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MAS3549F 参数 Datasheet PDF下载

MAS3549F图片预览
型号: MAS3549F
PDF下载: 下载PDF文件 查看货源
内容描述: MAS 35x9F MPEG 2/3层, AAC音频解码器, G.729附录编解码器 [MAS 35x9F MPEG Layer 2/3, AAC Audio Decoder, G.729 Annex A Codec]
分类和应用: 解码器编解码器
文件页数/大小: 92 页 / 1187 K
品牌: MICRONAS [ MICRONAS ]
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MAS 35x9F  
DATA SHEET  
Limit Values  
Symbol  
Parameter  
Pin Name  
Unit  
Test Conditions  
Min.  
Typ.  
Max.  
XTALKAO  
Crosstalk attenuation left/right OUTLR  
channel (headphone)  
80  
dB  
f = 1 kHz, sine wave,  
OUTL/R: RL16 Ω  
(see Fig. 5–1 on page 89)  
analog gain = 0 dB  
input = 3 dBFS  
PSRRAO  
Power supply rejection ratio  
for analog audio outputs  
AVDD0/1  
OUTL/R  
70  
35  
dB  
dB  
1 kHz sine at 100 mVrms  
100 kHz sine at  
100 mVrms  
4.6.4. DC/DC Converter Characteristics  
at T = T , V = 1.2 V, V = 3.0 V, f = 18.432 MHz, f = 384 kHz, PWM mode, L = 22 µH, in P(L/M)QFP pack-  
A
in  
outn  
clk  
sw  
age (unless otherwise noted) Typ. values for T = 25 °C  
A
Limit Values  
Symbol  
Parameter  
Pin Name  
Unit  
Test Conditions  
Min.  
Typ.  
Max.  
VIN  
VIN  
Minimum start-up input  
voltage  
0.9  
V
ILOAD 1 mA,  
DCCF = 5050hex (reset)  
1)  
Minimum operating input  
voltage  
DC1  
DC2  
0.7  
0.8  
V
V
V
ILOAD = 50 mA,  
DCCF = 5050hex (reset)  
DC1  
DC2  
1.1  
1.2  
ILOAD = 200 mA,  
DCCF = 5050hex (reset)  
VOUT  
Programmable output voltage VSENSn  
range  
2.0  
3.5  
Voltage settings in DCCF  
register (I2C subaddress  
76hex  
)
VOTOL  
ILOAD1  
ILOAD2  
Output voltage tolerance  
VSENSn  
VSENSn  
−4  
4
%
ILOAD = 20 mA  
TA = 25 °C  
2)  
Output current  
1 battery cell  
200  
600  
mA  
mA  
%/V  
%
VIN = 0.9...1.5 V, 330 µF  
VIN = 1.8...3.0 V, 330 µF  
ILOAD = 20 mA  
Output current  
2 battery cells  
dVOUT  
/
Line regulation  
VSENSn  
VSENSn  
0.7  
dVIN/VOUT  
dVOUT  
/
Load regulation  
1.8  
ILOAD = 20...200 mA,  
VIN = 2.4 V, VOUT = 3.5 V  
VOUT  
hmax  
Maximum efficiency  
Switching frequency  
95  
%
fswitch  
DCSOn  
DCSOn  
297  
384  
250  
576  
kHz  
(see Section 2.6.2. on  
page 12), (see Table 3–3)  
fstartup  
Switching frequency during  
start-up  
kHz  
VSENSn < 1.9 V  
1) Since the regulators are bootstrapped, once started they will operate down to 0.7 V input voltage  
2) PFM mode regulates approx. 1% higher  
84  
June 30, 2004; 6251-505-1DS  
Micronas  
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