BU7861KN_10 Datasheet, PDF (6/14 Pages) Rohm – Mixer & Selector IC with PCM CODEC and 16bit D/A Converter

BU7861KN
Technical Note
●Reference data
19
18
Vdd=3.4V
17
Vdd=3.0V
16
Vdd=2.6V
15
14
-50
0
50
100
Temperature[℃]
Fig.1 Operational Current
(All On)
-40
Lch
-50
-60
Rch
-70
-80
-90
-60
-40
-20
0
DAC Output Lev el [dBFS]
Fig.4 16bit D/A Converter
Distortion @ 1kHz
2.0
1.5
Vdd=3.4V
1.0
Vdd=3.0V
0.5
Vdd=2.6V
0.0
-50
0
50
100
Temperature [℃]
Fig.2 Static Consumed Current
0
-20
-40
-60
-80
-100
-120
-140
0
5000 10000 15000
Frequency [Hz]
20000
Fig.5 16bit D/A Converter
FFT @ 0dBFS, 1kHz
1.0
0.8
0.6
0.4
Lch
0.2
0.0
-0.2
Rch
-0.4
-0.6
-0.8
-1.0
0
5000 10000 15000
Frequency [Hz]
20000
Fig.3 16bit D/A Converter
Frequency characteristics@ 0dBFS
0
-20
-40
-60
-80
-100
-120
-140
0
5000 10000 15000
Frequency [Hz]
20000
Fig.6 16bit D/A Converter
FFT @ 0FS
2
0
2dB
-2
4dB
-4
-6
6dB
8dB
-8
-10
10dB
12dB
-12
-14
14dB
-16
10
100
1000 10000 100000
Frequency [Hz]
Fig.7 Bus Boost Frequency
Characteristics
2
0
4dB
-2
2dB
-4
-6
-8
6dB
8dB
10dB
12dB
14dB
-10
-12
-14
-16
10
100
1000
10000 100000
Frequency [Hz]
Fig.8 Bus Boost + High Pass Emphasis
Frequency Characteristics
10
0
-10
-20
-30
-40
-50
-60
0
1000
2000
3000
Frequency [Hz]
4000
Fig.9 Voice CODEC
TX Frequency Characteristics
2
0
-2
-4
-6
-8
-10
-12
0
1000
2000
3000
Frequency [Hz]
4000
Fig.10 Voice CODEC
RX Frequency Characteristics
0
-10
-20
-30
-40
-50
-60
-70
-80
0
10
20
30
40
50
Output Power [mW]
Fig.11 Headphone Amp
Output Characteristics @ vdd=3.0V, 1kHz
0
-10
-20
-30
-40
-50
-60
-70
-80
0
20
40
60
80 100
Output Power [mW]
Fig.12 Receiver Amp
Output Characteristics @ vdd=3.0V, 1kHz
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6/13
2010.09 - Rev.A