Technical Note
3/15
www.rohm.com
2010.10 - Rev.
© 2010 ROHM Co., Ltd. All rights reserved.
BD3403FV,BD3861FS,BD3883FS
BD3861FS
VCC=9V, f=1KHz, VIN=1Vrms, Rg=600Ω, RL=10kΩ, Ta=25℃, Input Gain=0dB, VOL=0dB,
Bass, Middle, Treble=0dB, unless otherwise noted.
Parameter Symbol
Limits
Unit Condition
Min. Typ. Max.
TOTAL
Circuit Current IQ - 13.0 26.0 mA At no signal
Output Voltage Gain GV -1.5 0.0 1.5 dB GV=20log(VOUT/VIN)
Total Harmonic Distortion THD - 0.02 0.08 % 400 to 30kHz BPF
Maximum Output Voltage VOM 2.0 2.5 - Vrms THD=1%
Output Noise Voltage VNO - 8.0 15.0 µVrms Rg=0kΩ, IHF-A
Cross-talk between Channels CT - -80 -70 dB Rg=0kΩ, IHF-A
INPUT
6dB SW Gain GV6 5 6 7 dB
VIN=200mVrms
GV6=20log(VOUT/VIN)
Input Voltage Gain 1 GvmaxI1 -1 *1
+1 dB
VIN=200mVrms
From 0 to 10dB
GvmaxI1=20log(VOUT/VIN)
Input Voltage Gain 2 GvmaxI2 -1.5 *1
+1.5 dB
VIN=200mVrms, From 12 to 26dB
GvmaxI2=20log(VOUT/VIN)
Input Gain Switching Step GvmaxIst - 2 - dB From 0 to 26dB
Input Total Harmonic Distortion THDI - 0.02 0.08 % 400 to 30kHz BPF
Input Maximum Output Voltage VOMI 2.0 2.5 - dB THD=1%
Cross-talk between Selectors CS - -80.0 -70.0 dB
Rg=0kΩ, IHF-A
CS=20log(VOUT/VIN)
Input Impedance RI 35.0 50.0 65.0 kΩ RI=51k×VOUT/ (VIN-VOUT)
E Input SW Attenuation GRE - -20.0 -15.0 dB GRE=20log(VOUT/VIN)
INPUT
VOLUME
Input Volume 1 GIV1 -2 *1 +2 dB
From 0 to -50dB
GIV1=20log(VOUT/VIN)
Input Volume 2 GIV2 -3 *1 +3 dB
From -54 to
70dB
GIV2=20log(VOUT/VIN)
Volume Switching Step 1 GIVst1 - 2 - dB From 0 to -50dB
Volume Switching Step 2 GIVst2 - 4 - dB From -54 to –70dB
Maximum attenuation GminI - - -90.0 dB IHF-A, GminI=20log(VOUT/VIN)
OUTPUT
VOLUME
Output Volume GOV -1 *1 +1 dB
From 0 to
59dB
Gov=20log(VOUT/VIN)
Output Switching Step GOVst - 1 - dB From 0 to –59dB
Maximum attenuation GminO - - -90.0 dB
IHF-A
GminO=20log(VOUT/VIN)
BASS
Bass Boost Gain GBB -2 *1 +2 dB
VIN=200mVrms, f=90Hz,
From 0 to 14dB
GBB=20log(VOUT/VIN)
Bass Cut Gain GBC -2 *1 +2 dB
VIN=200mVrms, f =90Hz,
From -14 to 0dB
GBC=20log(VOUT/VIN)
Bass Switching Step GBST - 2 - dB VIN=200mVrms, f=90Hz
MIDDLE
Middle Boost Gain GMB -2 *1 +2 dB
VIN=200mVrms, From 0 to 12dB
GMB=20log(VOUT/VIN)
Middle Cut Gain GMC -2 *1 +2 dB
VIN=200mVrms, From -12 to 0dB
GMC=20log(VOUT/VIN)
Middle Switching Step GMST - 2 - dB VIN=200mVrms
TREBLE
Treble Boost Gain GTB -2 *1 +2 dB
VIN=200mVrms,
f=10kHz From 0 to 12dB
GTB=20log(VOUT/VIN)
Treble Cut Gain GTC -2 *1 +2 dB
VIN=200mVrms,
f=10kHz From -12 to 0dB
GTC=20log(VOUT/VIN)
Treble Switching Step GTST - 2 - dB VIN=200mVrms, f=10kHz
MIC
Microphone Voltage Gain GMIC 4.5 6.0 7.5 dB
VIN=200mVrms
GMIC=20log(VOUT/VIN)
*1 Typ. is set to the value descrived in condition.
Min. and Max. mean the error.