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BD3822FS PDF 데이터시트 : 부품 기능 및 핀배열

부품번호 BD3822FS
기능 NTSC-PAL Audio I/O
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BD3822FS 데이터시트, 핀배열, 회로
TECHNICAL NOTE
Video/Audio Interfaces for TV and DVD Recorders
NTSC-PAL Audio I/O
Interface for Recording/Playing
BD3822FS, BD3824FS
ƔDescription
BD3822FS and BD3824FS are the audio selectors with internal input selector, gain amp, ALC and power save ON/OFF functions.
BD3822FS contains the 1/2 power compression amp for level meter and 2ch volume. BD3824FS contains the line amp.
BD3822FS and BD3824FS unify the board pattern by pin compatible, and can be used individually as a high-end and low-end
model.
ƔFeatures
1) Low distortion (0.0015%) and low noise (3.2μVrms) by using a resistance ladder type circuit for volume. Shock sound in
switching is also reduced (BD3822FS)
2) Low distortion (0.0015%) and low noises (2.3μVrms)(BD3824FS)
3) Contains an ALC circuit, and can also be used as an RF output
4) Best suited to energy-saving design by low current consumption by using the Bi-CMOS process; compact regulator in the
set, being advantageous to heating in terms of quality
5) SSOP-A32 is used for package. The PCB layout can be easy and the area of PCB is reduced by putting sound input
terminals together, and output terminals, too.
6) BD3822FS and BD3824FS can be used with the same PCB board.
7) I2C BUS data format of BD3822FS is upward compatible with BD3824FS, and can be used without changing the software.
8) A system is employed, in which the waveform connected to the input (tuner, Front, Ext) is not distorted even in standby
mode.
ƔApplications
DVD recorder
ƔProduct lineup
Function
BD3822FS
Volume function
Available
1/2 power compression amp
Available
Line amp
-
Circuit current (mA)
7
Output noise (μVrms)
3.2
BD3822FS is an upstream compatible IC with BD3824FS.
BD3824FS
-
-
Available
6.4
2.3
Ver.B Oct.2005




