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參數(shù)資料
| 型號： | SM6800AB |
| 廠商： | Seiko NPC Corporation |
| 英文描述： | Class-D Mono Amplifier for Mobile Telephones |
| 中文描述： | D類單聲道放大器，移動電話 |
| 文件頁數(shù)： | 1/12頁 |
| 文件大?。?/td> | 169K |
| 代理商： | SM6800AB |
SM6800A
NIPPON PRECISION CIRCUITS INC.—1
Class-D Mono Amplifier for Mobile Telephones
OVERVIEW
The SM6800A is an analog-input, class-D mono amplifier. Class-D operation provides high efficiency and low
power consumption. The device also incorporates a selectable real-time operation dynamic range compression
function that effectively suppresses the distortion in the saturation level region output by soft-clipping, boost-
ing the average sound pressure from the speaker during playback. It also incorporates an input equalizer pin for
output speaker frequency characteristics adjustment. These features make the device ideal for use in mobile
telephones and speaker applications requiring miniaturization and high-efficiency. The output stage has a BTL
output configuration where the output waveform inverts only the modulation components, enabling direct drive
connection, without using an LC filter, to a dynamic speaker. The device is available in miniature 20-pin QFN
packages, and requires only a peripheral chip capacitor to form a miniature amplifier circuit.
FEATURES
I
Operating supply voltage: 2.7 to 4.3V
Low current consumption: 4.8mA (V
Output power: 0.7W (V
Output fundamental frequency: 125kHz
Gain
4.5dB (Normal)
12dB to 4.5dB automatic adjustment in
response to the input level
(Dynamic range compression mode)
Silicon-gate CMOS process
Package: 20-pin QFN
I
DD
= 3.6V)
load)
I
DD
=
3.6V, 8
I
I
I
I
APPLICATIONS
I
Cellular phone
PDA
Digital still camera
I
I
ORDERING INFORMATION
PINOUT
(Top view)
PACKAGE DIMENSIONS
(Unit: mm)
Device
Package
SM6800AB
20-pin QFN
6
7 8
9 10
20 19 18 17 16
15
14
13
12
11
1
2
3
4
5
VDD3
OUTP
VSS2
OUTN
VDD2
VDD1
IN
EQP
EQN
VSS1
V
V
V
P
M
P
T
T
T
V
4.20 ± 0.20
4.00 ± 0.10
4
4
1
0.50
0.60 ± 0.10
0
1
0
+
0.22 ± 0.05
0.05
0.05 M
2
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