONS
Mobile phone
PDA
Portable electronic devices
August 2010
Figure 1: Typical Audio Amplifier Application Circuit
www.fangtek.com.cn
1
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| Páginas | Total 2 Páginas | |
| PDF Descargar | [ Datasheet FT690.PDF ] | |
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