BD3822FS pdf, 반도체, 판매, 대치품
Ɣ Electric characteristics BD3824FS
(Unless specified: Ta=25ͨ, VCC=9V, f=1kHz, VIN=1Vrms, Rg=600Ԉ, RL=10kԈ,Gain Amp=0dB,Volume=0dB,
Input terminal=Front1,Output Terminal=OUT1)
Parameter
Limits
Symbol
Min. Typ. Max.
Unit
Conditions
Circuit current upon no signal
Standby current
Voltage gain
Maximum output voltage 1
Maximum output voltage 2
Maximum output voltage 3
Channel balance
IQ
IOFF
GV
VOM1
VOM2
VOM3
CB
- 6.4 19.2 mA VIN=0Vrms
- 940 1760 μA ͐Power OFF͑ MODE
-7.6 -6.1 -4.6
dB GV=20log(VOUT/VIN), RL2=10kԈ
Output terminal =
OUT1/OUT2, RL2=10kԈ
1.68 2.1 - Vrms VOM at THD(VOUT)=1%
Gain Amp=5dB,
BW=400-30kHz
Output terminal=RF OUT
2.0 2.5 - Vrms VOM at THD(VOUT)=1%
ALC=OFF, RL2=10kԈ
BW=400-30kHz
Output terminal=
LINE OUT1/LINE OUT2
2.2 2.5 - Vrms VOM at THD(VOUT)=1%
RL1=4.7kԈ
External LPF Gvc=6dB
BW=400-30kHz
-1.5 0 1.5 dB CB = GV1-GV2
GV1:ch1Gain GV2:ch2 Gain
Total harmonic distortion
Output noise voltage *
Cross-talk between channels *
Input impedance
THD
VNO
CTC
RIN
- 0.0015 0.05
% VIN=2Vrms,BW=400-30KHz
- 2.3 11.5 μVrms Rg = 0Ԉ, BW=IHF-A
- -100 -80 dB Rg = 0Ԉ,BW = IHF-A
77 110 143 kԈ *2)
Maximum input voltage
VIM at THD(VOUT)=1%
VIM 2.1 2.5 - Vrms
BW=400-30KHz*2)
Cross-talk between selector *
CTS
- -105 -80 dB Rg = 0Ԉ,BW = IHF-A
CTS=20log(VOUT/VIN)
Tuner gain
Output offset voltage
Minimum gain
Maximum gain
Tuner gain=12dB
GTU 10 12 14 dB VIN=0.25Vrms,
G=20log(VOUT/VIN)
VDC -20
0
20
mV
Tuner1ΦFront1,
Tuner Gain = 8dB
GMIN
-1.5
0
1.5
dB
Gain Amp=0dB
G=20log(VOUT/VIN)
GMAX
3.5
5
6.5
dB Gain Amp=5dB,VIN=500mVrms
G=20log(VOUT/VIN)
Mute attenuation
GMUTE
-
-110 -85
dB
Mute ON, BW = IHF-A
GMUTE=20log(VOUT/VIN)
ALC I/O level 1
ALC1
-
-3
0 dBV Suppression level is set to -3dBV.
ALC I/O level 2
ALC2
-
-5 -2 dBV Suppression level is set to -5dBV.
ALC I/O level 3
ALC3
-
-7 -4 dBV Suppression level is set to -7dBV.
1. *2) Refers to 2,3,9,10,11,12,13,14,31,32pin terminals.
2. VP-9690A (Average value detection, effective value display) IHF-A filter by Matsushita Communication is used fo measurement.
3. Phase between input/output is the same.
4. This IC is not designed to be radiation-resistant.
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BD3822FS 전자부품, 판매, 대치품
5
1
0.1
0.01
85C
25C
-40C
0.001
0.0001
1m
10m 100m
13
OUTPUT VOLTAGE : VOUT [Vrms]
Fig.6 Total harmonic distortion vs
Output voltage (BD3824FS)
+10
+8
+6
+4
+2
0
-2
-4
-6
-8
-10
10
100 1k
10k
FREQUENCY : f [Hz]
100k
Fig.7 Voltage gain vs Frequency
(BD3822FS)
0
-4
-8
-12
-16
-20
10
100 1k
10k
FREQUENCY : f [Hz]
100k
Fig.8 Voltage gain vs Frequency
(BD3824FS)
-
5
1
100m
10m
1m
-3dBV
-5dBV
-7dBV
5
4
3
2
1
3
2
1
100u
1m
10m 100m
1
INPUT VOLTAGE : VIN [Vrms]
5
Fig.9 ALC I/O characteristic 㩷 㩷 㩷
(BD3822FS)
0
0 500m 1 1.5 2 2.5
INPUT VOLTAGE : VIN [Vrms]
Fig.10 Square-Low Compression amp
I/O characteristic (BD3824FS)
0
100
1000
10000
LOAD RESISTANCE : RL [Hz]
100000
Fig.11 Output load characteristic
(BD3822FS, BD3824FS)
ƔOperation Notes
1. Numbers and data in entries are representative design values and are not guaranteed values of the items.
2. Although ROHM is confident that the example application circuit reflects the best possible recommendations, be sure to verify
circuit characteristics for your particular application. Modification of constants for other externally connected circuits may cause
variations in both static and transient characteristics for external components as well as this Rohm IC. Allow for sufficient
margins when determining circuit constants.
3. Absolute maximum ratings
Use of the IC in excess of absolute maximum ratings, such as the applied voltage or operating temperature range (Topr), may
result in IC damage. Assumptions should not be made regarding the state of the IC (short mode or open mode) when such
damage is suffered. A physical safety measure, such as a fuse, should be implemented when using the IC at times where the
absolute maximum ratings may be exceeded.
4. GND potential
Ensure a minimum GND pin potential in all operating conditions. Make sure that no pins are at a voltage below the GND at any
time, regardless of whether it is a transient signal or not.
5. Thermal design
Perform thermal design, in which there are adequate margins, by taking into account the permissible dissipation (Pd) in actual
states of use.
6. Short circuit between terminals and erroneous mounting
Pay attention to the assembly direction of the ICs. Wrong mounting direction or shorts between terminals, GND, or other components
on the circuits, can damage the IC.
7. Operation in strong electromagnetic field
Using the ICs in a strong electromagnetic field can cause operation malfunction.
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부품번호상세설명 및 기능제조사
BD3822FS

NTSC-PAL Audio I/O

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