BU7861KN_10 Datasheet, PDF (3/14 Pages) Rohm – Mixer & Selector IC with PCM CODEC and 16bit D/A Converter

BU7861KN
Technical Note
・Sound Block
Parameter
Frequency Characteristics
DAC Full Scale
Gain Error between Channels
Distortion (No Bass Boost)
Distortion (With Bass Boost)
S/N
Crosstalk
Output Level during Mute
Limits
Unit
Min. Typ. Max.
Conditions
-3
－
+3
dB
Reference level (-20dB due to full scale)
f=20Hz～20kHz -3dB band width
1.4
1.8
2.2 V_P-P 0.6×VDD
-
-
±1.5
dB
Difference between Lch and Rch levels during
DAC full scale
－
－
1
%
DAC input=-0.5dBFS, HP_VOL=-2dB,
HP2_VOL=0dB
－
－
10
%
DAC input=-0.5dBFS, HP_VOL=-2dB,
HP2_VOL=0dB
During full scale
75
83
－ dB HP_VOL, HP2_VOL=0dB, f=1kHz, A-weighted
Stereo headphone amp included
70
80
－
dB
Measures the leak from Lch to Rch during
full-scale output. 1kHz BPF
70
80
－ dB 1kHz BPF
・Driver Amp Block
Parameter
Microphone Amp
Receiver Amp
Gain Configurable Range
(THD≦1%)
Maximum Output Voltage
(THD≦1%)
S/N
PSRR
100Hz
1kHz
Load
Maximum Output Power
(THD≦1%）
S/N
Stereo
Headphone Amp
SPOUT Terminal
EXTOUT
Terminal
Offset Voltage
PSRR
100Hz
1kHz
Load
Maximum Output Power
(THD≦1%）
PSRR
100Hz
1kHz
Maximum Output Voltage
(THD≦1%)
Maximum Output Voltage
(THD≦1%)
Limits
Unit
Min. Typ. Max.
Conditions
40
－
－ dB f=100Hz～3.4kHz
－ 1.0 － Vrms MICO terminal, f=1kHz
60
66
－ dB C-Message
12
25
20
35
－
－
dB
0.2V_P-P superimposed to supply
COMIN 1.0µF, MICIN no input
26
32
－Ω
31.25 45
－ mW RL=32Ω, f=1kHz
80
90
－ dB RL=32Ω, C-Message
－
5
100 mV
65
60
77
70
－
－
dB
0.2V_P-P superimposed to supply
COMIN 1.0µF
12
16
－Ω
15
25
15
26
40
48
0.707 －
－ mW R_L=16Ω, f=1kHz
－
－
dB
0.2V_P-P superimposed to supply
COMIN 1.0µF, HP_Vol=0dB
－ Vrms RL=10kΩ, f=1kHz
0.707 －
－ Vrms RL=3kΩ, f=1kHz
www.rohm.com
© 2010 ROHM Co., Ltd. All rights reserved.
3/13
2010.09 - Rev.A